Merge branch 'upstream-curl' into update-curl

* upstream-curl:
  curl 2019-05-22 (885ce314)

19 files changed, 809 insertions, 1334 deletions

diff --git a/Utilities/cmcurl/lib/vtls/axtls.c b/Utilities/cmcurl/lib/vtls/axtls.c
deleted file mode 100644
index b262392..0000000
--- a/Utilities/cmcurl/lib/vtls/axtls.c
+++ /dev/null
@@ -1,741 +0,0 @@
-/***************************************************************************
- *                                  _   _ ____  _
- *  Project                     ___| | | |  _ \| |
- *                             / __| | | | |_) | |
- *                            | (__| |_| |  _ <| |___
- *                             \___|\___/|_| \_\_____|
- *
- * Copyright (C) 2010, DirecTV, Contact: Eric Hu, <ehu@directv.com>.
- * Copyright (C) 2010 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
- *
- * This software is licensed as described in the file COPYING, which
- * you should have received as part of this distribution. The terms
- * are also available at https://curl.haxx.se/docs/copyright.html.
- *
- * You may opt to use, copy, modify, merge, publish, distribute and/or sell
- * copies of the Software, and permit persons to whom the Software is
- * furnished to do so, under the terms of the COPYING file.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ***************************************************************************/
-
-/*
- * Source file for all axTLS-specific code for the TLS/SSL layer. No code
- * but vtls.c should ever call or use these functions.
- */
-
-#include "curl_setup.h"
-
-#ifdef USE_AXTLS
-
-#error axTLS support has been disabled in curl due to doubts about quality,
-#error user dedication and a lack of use/testing. We urge users to consider
-#error using a more established TLS backend instead.
-
-#include <axTLS/config.h>
-#include <axTLS/ssl.h>
-#include "axtls.h"
-
-#include "sendf.h"
-#include "inet_pton.h"
-#include "vtls.h"
-#include "parsedate.h"
-#include "connect.h" /* for the connect timeout */
-#include "select.h"
-#include "curl_printf.h"
-#include "hostcheck.h"
-#include <unistd.h>
-
-/* The last #include files should be: */
-#include "curl_memory.h"
-#include "memdebug.h"
-
-struct ssl_backend_data {
-  SSL_CTX* ssl_ctx;
-  SSL*     ssl;
-};
-
-#define BACKEND connssl->backend
-
-static CURLcode map_error_to_curl(int axtls_err)
-{
-  switch(axtls_err) {
-  case SSL_ERROR_NOT_SUPPORTED:
-  case SSL_ERROR_INVALID_VERSION:
-  case -70:                       /* protocol version alert from server */
-    return CURLE_UNSUPPORTED_PROTOCOL;
-    break;
-  case SSL_ERROR_NO_CIPHER:
-    return CURLE_SSL_CIPHER;
-    break;
-  case SSL_ERROR_BAD_CERTIFICATE: /* this may be bad server cert too */
-  case SSL_ERROR_NO_CERT_DEFINED:
-  case -42:                       /* bad certificate alert from server */
-  case -43:                       /* unsupported cert alert from server */
-  case -44:                       /* cert revoked alert from server */
-  case -45:                       /* cert expired alert from server */
-  case -46:                       /* cert unknown alert from server */
-    return CURLE_SSL_CERTPROBLEM;
-    break;
-  case SSL_X509_ERROR(X509_NOT_OK):
-  case SSL_X509_ERROR(X509_VFY_ERROR_NO_TRUSTED_CERT):
-  case SSL_X509_ERROR(X509_VFY_ERROR_BAD_SIGNATURE):
-  case SSL_X509_ERROR(X509_VFY_ERROR_NOT_YET_VALID):
-  case SSL_X509_ERROR(X509_VFY_ERROR_EXPIRED):
-  case SSL_X509_ERROR(X509_VFY_ERROR_SELF_SIGNED):
-  case SSL_X509_ERROR(X509_VFY_ERROR_INVALID_CHAIN):
-  case SSL_X509_ERROR(X509_VFY_ERROR_UNSUPPORTED_DIGEST):
-  case SSL_X509_ERROR(X509_INVALID_PRIV_KEY):
-    return CURLE_PEER_FAILED_VERIFICATION;
-    break;
-  case -48:                       /* unknown ca alert from server */
-    return CURLE_SSL_CACERT;
-    break;
-  case -49:                       /* access denied alert from server */
-    return CURLE_REMOTE_ACCESS_DENIED;
-    break;
-  case SSL_ERROR_CONN_LOST:
-  case SSL_ERROR_SOCK_SETUP_FAILURE:
-  case SSL_ERROR_INVALID_HANDSHAKE:
-  case SSL_ERROR_INVALID_PROT_MSG:
-  case SSL_ERROR_INVALID_HMAC:
-  case SSL_ERROR_INVALID_SESSION:
-  case SSL_ERROR_INVALID_KEY:     /* it's too bad this doesn't map better */
-  case SSL_ERROR_FINISHED_INVALID:
-  case SSL_ERROR_NO_CLIENT_RENOG:
-  default:
-    return CURLE_SSL_CONNECT_ERROR;
-    break;
-  }
-}
-
-static Curl_recv axtls_recv;
-static Curl_send axtls_send;
-
-static void free_ssl_structs(struct ssl_connect_data *connssl)
-{
-  if(BACKEND->ssl) {
-    ssl_free(BACKEND->ssl);
-    BACKEND->ssl = NULL;
-  }
-  if(BACKEND->ssl_ctx) {
-    ssl_ctx_free(BACKEND->ssl_ctx);
-    BACKEND->ssl_ctx = NULL;
-  }
-}
-
-/*
- * For both blocking and non-blocking connects, this function sets up the
- * ssl context and state.  This function is called after the TCP connect
- * has completed.
- */
-static CURLcode connect_prep(struct connectdata *conn, int sockindex)
-{
-  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
-  struct Curl_easy *data = conn->data;
-  SSL_CTX *ssl_ctx;
-  SSL *ssl = NULL;
-  int cert_types[] = {SSL_OBJ_X509_CERT, SSL_OBJ_PKCS12, 0};
-  int key_types[] = {SSL_OBJ_RSA_KEY, SSL_OBJ_PKCS8, SSL_OBJ_PKCS12, 0};
-  int i, ssl_fcn_return;
-
-  /* Assuming users will not compile in custom key/cert to axTLS.
-  *  Also, even for blocking connects, use axTLS non-blocking feature.
-  */
-  uint32_t client_option = SSL_NO_DEFAULT_KEY |
-    SSL_SERVER_VERIFY_LATER |
-    SSL_CONNECT_IN_PARTS;
-
-  if(connssl->state == ssl_connection_complete)
-    /* to make us tolerant against being called more than once for the
-       same connection */
-    return CURLE_OK;
-
-  if(SSL_CONN_CONFIG(version_max) != CURL_SSLVERSION_MAX_NONE) {
-    failf(data, "axtls does not support CURL_SSLVERSION_MAX");
-    return CURLE_SSL_CONNECT_ERROR;
-  }
-
-
-  /* axTLS only supports TLSv1 */
-  /* check to see if we've been told to use an explicit SSL/TLS version */
-  switch(SSL_CONN_CONFIG(version)) {
-  case CURL_SSLVERSION_DEFAULT:
-  case CURL_SSLVERSION_TLSv1:
-    break;
-  default:
-    failf(data, "axTLS only supports TLS 1.0 and 1.1, "
-          "and it cannot be specified which one to use");
-    return CURLE_SSL_CONNECT_ERROR;
-  }
-
-#ifdef  AXTLSDEBUG
-  client_option |= SSL_DISPLAY_STATES | SSL_DISPLAY_RSA | SSL_DISPLAY_CERTS;
-#endif /* AXTLSDEBUG */
-
-  /* Allocate an SSL_CTX struct */
-  ssl_ctx = ssl_ctx_new(client_option, SSL_DEFAULT_CLNT_SESS);
-  if(ssl_ctx == NULL) {
-    failf(data, "unable to create client SSL context");
-    return CURLE_SSL_CONNECT_ERROR;
-  }
-
-  BACKEND->ssl_ctx = ssl_ctx;
-  BACKEND->ssl = NULL;
-
-  /* Load the trusted CA cert bundle file */
-  if(SSL_CONN_CONFIG(CAfile)) {
-    if(ssl_obj_load(ssl_ctx, SSL_OBJ_X509_CACERT,
-                    SSL_CONN_CONFIG(CAfile), NULL) != SSL_OK) {
-      infof(data, "error reading ca cert file %s \n",
-            SSL_CONN_CONFIG(CAfile));
-      if(SSL_CONN_CONFIG(verifypeer)) {
-        return CURLE_SSL_CACERT_BADFILE;
-      }
-    }
-    else
-      infof(data, "found certificates in %s\n", SSL_CONN_CONFIG(CAfile));
-  }
-
-  /* gtls.c tasks we're skipping for now:
-   * 1) certificate revocation list checking
-   * 2) dns name assignment to host
-   * 3) set protocol priority.  axTLS is TLSv1 only, so can probably ignore
-   * 4) set certificate priority.  axTLS ignores type and sends certs in
-   *  order added.  can probably ignore this.
-   */
-
-  /* Load client certificate */
-  if(SSL_SET_OPTION(cert)) {
-    i = 0;
-    /* Instead of trying to analyze cert type here, let axTLS try them all. */
-    while(cert_types[i] != 0) {
-      ssl_fcn_return = ssl_obj_load(ssl_ctx, cert_types[i],
-                                    SSL_SET_OPTION(cert), NULL);
-      if(ssl_fcn_return == SSL_OK) {
-        infof(data, "successfully read cert file %s \n",
-              SSL_SET_OPTION(cert));
-        break;
-      }
-      i++;
-    }
-    /* Tried all cert types, none worked. */
-    if(cert_types[i] == 0) {
-      failf(data, "%s is not x509 or pkcs12 format",
-            SSL_SET_OPTION(cert));
-      return CURLE_SSL_CERTPROBLEM;
-    }
-  }
-
-  /* Load client key.
-     If a pkcs12 file successfully loaded a cert, then there's nothing to do
-     because the key has already been loaded. */
-  if(SSL_SET_OPTION(key) && cert_types[i] != SSL_OBJ_PKCS12) {
-    i = 0;
-    /* Instead of trying to analyze key type here, let axTLS try them all. */
-    while(key_types[i] != 0) {
-      ssl_fcn_return = ssl_obj_load(ssl_ctx, key_types[i],
-                                    SSL_SET_OPTION(key), NULL);
-      if(ssl_fcn_return == SSL_OK) {
-        infof(data, "successfully read key file %s \n",
-              SSL_SET_OPTION(key));
-        break;
-      }
-      i++;
-    }
-    /* Tried all key types, none worked. */
-    if(key_types[i] == 0) {
-      failf(data, "Failure: %s is not a supported key file",
-            SSL_SET_OPTION(key));
-      return CURLE_SSL_CONNECT_ERROR;
-    }
-  }
-
-  /* gtls.c does more here that is being left out for now
-   * 1) set session credentials.  can probably ignore since axtls puts this
-   *    info in the ssl_ctx struct
-   * 2) setting up callbacks.  these seem gnutls specific
-   */
-
-  if(SSL_SET_OPTION(primary.sessionid)) {
-    const uint8_t *ssl_sessionid;
-    size_t ssl_idsize;
-
-    /* In axTLS, handshaking happens inside ssl_client_new. */
-    Curl_ssl_sessionid_lock(conn);
-    if(!Curl_ssl_getsessionid(conn, (void **) &ssl_sessionid, &ssl_idsize,
-                              sockindex)) {
-      /* we got a session id, use it! */
-      infof(data, "SSL re-using session ID\n");
-      ssl = ssl_client_new(ssl_ctx, conn->sock[sockindex],
-                           ssl_sessionid, (uint8_t)ssl_idsize, NULL);
-    }
-    Curl_ssl_sessionid_unlock(conn);
-  }
-
-  if(!ssl)
-    ssl = ssl_client_new(ssl_ctx, conn->sock[sockindex], NULL, 0, NULL);
-
-  BACKEND->ssl = ssl;
-  return CURLE_OK;
-}
-
-static void Curl_axtls_close(struct connectdata *conn, int sockindex)
-{
-  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
-
-  infof(conn->data, "  Curl_axtls_close\n");
-
-    /* line from openssl.c: (void)SSL_shutdown(BACKEND->ssl);
-       axTLS compat layer does nothing for SSL_shutdown */
-
-    /* The following line is from openssl.c.  There seems to be no axTLS
-       equivalent.  ssl_free and ssl_ctx_free close things.
-       SSL_set_connect_state(connssl->handle); */
-
-  free_ssl_structs(connssl);
-}
-
-/*
- * For both blocking and non-blocking connects, this function finalizes the
- * SSL connection.
- */
-static CURLcode connect_finish(struct connectdata *conn, int sockindex)
-{
-  struct Curl_easy *data = conn->data;
-  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
-  SSL *ssl = BACKEND->ssl;
-  const char *peer_CN;
-  uint32_t dns_altname_index;
-  const char *dns_altname;
-  int8_t found_subject_alt_names = 0;
-  int8_t found_subject_alt_name_matching_conn = 0;
-  const char * const hostname = SSL_IS_PROXY() ? conn->http_proxy.host.name :
-    conn->host.name;
-  const char * const dispname = SSL_IS_PROXY() ?
-    conn->http_proxy.host.dispname : conn->host.dispname;
-
-  /* Here, gtls.c gets the peer certificates and fails out depending on
-   * settings in "data."  axTLS api doesn't have get cert chain fcn, so omit?
-   */
-
-  /* Verify server's certificate */
-  if(SSL_CONN_CONFIG(verifypeer)) {
-    if(ssl_verify_cert(ssl) != SSL_OK) {
-      Curl_axtls_close(conn, sockindex);
-      failf(data, "server cert verify failed");
-      return CURLE_PEER_FAILED_VERIFICATION;
-    }
-  }
-  else
-    infof(data, "\t server certificate verification SKIPPED\n");
-
-  /* Here, gtls.c does issuer verification. axTLS has no straightforward
-   * equivalent, so omitting for now.*/
-
-  /* Here, gtls.c does the following
-   * 1) x509 hostname checking per RFC2818.  axTLS doesn't support this, but
-   *    it seems useful. This is now implemented, by Oscar Koeroo
-   * 2) checks cert validity based on time.  axTLS does this in ssl_verify_cert
-   * 3) displays a bunch of cert information.  axTLS doesn't support most of
-   *    this, but a couple fields are available.
-   */
-
-  /* There is no (DNS) Altnames count in the version 1.4.8 API. There is a
-     risk of an inifite loop */
-  for(dns_altname_index = 0; ; dns_altname_index++) {
-    dns_altname = ssl_get_cert_subject_alt_dnsname(ssl, dns_altname_index);
-    if(dns_altname == NULL) {
-      break;
-    }
-    found_subject_alt_names = 1;
-
-    infof(data, "\tComparing subject alt name DNS with hostname: %s <-> %s\n",
-          dns_altname, hostname);
-    if(Curl_cert_hostcheck(dns_altname, hostname)) {
-      found_subject_alt_name_matching_conn = 1;
-      break;
-    }
-  }
-
-  /* RFC2818 checks */
-  if(found_subject_alt_names && !found_subject_alt_name_matching_conn) {
-    if(SSL_CONN_CONFIG(verifyhost)) {
-      /* Break connection ! */
-      Curl_axtls_close(conn, sockindex);
-      failf(data, "\tsubjectAltName(s) do not match %s\n", dispname);
-      return CURLE_PEER_FAILED_VERIFICATION;
-    }
-    else
-      infof(data, "\tsubjectAltName(s) do not match %s\n", dispname);
-  }
-  else if(found_subject_alt_names == 0) {
-    /* Per RFC2818, when no Subject Alt Names were available, examine the peer
-       CN as a legacy fallback */
-    peer_CN = ssl_get_cert_dn(ssl, SSL_X509_CERT_COMMON_NAME);
-    if(peer_CN == NULL) {
-      if(SSL_CONN_CONFIG(verifyhost)) {
-        Curl_axtls_close(conn, sockindex);
-        failf(data, "unable to obtain common name from peer certificate");
-        return CURLE_PEER_FAILED_VERIFICATION;
-      }
-      else
-        infof(data, "unable to obtain common name from peer certificate");
-    }
-    else {
-      if(!Curl_cert_hostcheck((const char *)peer_CN, hostname)) {
-        if(SSL_CONN_CONFIG(verifyhost)) {
-          /* Break connection ! */
-          Curl_axtls_close(conn, sockindex);
-          failf(data, "\tcommon name \"%s\" does not match \"%s\"\n",
-                peer_CN, dispname);
-          return CURLE_PEER_FAILED_VERIFICATION;
-        }
-        else
-          infof(data, "\tcommon name \"%s\" does not match \"%s\"\n",
-                peer_CN, dispname);
-      }
-    }
-  }
-
-  /* General housekeeping */
-  connssl->state = ssl_connection_complete;
-  conn->recv[sockindex] = axtls_recv;
-  conn->send[sockindex] = axtls_send;
-
-  /* Put our freshly minted SSL session in cache */
-  if(SSL_SET_OPTION(primary.sessionid)) {
-    const uint8_t *ssl_sessionid = ssl_get_session_id(ssl);
-    size_t ssl_idsize = ssl_get_session_id_size(ssl);
-    Curl_ssl_sessionid_lock(conn);
-    if(Curl_ssl_addsessionid(conn, (void *) ssl_sessionid, ssl_idsize,
-                             sockindex) != CURLE_OK)
-      infof(data, "failed to add session to cache\n");
-    Curl_ssl_sessionid_unlock(conn);
-  }
-
-  return CURLE_OK;
-}
-
-/*
- * Use axTLS's non-blocking connection feature to open an SSL connection.
- * This is called after a TCP connection is already established.
- */
-static CURLcode Curl_axtls_connect_nonblocking(struct connectdata *conn,
-                                               int sockindex, bool *done)
-{
-  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
-  CURLcode conn_step;
-  int ssl_fcn_return;
-  int i;
-
- *done = FALSE;
-  /* connectdata is calloc'd and connecting_state is only changed in this
-     function, so this is safe, as the state is effectively initialized. */
-  if(connssl->connecting_state == ssl_connect_1) {
-    conn_step = connect_prep(conn, sockindex);
-    if(conn_step != CURLE_OK) {
-      Curl_axtls_close(conn, sockindex);
-      return conn_step;
-    }
-    connssl->connecting_state = ssl_connect_2;
-  }
-
-  if(connssl->connecting_state == ssl_connect_2) {
-    /* Check to make sure handshake was ok. */
-    if(ssl_handshake_status(BACKEND->ssl) != SSL_OK) {
-      /* Loop to perform more work in between sleeps. This is work around the
-         fact that axtls does not expose any knowledge about when work needs
-         to be performed. This can save ~25% of time on SSL handshakes. */
-      for(i = 0; i<5; i++) {
-        ssl_fcn_return = ssl_read(BACKEND->ssl, NULL);
-        if(ssl_fcn_return < 0) {
-          Curl_axtls_close(conn, sockindex);
-          ssl_display_error(ssl_fcn_return); /* goes to stdout. */
-          return map_error_to_curl(ssl_fcn_return);
-        }
-        return CURLE_OK;
-      }
-    }
-    infof(conn->data, "handshake completed successfully\n");
-    connssl->connecting_state = ssl_connect_3;
-  }
-
-  if(connssl->connecting_state == ssl_connect_3) {
-    conn_step = connect_finish(conn, sockindex);
-    if(conn_step != CURLE_OK) {
-      Curl_axtls_close(conn, sockindex);
-      return conn_step;
-    }
-
-    /* Reset connect state */
-    connssl->connecting_state = ssl_connect_1;
-
-    *done = TRUE;
-    return CURLE_OK;
-  }
-
-  /* Unrecognized state.  Things are very bad. */
-  connssl->state  = ssl_connection_none;
-  connssl->connecting_state = ssl_connect_1;
-  /* Return value perhaps not strictly correct, but distinguishes the issue.*/
-  return CURLE_BAD_FUNCTION_ARGUMENT;
-}
-
-
-/*
- * This function is called after the TCP connect has completed. Setup the TLS
- * layer and do all necessary magic for a blocking connect.
- */
-static CURLcode Curl_axtls_connect(struct connectdata *conn, int sockindex)
-{
-  struct Curl_easy *data = conn->data;
-  CURLcode conn_step = connect_prep(conn, sockindex);
-  int ssl_fcn_return;
-  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
-  SSL *ssl = BACKEND->ssl;
-  long timeout_ms;
-
-  if(conn_step != CURLE_OK) {
-    Curl_axtls_close(conn, sockindex);
-    return conn_step;
-  }
-
-  /* Check to make sure handshake was ok. */
-  while(ssl_handshake_status(ssl) != SSL_OK) {
-    /* check allowed time left */
-    timeout_ms = Curl_timeleft(data, NULL, TRUE);
-
-    if(timeout_ms < 0) {
-      /* no need to continue if time already is up */
-      failf(data, "SSL connection timeout");
-      return CURLE_OPERATION_TIMEDOUT;
-    }
-
-    ssl_fcn_return = ssl_read(ssl, NULL);
-    if(ssl_fcn_return < 0) {
-      Curl_axtls_close(conn, sockindex);
-      ssl_display_error(ssl_fcn_return); /* goes to stdout. */
-      return map_error_to_curl(ssl_fcn_return);
-    }
-    /* TODO: avoid polling */
-    Curl_wait_ms(10);
-  }
-  infof(conn->data, "handshake completed successfully\n");
-
-  conn_step = connect_finish(conn, sockindex);
-  if(conn_step != CURLE_OK) {
-    Curl_axtls_close(conn, sockindex);
-    return conn_step;
-  }
-
-  return CURLE_OK;
-}
-
-/* return number of sent (non-SSL) bytes */
-static ssize_t axtls_send(struct connectdata *conn,
-                          int sockindex,
-                          const void *mem,
-                          size_t len,
-                          CURLcode *err)
-{
-  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
-  /* ssl_write() returns 'int' while write() and send() returns 'size_t' */
-  int rc = ssl_write(BACKEND->ssl, mem, (int)len);
-
-  infof(conn->data, "  axtls_send\n");
-
-  if(rc < 0) {
-    *err = map_error_to_curl(rc);
-    rc = -1; /* generic error code for send failure */
-  }
-
-  *err = CURLE_OK;
-  return rc;
-}
-
-/*
- * This function is called to shut down the SSL layer but keep the
- * socket open (CCC - Clear Command Channel)
- */
-static int Curl_axtls_shutdown(struct connectdata *conn, int sockindex)
-{
-  /* Outline taken from openssl.c since functions are in axTLS compat layer.
-     axTLS's error set is much smaller, so a lot of error-handling was removed.
-   */
-  int retval = 0;
-  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
-  struct Curl_easy *data = conn->data;
-  uint8_t *buf;
-  ssize_t nread;
-
-  infof(conn->data, "  Curl_axtls_shutdown\n");
-
-  /* This has only been tested on the proftpd server, and the mod_tls code
-     sends a close notify alert without waiting for a close notify alert in
-     response. Thus we wait for a close notify alert from the server, but
-     we do not send one. Let's hope other servers do the same... */
-
-  /* axTLS compat layer does nothing for SSL_shutdown, so we do nothing too
-  if(data->set.ftp_ccc == CURLFTPSSL_CCC_ACTIVE)
-      (void)SSL_shutdown(BACKEND->ssl);
-  */
-
-  if(BACKEND->ssl) {
-    int what = SOCKET_READABLE(conn->sock[sockindex], SSL_SHUTDOWN_TIMEOUT);
-    if(what > 0) {
-      /* Something to read, let's do it and hope that it is the close
-         notify alert from the server.  buf is managed internally by
-         axTLS and will be released upon calling ssl_free via
-         free_ssl_structs. */
-      nread = (ssize_t)ssl_read(BACKEND->ssl, &buf);
-
-      if(nread < SSL_OK) {
-        failf(data, "close notify alert not received during shutdown");
-        retval = -1;
-      }
-    }
-    else if(0 == what) {
-      /* timeout */
-      failf(data, "SSL shutdown timeout");
-    }
-    else {
-      /* anything that gets here is fatally bad */
-      failf(data, "select/poll on SSL socket, errno: %d", SOCKERRNO);
-      retval = -1;
-    }
-
-    free_ssl_structs(connssl);
-  }
-  return retval;
-}
-
-static ssize_t axtls_recv(struct connectdata *conn, /* connection data */
-                          int num,                  /* socketindex */
-                          char *buf,                /* store read data here */
-                          size_t buffersize,        /* max amount to read */
-                          CURLcode *err)
-{
-  struct ssl_connect_data *connssl = &conn->ssl[num];
-  ssize_t ret = 0;
-  uint8_t *read_buf;
-
-  infof(conn->data, "  axtls_recv\n");
-
-  *err = CURLE_OK;
-  if(connssl) {
-    ret = ssl_read(BACKEND->ssl, &read_buf);
-    if(ret > SSL_OK) {
-      /* ssl_read returns SSL_OK if there is more data to read, so if it is
-         larger, then all data has been read already.  */
-      memcpy(buf, read_buf,
-             (size_t)ret > buffersize ? buffersize : (size_t)ret);
-    }
-    else if(ret == SSL_OK) {
-      /* more data to be read, signal caller to call again */
-      *err = CURLE_AGAIN;
-      ret = -1;
-    }
-    else if(ret == -3) {
-      /* With patched axTLS, SSL_CLOSE_NOTIFY=-3.  Hard-coding until axTLS
-         team approves proposed fix. */
-      Curl_axtls_close(conn, num);
-    }
-    else {
-      failf(conn->data, "axTLS recv error (%d)", ret);
-      *err = map_error_to_curl((int) ret);
-      ret = -1;
-    }
-  }
-
-  return ret;
-}
-
-/*
- * Return codes:
- *     1 means the connection is still in place
- *     0 means the connection has been closed
- *    -1 means the connection status is unknown
- */
-static int Curl_axtls_check_cxn(struct connectdata *conn)
-{
-  /* openssl.c line:
-     rc = SSL_peek(conn->ssl[FIRSTSOCKET].backend->ssl, (void*)&buf, 1);
-     axTLS compat layer always returns the last argument, so connection is
-     always alive? */
-
-  infof(conn->data, "  Curl_axtls_check_cxn\n");
-   return 1; /* connection still in place */
-}
-
-static void Curl_axtls_session_free(void *ptr)
-{
-  (void)ptr;
-  /* free the ID */
-  /* both openssl.c and gtls.c do something here, but axTLS's OpenSSL
-     compatibility layer does nothing, so we do nothing too. */
-}
-
-static size_t Curl_axtls_version(char *buffer, size_t size)
-{
-  return snprintf(buffer, size, "axTLS/%s", ssl_version());
-}
-
-static CURLcode Curl_axtls_random(struct Curl_easy *data,
-                                  unsigned char *entropy, size_t length)
-{
-  static bool ssl_seeded = FALSE;
-  (void)data;
-  if(!ssl_seeded) {
-    ssl_seeded = TRUE;
-    /* Initialize the seed if not already done. This call is not exactly thread
-     * safe (and neither is the ssl_seeded check), but the worst effect of a
-     * race condition is that some global resources will leak. */
-    RNG_initialize();
-  }
-  get_random((int)length, entropy);
-  return CURLE_OK;
-}
-
-static void *Curl_axtls_get_internals(struct ssl_connect_data *connssl,
-                                      CURLINFO info UNUSED_PARAM)
-{
-  (void)info;
-  return BACKEND->ssl;
-}
-
-const struct Curl_ssl Curl_ssl_axtls = {
-  { CURLSSLBACKEND_AXTLS, "axtls" }, /* info */
-  0, /* no fancy stuff */
-  sizeof(struct ssl_backend_data),
-
-  /*
-   * axTLS has no global init.  Everything is done through SSL and SSL_CTX
-   * structs stored in connectdata structure.
-   */
-  Curl_none_init,                 /* init */
-  /* axTLS has no global cleanup. */
-  Curl_none_cleanup,              /* cleanup */
-  Curl_axtls_version,             /* version */
-  Curl_axtls_check_cxn,           /* check_cxn */
-  Curl_axtls_shutdown,            /* shutdown */
-  Curl_none_data_pending,         /* data_pending */
-  Curl_axtls_random,              /* random */
-  Curl_none_cert_status_request,  /* cert_status_request */
-  Curl_axtls_connect,             /* connect */
-  Curl_axtls_connect_nonblocking, /* connect_nonblocking */
-  Curl_axtls_get_internals,       /* get_internals */
-  Curl_axtls_close,               /* close_one */
-  Curl_none_close_all,            /* close_all */
-  Curl_axtls_session_free,        /* session_free */
-  Curl_none_set_engine,           /* set_engine */
-  Curl_none_set_engine_default,   /* set_engine_default */
-  Curl_none_engines_list,         /* engines_list */
-  Curl_none_false_start,          /* false_start */
-  Curl_none_md5sum,               /* md5sum */
-  NULL                            /* sha256sum */
-};
-
-#endif /* USE_AXTLS */
diff --git a/Utilities/cmcurl/lib/vtls/axtls.h b/Utilities/cmcurl/lib/vtls/axtls.h
deleted file mode 100644
index cb81872..0000000
--- a/Utilities/cmcurl/lib/vtls/axtls.h
+++ /dev/null
@@ -1,33 +0,0 @@
-#ifndef HEADER_CURL_AXTLS_H
-#define HEADER_CURL_AXTLS_H
-/***************************************************************************
- *                                  _   _ ____  _
- *  Project                     ___| | | |  _ \| |
- *                             / __| | | | |_) | |
- *                            | (__| |_| |  _ <| |___
- *                             \___|\___/|_| \_\_____|
- *
- * Copyright (C) 2010, DirecTV, Contact: Eric Hu <ehu@directv.com>
- * Copyright (C) 2010 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
- *
- * This software is licensed as described in the file COPYING, which
- * you should have received as part of this distribution. The terms
- * are also available at https://curl.haxx.se/docs/copyright.html.
- *
- * You may opt to use, copy, modify, merge, publish, distribute and/or sell
- * copies of the Software, and permit persons to whom the Software is
- * furnished to do so, under the terms of the COPYING file.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ***************************************************************************/
-
-#ifdef USE_AXTLS
-#include "curl/curl.h"
-#include "urldata.h"
-
-extern const struct Curl_ssl Curl_ssl_axtls;
-
-#endif /* USE_AXTLS */
-#endif /* HEADER_CURL_AXTLS_H */
diff --git a/Utilities/cmcurl/lib/vtls/cyassl.c b/Utilities/cmcurl/lib/vtls/cyassl.c
index e10398a..44a2bdd 100644
--- a/Utilities/cmcurl/lib/vtls/cyassl.c
+++ b/Utilities/cmcurl/lib/vtls/cyassl.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -67,15 +67,6 @@ and that's a problem since options.h hasn't been included yet. */
 #endif
 #endif
 
-/* HAVE_SUPPORTED_CURVES is wolfSSL's build time symbol for enabling the ECC
-   supported curve extension in options.h. Note ECC is enabled separately. */
-#ifndef HAVE_SUPPORTED_CURVES
-#if defined(HAVE_CYASSL_CTX_USESUPPORTEDCURVE) || \
-    defined(HAVE_WOLFSSL_CTX_USESUPPORTEDCURVE)
-#define HAVE_SUPPORTED_CURVES
-#endif
-#endif
-
 #include <limits.h>
 
 #include "urldata.h"
@@ -88,6 +79,7 @@ and that's a problem since options.h hasn't been included yet. */
 #include "strcase.h"
 #include "x509asn1.h"
 #include "curl_printf.h"
+#include "multiif.h"
 
 #include <cyassl/openssl/ssl.h>
 #include <cyassl/ssl.h>
@@ -151,7 +143,6 @@ static CURLcode
 cyassl_connect_step1(struct connectdata *conn,
                      int sockindex)
 {
-  char error_buffer[CYASSL_MAX_ERROR_SZ];
   char *ciphers;
   struct Curl_easy *data = conn->data;
   struct ssl_connect_data* connssl = &conn->ssl[sockindex];
@@ -364,16 +355,6 @@ cyassl_connect_step1(struct connectdata *conn,
   }
 #endif
 
-#ifdef HAVE_SUPPORTED_CURVES
-  /* CyaSSL/wolfSSL does not send the supported ECC curves ext automatically:
-     https://github.com/wolfSSL/wolfssl/issues/366
-     The supported curves below are those also supported by OpenSSL 1.0.2 and
-     in the same order. */
-  CyaSSL_CTX_UseSupportedCurve(BACKEND->ctx, 0x17); /* secp256r1 */
-  CyaSSL_CTX_UseSupportedCurve(BACKEND->ctx, 0x19); /* secp521r1 */
-  CyaSSL_CTX_UseSupportedCurve(BACKEND->ctx, 0x18); /* secp384r1 */
-#endif
-
   /* give application a chance to interfere with SSL set up. */
   if(data->set.ssl.fsslctx) {
     CURLcode result = CURLE_OK;
@@ -438,6 +419,7 @@ cyassl_connect_step1(struct connectdata *conn,
     if(!Curl_ssl_getsessionid(conn, &ssl_sessionid, NULL, sockindex)) {
       /* we got a session id, use it! */
       if(!SSL_set_session(BACKEND->handle, ssl_sessionid)) {
+        char error_buffer[CYASSL_MAX_ERROR_SZ];
         Curl_ssl_sessionid_unlock(conn);
         failf(data, "SSL: SSL_set_session failed: %s",
               ERR_error_string(SSL_get_error(BACKEND->handle, 0),
@@ -618,6 +600,8 @@ cyassl_connect_step2(struct connectdata *conn,
       else
         infof(data, "ALPN, unrecognized protocol %.*s\n", protocol_len,
               protocol);
+      Curl_multiuse_state(conn, conn->negnpn == CURL_HTTP_VERSION_2 ?
+                          BUNDLE_MULTIPLEX : BUNDLE_NO_MULTIUSE);
     }
     else if(rc == SSL_ALPN_NOT_FOUND)
       infof(data, "ALPN, server did not agree to a protocol\n");
@@ -777,13 +761,13 @@ static void Curl_cyassl_session_free(void *ptr)
 static size_t Curl_cyassl_version(char *buffer, size_t size)
 {
 #if LIBCYASSL_VERSION_HEX >= 0x03006000
-  return snprintf(buffer, size, "wolfSSL/%s", wolfSSL_lib_version());
+  return msnprintf(buffer, size, "wolfSSL/%s", wolfSSL_lib_version());
 #elif defined(WOLFSSL_VERSION)
-  return snprintf(buffer, size, "wolfSSL/%s", WOLFSSL_VERSION);
+  return msnprintf(buffer, size, "wolfSSL/%s", WOLFSSL_VERSION);
 #elif defined(CYASSL_VERSION)
-  return snprintf(buffer, size, "CyaSSL/%s", CYASSL_VERSION);
+  return msnprintf(buffer, size, "CyaSSL/%s", CYASSL_VERSION);
 #else
-  return snprintf(buffer, size, "CyaSSL/%s", "<1.8.8");
+  return msnprintf(buffer, size, "CyaSSL/%s", "<1.8.8");
 #endif
 }
 
@@ -794,6 +778,12 @@ static int Curl_cyassl_init(void)
 }
 
 
+static void Curl_cyassl_cleanup(void)
+{
+  CyaSSL_Cleanup();
+}
+
+
 static bool Curl_cyassl_data_pending(const struct connectdata* conn,
                                      int connindex)
 {
@@ -1004,7 +994,7 @@ const struct Curl_ssl Curl_ssl_cyassl = {
   sizeof(struct ssl_backend_data),
 
   Curl_cyassl_init,                /* init */
-  Curl_none_cleanup,               /* cleanup */
+  Curl_cyassl_cleanup,             /* cleanup */
   Curl_cyassl_version,             /* version */
   Curl_none_check_cxn,             /* check_cxn */
   Curl_cyassl_shutdown,            /* shutdown */
diff --git a/Utilities/cmcurl/lib/vtls/gskit.c b/Utilities/cmcurl/lib/vtls/gskit.c
index 8d1b3d6..b93ff5d 100644
--- a/Utilities/cmcurl/lib/vtls/gskit.c
+++ b/Utilities/cmcurl/lib/vtls/gskit.c
@@ -734,12 +734,11 @@ static ssize_t gskit_recv(struct connectdata *conn, int num, char *buf,
 {
   struct ssl_connect_data *connssl = &conn->ssl[num];
   struct Curl_easy *data = conn->data;
-  int buffsize;
   int nread;
   CURLcode cc = CURLE_RECV_ERROR;
 
   if(pipe_ssloverssl(conn, num, SOS_READ) >= 0) {
-    buffsize = buffersize > (size_t) INT_MAX? INT_MAX: (int) buffersize;
+    int buffsize = buffersize > (size_t) INT_MAX? INT_MAX: (int) buffersize;
     cc = gskit_status(data, gsk_secure_soc_read(BACKEND->handle,
                                                 buf, buffsize, &nread),
                       "gsk_secure_soc_read()", CURLE_RECV_ERROR);
@@ -806,7 +805,6 @@ static CURLcode gskit_connect_step1(struct connectdata *conn, int sockindex)
     conn->host.name;
   const char *sni;
   unsigned int protoflags = 0;
-  long timeout;
   Qso_OverlappedIO_t commarea;
   int sockpair[2];
   static const int sobufsize = CURL_MAX_WRITE_SIZE;
@@ -914,7 +912,7 @@ static CURLcode gskit_connect_step1(struct connectdata *conn, int sockindex)
   if(!result) {
     /* Compute the handshake timeout. Since GSKit granularity is 1 second,
        we round up the required value. */
-    timeout = Curl_timeleft(data, NULL, TRUE);
+    long timeout = Curl_timeleft(data, NULL, TRUE);
     if(timeout < 0)
       result = CURLE_OPERATION_TIMEDOUT;
     else
@@ -1021,14 +1019,13 @@ static CURLcode gskit_connect_step2(struct connectdata *conn, int sockindex,
   struct Curl_easy *data = conn->data;
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   Qso_OverlappedIO_t cstat;
-  long timeout_ms;
   struct timeval stmv;
   CURLcode result;
 
   /* Poll or wait for end of SSL asynchronous handshake. */
 
   for(;;) {
-    timeout_ms = nonblocking? 0: Curl_timeleft(data, NULL, TRUE);
+    long timeout_ms = nonblocking? 0: Curl_timeleft(data, NULL, TRUE);
     if(timeout_ms < 0)
       timeout_ms = 0;
     stmv.tv_sec = timeout_ms / 1000;
@@ -1077,7 +1074,6 @@ static CURLcode gskit_connect_step3(struct connectdata *conn, int sockindex)
   const char *cert = (const char *) NULL;
   const char *certend;
   const char *ptr;
-  int i;
   CURLcode result;
 
   /* SSL handshake done: gather certificate info and verify host. */
@@ -1087,6 +1083,8 @@ static CURLcode gskit_connect_step3(struct connectdata *conn, int sockindex)
                                                     &cdev, &cdec),
                   "gsk_attribute_get_cert_info()", CURLE_SSL_CONNECT_ERROR) ==
      CURLE_OK) {
+    int i;
+
     infof(data, "Server certificate:\n");
     p = cdev;
     for(i = 0; i++ < cdec; p++)
@@ -1160,7 +1158,6 @@ static CURLcode gskit_connect_common(struct connectdata *conn, int sockindex,
   struct Curl_easy *data = conn->data;
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   long timeout_ms;
-  Qso_OverlappedIO_t cstat;
   CURLcode result = CURLE_OK;
 
   *done = connssl->state == ssl_connection_complete;
@@ -1262,7 +1259,6 @@ static int Curl_gskit_shutdown(struct connectdata *conn, int sockindex)
 {
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   struct Curl_easy *data = conn->data;
-  ssize_t nread;
   int what;
   int rc;
   char buf[120];
@@ -1270,8 +1266,10 @@ static int Curl_gskit_shutdown(struct connectdata *conn, int sockindex)
   if(!BACKEND->handle)
     return 0;
 
+#ifndef CURL_DISABLE_FTP
   if(data->set.ftp_ccc != CURLFTPSSL_CCC_ACTIVE)
     return 0;
+#endif
 
   close_one(connssl, conn, sockindex);
   rc = 0;
@@ -1279,6 +1277,8 @@ static int Curl_gskit_shutdown(struct connectdata *conn, int sockindex)
                          SSL_SHUTDOWN_TIMEOUT);
 
   for(;;) {
+    ssize_t nread;
+
     if(what < 0) {
       /* anything that gets here is fatally bad */
       failf(data, "select/poll on SSL socket, errno: %d", SOCKERRNO);
@@ -1314,7 +1314,7 @@ static int Curl_gskit_shutdown(struct connectdata *conn, int sockindex)
 
 static size_t Curl_gskit_version(char *buffer, size_t size)
 {
-  return snprintf(buffer, size, "GSKit");
+  return msnprintf(buffer, size, "GSKit");
 }
 
 
diff --git a/Utilities/cmcurl/lib/vtls/gtls.c b/Utilities/cmcurl/lib/vtls/gtls.c
index 37662a7..8693cdc 100644
--- a/Utilities/cmcurl/lib/vtls/gtls.c
+++ b/Utilities/cmcurl/lib/vtls/gtls.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -55,6 +55,7 @@
 #include "strcase.h"
 #include "warnless.h"
 #include "x509asn1.h"
+#include "multiif.h"
 #include "curl_printf.h"
 #include "curl_memory.h"
 /* The last #include file should be: */
@@ -227,17 +228,17 @@ static void showtime(struct Curl_easy *data,
   if(result)
     return;
 
-  snprintf(str,
-           sizeof(str),
-           "\t %s: %s, %02d %s %4d %02d:%02d:%02d GMT",
-           text,
-           Curl_wkday[tm->tm_wday?tm->tm_wday-1:6],
-           tm->tm_mday,
-           Curl_month[tm->tm_mon],
-           tm->tm_year + 1900,
-           tm->tm_hour,
-           tm->tm_min,
-           tm->tm_sec);
+  msnprintf(str,
+            sizeof(str),
+            "\t %s: %s, %02d %s %4d %02d:%02d:%02d GMT",
+            text,
+            Curl_wkday[tm->tm_wday?tm->tm_wday-1:6],
+            tm->tm_mday,
+            Curl_month[tm->tm_mon],
+            tm->tm_year + 1900,
+            tm->tm_hour,
+            tm->tm_min,
+            tm->tm_sec);
   infof(data, "%s\n", str);
 }
 #endif
@@ -285,11 +286,11 @@ static CURLcode handshake(struct connectdata *conn,
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   gnutls_session_t session = BACKEND->session;
   curl_socket_t sockfd = conn->sock[sockindex];
-  time_t timeout_ms;
-  int rc;
-  int what;
 
   for(;;) {
+    time_t timeout_ms;
+    int rc;
+
     /* check allowed time left */
     timeout_ms = Curl_timeleft(data, NULL, duringconnect);
 
@@ -302,7 +303,7 @@ static CURLcode handshake(struct connectdata *conn,
     /* if ssl is expecting something, check if it's available. */
     if(connssl->connecting_state == ssl_connect_2_reading
        || connssl->connecting_state == ssl_connect_2_writing) {
-
+      int what;
       curl_socket_t writefd = ssl_connect_2_writing ==
         connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
       curl_socket_t readfd = ssl_connect_2_reading ==
@@ -956,7 +957,6 @@ static CURLcode pkp_pin_peer_pubkey(struct Curl_easy *data,
   gnutls_pubkey_t key = NULL;
 
   /* Result is returned to caller */
-  int ret = 0;
   CURLcode result = CURLE_SSL_PINNEDPUBKEYNOTMATCH;
 
   /* if a path wasn't specified, don't pin */
@@ -967,6 +967,8 @@ static CURLcode pkp_pin_peer_pubkey(struct Curl_easy *data,
     return result;
 
   do {
+    int ret;
+
     /* Begin Gyrations to get the public key     */
     gnutls_pubkey_init(&key);
 
@@ -1110,7 +1112,7 @@ gtls_connect_step3(struct connectdata *conn,
               "CRLfile: %s", SSL_CONN_CONFIG(CAfile) ? SSL_CONN_CONFIG(CAfile):
               "none",
               SSL_SET_OPTION(CRLfile)?SSL_SET_OPTION(CRLfile):"none");
-        return CURLE_SSL_CACERT;
+        return CURLE_PEER_FAILED_VERIFICATION;
       }
       else
         infof(data, "\t server certificate verification FAILED\n");
@@ -1278,10 +1280,7 @@ gtls_connect_step3(struct connectdata *conn,
     #define use_addr in_addr
 #endif
     unsigned char addrbuf[sizeof(struct use_addr)];
-    unsigned char certaddr[sizeof(struct use_addr)];
-    size_t addrlen = 0, certaddrlen;
-    int i;
-    int ret = 0;
+    size_t addrlen = 0;
 
     if(Curl_inet_pton(AF_INET, hostname, addrbuf) > 0)
       addrlen = 4;
@@ -1291,10 +1290,13 @@ gtls_connect_step3(struct connectdata *conn,
 #endif
 
     if(addrlen) {
+      unsigned char certaddr[sizeof(struct use_addr)];
+      int i;
+
       for(i = 0; ; i++) {
-        certaddrlen = sizeof(certaddr);
-        ret = gnutls_x509_crt_get_subject_alt_name(x509_cert, i, certaddr,
-                                                   &certaddrlen, NULL);
+        size_t certaddrlen = sizeof(certaddr);
+        int ret = gnutls_x509_crt_get_subject_alt_name(x509_cert, i, certaddr,
+                                                       &certaddrlen, NULL);
         /* If this happens, it wasn't an IP address. */
         if(ret == GNUTLS_E_SHORT_MEMORY_BUFFER)
           continue;
@@ -1423,11 +1425,6 @@ gtls_connect_step3(struct connectdata *conn,
   size = sizeof(certbuf);
   gnutls_x509_crt_get_issuer_dn(x509_cert, certbuf, &size);
   infof(data, "\t issuer: %s\n", certbuf);
-
-  /* compression algorithm (if any) */
-  ptr = gnutls_compression_get_name(gnutls_compression_get(session));
-  /* the *_get_name() says "NULL" if GNUTLS_COMP_NULL is returned */
-  infof(data, "\t compression: %s\n", ptr);
 #endif
 
   gnutls_x509_crt_deinit(x509_cert);
@@ -1454,6 +1451,9 @@ gtls_connect_step3(struct connectdata *conn,
     }
     else
       infof(data, "ALPN, server did not agree to a protocol\n");
+
+    Curl_multiuse_state(conn, conn->negnpn == CURL_HTTP_VERSION_2 ?
+                        BUNDLE_MULTIPLEX : BUNDLE_NO_MULTIUSE);
   }
 #endif
 
@@ -1466,8 +1466,6 @@ gtls_connect_step3(struct connectdata *conn,
        already got it from the cache and asked to use it in the connection, it
        might've been rejected and then a new one is in use now and we need to
        detect that. */
-    bool incache;
-    void *ssl_sessionid;
     void *connect_sessionid;
     size_t connect_idsize = 0;
 
@@ -1476,6 +1474,9 @@ gtls_connect_step3(struct connectdata *conn,
     connect_sessionid = malloc(connect_idsize); /* get a buffer for it */
 
     if(connect_sessionid) {
+      bool incache;
+      void *ssl_sessionid;
+
       /* extract session ID to the allocated buffer */
       gnutls_session_get_data(session, connect_sessionid, &connect_idsize);
 
@@ -1636,12 +1637,10 @@ static void Curl_gtls_close(struct connectdata *conn, int sockindex)
 static int Curl_gtls_shutdown(struct connectdata *conn, int sockindex)
 {
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
-  ssize_t result;
   int retval = 0;
   struct Curl_easy *data = conn->data;
-  bool done = FALSE;
-  char buf[120];
 
+#ifndef CURL_DISABLE_FTP
   /* This has only been tested on the proftpd server, and the mod_tls code
      sends a close notify alert without waiting for a close notify alert in
      response. Thus we wait for a close notify alert from the server, but
@@ -1649,8 +1648,13 @@ static int Curl_gtls_shutdown(struct connectdata *conn, int sockindex)
 
   if(data->set.ftp_ccc == CURLFTPSSL_CCC_ACTIVE)
       gnutls_bye(BACKEND->session, GNUTLS_SHUT_WR);
+#endif
 
   if(BACKEND->session) {
+    ssize_t result;
+    bool done = FALSE;
+    char buf[120];
+
     while(!done) {
       int what = SOCKET_READABLE(conn->sock[sockindex],
                                  SSL_SHUTDOWN_TIMEOUT);
@@ -1748,7 +1752,7 @@ static void Curl_gtls_session_free(void *ptr)
 
 static size_t Curl_gtls_version(char *buffer, size_t size)
 {
-  return snprintf(buffer, size, "GnuTLS/%s", gnutls_check_version(NULL));
+  return msnprintf(buffer, size, "GnuTLS/%s", gnutls_check_version(NULL));
 }
 
 #ifndef USE_GNUTLS_NETTLE
@@ -1763,12 +1767,6 @@ static int Curl_gtls_seed(struct Curl_easy *data)
 
   if(!ssl_seeded || data->set.str[STRING_SSL_RANDOM_FILE] ||
      data->set.str[STRING_SSL_EGDSOCKET]) {
-
-    /* TODO: to a good job seeding the RNG
-       This may involve the gcry_control function and these options:
-       GCRYCTL_SET_RANDOM_SEED_FILE
-       GCRYCTL_SET_RNDEGD_SOCKET
-    */
     ssl_seeded = TRUE;
   }
   return 0;
diff --git a/Utilities/cmcurl/lib/vtls/mbedtls.c b/Utilities/cmcurl/lib/vtls/mbedtls.c
index c5ed887..63d1f4c 100644
--- a/Utilities/cmcurl/lib/vtls/mbedtls.c
+++ b/Utilities/cmcurl/lib/vtls/mbedtls.c
@@ -6,7 +6,7 @@
  *                             \___|\___/|_| \_\_____|
  *
  * Copyright (C) 2010 - 2011, Hoi-Ho Chan, <hoiho.chan@gmail.com>
- * Copyright (C) 2012 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 2012 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -54,6 +54,7 @@
 #include "parsedate.h"
 #include "connect.h" /* for the connect timeout */
 #include "select.h"
+#include "multiif.h"
 #include "polarssl_threadlock.h"
 
 /* The last 3 #include files should be in this order */
@@ -342,7 +343,8 @@ mbed_connect_step1(struct connectdata *conn,
   if(SSL_SET_OPTION(key)) {
     ret = mbedtls_pk_parse_keyfile(&BACKEND->pk, SSL_SET_OPTION(key),
                                    SSL_SET_OPTION(key_passwd));
-    if(ret == 0 && !mbedtls_pk_can_do(&BACKEND->pk, MBEDTLS_PK_RSA))
+    if(ret == 0 && !(mbedtls_pk_can_do(&BACKEND->pk, MBEDTLS_PK_RSA) ||
+                     mbedtls_pk_can_do(&BACKEND->pk, MBEDTLS_PK_ECKEY)))
       ret = MBEDTLS_ERR_PK_TYPE_MISMATCH;
 
     if(ret) {
@@ -373,7 +375,7 @@ mbed_connect_step1(struct connectdata *conn,
     }
   }
 
-  infof(data, "mbedTLS: Connecting to %s:%d\n", hostname, port);
+  infof(data, "mbedTLS: Connecting to %s:%ld\n", hostname, port);
 
   mbedtls_ssl_config_init(&BACKEND->config);
 
@@ -539,13 +541,6 @@ mbed_connect_step2(struct connectdata *conn,
         data->set.str[STRING_SSL_PINNEDPUBLICKEY_PROXY] :
         data->set.str[STRING_SSL_PINNEDPUBLICKEY_ORIG];
 
-#ifdef HAS_ALPN
-  const char *next_protocol;
-#endif
-
-  char errorbuf[128];
-  errorbuf[0] = 0;
-
   conn->recv[sockindex] = mbed_recv;
   conn->send[sockindex] = mbed_send;
 
@@ -560,6 +555,8 @@ mbed_connect_step2(struct connectdata *conn,
     return CURLE_OK;
   }
   else if(ret) {
+    char errorbuf[128];
+    errorbuf[0] = 0;
 #ifdef MBEDTLS_ERROR_C
     mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
 #endif /* MBEDTLS_ERROR_C */
@@ -574,19 +571,21 @@ mbed_connect_step2(struct connectdata *conn,
 
   ret = mbedtls_ssl_get_verify_result(&BACKEND->ssl);
 
+  if(!SSL_CONN_CONFIG(verifyhost))
+    /* Ignore hostname errors if verifyhost is disabled */
+    ret &= ~MBEDTLS_X509_BADCERT_CN_MISMATCH;
+
   if(ret && SSL_CONN_CONFIG(verifypeer)) {
     if(ret & MBEDTLS_X509_BADCERT_EXPIRED)
       failf(data, "Cert verify failed: BADCERT_EXPIRED");
 
-    if(ret & MBEDTLS_X509_BADCERT_REVOKED) {
+    else if(ret & MBEDTLS_X509_BADCERT_REVOKED)
       failf(data, "Cert verify failed: BADCERT_REVOKED");
-      return CURLE_SSL_CACERT;
-    }
 
-    if(ret & MBEDTLS_X509_BADCERT_CN_MISMATCH)
+    else if(ret & MBEDTLS_X509_BADCERT_CN_MISMATCH)
       failf(data, "Cert verify failed: BADCERT_CN_MISMATCH");
 
-    if(ret & MBEDTLS_X509_BADCERT_NOT_TRUSTED)
+    else if(ret & MBEDTLS_X509_BADCERT_NOT_TRUSTED)
       failf(data, "Cert verify failed: BADCERT_NOT_TRUSTED");
 
     return CURLE_PEER_FAILED_VERIFICATION;
@@ -662,7 +661,7 @@ mbed_connect_step2(struct connectdata *conn,
 
 #ifdef HAS_ALPN
   if(conn->bits.tls_enable_alpn) {
-    next_protocol = mbedtls_ssl_get_alpn_protocol(&BACKEND->ssl);
+    const char *next_protocol = mbedtls_ssl_get_alpn_protocol(&BACKEND->ssl);
 
     if(next_protocol) {
       infof(data, "ALPN, server accepted to use %s\n", next_protocol);
@@ -682,6 +681,8 @@ mbed_connect_step2(struct connectdata *conn,
     else {
       infof(data, "ALPN, server did not agree to a protocol\n");
     }
+    Curl_multiuse_state(conn, conn->negnpn == CURL_HTTP_VERSION_2 ?
+                        BUNDLE_MULTIPLEX : BUNDLE_NO_MULTIUSE);
   }
 #endif
 
@@ -714,6 +715,8 @@ mbed_connect_step3(struct connectdata *conn,
 
     ret = mbedtls_ssl_get_session(&BACKEND->ssl, our_ssl_sessionid);
     if(ret) {
+      if(ret != MBEDTLS_ERR_SSL_ALLOC_FAILED)
+        mbedtls_ssl_session_free(our_ssl_sessionid);
       free(our_ssl_sessionid);
       failf(data, "mbedtls_ssl_get_session returned -0x%x", -ret);
       return CURLE_SSL_CONNECT_ERROR;
@@ -727,6 +730,7 @@ mbed_connect_step3(struct connectdata *conn,
     retcode = Curl_ssl_addsessionid(conn, our_ssl_sessionid, 0, sockindex);
     Curl_ssl_sessionid_unlock(conn);
     if(retcode) {
+      mbedtls_ssl_session_free(our_ssl_sessionid);
       free(our_ssl_sessionid);
       failf(data, "failed to store ssl session");
       return retcode;
@@ -811,9 +815,14 @@ static void Curl_mbedtls_session_free(void *ptr)
 
 static size_t Curl_mbedtls_version(char *buffer, size_t size)
 {
+#ifdef MBEDTLS_VERSION_C
+  /* if mbedtls_version_get_number() is available it is better */
   unsigned int version = mbedtls_version_get_number();
-  return snprintf(buffer, size, "mbedTLS/%u.%u.%u", version>>24,
-                  (version>>16)&0xff, (version>>8)&0xff);
+  return msnprintf(buffer, size, "mbedTLS/%u.%u.%u", version>>24,
+                   (version>>16)&0xff, (version>>8)&0xff);
+#else
+  return msnprintf(buffer, size, "mbedTLS/%s", MBEDTLS_VERSION_STRING);
+#endif
 }
 
 static CURLcode Curl_mbedtls_random(struct Curl_easy *data,
diff --git a/Utilities/cmcurl/lib/vtls/mesalink.c b/Utilities/cmcurl/lib/vtls/mesalink.c
index 6a2b67e..718c282 100644
--- a/Utilities/cmcurl/lib/vtls/mesalink.c
+++ b/Utilities/cmcurl/lib/vtls/mesalink.c
@@ -5,8 +5,8 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 2017-2018, Yiming Jing, <jingyiming@baidu.com>
- * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 2017 - 2018, Yiming Jing, <jingyiming@baidu.com>
+ * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -268,7 +268,7 @@ mesalink_connect_step2(struct connectdata *conn, int sockindex)
     char error_buffer[MESALINK_MAX_ERROR_SZ];
     int detail = SSL_get_error(BACKEND->handle, ret);
 
-    if(SSL_ERROR_WANT_CONNECT == detail) {
+    if(SSL_ERROR_WANT_CONNECT == detail || SSL_ERROR_WANT_READ == detail) {
       connssl->connecting_state = ssl_connect_2_reading;
       return CURLE_OK;
     }
@@ -424,7 +424,7 @@ mesalink_recv(struct connectdata *conn, int num, char *buf, size_t buffersize,
 static size_t
 Curl_mesalink_version(char *buffer, size_t size)
 {
-  return snprintf(buffer, size, "MesaLink/%s", MESALINK_VERSION_STRING);
+  return msnprintf(buffer, size, "MesaLink/%s", MESALINK_VERSION_STRING);
 }
 
 static int
diff --git a/Utilities/cmcurl/lib/vtls/nss.c b/Utilities/cmcurl/lib/vtls/nss.c
index a3d3e58..491def1 100644
--- a/Utilities/cmcurl/lib/vtls/nss.c
+++ b/Utilities/cmcurl/lib/vtls/nss.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -38,6 +38,7 @@
 #include "select.h"
 #include "vtls.h"
 #include "llist.h"
+#include "multiif.h"
 #include "curl_printf.h"
 #include "nssg.h"
 #include <nspr.h>
@@ -246,6 +247,32 @@ static void nss_print_error_message(struct Curl_easy *data, PRUint32 err)
   failf(data, "%s", PR_ErrorToString(err, PR_LANGUAGE_I_DEFAULT));
 }
 
+static char *nss_sslver_to_name(PRUint16 nssver)
+{
+  switch(nssver) {
+  case SSL_LIBRARY_VERSION_2:
+    return strdup("SSLv2");
+  case SSL_LIBRARY_VERSION_3_0:
+    return strdup("SSLv3");
+  case SSL_LIBRARY_VERSION_TLS_1_0:
+    return strdup("TLSv1.0");
+#ifdef SSL_LIBRARY_VERSION_TLS_1_1
+  case SSL_LIBRARY_VERSION_TLS_1_1:
+    return strdup("TLSv1.1");
+#endif
+#ifdef SSL_LIBRARY_VERSION_TLS_1_2
+  case SSL_LIBRARY_VERSION_TLS_1_2:
+    return strdup("TLSv1.2");
+#endif
+#ifdef SSL_LIBRARY_VERSION_TLS_1_3
+  case SSL_LIBRARY_VERSION_TLS_1_3:
+    return strdup("TLSv1.3");
+#endif
+  default:
+    return curl_maprintf("0x%04x", nssver);
+  }
+}
+
 static SECStatus set_ciphers(struct Curl_easy *data, PRFileDesc * model,
                              char *cipher_list)
 {
@@ -351,7 +378,7 @@ static int is_file(const char *filename)
     return 0;
 
   if(stat(filename, &st) == 0)
-    if(S_ISREG(st.st_mode))
+    if(S_ISREG(st.st_mode) || S_ISFIFO(st.st_mode) || S_ISCHR(st.st_mode))
       return 1;
 
   return 0;
@@ -817,6 +844,8 @@ static void HandshakeCallback(PRFileDesc *sock, void *arg)
        !memcmp(ALPN_HTTP_1_1, buf, ALPN_HTTP_1_1_LENGTH)) {
       conn->negnpn = CURL_HTTP_VERSION_1_1;
     }
+    Curl_multiuse_state(conn, conn->negnpn == CURL_HTTP_VERSION_2 ?
+                        BUNDLE_MULTIPLEX : BUNDLE_NO_MULTIUSE);
   }
 }
 
@@ -1279,6 +1308,8 @@ static void nss_unload_module(SECMODModule **pmod)
 static CURLcode nss_init_core(struct Curl_easy *data, const char *cert_dir)
 {
   NSSInitParameters initparams;
+  PRErrorCode err;
+  const char *err_name;
 
   if(nss_context != NULL)
     return CURLE_OK;
@@ -1299,7 +1330,9 @@ static CURLcode nss_init_core(struct Curl_easy *data, const char *cert_dir)
     if(nss_context != NULL)
       return CURLE_OK;
 
-    infof(data, "Unable to initialize NSS database\n");
+    err = PR_GetError();
+    err_name = nss_error_to_name(err);
+    infof(data, "Unable to initialize NSS database: %d (%s)\n", err, err_name);
   }
 
   infof(data, "Initializing NSS with certpath: none\n");
@@ -1309,7 +1342,9 @@ static CURLcode nss_init_core(struct Curl_easy *data, const char *cert_dir)
   if(nss_context != NULL)
     return CURLE_OK;
 
-  infof(data, "Unable to initialize NSS\n");
+  err = PR_GetError();
+  err_name = nss_error_to_name(err);
+  failf(data, "Unable to initialize NSS: %d (%s)", err, err_name);
   return CURLE_SSL_CACERT_BADFILE;
 }
 
@@ -1638,17 +1673,6 @@ static CURLcode nss_load_ca_certificates(struct connectdata *conn,
 static CURLcode nss_sslver_from_curl(PRUint16 *nssver, long version)
 {
   switch(version) {
-  case CURL_SSLVERSION_TLSv1:
-    /* TODO: set sslver->max to SSL_LIBRARY_VERSION_TLS_1_3 once stable */
-#ifdef SSL_LIBRARY_VERSION_TLS_1_2
-    *nssver = SSL_LIBRARY_VERSION_TLS_1_2;
-#elif defined SSL_LIBRARY_VERSION_TLS_1_1
-    *nssver = SSL_LIBRARY_VERSION_TLS_1_1;
-#else
-    *nssver = SSL_LIBRARY_VERSION_TLS_1_0;
-#endif
-    return CURLE_OK;
-
   case CURL_SSLVERSION_SSLv2:
     *nssver = SSL_LIBRARY_VERSION_2;
     return CURLE_OK;
@@ -1709,10 +1733,8 @@ static CURLcode nss_init_sslver(SSLVersionRange *sslver,
   }
 
   switch(min) {
-  case CURL_SSLVERSION_DEFAULT:
-    break;
   case CURL_SSLVERSION_TLSv1:
-    sslver->min = SSL_LIBRARY_VERSION_TLS_1_0;
+  case CURL_SSLVERSION_DEFAULT:
     break;
   default:
     result = nss_sslver_from_curl(&sslver->min, min);
@@ -1789,10 +1811,19 @@ static CURLcode nss_setup_connect(struct connectdata *conn, int sockindex)
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   CURLcode result;
   bool second_layer = FALSE;
+  SSLVersionRange sslver_supported;
 
   SSLVersionRange sslver = {
     SSL_LIBRARY_VERSION_TLS_1_0,  /* min */
-    SSL_LIBRARY_VERSION_TLS_1_0   /* max */
+#ifdef SSL_LIBRARY_VERSION_TLS_1_3
+    SSL_LIBRARY_VERSION_TLS_1_3   /* max */
+#elif defined SSL_LIBRARY_VERSION_TLS_1_2
+    SSL_LIBRARY_VERSION_TLS_1_2
+#elif defined SSL_LIBRARY_VERSION_TLS_1_1
+    SSL_LIBRARY_VERSION_TLS_1_1
+#else
+    SSL_LIBRARY_VERSION_TLS_1_0
+#endif
   };
 
   BACKEND->data = data;
@@ -1800,7 +1831,6 @@ static CURLcode nss_setup_connect(struct connectdata *conn, int sockindex)
   /* list of all NSS objects we need to destroy in Curl_nss_close() */
   Curl_llist_init(&BACKEND->obj_list, nss_destroy_object);
 
-  /* FIXME. NSS doesn't support multiple databases open at the same time. */
   PR_Lock(nss_initlock);
   result = nss_init(conn->data);
   if(result) {
@@ -1841,6 +1871,20 @@ static CURLcode nss_setup_connect(struct connectdata *conn, int sockindex)
   /* enable/disable the requested SSL version(s) */
   if(nss_init_sslver(&sslver, data, conn) != CURLE_OK)
     goto error;
+  if(SSL_VersionRangeGetSupported(ssl_variant_stream,
+                                  &sslver_supported) != SECSuccess)
+    goto error;
+  if(sslver_supported.max < sslver.max && sslver_supported.max >= sslver.min) {
+    char *sslver_req_str, *sslver_supp_str;
+    sslver_req_str = nss_sslver_to_name(sslver.max);
+    sslver_supp_str = nss_sslver_to_name(sslver_supported.max);
+    if(sslver_req_str && sslver_supp_str)
+      infof(data, "Falling back from %s to max supported SSL version (%s)\n",
+                  sslver_req_str, sslver_supp_str);
+    free(sslver_req_str);
+    free(sslver_supp_str);
+    sslver.max = sslver_supported.max;
+  }
   if(SSL_VersionRangeSet(model, &sslver) != SECSuccess)
     goto error;
 
@@ -2090,7 +2134,7 @@ static CURLcode nss_do_connect(struct connectdata *conn, int sockindex)
     else if(*certverifyresult == SSL_ERROR_BAD_CERT_DOMAIN)
       result = CURLE_PEER_FAILED_VERIFICATION;
     else if(*certverifyresult != 0)
-      result = CURLE_SSL_CACERT;
+      result = CURLE_PEER_FAILED_VERIFICATION;
     goto error;
   }
 
@@ -2164,7 +2208,7 @@ static CURLcode nss_connect_common(struct connectdata *conn, int sockindex,
     if(!blocking)
       /* CURLE_AGAIN in non-blocking mode is not an error */
       return CURLE_OK;
-    /* fall through */
+    /* FALLTHROUGH */
   default:
     return result;
   }
@@ -2279,7 +2323,7 @@ static ssize_t nss_recv(struct connectdata *conn,  /* connection data */
 
 static size_t Curl_nss_version(char *buffer, size_t size)
 {
-  return snprintf(buffer, size, "NSS/%s", NSS_VERSION);
+  return msnprintf(buffer, size, "NSS/%s", NSS_VERSION);
 }
 
 /* data might be NULL */
diff --git a/Utilities/cmcurl/lib/vtls/openssl.c b/Utilities/cmcurl/lib/vtls/openssl.c
index 4c5e8c1..85e9be6 100644
--- a/Utilities/cmcurl/lib/vtls/openssl.c
+++ b/Utilities/cmcurl/lib/vtls/openssl.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -48,6 +48,7 @@
 #include "vtls.h"
 #include "strcase.h"
 #include "hostcheck.h"
+#include "multiif.h"
 #include "curl_printf.h"
 #include <openssl/ssl.h>
 #include <openssl/rand.h>
@@ -65,11 +66,15 @@
 #include <openssl/buffer.h>
 #include <openssl/pkcs12.h>
 
+#ifdef USE_AMISSL
+#include "amigaos.h"
+#endif
+
 #if (OPENSSL_VERSION_NUMBER >= 0x0090808fL) && !defined(OPENSSL_NO_OCSP)
 #include <openssl/ocsp.h>
 #endif
 
-#if (OPENSSL_VERSION_NUMBER >= 0x0090800fL) && /* 0.9.8 or later */     \
+#if (OPENSSL_VERSION_NUMBER >= 0x0090700fL) && /* 0.9.7 or later */     \
   !defined(OPENSSL_NO_ENGINE)
 #define USE_OPENSSL_ENGINE
 #include <openssl/engine.h>
@@ -82,6 +87,13 @@
 #include "curl_memory.h"
 #include "memdebug.h"
 
+/* Uncomment the ALLOW_RENEG line to a real #define if you want to allow TLS
+   renegotiations when built with BoringSSL. Renegotiating is non-compliant
+   with HTTP/2 and "an extremely dangerous protocol feature". Beware.
+
+#define ALLOW_RENEG 1
+ */
+
 #ifndef OPENSSL_VERSION_NUMBER
 #error "OPENSSL_VERSION_NUMBER not defined"
 #endif
@@ -384,6 +396,31 @@ static char *ossl_strerror(unsigned long error, char *buf, size_t size)
   return buf;
 }
 
+/* Return an extra data index for the connection data.
+ * This index can be used with SSL_get_ex_data() and SSL_set_ex_data().
+ */
+static int ossl_get_ssl_conn_index(void)
+{
+  static int ssl_ex_data_conn_index = -1;
+  if(ssl_ex_data_conn_index < 0) {
+    ssl_ex_data_conn_index = SSL_get_ex_new_index(0, NULL, NULL, NULL, NULL);
+  }
+  return ssl_ex_data_conn_index;
+}
+
+/* Return an extra data index for the sockindex.
+ * This index can be used with SSL_get_ex_data() and SSL_set_ex_data().
+ */
+static int ossl_get_ssl_sockindex_index(void)
+{
+  static int ssl_ex_data_sockindex_index = -1;
+  if(ssl_ex_data_sockindex_index < 0) {
+    ssl_ex_data_sockindex_index = SSL_get_ex_new_index(0, NULL, NULL, NULL,
+        NULL);
+  }
+  return ssl_ex_data_sockindex_index;
+}
+
 static int passwd_callback(char *buf, int num, int encrypting,
                            void *global_passwd)
 {
@@ -788,8 +825,11 @@ int cert_stuff(struct connectdata *conn,
   fail:
       EVP_PKEY_free(pri);
       X509_free(x509);
+#ifdef USE_AMISSL
+      sk_X509_pop_free(ca, Curl_amiga_X509_free);
+#else
       sk_X509_pop_free(ca, X509_free);
-
+#endif
       if(!cert_done)
         return 0; /* failure! */
       break;
@@ -799,15 +839,15 @@ int cert_stuff(struct connectdata *conn,
       return 0;
     }
 
-    file_type = do_file_type(key_type);
+    if(!key_file)
+      key_file = cert_file;
+    else
+      file_type = do_file_type(key_type);
 
     switch(file_type) {
     case SSL_FILETYPE_PEM:
       if(cert_done)
         break;
-      if(!key_file)
-        /* cert & key can only be in PEM case in the same file */
-        key_file = cert_file;
       /* FALLTHROUGH */
     case SSL_FILETYPE_ASN1:
       if(SSL_CTX_use_PrivateKey_file(ctx, key_file, file_type) != 1) {
@@ -1035,6 +1075,10 @@ static int Curl_ossl_init(void)
   }
 #endif
 
+  /* Initialize the extra data indexes */
+  if(ossl_get_ssl_conn_index() < 0 || ossl_get_ssl_sockindex_index() < 0)
+    return 0;
+
   return 1;
 }
 
@@ -1049,7 +1093,7 @@ static void Curl_ossl_cleanup(void)
   /* Free ciphers and digests lists */
   EVP_cleanup();
 
-#ifdef HAVE_ENGINE_CLEANUP
+#ifdef USE_OPENSSL_ENGINE
   /* Free engine list */
   ENGINE_cleanup();
 #endif
@@ -1264,6 +1308,7 @@ static int Curl_ossl_shutdown(struct connectdata *conn, int sockindex)
   int err;
   bool done = FALSE;
 
+#ifndef CURL_DISABLE_FTP
   /* This has only been tested on the proftpd server, and the mod_tls code
      sends a close notify alert without waiting for a close notify alert in
      response. Thus we wait for a close notify alert from the server, but
@@ -1271,6 +1316,7 @@ static int Curl_ossl_shutdown(struct connectdata *conn, int sockindex)
 
   if(data->set.ftp_ccc == CURLFTPSSL_CCC_ACTIVE)
       (void)SSL_shutdown(BACKEND->handle);
+#endif
 
   if(BACKEND->handle) {
     buffsize = (int)sizeof(buf);
@@ -1656,6 +1702,7 @@ static CURLcode verifystatus(struct connectdata *conn,
                              struct ssl_connect_data *connssl)
 {
   int i, ocsp_status;
+  unsigned char *status;
   const unsigned char *p;
   CURLcode result = CURLE_OK;
   struct Curl_easy *data = conn->data;
@@ -1665,14 +1712,14 @@ static CURLcode verifystatus(struct connectdata *conn,
   X509_STORE     *st = NULL;
   STACK_OF(X509) *ch = NULL;
 
-  long len = SSL_get_tlsext_status_ocsp_resp(BACKEND->handle, &p);
+  long len = SSL_get_tlsext_status_ocsp_resp(BACKEND->handle, &status);
 
-  if(!p) {
+  if(!status) {
     failf(data, "No OCSP response received");
     result = CURLE_SSL_INVALIDCERTSTATUS;
     goto end;
   }
-
+  p = status;
   rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
   if(!rsp) {
     failf(data, "Invalid OCSP response");
@@ -1867,15 +1914,8 @@ static const char *ssl_msg_type(int ssl_ver, int msg)
   return "Unknown";
 }
 
-static const char *tls_rt_type(int type, const void *buf, size_t buflen)
+static const char *tls_rt_type(int type)
 {
-  (void)buf;
-  (void)buflen;
-#ifdef SSL3_RT_INNER_CONTENT_TYPE
-  if(type == SSL3_RT_INNER_CONTENT_TYPE && buf && buflen >= 1)
-    type = *(unsigned char *)buf;
-#endif
-
   switch(type) {
 #ifdef SSL3_RT_HEADER
   case SSL3_RT_HEADER:
@@ -1945,12 +1985,20 @@ static void ssl_tls_trace(int direction, int ssl_ver, int content_type,
   case 0:
     break;
   default:
-    snprintf(unknown, sizeof(unknown), "(%x)", ssl_ver);
+    msnprintf(unknown, sizeof(unknown), "(%x)", ssl_ver);
     verstr = unknown;
     break;
   }
 
-  if(ssl_ver) {
+  /* Log progress for interesting records only (like Handshake or Alert), skip
+   * all raw record headers (content_type == SSL3_RT_HEADER or ssl_ver == 0).
+   * For TLS 1.3, skip notification of the decrypted inner Content Type.
+   */
+  if(ssl_ver
+#ifdef SSL3_RT_INNER_CONTENT_TYPE
+     && content_type != SSL3_RT_INNER_CONTENT_TYPE
+#endif
+    ) {
     const char *msg_name, *tls_rt_name;
     char ssl_buf[1024];
     int msg_type, txt_len;
@@ -1964,17 +2012,10 @@ static void ssl_tls_trace(int direction, int ssl_ver, int content_type,
      * is at 'buf[0]'.
      */
     if(ssl_ver == SSL3_VERSION_MAJOR && content_type)
-      tls_rt_name = tls_rt_type(content_type, buf, len);
+      tls_rt_name = tls_rt_type(content_type);
     else
       tls_rt_name = "";
 
-#ifdef SSL3_RT_INNER_CONTENT_TYPE
-    if(content_type == SSL3_RT_INNER_CONTENT_TYPE) {
-      msg_type = 0;
-      msg_name = "[no content]";
-    }
-    else
-#endif
     if(content_type == SSL3_RT_CHANGE_CIPHER_SPEC) {
       msg_type = *(char *)buf;
       msg_name = "Change cipher spec";
@@ -1988,9 +2029,9 @@ static void ssl_tls_trace(int direction, int ssl_ver, int content_type,
       msg_name = ssl_msg_type(ssl_ver, msg_type);
     }
 
-    txt_len = snprintf(ssl_buf, sizeof(ssl_buf), "%s (%s), %s, %s (%d):\n",
-                       verstr, direction?"OUT":"IN",
-                       tls_rt_name, msg_name, msg_type);
+    txt_len = msnprintf(ssl_buf, sizeof(ssl_buf), "%s (%s), %s, %s (%d):\n",
+                        verstr, direction?"OUT":"IN",
+                        tls_rt_name, msg_name, msg_type);
     if(0 <= txt_len && (unsigned)txt_len < sizeof(ssl_buf)) {
       Curl_debug(data, CURLINFO_TEXT, ssl_buf, (size_t)txt_len);
     }
@@ -2137,6 +2178,7 @@ set_ssl_version_min_max(long *ctx_options, struct connectdata *conn,
     }
 #else
       (void)sockindex;
+      (void)ctx_options;
       failf(data, OSSL_PACKAGE " was built without TLS 1.3 support");
       return CURLE_NOT_BUILT_IN;
 #endif
@@ -2189,6 +2231,62 @@ set_ssl_version_min_max(long *ctx_options, struct connectdata *conn,
   return CURLE_OK;
 }
 
+/* The "new session" callback must return zero if the session can be removed
+ * or non-zero if the session has been put into the session cache.
+ */
+static int ossl_new_session_cb(SSL *ssl, SSL_SESSION *ssl_sessionid)
+{
+  int res = 0;
+  struct connectdata *conn;
+  struct Curl_easy *data;
+  int sockindex;
+  curl_socket_t *sockindex_ptr;
+  int connectdata_idx = ossl_get_ssl_conn_index();
+  int sockindex_idx = ossl_get_ssl_sockindex_index();
+
+  if(connectdata_idx < 0 || sockindex_idx < 0)
+    return 0;
+
+  conn = (struct connectdata*) SSL_get_ex_data(ssl, connectdata_idx);
+  if(!conn)
+    return 0;
+
+  data = conn->data;
+
+  /* The sockindex has been stored as a pointer to an array element */
+  sockindex_ptr = (curl_socket_t*) SSL_get_ex_data(ssl, sockindex_idx);
+  sockindex = (int)(sockindex_ptr - conn->sock);
+
+  if(SSL_SET_OPTION(primary.sessionid)) {
+    bool incache;
+    void *old_ssl_sessionid = NULL;
+
+    Curl_ssl_sessionid_lock(conn);
+    incache = !(Curl_ssl_getsessionid(conn, &old_ssl_sessionid, NULL,
+                                      sockindex));
+    if(incache) {
+      if(old_ssl_sessionid != ssl_sessionid) {
+        infof(data, "old SSL session ID is stale, removing\n");
+        Curl_ssl_delsessionid(conn, old_ssl_sessionid);
+        incache = FALSE;
+      }
+    }
+
+    if(!incache) {
+      if(!Curl_ssl_addsessionid(conn, ssl_sessionid,
+                                      0 /* unknown size */, sockindex)) {
+        /* the session has been put into the session cache */
+        res = 1;
+      }
+      else
+        failf(data, "failed to store ssl session");
+    }
+    Curl_ssl_sessionid_unlock(conn);
+  }
+
+  return res;
+}
+
 static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex)
 {
   CURLcode result = CURLE_OK;
@@ -2585,6 +2683,14 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex)
   }
 #endif
 
+  /* Enable the session cache because it's a prerequisite for the "new session"
+   * callback. Use the "external storage" mode to avoid that OpenSSL creates
+   * an internal session cache.
+   */
+  SSL_CTX_set_session_cache_mode(BACKEND->ctx,
+      SSL_SESS_CACHE_CLIENT | SSL_SESS_CACHE_NO_INTERNAL);
+  SSL_CTX_sess_set_new_cb(BACKEND->ctx, ossl_new_session_cb);
+
   /* give application a chance to interfere with SSL set up. */
   if(data->set.ssl.fsslctx) {
     result = (*data->set.ssl.fsslctx)(data, BACKEND->ctx,
@@ -2610,6 +2716,10 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex)
     SSL_set_tlsext_status_type(BACKEND->handle, TLSEXT_STATUSTYPE_ocsp);
 #endif
 
+#if defined(OPENSSL_IS_BORINGSSL) && defined(ALLOW_RENEG)
+  SSL_set_renegotiate_mode(BACKEND->handle, ssl_renegotiate_freely);
+#endif
+
   SSL_set_connect_state(BACKEND->handle);
 
   BACKEND->server_cert = 0x0;
@@ -2627,6 +2737,15 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex)
   /* Check if there's a cached ID we can/should use here! */
   if(SSL_SET_OPTION(primary.sessionid)) {
     void *ssl_sessionid = NULL;
+    int connectdata_idx = ossl_get_ssl_conn_index();
+    int sockindex_idx = ossl_get_ssl_sockindex_index();
+
+    if(connectdata_idx >= 0 && sockindex_idx >= 0) {
+      /* Store the data needed for the "new session" callback.
+       * The sockindex is stored as a pointer to an array element. */
+      SSL_set_ex_data(BACKEND->handle, connectdata_idx, conn);
+      SSL_set_ex_data(BACKEND->handle, sockindex_idx, conn->sock + sockindex);
+    }
 
     Curl_ssl_sessionid_lock(conn);
     if(!Curl_ssl_getsessionid(conn, &ssl_sessionid, NULL, sockindex)) {
@@ -2699,6 +2818,12 @@ static CURLcode ossl_connect_step2(struct connectdata *conn, int sockindex)
       connssl->connecting_state = ssl_connect_2_writing;
       return CURLE_OK;
     }
+#ifdef SSL_ERROR_WANT_ASYNC
+    if(SSL_ERROR_WANT_ASYNC == detail) {
+      connssl->connecting_state = ssl_connect_2;
+      return CURLE_OK;
+    }
+#endif
     else {
       /* untreated error */
       unsigned long errdetail;
@@ -2721,14 +2846,14 @@ static CURLcode ossl_connect_step2(struct connectdata *conn, int sockindex)
 
       if((lib == ERR_LIB_SSL) &&
          (reason == SSL_R_CERTIFICATE_VERIFY_FAILED)) {
-        result = CURLE_SSL_CACERT;
+        result = CURLE_PEER_FAILED_VERIFICATION;
 
         lerr = SSL_get_verify_result(BACKEND->handle);
         if(lerr != X509_V_OK) {
           *certverifyresult = lerr;
-          snprintf(error_buffer, sizeof(error_buffer),
-                   "SSL certificate problem: %s",
-                   X509_verify_cert_error_string(lerr));
+          msnprintf(error_buffer, sizeof(error_buffer),
+                    "SSL certificate problem: %s",
+                    X509_verify_cert_error_string(lerr));
         }
         else
           /* strcpy() is fine here as long as the string fits within
@@ -2795,6 +2920,9 @@ static CURLcode ossl_connect_step2(struct connectdata *conn, int sockindex)
       }
       else
         infof(data, "ALPN, server did not agree to a protocol\n");
+
+      Curl_multiuse_state(conn, conn->negnpn == CURL_HTTP_VERSION_2 ?
+                          BUNDLE_MULTIPLEX : BUNDLE_NO_MULTIUSE);
     }
 #endif
 
@@ -2839,7 +2967,7 @@ static void pubkey_show(struct Curl_easy *data,
   char *ptr;
   char namebuf[32];
 
-  snprintf(namebuf, sizeof(namebuf), "%s(%s)", type, name);
+  msnprintf(namebuf, sizeof(namebuf), "%s(%s)", type, name);
 
   if(bn)
     BN_print(mem, bn);
@@ -2900,8 +3028,8 @@ static int X509V3_ext(struct Curl_easy *data,
       while((j<(size_t)biomem->length) && (biomem->data[j] == ' '))
         j++;
       if(j<(size_t)biomem->length)
-        ptr += snprintf(ptr, sizeof(buf)-(ptr-buf), "%s%c", sep,
-                        biomem->data[j]);
+        ptr += msnprintf(ptr, sizeof(buf)-(ptr-buf), "%s%c", sep,
+                         biomem->data[j]);
     }
 
     Curl_ssl_push_certinfo(data, certnum, namebuf, buf);
@@ -3101,11 +3229,6 @@ static CURLcode get_cert_chain(struct connectdata *conn,
 #endif
         break;
       }
-#if 0
-      case EVP_PKEY_EC: /* symbol not present in OpenSSL 0.9.6 */
-        /* left TODO */
-        break;
-#endif
       }
       EVP_PKEY_free(pubkey);
     }
@@ -3214,20 +3337,8 @@ static CURLcode servercert(struct connectdata *conn,
     /* we've been asked to gather certificate info! */
     (void)get_cert_chain(conn, connssl);
 
-  fp = BIO_new(BIO_s_file());
-  if(fp == NULL) {
-    failf(data,
-          "BIO_new return NULL, " OSSL_PACKAGE
-          " error %s",
-          ossl_strerror(ERR_get_error(), error_buffer,
-                        sizeof(error_buffer)) );
-    BIO_free(mem);
-    return CURLE_OUT_OF_MEMORY;
-  }
-
   BACKEND->server_cert = SSL_get_peer_certificate(BACKEND->handle);
   if(!BACKEND->server_cert) {
-    BIO_free(fp);
     BIO_free(mem);
     if(!strict)
       return CURLE_OK;
@@ -3262,7 +3373,6 @@ static CURLcode servercert(struct connectdata *conn,
   if(SSL_CONN_CONFIG(verifyhost)) {
     result = verifyhost(conn, BACKEND->server_cert);
     if(result) {
-      BIO_free(fp);
       X509_free(BACKEND->server_cert);
       BACKEND->server_cert = NULL;
       return result;
@@ -3284,6 +3394,18 @@ static CURLcode servercert(struct connectdata *conn,
 
     /* e.g. match issuer name with provided issuer certificate */
     if(SSL_SET_OPTION(issuercert)) {
+      fp = BIO_new(BIO_s_file());
+      if(fp == NULL) {
+        failf(data,
+              "BIO_new return NULL, " OSSL_PACKAGE
+              " error %s",
+              ossl_strerror(ERR_get_error(), error_buffer,
+                            sizeof(error_buffer)) );
+        X509_free(BACKEND->server_cert);
+        BACKEND->server_cert = NULL;
+        return CURLE_OUT_OF_MEMORY;
+      }
+
       if(BIO_read_filename(fp, SSL_SET_OPTION(issuercert)) <= 0) {
         if(strict)
           failf(data, "SSL: Unable to open issuer cert (%s)",
@@ -3319,6 +3441,7 @@ static CURLcode servercert(struct connectdata *conn,
 
       infof(data, " SSL certificate issuer check ok (%s)\n",
             SSL_SET_OPTION(issuercert));
+      BIO_free(fp);
       X509_free(issuer);
     }
 
@@ -3347,7 +3470,6 @@ static CURLcode servercert(struct connectdata *conn,
   if(SSL_CONN_CONFIG(verifystatus)) {
     result = verifystatus(conn, connssl);
     if(result) {
-      BIO_free(fp);
       X509_free(BACKEND->server_cert);
       BACKEND->server_cert = NULL;
       return result;
@@ -3367,7 +3489,6 @@ static CURLcode servercert(struct connectdata *conn,
       failf(data, "SSL: public key does not match pinned public key!");
   }
 
-  BIO_free(fp);
   X509_free(BACKEND->server_cert);
   BACKEND->server_cert = NULL;
   connssl->connecting_state = ssl_connect_done;
@@ -3378,52 +3499,10 @@ static CURLcode servercert(struct connectdata *conn,
 static CURLcode ossl_connect_step3(struct connectdata *conn, int sockindex)
 {
   CURLcode result = CURLE_OK;
-  struct Curl_easy *data = conn->data;
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
 
   DEBUGASSERT(ssl_connect_3 == connssl->connecting_state);
 
-  if(SSL_SET_OPTION(primary.sessionid)) {
-    bool incache;
-    SSL_SESSION *our_ssl_sessionid;
-    void *old_ssl_sessionid = NULL;
-
-    our_ssl_sessionid = SSL_get1_session(BACKEND->handle);
-
-    /* SSL_get1_session() will increment the reference count and the session
-        will stay in memory until explicitly freed with SSL_SESSION_free(3),
-        regardless of its state. */
-
-    Curl_ssl_sessionid_lock(conn);
-    incache = !(Curl_ssl_getsessionid(conn, &old_ssl_sessionid, NULL,
-                                      sockindex));
-    if(incache) {
-      if(old_ssl_sessionid != our_ssl_sessionid) {
-        infof(data, "old SSL session ID is stale, removing\n");
-        Curl_ssl_delsessionid(conn, old_ssl_sessionid);
-        incache = FALSE;
-      }
-    }
-
-    if(!incache) {
-      result = Curl_ssl_addsessionid(conn, our_ssl_sessionid,
-                                      0 /* unknown size */, sockindex);
-      if(result) {
-        Curl_ssl_sessionid_unlock(conn);
-        failf(data, "failed to store ssl session");
-        return result;
-      }
-    }
-    else {
-      /* Session was incache, so refcount already incremented earlier.
-        * Avoid further increments with each SSL_get1_session() call.
-        * This does not free the session as refcount remains > 0
-        */
-      SSL_SESSION_free(our_ssl_sessionid);
-    }
-    Curl_ssl_sessionid_unlock(conn);
-  }
-
   /*
    * We check certificates to authenticate the server; otherwise we risk
    * man-in-the-middle attack; NEVERTHELESS, if we're told explicitly not to
@@ -3678,7 +3757,10 @@ static ssize_t ossl_recv(struct connectdata *conn, /* connection data */
 
     switch(err) {
     case SSL_ERROR_NONE: /* this is not an error */
+      break;
     case SSL_ERROR_ZERO_RETURN: /* no more data */
+      /* close_notify alert */
+      connclose(conn, "TLS close_notify");
       break;
     case SSL_ERROR_WANT_READ:
     case SSL_ERROR_WANT_WRITE:
@@ -3709,8 +3791,13 @@ static ssize_t ossl_recv(struct connectdata *conn, /* connection data */
 static size_t Curl_ossl_version(char *buffer, size_t size)
 {
 #ifdef OPENSSL_IS_BORINGSSL
-  return snprintf(buffer, size, OSSL_PACKAGE);
-#else /* OPENSSL_IS_BORINGSSL */
+  return msnprintf(buffer, size, OSSL_PACKAGE);
+#elif defined(HAVE_OPENSSL_VERSION) && defined(OPENSSL_VERSION_STRING)
+  return msnprintf(buffer, size, "%s/%s",
+                   OSSL_PACKAGE, OpenSSL_version(OPENSSL_VERSION_STRING));
+#else
+  /* not BoringSSL and not using OpenSSL_version */
+
   char sub[3];
   unsigned long ssleay_value;
   sub[2]='\0';
@@ -3736,12 +3823,16 @@ static size_t Curl_ossl_version(char *buffer, size_t size)
       sub[0]='\0';
   }
 
-  return snprintf(buffer, size, "%s/%lx.%lx.%lx%s",
-                  OSSL_PACKAGE,
-                  (ssleay_value>>28)&0xf,
-                  (ssleay_value>>20)&0xff,
-                  (ssleay_value>>12)&0xff,
-                  sub);
+  return msnprintf(buffer, size, "%s/%lx.%lx.%lx%s"
+#ifdef OPENSSL_FIPS
+                   "-fips"
+#endif
+                   ,
+                   OSSL_PACKAGE,
+                   (ssleay_value>>28)&0xf,
+                   (ssleay_value>>20)&0xff,
+                   (ssleay_value>>12)&0xff,
+                   sub);
 #endif /* OPENSSL_IS_BORINGSSL */
 }
 
diff --git a/Utilities/cmcurl/lib/vtls/polarssl.c b/Utilities/cmcurl/lib/vtls/polarssl.c
index 27af0cc..7ea26b4 100644
--- a/Utilities/cmcurl/lib/vtls/polarssl.c
+++ b/Utilities/cmcurl/lib/vtls/polarssl.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 2012 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 2012 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
  * Copyright (C) 2010 - 2011, Hoi-Ho Chan, <hoiho.chan@gmail.com>
  *
  * This software is licensed as described in the file COPYING, which
@@ -55,6 +55,7 @@
 #include "select.h"
 #include "strcase.h"
 #include "polarssl_threadlock.h"
+#include "multiif.h"
 #include "curl_printf.h"
 #include "curl_memory.h"
 /* The last #include file should be: */
@@ -497,7 +498,7 @@ polarssl_connect_step2(struct connectdata *conn,
 
     if(ret & BADCERT_REVOKED) {
       failf(data, "Cert verify failed: BADCERT_REVOKED");
-      return CURLE_SSL_CACERT;
+      return CURLE_PEER_FAILED_VERIFICATION;
     }
 
     if(ret & BADCERT_CN_MISMATCH)
@@ -593,6 +594,8 @@ polarssl_connect_step2(struct connectdata *conn,
     }
     else
       infof(data, "ALPN, server did not agree to a protocol\n");
+    Curl_multiuse_state(conn, conn->negnpn == CURL_HTTP_VERSION_2 ?
+                        BUNDLE_MULTIPLEX : BUNDLE_NO_MULTIUSE);
   }
 #endif
 
@@ -716,9 +719,9 @@ static void Curl_polarssl_session_free(void *ptr)
 static size_t Curl_polarssl_version(char *buffer, size_t size)
 {
   unsigned int version = version_get_number();
-  return snprintf(buffer, size, "%s/%d.%d.%d",
-                  version >= 0x01030A00?"mbedTLS":"PolarSSL",
-                  version>>24, (version>>16)&0xff, (version>>8)&0xff);
+  return msnprintf(buffer, size, "%s/%d.%d.%d",
+                   version >= 0x01030A00?"mbedTLS":"PolarSSL",
+                   version>>24, (version>>16)&0xff, (version>>8)&0xff);
 }
 
 static CURLcode
@@ -908,9 +911,7 @@ const struct Curl_ssl Curl_ssl_polarssl = {
   Curl_none_check_cxn,               /* check_cxn */
   Curl_none_shutdown,                /* shutdown */
   Curl_polarssl_data_pending,        /* data_pending */
-  /* This might cause libcurl to use a weeker random!
-   * TODO: use Polarssl's CTR-DRBG or HMAC-DRBG
-  */
+  /* This might cause libcurl to use a weeker random! */
   Curl_none_random,                  /* random */
   Curl_none_cert_status_request,     /* cert_status_request */
   Curl_polarssl_connect,             /* connect */
diff --git a/Utilities/cmcurl/lib/vtls/polarssl_threadlock.c b/Utilities/cmcurl/lib/vtls/polarssl_threadlock.c
index dd5fbd7..27c94b1 100644
--- a/Utilities/cmcurl/lib/vtls/polarssl_threadlock.c
+++ b/Utilities/cmcurl/lib/vtls/polarssl_threadlock.c
@@ -23,16 +23,15 @@
 #include "curl_setup.h"
 
 #if (defined(USE_POLARSSL) || defined(USE_MBEDTLS)) && \
-    (defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32))
-
-#if defined(USE_THREADS_POSIX)
-#  ifdef HAVE_PTHREAD_H
-#    include <pthread.h>
-#  endif
-#elif defined(USE_THREADS_WIN32)
-#  ifdef HAVE_PROCESS_H
-#    include <process.h>
-#  endif
+    ((defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)) || \
+     (defined(USE_THREADS_WIN32) && defined(HAVE_PROCESS_H)))
+
+#if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
+#  include <pthread.h>
+#  define POLARSSL_MUTEX_T pthread_mutex_t
+#elif defined(USE_THREADS_WIN32) && defined(HAVE_PROCESS_H)
+#  include <process.h>
+#  define POLARSSL_MUTEX_T HANDLE
 #endif
 
 #include "polarssl_threadlock.h"
@@ -50,25 +49,23 @@ static POLARSSL_MUTEX_T *mutex_buf = NULL;
 int Curl_polarsslthreadlock_thread_setup(void)
 {
   int i;
-  int ret;
 
   mutex_buf = calloc(NUMT * sizeof(POLARSSL_MUTEX_T), 1);
   if(!mutex_buf)
     return 0;     /* error, no number of threads defined */
 
-#ifdef HAVE_PTHREAD_H
   for(i = 0;  i < NUMT;  i++) {
+    int ret;
+#if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
     ret = pthread_mutex_init(&mutex_buf[i], NULL);
     if(ret)
       return 0; /* pthread_mutex_init failed */
-  }
-#elif defined(HAVE_PROCESS_H)
-  for(i = 0;  i < NUMT;  i++) {
+#elif defined(USE_THREADS_WIN32) && defined(HAVE_PROCESS_H)
     mutex_buf[i] = CreateMutex(0, FALSE, 0);
     if(mutex_buf[i] == 0)
       return 0;  /* CreateMutex failed */
+#endif /* USE_THREADS_POSIX && HAVE_PTHREAD_H */
   }
-#endif /* HAVE_PTHREAD_H */
 
   return 1; /* OK */
 }
@@ -76,24 +73,22 @@ int Curl_polarsslthreadlock_thread_setup(void)
 int Curl_polarsslthreadlock_thread_cleanup(void)
 {
   int i;
-  int ret;
 
   if(!mutex_buf)
     return 0; /* error, no threads locks defined */
 
-#ifdef HAVE_PTHREAD_H
   for(i = 0; i < NUMT; i++) {
+    int ret;
+#if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
     ret = pthread_mutex_destroy(&mutex_buf[i]);
     if(ret)
       return 0; /* pthread_mutex_destroy failed */
-  }
-#elif defined(HAVE_PROCESS_H)
-  for(i = 0; i < NUMT; i++) {
+#elif defined(USE_THREADS_WIN32) && defined(HAVE_PROCESS_H)
     ret = CloseHandle(mutex_buf[i]);
     if(!ret)
       return 0; /* CloseHandle failed */
+#endif /* USE_THREADS_POSIX && HAVE_PTHREAD_H */
   }
-#endif /* HAVE_PTHREAD_H */
   free(mutex_buf);
   mutex_buf = NULL;
 
@@ -102,51 +97,47 @@ int Curl_polarsslthreadlock_thread_cleanup(void)
 
 int Curl_polarsslthreadlock_lock_function(int n)
 {
-  int ret;
-#ifdef HAVE_PTHREAD_H
   if(n < NUMT) {
+    int ret;
+#if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
     ret = pthread_mutex_lock(&mutex_buf[n]);
     if(ret) {
       DEBUGF(fprintf(stderr,
                      "Error: polarsslthreadlock_lock_function failed\n"));
       return 0; /* pthread_mutex_lock failed */
     }
-  }
-#elif defined(HAVE_PROCESS_H)
-  if(n < NUMT) {
+#elif defined(USE_THREADS_WIN32) && defined(HAVE_PROCESS_H)
     ret = (WaitForSingleObject(mutex_buf[n], INFINITE) == WAIT_FAILED?1:0);
     if(ret) {
       DEBUGF(fprintf(stderr,
                      "Error: polarsslthreadlock_lock_function failed\n"));
       return 0; /* pthread_mutex_lock failed */
     }
+#endif /* USE_THREADS_POSIX && HAVE_PTHREAD_H */
   }
-#endif /* HAVE_PTHREAD_H */
   return 1; /* OK */
 }
 
 int Curl_polarsslthreadlock_unlock_function(int n)
 {
-  int ret;
-#ifdef HAVE_PTHREAD_H
   if(n < NUMT) {
+    int ret;
+#if defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)
     ret = pthread_mutex_unlock(&mutex_buf[n]);
     if(ret) {
       DEBUGF(fprintf(stderr,
                      "Error: polarsslthreadlock_unlock_function failed\n"));
       return 0; /* pthread_mutex_unlock failed */
     }
-  }
-#elif defined(HAVE_PROCESS_H)
-  if(n < NUMT) {
+#elif defined(USE_THREADS_WIN32) && defined(HAVE_PROCESS_H)
     ret = ReleaseMutex(mutex_buf[n]);
     if(!ret) {
       DEBUGF(fprintf(stderr,
                      "Error: polarsslthreadlock_unlock_function failed\n"));
       return 0; /* pthread_mutex_lock failed */
     }
+#endif /* USE_THREADS_POSIX && HAVE_PTHREAD_H */
   }
-#endif /* HAVE_PTHREAD_H */
   return 1; /* OK */
 }
 
diff --git a/Utilities/cmcurl/lib/vtls/polarssl_threadlock.h b/Utilities/cmcurl/lib/vtls/polarssl_threadlock.h
index dda5359..1226475 100644
--- a/Utilities/cmcurl/lib/vtls/polarssl_threadlock.h
+++ b/Utilities/cmcurl/lib/vtls/polarssl_threadlock.h
@@ -26,13 +26,8 @@
 
 #if (defined USE_POLARSSL) || (defined USE_MBEDTLS)
 
-#if defined(USE_THREADS_POSIX)
-#  define POLARSSL_MUTEX_T       pthread_mutex_t
-#elif defined(USE_THREADS_WIN32)
-#  define POLARSSL_MUTEX_T       HANDLE
-#endif
-
-#if defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32)
+#if (defined(USE_THREADS_POSIX) && defined(HAVE_PTHREAD_H)) || \
+    (defined(USE_THREADS_WIN32) && defined(HAVE_PROCESS_H))
 
 int Curl_polarsslthreadlock_thread_setup(void);
 int Curl_polarsslthreadlock_thread_cleanup(void);
diff --git a/Utilities/cmcurl/lib/vtls/schannel.c b/Utilities/cmcurl/lib/vtls/schannel.c
index e442692..0f6f734 100644
--- a/Utilities/cmcurl/lib/vtls/schannel.c
+++ b/Utilities/cmcurl/lib/vtls/schannel.c
@@ -7,7 +7,7 @@
  *
  * Copyright (C) 2012 - 2016, Marc Hoersken, <info@marc-hoersken.de>
  * Copyright (C) 2012, Mark Salisbury, <mark.salisbury@hp.com>
- * Copyright (C) 2012 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 2012 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -23,9 +23,8 @@
  ***************************************************************************/
 
 /*
- * Source file for all SChannel-specific code for the TLS/SSL layer. No code
+ * Source file for all Schannel-specific code for the TLS/SSL layer. No code
  * but vtls.c should ever call or use these functions.
- *
  */
 
 /*
@@ -59,6 +58,7 @@
 #include "warnless.h"
 #include "x509asn1.h"
 #include "curl_printf.h"
+#include "multiif.h"
 #include "system_win32.h"
 
  /* The last #include file should be: */
@@ -196,7 +196,7 @@ set_ssl_version_min_max(SCHANNEL_CRED *schannel_cred, struct connectdata *conn)
         schannel_cred->grbitEnabledProtocols |= SP_PROT_TLS1_2_CLIENT;
         break;
       case CURL_SSLVERSION_TLSv1_3:
-        failf(data, "Schannel: TLS 1.3 is not yet supported");
+        failf(data, "schannel: TLS 1.3 is not yet supported");
         return CURLE_SSL_CONNECT_ERROR;
     }
   }
@@ -325,6 +325,9 @@ get_alg_id_by_name(char *name)
 #ifdef CALG_ECDSA
   CIPHEROPTION(CALG_ECDSA);
 #endif
+#ifdef CALG_ECDH_EPHEM
+  CIPHEROPTION(CALG_ECDH_EPHEM);
+#endif
   return 0;
 }
 
@@ -357,6 +360,7 @@ get_cert_location(TCHAR *path, DWORD *store_name, TCHAR **store_path,
                   TCHAR **thumbprint)
 {
   TCHAR *sep;
+  TCHAR *store_path_start;
   size_t store_name_len;
 
   sep = _tcschr(path, TEXT('\\'));
@@ -387,13 +391,17 @@ get_cert_location(TCHAR *path, DWORD *store_name, TCHAR **store_path,
   else
     return CURLE_SSL_CERTPROBLEM;
 
-  *store_path = sep + 1;
+  store_path_start = sep + 1;
 
-  sep = _tcschr(*store_path, TEXT('\\'));
+  sep = _tcschr(store_path_start, TEXT('\\'));
   if(sep == NULL)
     return CURLE_SSL_CERTPROBLEM;
 
-  *sep = 0;
+  *sep = TEXT('\0');
+  *store_path = _tcsdup(store_path_start);
+  *sep = TEXT('\\');
+  if(*store_path == NULL)
+    return CURLE_OUT_OF_MEMORY;
 
   *thumbprint = sep + 1;
   if(_tcslen(*thumbprint) != CERT_THUMBPRINT_STR_LEN)
@@ -429,14 +437,15 @@ schannel_connect_step1(struct connectdata *conn, int sockindex)
   char * const hostname = SSL_IS_PROXY() ? conn->http_proxy.host.name :
     conn->host.name;
 
-  infof(data, "schannel: SSL/TLS connection with %s port %hu (step 1/3)\n",
-        hostname, conn->remote_port);
+  DEBUGF(infof(data,
+               "schannel: SSL/TLS connection with %s port %hu (step 1/3)\n",
+               hostname, conn->remote_port));
 
   if(Curl_verify_windows_version(5, 1, PLATFORM_WINNT,
                                  VERSION_LESS_THAN_EQUAL)) {
-     /* SChannel in Windows XP (OS version 5.1) uses legacy handshakes and
+     /* Schannel in Windows XP (OS version 5.1) uses legacy handshakes and
         algorithms that may not be supported by all servers. */
-     infof(data, "schannel: WinSSL version is old and may not be able to "
+     infof(data, "schannel: Windows version is old and may not be able to "
            "connect to some servers due to lack of SNI, algorithms, etc.\n");
   }
 
@@ -490,12 +499,13 @@ schannel_connect_step1(struct connectdata *conn, int sockindex)
     Curl_ssl_sessionid_lock(conn);
     if(!Curl_ssl_getsessionid(conn, (void **)&old_cred, NULL, sockindex)) {
       BACKEND->cred = old_cred;
-      infof(data, "schannel: re-using existing credential handle\n");
+      DEBUGF(infof(data, "schannel: re-using existing credential handle\n"));
 
       /* increment the reference counter of the credential/session handle */
       BACKEND->cred->refcount++;
-      infof(data, "schannel: incremented credential handle refcount = %d\n",
-            BACKEND->cred->refcount);
+      DEBUGF(infof(data,
+                   "schannel: incremented credential handle refcount = %d\n",
+                   BACKEND->cred->refcount));
     }
     Curl_ssl_sessionid_unlock(conn);
   }
@@ -513,31 +523,32 @@ schannel_connect_step1(struct connectdata *conn, int sockindex)
 #endif
         schannel_cred.dwFlags = SCH_CRED_AUTO_CRED_VALIDATION;
 
-      /* TODO s/data->set.ssl.no_revoke/SSL_SET_OPTION(no_revoke)/g */
       if(data->set.ssl.no_revoke) {
         schannel_cred.dwFlags |= SCH_CRED_IGNORE_NO_REVOCATION_CHECK |
           SCH_CRED_IGNORE_REVOCATION_OFFLINE;
 
-        infof(data, "schannel: disabled server certificate revocation "
-                    "checks\n");
+        DEBUGF(infof(data, "schannel: disabled server certificate revocation "
+                     "checks\n"));
       }
       else {
         schannel_cred.dwFlags |= SCH_CRED_REVOCATION_CHECK_CHAIN;
-        infof(data, "schannel: checking server certificate revocation\n");
+        DEBUGF(infof(data,
+                     "schannel: checking server certificate revocation\n"));
       }
     }
     else {
       schannel_cred.dwFlags = SCH_CRED_MANUAL_CRED_VALIDATION |
         SCH_CRED_IGNORE_NO_REVOCATION_CHECK |
         SCH_CRED_IGNORE_REVOCATION_OFFLINE;
-      infof(data, "schannel: disabled server certificate revocation checks\n");
+      DEBUGF(infof(data,
+                   "schannel: disabled server cert revocation checks\n"));
     }
 
     if(!conn->ssl_config.verifyhost) {
       schannel_cred.dwFlags |= SCH_CRED_NO_SERVERNAME_CHECK;
-      infof(data, "schannel: verifyhost setting prevents Schannel from "
-            "comparing the supplied target name with the subject "
-            "names in server certificates.\n");
+      DEBUGF(infof(data, "schannel: verifyhost setting prevents Schannel from "
+                   "comparing the supplied target name with the subject "
+                   "names in server certificates.\n"));
     }
 
     switch(conn->ssl_config.version) {
@@ -609,9 +620,11 @@ schannel_connect_step1(struct connectdata *conn, int sockindex)
         failf(data, "schannel: Failed to open cert store %x %s, "
               "last error is %x",
               cert_store_name, cert_store_path, GetLastError());
+        free(cert_store_path);
         Curl_unicodefree(cert_path);
         return CURLE_SSL_CERTPROBLEM;
       }
+      free(cert_store_path);
 
       cert_thumbprint.pbData = cert_thumbprint_data;
       cert_thumbprint.cbData = CERT_THUMBPRINT_DATA_LEN;
@@ -674,8 +687,9 @@ schannel_connect_step1(struct connectdata *conn, int sockindex)
       CertFreeCertificateContext(client_certs[0]);
 
     if(sspi_status != SEC_E_OK) {
+      char buffer[STRERROR_LEN];
       failf(data, "schannel: AcquireCredentialsHandle failed: %s",
-            Curl_sspi_strerror(conn, sspi_status));
+            Curl_sspi_strerror(sspi_status, buffer, sizeof(buffer)));
       Curl_safefree(BACKEND->cred);
       switch(sspi_status) {
         case SEC_E_INSUFFICIENT_MEMORY:
@@ -790,15 +804,16 @@ schannel_connect_step1(struct connectdata *conn, int sockindex)
   Curl_unicodefree(host_name);
 
   if(sspi_status != SEC_I_CONTINUE_NEEDED) {
+    char buffer[STRERROR_LEN];
     Curl_safefree(BACKEND->ctxt);
     switch(sspi_status) {
       case SEC_E_INSUFFICIENT_MEMORY:
         failf(data, "schannel: initial InitializeSecurityContext failed: %s",
-              Curl_sspi_strerror(conn, sspi_status));
+              Curl_sspi_strerror(sspi_status, buffer, sizeof(buffer)));
         return CURLE_OUT_OF_MEMORY;
       case SEC_E_WRONG_PRINCIPAL:
         failf(data, "schannel: SNI or certificate check failed: %s",
-              Curl_sspi_strerror(conn, sspi_status));
+              Curl_sspi_strerror(sspi_status, buffer, sizeof(buffer)));
         return CURLE_PEER_FAILED_VERIFICATION;
         /*
       case SEC_E_INVALID_HANDLE:
@@ -813,13 +828,13 @@ schannel_connect_step1(struct connectdata *conn, int sockindex)
         */
       default:
         failf(data, "schannel: initial InitializeSecurityContext failed: %s",
-              Curl_sspi_strerror(conn, sspi_status));
+              Curl_sspi_strerror(sspi_status, buffer, sizeof(buffer)));
         return CURLE_SSL_CONNECT_ERROR;
     }
   }
 
-  infof(data, "schannel: sending initial handshake data: "
-        "sending %lu bytes...\n", outbuf.cbBuffer);
+  DEBUGF(infof(data, "schannel: sending initial handshake data: "
+               "sending %lu bytes...\n", outbuf.cbBuffer));
 
   /* send initial handshake data which is now stored in output buffer */
   result = Curl_write_plain(conn, conn->sock[sockindex], outbuf.pvBuffer,
@@ -831,8 +846,8 @@ schannel_connect_step1(struct connectdata *conn, int sockindex)
     return CURLE_SSL_CONNECT_ERROR;
   }
 
-  infof(data, "schannel: sent initial handshake data: "
-        "sent %zd bytes\n", written);
+  DEBUGF(infof(data, "schannel: sent initial handshake data: "
+               "sent %zd bytes\n", written));
 
   BACKEND->recv_unrecoverable_err = CURLE_OK;
   BACKEND->recv_sspi_close_notify = false;
@@ -853,13 +868,11 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
   struct Curl_easy *data = conn->data;
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   unsigned char *reallocated_buffer;
-  size_t reallocated_length;
   SecBuffer outbuf[3];
   SecBufferDesc outbuf_desc;
   SecBuffer inbuf[2];
   SecBufferDesc inbuf_desc;
   SECURITY_STATUS sspi_status = SEC_E_OK;
-  TCHAR *host_name;
   CURLcode result;
   bool doread;
   char * const hostname = SSL_IS_PROXY() ? conn->http_proxy.host.name :
@@ -868,8 +881,9 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
 
   doread = (connssl->connecting_state != ssl_connect_2_writing) ? TRUE : FALSE;
 
-  infof(data, "schannel: SSL/TLS connection with %s port %hu (step 2/3)\n",
-        hostname, conn->remote_port);
+  DEBUGF(infof(data,
+               "schannel: SSL/TLS connection with %s port %hu (step 2/3)\n",
+               hostname, conn->remote_port));
 
   if(!BACKEND->cred || !BACKEND->ctxt)
     return CURLE_SSL_CONNECT_ERROR;
@@ -901,7 +915,7 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
   if(BACKEND->encdata_length - BACKEND->encdata_offset <
      CURL_SCHANNEL_BUFFER_FREE_SIZE) {
     /* increase internal encrypted data buffer */
-    reallocated_length = BACKEND->encdata_offset +
+    size_t reallocated_length = BACKEND->encdata_offset +
       CURL_SCHANNEL_BUFFER_FREE_SIZE;
     reallocated_buffer = realloc(BACKEND->encdata_buffer,
                                  reallocated_length);
@@ -917,6 +931,7 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
   }
 
   for(;;) {
+    TCHAR *host_name;
     if(doread) {
       /* read encrypted handshake data from socket */
       result = Curl_read_plain(conn->sock[sockindex],
@@ -928,8 +943,8 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
       if(result == CURLE_AGAIN) {
         if(connssl->connecting_state != ssl_connect_2_writing)
           connssl->connecting_state = ssl_connect_2_reading;
-        infof(data, "schannel: failed to receive handshake, "
-              "need more data\n");
+        DEBUGF(infof(data, "schannel: failed to receive handshake, "
+                     "need more data\n"));
         return CURLE_OK;
       }
       else if((result != CURLE_OK) || (nread == 0)) {
@@ -941,11 +956,12 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
       /* increase encrypted data buffer offset */
       BACKEND->encdata_offset += nread;
       BACKEND->encdata_is_incomplete = false;
-      infof(data, "schannel: encrypted data got %zd\n", nread);
+      DEBUGF(infof(data, "schannel: encrypted data got %zd\n", nread));
     }
 
-    infof(data, "schannel: encrypted data buffer: offset %zu length %zu\n",
-          BACKEND->encdata_offset, BACKEND->encdata_length);
+    DEBUGF(infof(data,
+                 "schannel: encrypted data buffer: offset %zu length %zu\n",
+                 BACKEND->encdata_offset, BACKEND->encdata_length));
 
     /* setup input buffers */
     InitSecBuffer(&inbuf[0], SECBUFFER_TOKEN, malloc(BACKEND->encdata_offset),
@@ -988,7 +1004,8 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
     if(sspi_status == SEC_E_INCOMPLETE_MESSAGE) {
       BACKEND->encdata_is_incomplete = true;
       connssl->connecting_state = ssl_connect_2_reading;
-      infof(data, "schannel: received incomplete message, need more data\n");
+      DEBUGF(infof(data,
+                   "schannel: received incomplete message, need more data\n"));
       return CURLE_OK;
     }
 
@@ -999,7 +1016,8 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
        !(BACKEND->req_flags & ISC_REQ_USE_SUPPLIED_CREDS)) {
       BACKEND->req_flags |= ISC_REQ_USE_SUPPLIED_CREDS;
       connssl->connecting_state = ssl_connect_2_writing;
-      infof(data, "schannel: a client certificate has been requested\n");
+      DEBUGF(infof(data,
+                   "schannel: a client certificate has been requested\n"));
       return CURLE_OK;
     }
 
@@ -1008,8 +1026,8 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
       for(i = 0; i < 3; i++) {
         /* search for handshake tokens that need to be send */
         if(outbuf[i].BufferType == SECBUFFER_TOKEN && outbuf[i].cbBuffer > 0) {
-          infof(data, "schannel: sending next handshake data: "
-                "sending %lu bytes...\n", outbuf[i].cbBuffer);
+          DEBUGF(infof(data, "schannel: sending next handshake data: "
+                       "sending %lu bytes...\n", outbuf[i].cbBuffer));
 
           /* send handshake token to server */
           result = Curl_write_plain(conn, conn->sock[sockindex],
@@ -1030,14 +1048,15 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
       }
     }
     else {
+      char buffer[STRERROR_LEN];
       switch(sspi_status) {
         case SEC_E_INSUFFICIENT_MEMORY:
           failf(data, "schannel: next InitializeSecurityContext failed: %s",
-                Curl_sspi_strerror(conn, sspi_status));
+                Curl_sspi_strerror(sspi_status, buffer, sizeof(buffer)));
           return CURLE_OUT_OF_MEMORY;
         case SEC_E_WRONG_PRINCIPAL:
           failf(data, "schannel: SNI or certificate check failed: %s",
-                Curl_sspi_strerror(conn, sspi_status));
+                Curl_sspi_strerror(sspi_status, buffer, sizeof(buffer)));
           return CURLE_PEER_FAILED_VERIFICATION;
           /*
         case SEC_E_INVALID_HANDLE:
@@ -1052,14 +1071,15 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
           */
         default:
           failf(data, "schannel: next InitializeSecurityContext failed: %s",
-                Curl_sspi_strerror(conn, sspi_status));
+                Curl_sspi_strerror(sspi_status, buffer, sizeof(buffer)));
           return CURLE_SSL_CONNECT_ERROR;
       }
     }
 
     /* check if there was additional remaining encrypted data */
     if(inbuf[1].BufferType == SECBUFFER_EXTRA && inbuf[1].cbBuffer > 0) {
-      infof(data, "schannel: encrypted data length: %lu\n", inbuf[1].cbBuffer);
+      DEBUGF(infof(data, "schannel: encrypted data length: %lu\n",
+                   inbuf[1].cbBuffer));
       /*
         There are two cases where we could be getting extra data here:
         1) If we're renegotiating a connection and the handshake is already
@@ -1098,7 +1118,7 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
   /* check if the handshake is complete */
   if(sspi_status == SEC_E_OK) {
     connssl->connecting_state = ssl_connect_3;
-    infof(data, "schannel: SSL/TLS handshake complete\n");
+    DEBUGF(infof(data, "schannel: SSL/TLS handshake complete\n"));
   }
 
   pubkey_ptr = SSL_IS_PROXY() ?
@@ -1114,13 +1134,68 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
 
 #ifdef HAS_MANUAL_VERIFY_API
   if(conn->ssl_config.verifypeer && BACKEND->use_manual_cred_validation) {
-    return verify_certificate(conn, sockindex);
+    return Curl_verify_certificate(conn, sockindex);
   }
 #endif
 
   return CURLE_OK;
 }
 
+static bool
+valid_cert_encoding(const CERT_CONTEXT *cert_context)
+{
+  return (cert_context != NULL) &&
+    ((cert_context->dwCertEncodingType & X509_ASN_ENCODING) != 0) &&
+    (cert_context->pbCertEncoded != NULL) &&
+    (cert_context->cbCertEncoded > 0);
+}
+
+typedef bool(*Read_crt_func)(const CERT_CONTEXT *ccert_context, void *arg);
+
+static void
+traverse_cert_store(const CERT_CONTEXT *context, Read_crt_func func,
+                    void *arg)
+{
+  const CERT_CONTEXT *current_context = NULL;
+  bool should_continue = true;
+  while(should_continue &&
+        (current_context = CertEnumCertificatesInStore(
+          context->hCertStore,
+          current_context)) != NULL)
+    should_continue = func(current_context, arg);
+
+  if(current_context)
+    CertFreeCertificateContext(current_context);
+}
+
+static bool
+cert_counter_callback(const CERT_CONTEXT *ccert_context, void *certs_count)
+{
+  if(valid_cert_encoding(ccert_context))
+    (*(int *)certs_count)++;
+  return true;
+}
+
+struct Adder_args
+{
+  struct connectdata *conn;
+  CURLcode result;
+  int idx;
+};
+
+static bool
+add_cert_to_certinfo(const CERT_CONTEXT *ccert_context, void *raw_arg)
+{
+  struct Adder_args *args = (struct Adder_args*)raw_arg;
+  args->result = CURLE_OK;
+  if(valid_cert_encoding(ccert_context)) {
+    const char *beg = (const char *) ccert_context->pbCertEncoded;
+    const char *end = beg + ccert_context->cbCertEncoded;
+    args->result = Curl_extract_certinfo(args->conn, (args->idx)++, beg, end);
+  }
+  return args->result == CURLE_OK;
+}
+
 static CURLcode
 schannel_connect_step3(struct connectdata *conn, int sockindex)
 {
@@ -1129,7 +1204,7 @@ schannel_connect_step3(struct connectdata *conn, int sockindex)
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   SECURITY_STATUS sspi_status = SEC_E_OK;
   CERT_CONTEXT *ccert_context = NULL;
-#ifndef CURL_DISABLE_VERBOSE_STRINGS
+#ifdef DEBUGBUILD
   const char * const hostname = SSL_IS_PROXY() ? conn->http_proxy.host.name :
     conn->host.name;
 #endif
@@ -1139,8 +1214,9 @@ schannel_connect_step3(struct connectdata *conn, int sockindex)
 
   DEBUGASSERT(ssl_connect_3 == connssl->connecting_state);
 
-  infof(data, "schannel: SSL/TLS connection with %s port %hu (step 3/3)\n",
-        hostname, conn->remote_port);
+  DEBUGF(infof(data,
+               "schannel: SSL/TLS connection with %s port %hu (step 3/3)\n",
+               hostname, conn->remote_port));
 
   if(!BACKEND->cred)
     return CURLE_SSL_CONNECT_ERROR;
@@ -1192,6 +1268,8 @@ schannel_connect_step3(struct connectdata *conn, int sockindex)
     }
     else
       infof(data, "ALPN, server did not agree to a protocol\n");
+    Curl_multiuse_state(conn, conn->negnpn == CURL_HTTP_VERSION_2 ?
+                        BUNDLE_MULTIPLEX : BUNDLE_NO_MULTIUSE);
   }
 #endif
 
@@ -1205,7 +1283,8 @@ schannel_connect_step3(struct connectdata *conn, int sockindex)
                                       sockindex));
     if(incache) {
       if(old_cred != BACKEND->cred) {
-        infof(data, "schannel: old credential handle is stale, removing\n");
+        DEBUGF(infof(data,
+                     "schannel: old credential handle is stale, removing\n"));
         /* we're not taking old_cred ownership here, no refcount++ is needed */
         Curl_ssl_delsessionid(conn, (void *)old_cred);
         incache = FALSE;
@@ -1223,13 +1302,15 @@ schannel_connect_step3(struct connectdata *conn, int sockindex)
       else {
         /* this cred session is now also referenced by sessionid cache */
         BACKEND->cred->refcount++;
-        infof(data, "schannel: stored credential handle in session cache\n");
+        DEBUGF(infof(data,
+                     "schannel: stored credential handle in session cache\n"));
       }
     }
     Curl_ssl_sessionid_unlock(conn);
   }
 
   if(data->set.ssl.certinfo) {
+    int certs_count = 0;
     sspi_status = s_pSecFn->QueryContextAttributes(&BACKEND->ctxt->ctxt_handle,
       SECPKG_ATTR_REMOTE_CERT_CONTEXT, &ccert_context);
 
@@ -1238,15 +1319,15 @@ schannel_connect_step3(struct connectdata *conn, int sockindex)
       return CURLE_PEER_FAILED_VERIFICATION;
     }
 
-    result = Curl_ssl_init_certinfo(data, 1);
-    if(!result) {
-      if(((ccert_context->dwCertEncodingType & X509_ASN_ENCODING) != 0) &&
-         (ccert_context->cbCertEncoded > 0)) {
+    traverse_cert_store(ccert_context, cert_counter_callback, &certs_count);
 
-        const char *beg = (const char *) ccert_context->pbCertEncoded;
-        const char *end = beg + ccert_context->cbCertEncoded;
-        result = Curl_extract_certinfo(conn, 0, beg, end);
-      }
+    result = Curl_ssl_init_certinfo(data, certs_count);
+    if(!result) {
+      struct Adder_args args;
+      args.conn = conn;
+      args.idx = 0;
+      traverse_cert_store(ccert_context, add_cert_to_certinfo, &args);
+      result = args.result;
     }
     CertFreeCertificateContext(ccert_context);
     if(result)
@@ -1359,6 +1440,16 @@ schannel_connect_common(struct connectdata *conn, int sockindex,
     connssl->state = ssl_connection_complete;
     conn->recv[sockindex] = schannel_recv;
     conn->send[sockindex] = schannel_send;
+
+#ifdef SECPKG_ATTR_ENDPOINT_BINDINGS
+    /* When SSPI is used in combination with Schannel
+     * we need the Schannel context to create the Schannel
+     * binding to pass the IIS extended protection checks.
+     * Available on Windows 7 or later.
+     */
+    conn->sslContext = &BACKEND->ctxt->ctxt_handle;
+#endif
+
     *done = TRUE;
   }
   else
@@ -1543,7 +1634,7 @@ schannel_recv(struct connectdata *conn, int sockindex,
    * handled in the cleanup.
    */
 
-  infof(data, "schannel: client wants to read %zu bytes\n", len);
+  DEBUGF(infof(data, "schannel: client wants to read %zu bytes\n", len));
   *err = CURLE_OK;
 
   if(len && len <= BACKEND->decdata_offset) {
@@ -1588,12 +1679,13 @@ schannel_recv(struct connectdata *conn, int sockindex,
       BACKEND->encdata_buffer = reallocated_buffer;
       BACKEND->encdata_length = reallocated_length;
       size = BACKEND->encdata_length - BACKEND->encdata_offset;
-      infof(data, "schannel: encdata_buffer resized %zu\n",
-            BACKEND->encdata_length);
+      DEBUGF(infof(data, "schannel: encdata_buffer resized %zu\n",
+                   BACKEND->encdata_length));
     }
 
-    infof(data, "schannel: encrypted data buffer: offset %zu length %zu\n",
-          BACKEND->encdata_offset, BACKEND->encdata_length);
+    DEBUGF(infof(data,
+                 "schannel: encrypted data buffer: offset %zu length %zu\n",
+                 BACKEND->encdata_offset, BACKEND->encdata_length));
 
     /* read encrypted data from socket */
     *err = Curl_read_plain(conn->sock[sockindex],
@@ -1603,7 +1695,8 @@ schannel_recv(struct connectdata *conn, int sockindex,
     if(*err) {
       nread = -1;
       if(*err == CURLE_AGAIN)
-        infof(data, "schannel: Curl_read_plain returned CURLE_AGAIN\n");
+        DEBUGF(infof(data,
+                     "schannel: Curl_read_plain returned CURLE_AGAIN\n"));
       else if(*err == CURLE_RECV_ERROR)
         infof(data, "schannel: Curl_read_plain returned CURLE_RECV_ERROR\n");
       else
@@ -1611,17 +1704,18 @@ schannel_recv(struct connectdata *conn, int sockindex,
     }
     else if(nread == 0) {
       BACKEND->recv_connection_closed = true;
-      infof(data, "schannel: server closed the connection\n");
+      DEBUGF(infof(data, "schannel: server closed the connection\n"));
     }
     else if(nread > 0) {
       BACKEND->encdata_offset += (size_t)nread;
       BACKEND->encdata_is_incomplete = false;
-      infof(data, "schannel: encrypted data got %zd\n", nread);
+      DEBUGF(infof(data, "schannel: encrypted data got %zd\n", nread));
     }
   }
 
-  infof(data, "schannel: encrypted data buffer: offset %zu length %zu\n",
-        BACKEND->encdata_offset, BACKEND->encdata_length);
+  DEBUGF(infof(data,
+               "schannel: encrypted data buffer: offset %zu length %zu\n",
+               BACKEND->encdata_offset, BACKEND->encdata_length));
 
   /* decrypt loop */
   while(BACKEND->encdata_offset > 0 && sspi_status == SEC_E_OK &&
@@ -1649,8 +1743,8 @@ schannel_recv(struct connectdata *conn, int sockindex,
       /* check for successfully decrypted data, even before actual
          renegotiation or shutdown of the connection context */
       if(inbuf[1].BufferType == SECBUFFER_DATA) {
-        infof(data, "schannel: decrypted data length: %lu\n",
-              inbuf[1].cbBuffer);
+        DEBUGF(infof(data, "schannel: decrypted data length: %lu\n",
+                     inbuf[1].cbBuffer));
 
         /* increase buffer in order to fit the received amount of data */
         size = inbuf[1].cbBuffer > CURL_SCHANNEL_BUFFER_FREE_SIZE ?
@@ -1682,15 +1776,16 @@ schannel_recv(struct connectdata *conn, int sockindex,
           BACKEND->decdata_offset += size;
         }
 
-        infof(data, "schannel: decrypted data added: %zu\n", size);
-        infof(data, "schannel: decrypted data cached: offset %zu length %zu\n",
-              BACKEND->decdata_offset, BACKEND->decdata_length);
+        DEBUGF(infof(data, "schannel: decrypted data added: %zu\n", size));
+        DEBUGF(infof(data,
+                     "schannel: decrypted cached: offset %zu length %zu\n",
+                     BACKEND->decdata_offset, BACKEND->decdata_length));
       }
 
       /* check for remaining encrypted data */
       if(inbuf[3].BufferType == SECBUFFER_EXTRA && inbuf[3].cbBuffer > 0) {
-        infof(data, "schannel: encrypted data length: %lu\n",
-              inbuf[3].cbBuffer);
+        DEBUGF(infof(data, "schannel: encrypted data length: %lu\n",
+                     inbuf[3].cbBuffer));
 
         /* check if the remaining data is less than the total amount
          * and therefore begins after the already processed data
@@ -1704,8 +1799,9 @@ schannel_recv(struct connectdata *conn, int sockindex,
           BACKEND->encdata_offset = inbuf[3].cbBuffer;
         }
 
-        infof(data, "schannel: encrypted data cached: offset %zu length %zu\n",
-              BACKEND->encdata_offset, BACKEND->encdata_length);
+        DEBUGF(infof(data,
+                     "schannel: encrypted cached: offset %zu length %zu\n",
+                     BACKEND->encdata_offset, BACKEND->encdata_length));
       }
       else {
         /* reset encrypted buffer offset, because there is no data remaining */
@@ -1759,22 +1855,25 @@ schannel_recv(struct connectdata *conn, int sockindex,
       goto cleanup;
     }
     else {
+      char buffer[STRERROR_LEN];
       *err = CURLE_RECV_ERROR;
       infof(data, "schannel: failed to read data from server: %s\n",
-            Curl_sspi_strerror(conn, sspi_status));
+            Curl_sspi_strerror(sspi_status, buffer, sizeof(buffer)));
       goto cleanup;
     }
   }
 
-  infof(data, "schannel: encrypted data buffer: offset %zu length %zu\n",
-        BACKEND->encdata_offset, BACKEND->encdata_length);
+  DEBUGF(infof(data,
+               "schannel: encrypted data buffer: offset %zu length %zu\n",
+               BACKEND->encdata_offset, BACKEND->encdata_length));
 
-  infof(data, "schannel: decrypted data buffer: offset %zu length %zu\n",
-        BACKEND->decdata_offset, BACKEND->decdata_length);
+  DEBUGF(infof(data,
+               "schannel: decrypted data buffer: offset %zu length %zu\n",
+               BACKEND->decdata_offset, BACKEND->decdata_length));
 
 cleanup:
   /* Warning- there is no guarantee the encdata state is valid at this point */
-  infof(data, "schannel: schannel_recv cleanup\n");
+  DEBUGF(infof(data, "schannel: schannel_recv cleanup\n"));
 
   /* Error if the connection has closed without a close_notify.
   Behavior here is a matter of debate. We don't want to be vulnerable to a
@@ -1807,10 +1906,10 @@ cleanup:
     memmove(BACKEND->decdata_buffer, BACKEND->decdata_buffer + size,
             BACKEND->decdata_offset - size);
     BACKEND->decdata_offset -= size;
-
-    infof(data, "schannel: decrypted data returned %zu\n", size);
-    infof(data, "schannel: decrypted data buffer: offset %zu length %zu\n",
-          BACKEND->decdata_offset, BACKEND->decdata_length);
+    DEBUGF(infof(data, "schannel: decrypted data returned %zu\n", size));
+    DEBUGF(infof(data,
+                 "schannel: decrypted data buffer: offset %zu length %zu\n",
+                 BACKEND->decdata_offset, BACKEND->decdata_length));
     *err = CURLE_OK;
     return (ssize_t)size;
   }
@@ -1888,6 +1987,8 @@ static int Curl_schannel_shutdown(struct connectdata *conn, int sockindex)
   char * const hostname = SSL_IS_PROXY() ? conn->http_proxy.host.name :
     conn->host.name;
 
+  DEBUGASSERT(data);
+
   infof(data, "schannel: shutting down SSL/TLS connection with %s port %hu\n",
         hostname, conn->remote_port);
 
@@ -1907,9 +2008,11 @@ static int Curl_schannel_shutdown(struct connectdata *conn, int sockindex)
     sspi_status = s_pSecFn->ApplyControlToken(&BACKEND->ctxt->ctxt_handle,
                                               &BuffDesc);
 
-    if(sspi_status != SEC_E_OK)
+    if(sspi_status != SEC_E_OK) {
+      char buffer[STRERROR_LEN];
       failf(data, "schannel: ApplyControlToken failure: %s",
-            Curl_sspi_strerror(conn, sspi_status));
+            Curl_sspi_strerror(sspi_status, buffer, sizeof(buffer)));
+    }
 
     host_name = Curl_convert_UTF8_to_tchar(hostname);
     if(!host_name)
@@ -1951,13 +2054,18 @@ static int Curl_schannel_shutdown(struct connectdata *conn, int sockindex)
 
   /* free SSPI Schannel API security context handle */
   if(BACKEND->ctxt) {
-    infof(data, "schannel: clear security context handle\n");
+    DEBUGF(infof(data, "schannel: clear security context handle\n"));
     s_pSecFn->DeleteSecurityContext(&BACKEND->ctxt->ctxt_handle);
     Curl_safefree(BACKEND->ctxt);
   }
 
   /* free SSPI Schannel API credential handle */
   if(BACKEND->cred) {
+    /*
+     * When this function is called from Curl_schannel_close() the connection
+     * might not have an associated transfer so the check for conn->data is
+     * necessary.
+     */
     Curl_ssl_sessionid_lock(conn);
     Curl_schannel_session_free(BACKEND->cred);
     Curl_ssl_sessionid_unlock(conn);
@@ -1994,7 +2102,7 @@ static void Curl_schannel_cleanup(void)
 
 static size_t Curl_schannel_version(char *buffer, size_t size)
 {
-  size = snprintf(buffer, size, "WinSSL");
+  size = msnprintf(buffer, size, "Schannel");
 
   return size;
 }
@@ -2022,14 +2130,9 @@ static CURLcode Curl_schannel_random(struct Curl_easy *data UNUSED_PARAM,
 static CURLcode pkp_pin_peer_pubkey(struct connectdata *conn, int sockindex,
                                     const char *pinnedpubkey)
 {
-  SECURITY_STATUS status;
   struct Curl_easy *data = conn->data;
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   CERT_CONTEXT *pCertContextServer = NULL;
-  const char *x509_der;
-  DWORD x509_der_len;
-  curl_X509certificate x509_parsed;
-  curl_asn1Element *pubkey;
 
   /* Result is returned to caller */
   CURLcode result = CURLE_SSL_PINNEDPUBKEYNOTMATCH;
@@ -2039,13 +2142,21 @@ static CURLcode pkp_pin_peer_pubkey(struct connectdata *conn, int sockindex,
     return CURLE_OK;
 
   do {
-    status = s_pSecFn->QueryContextAttributes(&BACKEND->ctxt->ctxt_handle,
-                                              SECPKG_ATTR_REMOTE_CERT_CONTEXT,
-                                              &pCertContextServer);
+    SECURITY_STATUS sspi_status;
+    const char *x509_der;
+    DWORD x509_der_len;
+    curl_X509certificate x509_parsed;
+    curl_asn1Element *pubkey;
 
-    if((status != SEC_E_OK) || (pCertContextServer == NULL)) {
+    sspi_status =
+      s_pSecFn->QueryContextAttributes(&BACKEND->ctxt->ctxt_handle,
+                                       SECPKG_ATTR_REMOTE_CERT_CONTEXT,
+                                       &pCertContextServer);
+
+    if((sspi_status != SEC_E_OK) || (pCertContextServer == NULL)) {
+      char buffer[STRERROR_LEN];
       failf(data, "schannel: Failed to read remote certificate context: %s",
-            Curl_sspi_strerror(conn, status));
+            Curl_sspi_strerror(sspi_status, buffer, sizeof(buffer)));
       break; /* failed */
     }
 
@@ -2082,11 +2193,11 @@ static CURLcode pkp_pin_peer_pubkey(struct connectdata *conn, int sockindex,
 }
 
 static void Curl_schannel_checksum(const unsigned char *input,
-                      size_t inputlen,
-                      unsigned char *checksum,
-                      size_t checksumlen,
-                      DWORD provType,
-                      const unsigned int algId)
+                                   size_t inputlen,
+                                   unsigned char *checksum,
+                                   size_t checksumlen,
+                                   DWORD provType,
+                                   const unsigned int algId)
 {
   HCRYPTPROV hProv = 0;
   HCRYPTHASH hHash = 0;
@@ -2136,9 +2247,9 @@ static CURLcode Curl_schannel_md5sum(unsigned char *input,
                                      unsigned char *md5sum,
                                      size_t md5len)
 {
-    Curl_schannel_checksum(input, inputlen, md5sum, md5len,
-                           PROV_RSA_FULL, CALG_MD5);
-    return CURLE_OK;
+  Curl_schannel_checksum(input, inputlen, md5sum, md5len,
+                         PROV_RSA_FULL, CALG_MD5);
+  return CURLE_OK;
 }
 
 static CURLcode Curl_schannel_sha256sum(const unsigned char *input,
@@ -2146,9 +2257,9 @@ static CURLcode Curl_schannel_sha256sum(const unsigned char *input,
                                     unsigned char *sha256sum,
                                     size_t sha256len)
 {
-    Curl_schannel_checksum(input, inputlen, sha256sum, sha256len,
-                           PROV_RSA_AES, CALG_SHA_256);
-    return CURLE_OK;
+  Curl_schannel_checksum(input, inputlen, sha256sum, sha256len,
+                         PROV_RSA_AES, CALG_SHA_256);
+  return CURLE_OK;
 }
 
 static void *Curl_schannel_get_internals(struct ssl_connect_data *connssl,
diff --git a/Utilities/cmcurl/lib/vtls/schannel.h b/Utilities/cmcurl/lib/vtls/schannel.h
index e491bd4..ee8d7d4 100644
--- a/Utilities/cmcurl/lib/vtls/schannel.h
+++ b/Utilities/cmcurl/lib/vtls/schannel.h
@@ -8,7 +8,7 @@
  *                             \___|\___/|_| \_\_____|
  *
  * Copyright (C) 2012, Marc Hoersken, <info@marc-hoersken.de>, et al.
- * Copyright (C) 2012 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 2012 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -53,7 +53,7 @@
 
 extern const struct Curl_ssl Curl_ssl_schannel;
 
-CURLcode verify_certificate(struct connectdata *conn, int sockindex);
+CURLcode Curl_verify_certificate(struct connectdata *conn, int sockindex);
 
 /* structs to expose only in schannel.c and schannel_verify.c */
 #ifdef EXPOSE_SCHANNEL_INTERNAL_STRUCTS
diff --git a/Utilities/cmcurl/lib/vtls/schannel_verify.c b/Utilities/cmcurl/lib/vtls/schannel_verify.c
index 2516f56..5a09e96 100644
--- a/Utilities/cmcurl/lib/vtls/schannel_verify.c
+++ b/Utilities/cmcurl/lib/vtls/schannel_verify.c
@@ -7,7 +7,7 @@
  *
  * Copyright (C) 2012 - 2016, Marc Hoersken, <info@marc-hoersken.de>
  * Copyright (C) 2012, Mark Salisbury, <mark.salisbury@hp.com>
- * Copyright (C) 2012 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 2012 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -23,7 +23,7 @@
  ***************************************************************************/
 
 /*
- * Source file for SChannel-specific certificate verification. This code should
+ * Source file for Schannel-specific certificate verification. This code should
  * only be invoked by code in schannel.c.
  */
 
@@ -87,18 +87,19 @@ static CURLcode add_certs_to_store(HCERTSTORE trust_store,
   LARGE_INTEGER file_size;
   char *ca_file_buffer = NULL;
   char *current_ca_file_ptr = NULL;
-  const TCHAR *ca_file_tstr = NULL;
+  TCHAR *ca_file_tstr = NULL;
   size_t ca_file_bufsize = 0;
   DWORD total_bytes_read = 0;
   bool more_certs = 0;
   int num_certs = 0;
   size_t END_CERT_LEN;
 
-  ca_file_tstr = Curl_convert_UTF8_to_tchar(ca_file);
+  ca_file_tstr = Curl_convert_UTF8_to_tchar((char *)ca_file);
   if(!ca_file_tstr) {
+    char buffer[STRERROR_LEN];
     failf(data,
           "schannel: invalid path name for CA file '%s': %s",
-          ca_file, Curl_strerror(conn, GetLastError()));
+          ca_file, Curl_strerror(GetLastError(), buffer, sizeof(buffer)));
     result = CURLE_SSL_CACERT_BADFILE;
     goto cleanup;
   }
@@ -116,17 +117,19 @@ static CURLcode add_certs_to_store(HCERTSTORE trust_store,
                               FILE_ATTRIBUTE_NORMAL,
                               NULL);
   if(ca_file_handle == INVALID_HANDLE_VALUE) {
+    char buffer[STRERROR_LEN];
     failf(data,
           "schannel: failed to open CA file '%s': %s",
-          ca_file, Curl_strerror(conn, GetLastError()));
+          ca_file, Curl_strerror(GetLastError(), buffer, sizeof(buffer)));
     result = CURLE_SSL_CACERT_BADFILE;
     goto cleanup;
   }
 
   if(!GetFileSizeEx(ca_file_handle, &file_size)) {
+    char buffer[STRERROR_LEN];
     failf(data,
           "schannel: failed to determine size of CA file '%s': %s",
-          ca_file, Curl_strerror(conn, GetLastError()));
+          ca_file, Curl_strerror(GetLastError(), buffer, sizeof(buffer)));
     result = CURLE_SSL_CACERT_BADFILE;
     goto cleanup;
   }
@@ -153,10 +156,10 @@ static CURLcode add_certs_to_store(HCERTSTORE trust_store,
 
     if(!ReadFile(ca_file_handle, ca_file_buffer + total_bytes_read,
                  bytes_to_read, &bytes_read, NULL)) {
-
+      char buffer[STRERROR_LEN];
       failf(data,
             "schannel: failed to read from CA file '%s': %s",
-            ca_file, Curl_strerror(conn, GetLastError()));
+            ca_file, Curl_strerror(GetLastError(), buffer, sizeof(buffer)));
       result = CURLE_SSL_CACERT_BADFILE;
       goto cleanup;
     }
@@ -215,11 +218,12 @@ static CURLcode add_certs_to_store(HCERTSTORE trust_store,
                              NULL,
                              NULL,
                              (const void **)&cert_context)) {
-
+          char buffer[STRERROR_LEN];
           failf(data,
                 "schannel: failed to extract certificate from CA file "
                 "'%s': %s",
-                ca_file, Curl_strerror(conn, GetLastError()));
+                ca_file,
+                Curl_strerror(GetLastError(), buffer, sizeof(buffer)));
           result = CURLE_SSL_CACERT_BADFILE;
           more_certs = 0;
         }
@@ -243,10 +247,12 @@ static CURLcode add_certs_to_store(HCERTSTORE trust_store,
                                                NULL);
             CertFreeCertificateContext(cert_context);
             if(!add_cert_result) {
+              char buffer[STRERROR_LEN];
               failf(data,
                     "schannel: failed to add certificate from CA file '%s' "
                     "to certificate store: %s",
-                    ca_file, Curl_strerror(conn, GetLastError()));
+                    ca_file,
+                    Curl_strerror(GetLastError(), buffer, sizeof(buffer)));
               result = CURLE_SSL_CACERT_BADFILE;
               more_certs = 0;
             }
@@ -406,9 +412,9 @@ cleanup:
   return result;
 }
 
-CURLcode verify_certificate(struct connectdata *conn, int sockindex)
+CURLcode Curl_verify_certificate(struct connectdata *conn, int sockindex)
 {
-  SECURITY_STATUS status;
+  SECURITY_STATUS sspi_status;
   struct Curl_easy *data = conn->data;
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   CURLcode result = CURLE_OK;
@@ -420,13 +426,15 @@ CURLcode verify_certificate(struct connectdata *conn, int sockindex)
     conn->http_proxy.host.name :
     conn->host.name;
 
-  status = s_pSecFn->QueryContextAttributes(&BACKEND->ctxt->ctxt_handle,
-                                            SECPKG_ATTR_REMOTE_CERT_CONTEXT,
-                                            &pCertContextServer);
+  sspi_status =
+    s_pSecFn->QueryContextAttributes(&BACKEND->ctxt->ctxt_handle,
+                                     SECPKG_ATTR_REMOTE_CERT_CONTEXT,
+                                     &pCertContextServer);
 
-  if((status != SEC_E_OK) || (pCertContextServer == NULL)) {
+  if((sspi_status != SEC_E_OK) || (pCertContextServer == NULL)) {
+    char buffer[STRERROR_LEN];
     failf(data, "schannel: Failed to read remote certificate context: %s",
-          Curl_sspi_strerror(conn, status));
+          Curl_sspi_strerror(sspi_status, buffer, sizeof(buffer)));
     result = CURLE_PEER_FAILED_VERIFICATION;
   }
 
@@ -450,8 +458,9 @@ CURLcode verify_certificate(struct connectdata *conn, int sockindex)
                                   CERT_STORE_CREATE_NEW_FLAG,
                                   NULL);
       if(!trust_store) {
+        char buffer[STRERROR_LEN];
         failf(data, "schannel: failed to create certificate store: %s",
-              Curl_strerror(conn, GetLastError()));
+              Curl_strerror(GetLastError(), buffer, sizeof(buffer)));
         result = CURLE_SSL_CACERT_BADFILE;
       }
       else {
@@ -477,9 +486,10 @@ CURLcode verify_certificate(struct connectdata *conn, int sockindex)
         CertCreateCertificateChainEngine(
           (CERT_CHAIN_ENGINE_CONFIG *)&engine_config, &cert_chain_engine);
       if(!create_engine_result) {
+        char buffer[STRERROR_LEN];
         failf(data,
               "schannel: failed to create certificate chain engine: %s",
-              Curl_strerror(conn, GetLastError()));
+              Curl_strerror(GetLastError(), buffer, sizeof(buffer)));
         result = CURLE_SSL_CACERT_BADFILE;
       }
     }
@@ -500,8 +510,9 @@ CURLcode verify_certificate(struct connectdata *conn, int sockindex)
                                  CERT_CHAIN_REVOCATION_CHECK_CHAIN),
                                 NULL,
                                 &pChainContext)) {
+      char buffer[STRERROR_LEN];
       failf(data, "schannel: CertGetCertificateChain failed: %s",
-            Curl_sspi_strerror(conn, GetLastError()));
+            Curl_strerror(GetLastError(), buffer, sizeof(buffer)));
       pChainContext = NULL;
       result = CURLE_PEER_FAILED_VERIFICATION;
     }
diff --git a/Utilities/cmcurl/lib/vtls/darwinssl.c b/Utilities/cmcurl/lib/vtls/sectransp.c
index e8116b8..2fdf662 100644
--- a/Utilities/cmcurl/lib/vtls/darwinssl.c
+++ b/Utilities/cmcurl/lib/vtls/sectransp.c
@@ -6,7 +6,7 @@
  *                             \___|\___/|_| \_\_____|
  *
  * Copyright (C) 2012 - 2017, Nick Zitzmann, <nickzman@gmail.com>.
- * Copyright (C) 2012 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 2012 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -31,8 +31,9 @@
 #include "urldata.h" /* for the Curl_easy definition */
 #include "curl_base64.h"
 #include "strtok.h"
+#include "multiif.h"
 
-#ifdef USE_DARWINSSL
+#ifdef USE_SECTRANSP
 
 #ifdef __clang__
 #pragma clang diagnostic push
@@ -59,7 +60,7 @@
 #if (TARGET_OS_MAC && !(TARGET_OS_EMBEDDED || TARGET_OS_IPHONE))
 
 #if MAC_OS_X_VERSION_MAX_ALLOWED < 1050
-#error "The darwinssl back-end requires Leopard or later."
+#error "The Secure Transport back-end requires Leopard or later."
 #endif /* MAC_OS_X_VERSION_MAX_ALLOWED < 1050 */
 
 #define CURL_BUILD_IOS 0
@@ -105,7 +106,7 @@
 #define CURL_SUPPORT_MAC_10_9 0
 
 #else
-#error "The darwinssl back-end requires iOS or OS X."
+#error "The Secure Transport back-end requires iOS or macOS."
 #endif /* (TARGET_OS_MAC && !(TARGET_OS_EMBEDDED || TARGET_OS_IPHONE)) */
 
 #if CURL_BUILD_MAC
@@ -118,7 +119,7 @@
 #include "connect.h"
 #include "select.h"
 #include "vtls.h"
-#include "darwinssl.h"
+#include "sectransp.h"
 #include "curl_printf.h"
 #include "strdup.h"
 
@@ -144,20 +145,20 @@ struct ssl_backend_data {
 /* version 1 supports macOS 10.12+ and iOS 10+ */
 #if ((TARGET_OS_IPHONE && __IPHONE_OS_VERSION_MIN_REQUIRED >= 100000) || \
     (!TARGET_OS_IPHONE && __MAC_OS_X_VERSION_MIN_REQUIRED  >= 101200))
-#define DARWIN_SSL_PINNEDPUBKEY_V1 1
+#define SECTRANSP_PINNEDPUBKEY_V1 1
 #endif
 
 /* version 2 supports MacOSX 10.7+ */
 #if (!TARGET_OS_IPHONE && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070)
-#define DARWIN_SSL_PINNEDPUBKEY_V2 1
+#define SECTRANSP_PINNEDPUBKEY_V2 1
 #endif
 
-#if defined(DARWIN_SSL_PINNEDPUBKEY_V1) || defined(DARWIN_SSL_PINNEDPUBKEY_V2)
+#if defined(SECTRANSP_PINNEDPUBKEY_V1) || defined(SECTRANSP_PINNEDPUBKEY_V2)
 /* this backend supports CURLOPT_PINNEDPUBLICKEY */
-#define DARWIN_SSL_PINNEDPUBKEY 1
-#endif /* DARWIN_SSL_PINNEDPUBKEY */
+#define SECTRANSP_PINNEDPUBKEY 1
+#endif /* SECTRANSP_PINNEDPUBKEY */
 
-#ifdef DARWIN_SSL_PINNEDPUBKEY
+#ifdef SECTRANSP_PINNEDPUBKEY
 /* both new and old APIs return rsa keys missing the spki header (not DER) */
 static const unsigned char rsa4096SpkiHeader[] = {
                                        0x30, 0x82, 0x02, 0x22, 0x30, 0x0d,
@@ -170,7 +171,7 @@ static const unsigned char rsa2048SpkiHeader[] = {
                                        0x06, 0x09, 0x2a, 0x86, 0x48, 0x86,
                                        0xf7, 0x0d, 0x01, 0x01, 0x01, 0x05,
                                        0x00, 0x03, 0x82, 0x01, 0x0f, 0x00};
-#ifdef DARWIN_SSL_PINNEDPUBKEY_V1
+#ifdef SECTRANSP_PINNEDPUBKEY_V1
 /* the *new* version doesn't return DER encoded ecdsa certs like the old... */
 static const unsigned char ecDsaSecp256r1SpkiHeader[] = {
                                        0x30, 0x59, 0x30, 0x13, 0x06, 0x07,
@@ -184,8 +185,8 @@ static const unsigned char ecDsaSecp384r1SpkiHeader[] = {
                                        0x2a, 0x86, 0x48, 0xce, 0x3d, 0x02,
                                        0x01, 0x06, 0x05, 0x2b, 0x81, 0x04,
                                        0x00, 0x22, 0x03, 0x62, 0x00};
-#endif /* DARWIN_SSL_PINNEDPUBKEY_V1 */
-#endif /* DARWIN_SSL_PINNEDPUBKEY */
+#endif /* SECTRANSP_PINNEDPUBKEY_V1 */
+#endif /* SECTRANSP_PINNEDPUBKEY */
 
 /* The following two functions were ripped from Apple sample code,
  * with some modifications: */
@@ -950,7 +951,7 @@ static CURLcode CopyCertSubject(struct Curl_easy *data,
 
   if(!c) {
     failf(data, "SSL: invalid CA certificate subject");
-    return CURLE_SSL_CACERT;
+    return CURLE_PEER_FAILED_VERIFICATION;
   }
 
   /* If the subject is already available as UTF-8 encoded (ie 'direct') then
@@ -970,7 +971,7 @@ static CURLcode CopyCertSubject(struct Curl_easy *data,
       if(!CFStringGetCString(c, cbuf, cbuf_size,
                              kCFStringEncodingUTF8)) {
         failf(data, "SSL: invalid CA certificate subject");
-        result = CURLE_SSL_CACERT;
+        result = CURLE_PEER_FAILED_VERIFICATION;
       }
       else
         /* pass back the buffer */
@@ -1242,7 +1243,7 @@ CF_INLINE bool is_file(const char *filename)
 }
 
 #if CURL_BUILD_MAC_10_8 || CURL_BUILD_IOS
-static CURLcode darwinssl_version_from_curl(SSLProtocol *darwinver,
+static CURLcode sectransp_version_from_curl(SSLProtocol *darwinver,
                                             long ssl_version)
 {
   switch(ssl_version) {
@@ -1298,7 +1299,6 @@ set_ssl_version_min_max(struct connectdata *conn, int sockindex)
     case CURL_SSLVERSION_DEFAULT:
     case CURL_SSLVERSION_TLSv1:
       ssl_version = CURL_SSLVERSION_TLSv1_0;
-      ssl_version_max = max_supported_version_by_os;
       break;
   }
 
@@ -1313,13 +1313,13 @@ set_ssl_version_min_max(struct connectdata *conn, int sockindex)
   if(SSLSetProtocolVersionMax != NULL) {
     SSLProtocol darwin_ver_min = kTLSProtocol1;
     SSLProtocol darwin_ver_max = kTLSProtocol1;
-    CURLcode result = darwinssl_version_from_curl(&darwin_ver_min,
+    CURLcode result = sectransp_version_from_curl(&darwin_ver_min,
                                                   ssl_version);
     if(result) {
       failf(data, "unsupported min version passed via CURLOPT_SSLVERSION");
       return result;
     }
-    result = darwinssl_version_from_curl(&darwin_ver_max,
+    result = sectransp_version_from_curl(&darwin_ver_max,
                                          ssl_version_max >> 16);
     if(result) {
       failf(data, "unsupported max version passed via CURLOPT_SSLVERSION");
@@ -1362,12 +1362,12 @@ set_ssl_version_min_max(struct connectdata *conn, int sockindex)
 #endif  /* CURL_SUPPORT_MAC_10_8 */
   }
 #endif  /* CURL_BUILD_MAC_10_8 || CURL_BUILD_IOS */
-  failf(data, "DarwinSSL: cannot set SSL protocol");
+  failf(data, "Secure Transport: cannot set SSL protocol");
   return CURLE_SSL_CONNECT_ERROR;
 }
 
 
-static CURLcode darwinssl_connect_step1(struct connectdata *conn,
+static CURLcode sectransp_connect_step1(struct connectdata *conn,
                                         int sockindex)
 {
   struct Curl_easy *data = conn->data;
@@ -1430,7 +1430,6 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
 #if CURL_BUILD_MAC_10_8 || CURL_BUILD_IOS
   if(SSLSetProtocolVersionMax != NULL) {
     switch(conn->ssl_config.version) {
-    case CURL_SSLVERSION_DEFAULT:
     case CURL_SSLVERSION_TLSv1:
       (void)SSLSetProtocolVersionMin(BACKEND->ssl_ctx, kTLSProtocol1);
 #if (CURL_BUILD_MAC_10_13 || CURL_BUILD_IOS_11) && HAVE_BUILTIN_AVAILABLE == 1
@@ -1445,6 +1444,7 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
 #endif /* (CURL_BUILD_MAC_10_13 || CURL_BUILD_IOS_11) &&
           HAVE_BUILTIN_AVAILABLE == 1 */
       break;
+    case CURL_SSLVERSION_DEFAULT:
     case CURL_SSLVERSION_TLSv1_0:
     case CURL_SSLVERSION_TLSv1_1:
     case CURL_SSLVERSION_TLSv1_2:
@@ -1578,7 +1578,7 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
 
 #if (CURL_BUILD_MAC_10_13 || CURL_BUILD_IOS_11) && HAVE_BUILTIN_AVAILABLE == 1
   if(conn->bits.tls_enable_alpn) {
-    if(__builtin_available(macOS 10.13.4, iOS 11, *)) {
+    if(__builtin_available(macOS 10.13.4, iOS 11, tvOS 11, *)) {
       CFMutableArrayRef alpnArr = CFArrayCreateMutable(NULL, 0,
                                                        &kCFTypeArrayCallBacks);
 
@@ -1649,7 +1649,7 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
         }
 
         CFRelease(cert);
-        if(result == CURLE_SSL_CACERT)
+        if(result == CURLE_PEER_FAILED_VERIFICATION)
           return CURLE_SSL_CERTPROBLEM;
         if(result)
           return result;
@@ -1903,7 +1903,6 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
   /* We want to enable 1/n-1 when using a CBC cipher unless the user
      specifically doesn't want us doing that: */
   if(SSLSetSessionOption != NULL) {
-    /* TODO s/data->set.ssl.enable_beast/SSL_SET_OPTION(enable_beast)/g */
     SSLSetSessionOption(BACKEND->ssl_ctx, kSSLSessionOptionSendOneByteRecord,
                       !data->set.ssl.enable_beast);
     SSLSetSessionOption(BACKEND->ssl_ctx, kSSLSessionOptionFalseStart,
@@ -2235,7 +2234,7 @@ static int verify_cert(const char *cafile, struct Curl_easy *data,
   }
 }
 
-#ifdef DARWIN_SSL_PINNEDPUBKEY
+#ifdef SECTRANSP_PINNEDPUBKEY
 static CURLcode pkp_pin_peer_pubkey(struct Curl_easy *data,
                                     SSLContextRef ctx,
                                     const char *pinnedpubkey)
@@ -2267,14 +2266,14 @@ static CURLcode pkp_pin_peer_pubkey(struct Curl_easy *data,
     if(keyRef == NULL)
       break;
 
-#ifdef DARWIN_SSL_PINNEDPUBKEY_V1
+#ifdef SECTRANSP_PINNEDPUBKEY_V1
 
     publicKeyBits = SecKeyCopyExternalRepresentation(keyRef, NULL);
     CFRelease(keyRef);
     if(publicKeyBits == NULL)
       break;
 
-#elif DARWIN_SSL_PINNEDPUBKEY_V2
+#elif SECTRANSP_PINNEDPUBKEY_V2
 
     OSStatus success = SecItemExport(keyRef, kSecFormatOpenSSL, 0, NULL,
                                      &publicKeyBits);
@@ -2282,7 +2281,7 @@ static CURLcode pkp_pin_peer_pubkey(struct Curl_easy *data,
     if(success != errSecSuccess || publicKeyBits == NULL)
       break;
 
-#endif /* DARWIN_SSL_PINNEDPUBKEY_V2 */
+#endif /* SECTRANSP_PINNEDPUBKEY_V2 */
 
     pubkeylen = CFDataGetLength(publicKeyBits);
     pubkey = (unsigned char *)CFDataGetBytePtr(publicKeyBits);
@@ -2296,7 +2295,7 @@ static CURLcode pkp_pin_peer_pubkey(struct Curl_easy *data,
         /* 2048 bit RSA pubkeylen == 270 */
         spkiHeader = rsa2048SpkiHeader;
         break;
-#ifdef DARWIN_SSL_PINNEDPUBKEY_V1
+#ifdef SECTRANSP_PINNEDPUBKEY_V1
       case 65:
         /* ecDSA secp256r1 pubkeylen == 65 */
         spkiHeader = ecDsaSecp256r1SpkiHeader;
@@ -2309,7 +2308,7 @@ static CURLcode pkp_pin_peer_pubkey(struct Curl_easy *data,
         break;
       default:
         infof(data, "SSL: unhandled public key length: %d\n", pubkeylen);
-#elif DARWIN_SSL_PINNEDPUBKEY_V2
+#elif SECTRANSP_PINNEDPUBKEY_V2
       default:
         /* ecDSA secp256r1 pubkeylen == 91 header already included?
          * ecDSA secp384r1 header already included too
@@ -2317,7 +2316,7 @@ static CURLcode pkp_pin_peer_pubkey(struct Curl_easy *data,
          */
         result = Curl_pin_peer_pubkey(data, pinnedpubkey, pubkey,
                                     pubkeylen);
-#endif /* DARWIN_SSL_PINNEDPUBKEY_V2 */
+#endif /* SECTRANSP_PINNEDPUBKEY_V2 */
         continue; /* break from loop */
     }
 
@@ -2340,10 +2339,10 @@ static CURLcode pkp_pin_peer_pubkey(struct Curl_easy *data,
 
   return result;
 }
-#endif /* DARWIN_SSL_PINNEDPUBKEY */
+#endif /* SECTRANSP_PINNEDPUBKEY */
 
 static CURLcode
-darwinssl_connect_step2(struct connectdata *conn, int sockindex)
+sectransp_connect_step2(struct connectdata *conn, int sockindex)
 {
   struct Curl_easy *data = conn->data;
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
@@ -2377,7 +2376,7 @@ darwinssl_connect_step2(struct connectdata *conn, int sockindex)
             return res;
         }
         /* the documentation says we need to call SSLHandshake() again */
-        return darwinssl_connect_step2(conn, sockindex);
+        return sectransp_connect_step2(conn, sockindex);
 
       /* Problem with encrypt / decrypt */
       case errSSLPeerDecodeError:
@@ -2429,37 +2428,37 @@ darwinssl_connect_step2(struct connectdata *conn, int sockindex)
       /* These are all certificate problems with the server: */
       case errSSLXCertChainInvalid:
         failf(data, "SSL certificate problem: Invalid certificate chain");
-        return CURLE_SSL_CACERT;
+        return CURLE_PEER_FAILED_VERIFICATION;
       case errSSLUnknownRootCert:
         failf(data, "SSL certificate problem: Untrusted root certificate");
-        return CURLE_SSL_CACERT;
+        return CURLE_PEER_FAILED_VERIFICATION;
       case errSSLNoRootCert:
         failf(data, "SSL certificate problem: No root certificate");
-        return CURLE_SSL_CACERT;
+        return CURLE_PEER_FAILED_VERIFICATION;
       case errSSLCertNotYetValid:
         failf(data, "SSL certificate problem: The certificate chain had a "
                     "certificate that is not yet valid");
-        return CURLE_SSL_CACERT;
+        return CURLE_PEER_FAILED_VERIFICATION;
       case errSSLCertExpired:
       case errSSLPeerCertExpired:
         failf(data, "SSL certificate problem: Certificate chain had an "
               "expired certificate");
-        return CURLE_SSL_CACERT;
+        return CURLE_PEER_FAILED_VERIFICATION;
       case errSSLBadCert:
       case errSSLPeerBadCert:
         failf(data, "SSL certificate problem: Couldn't understand the server "
               "certificate format");
-        return CURLE_SSL_CACERT;
+        return CURLE_PEER_FAILED_VERIFICATION;
       case errSSLPeerUnsupportedCert:
         failf(data, "SSL certificate problem: An unsupported certificate "
                     "format was encountered");
-        return CURLE_SSL_CACERT;
+        return CURLE_PEER_FAILED_VERIFICATION;
       case errSSLPeerCertRevoked:
         failf(data, "SSL certificate problem: The certificate was revoked");
-        return CURLE_SSL_CACERT;
+        return CURLE_PEER_FAILED_VERIFICATION;
       case errSSLPeerCertUnknown:
         failf(data, "SSL certificate problem: The certificate is unknown");
-        return CURLE_SSL_CACERT;
+        return CURLE_PEER_FAILED_VERIFICATION;
 
       /* These are all certificate problems with the client: */
       case errSecAuthFailed:
@@ -2579,7 +2578,7 @@ darwinssl_connect_step2(struct connectdata *conn, int sockindex)
     /* we have been connected fine, we're not waiting for anything else. */
     connssl->connecting_state = ssl_connect_3;
 
-#ifdef DARWIN_SSL_PINNEDPUBKEY
+#ifdef SECTRANSP_PINNEDPUBKEY
     if(data->set.str[STRING_SSL_PINNEDPUBLICKEY_ORIG]) {
       CURLcode result = pkp_pin_peer_pubkey(data, BACKEND->ssl_ctx,
                             data->set.str[STRING_SSL_PINNEDPUBLICKEY_ORIG]);
@@ -2588,7 +2587,7 @@ darwinssl_connect_step2(struct connectdata *conn, int sockindex)
         return result;
       }
     }
-#endif /* DARWIN_SSL_PINNEDPUBKEY */
+#endif /* SECTRANSP_PINNEDPUBKEY */
 
     /* Informational message */
     (void)SSLGetNegotiatedCipher(BACKEND->ssl_ctx, &cipher);
@@ -2629,7 +2628,7 @@ darwinssl_connect_step2(struct connectdata *conn, int sockindex)
 
 #if(CURL_BUILD_MAC_10_13 || CURL_BUILD_IOS_11) && HAVE_BUILTIN_AVAILABLE == 1
     if(conn->bits.tls_enable_alpn) {
-      if(__builtin_available(macOS 10.13.4, iOS 11, *)) {
+      if(__builtin_available(macOS 10.13.4, iOS 11, tvOS 11, *)) {
         CFArrayRef alpnArr = NULL;
         CFStringRef chosenProtocol = NULL;
         err = SSLCopyALPNProtocols(BACKEND->ssl_ctx, &alpnArr);
@@ -2652,6 +2651,9 @@ darwinssl_connect_step2(struct connectdata *conn, int sockindex)
         else
           infof(data, "ALPN, server did not agree to a protocol\n");
 
+        Curl_multiuse_state(conn, conn->negnpn == CURL_HTTP_VERSION_2 ?
+                            BUNDLE_MULTIPLEX : BUNDLE_NO_MULTIUSE);
+
         /* chosenProtocol is a reference to the string within alpnArr
            and doesn't need to be freed separately */
         if(alpnArr)
@@ -2772,7 +2774,7 @@ show_verbose_server_cert(struct connectdata *conn,
 #endif /* !CURL_DISABLE_VERBOSE_STRINGS */
 
 static CURLcode
-darwinssl_connect_step3(struct connectdata *conn,
+sectransp_connect_step3(struct connectdata *conn,
                         int sockindex)
 {
   struct Curl_easy *data = conn->data;
@@ -2790,11 +2792,11 @@ darwinssl_connect_step3(struct connectdata *conn,
   return CURLE_OK;
 }
 
-static Curl_recv darwinssl_recv;
-static Curl_send darwinssl_send;
+static Curl_recv sectransp_recv;
+static Curl_send sectransp_send;
 
 static CURLcode
-darwinssl_connect_common(struct connectdata *conn,
+sectransp_connect_common(struct connectdata *conn,
                          int sockindex,
                          bool nonblocking,
                          bool *done)
@@ -2822,7 +2824,7 @@ darwinssl_connect_common(struct connectdata *conn,
       return CURLE_OPERATION_TIMEDOUT;
     }
 
-    result = darwinssl_connect_step1(conn, sockindex);
+    result = sectransp_connect_step1(conn, sockindex);
     if(result)
       return result;
   }
@@ -2876,7 +2878,7 @@ darwinssl_connect_common(struct connectdata *conn,
      * before step2 has completed while ensuring that a client using select()
      * or epoll() will always have a valid fdset to wait on.
      */
-    result = darwinssl_connect_step2(conn, sockindex);
+    result = sectransp_connect_step2(conn, sockindex);
     if(result || (nonblocking &&
                   (ssl_connect_2 == connssl->connecting_state ||
                    ssl_connect_2_reading == connssl->connecting_state ||
@@ -2887,15 +2889,15 @@ darwinssl_connect_common(struct connectdata *conn,
 
 
   if(ssl_connect_3 == connssl->connecting_state) {
-    result = darwinssl_connect_step3(conn, sockindex);
+    result = sectransp_connect_step3(conn, sockindex);
     if(result)
       return result;
   }
 
   if(ssl_connect_done == connssl->connecting_state) {
     connssl->state = ssl_connection_complete;
-    conn->recv[sockindex] = darwinssl_recv;
-    conn->send[sockindex] = darwinssl_send;
+    conn->recv[sockindex] = sectransp_recv;
+    conn->send[sockindex] = sectransp_send;
     *done = TRUE;
   }
   else
@@ -2907,18 +2909,18 @@ darwinssl_connect_common(struct connectdata *conn,
   return CURLE_OK;
 }
 
-static CURLcode Curl_darwinssl_connect_nonblocking(struct connectdata *conn,
+static CURLcode Curl_sectransp_connect_nonblocking(struct connectdata *conn,
                                                    int sockindex, bool *done)
 {
-  return darwinssl_connect_common(conn, sockindex, TRUE, done);
+  return sectransp_connect_common(conn, sockindex, TRUE, done);
 }
 
-static CURLcode Curl_darwinssl_connect(struct connectdata *conn, int sockindex)
+static CURLcode Curl_sectransp_connect(struct connectdata *conn, int sockindex)
 {
   CURLcode result;
   bool done = FALSE;
 
-  result = darwinssl_connect_common(conn, sockindex, FALSE, &done);
+  result = sectransp_connect_common(conn, sockindex, FALSE, &done);
 
   if(result)
     return result;
@@ -2928,7 +2930,7 @@ static CURLcode Curl_darwinssl_connect(struct connectdata *conn, int sockindex)
   return CURLE_OK;
 }
 
-static void Curl_darwinssl_close(struct connectdata *conn, int sockindex)
+static void Curl_sectransp_close(struct connectdata *conn, int sockindex)
 {
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
 
@@ -2949,7 +2951,7 @@ static void Curl_darwinssl_close(struct connectdata *conn, int sockindex)
   BACKEND->ssl_sockfd = 0;
 }
 
-static int Curl_darwinssl_shutdown(struct connectdata *conn, int sockindex)
+static int Curl_sectransp_shutdown(struct connectdata *conn, int sockindex)
 {
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   struct Curl_easy *data = conn->data;
@@ -2961,10 +2963,12 @@ static int Curl_darwinssl_shutdown(struct connectdata *conn, int sockindex)
   if(!BACKEND->ssl_ctx)
     return 0;
 
+#ifndef CURL_DISABLE_FTP
   if(data->set.ftp_ccc != CURLFTPSSL_CCC_ACTIVE)
     return 0;
+#endif
 
-  Curl_darwinssl_close(conn, sockindex);
+  Curl_sectransp_close(conn, sockindex);
 
   rc = 0;
 
@@ -3002,20 +3006,20 @@ static int Curl_darwinssl_shutdown(struct connectdata *conn, int sockindex)
   return rc;
 }
 
-static void Curl_darwinssl_session_free(void *ptr)
+static void Curl_sectransp_session_free(void *ptr)
 {
   /* ST, as of iOS 5 and Mountain Lion, has no public method of deleting a
      cached session ID inside the Security framework. There is a private
      function that does this, but I don't want to have to explain to you why I
      got your application rejected from the App Store due to the use of a
      private API, so the best we can do is free up our own char array that we
-     created way back in darwinssl_connect_step1... */
+     created way back in sectransp_connect_step1... */
   Curl_safefree(ptr);
 }
 
-static size_t Curl_darwinssl_version(char *buffer, size_t size)
+static size_t Curl_sectransp_version(char *buffer, size_t size)
 {
-  return snprintf(buffer, size, "SecureTransport");
+  return msnprintf(buffer, size, "SecureTransport");
 }
 
 /*
@@ -3026,7 +3030,7 @@ static size_t Curl_darwinssl_version(char *buffer, size_t size)
  *     0 means the connection has been closed
  *    -1 means the connection status is unknown
  */
-static int Curl_darwinssl_check_cxn(struct connectdata *conn)
+static int Curl_sectransp_check_cxn(struct connectdata *conn)
 {
   struct ssl_connect_data *connssl = &conn->ssl[FIRSTSOCKET];
   OSStatus err;
@@ -3041,7 +3045,7 @@ static int Curl_darwinssl_check_cxn(struct connectdata *conn)
   return 0;
 }
 
-static bool Curl_darwinssl_data_pending(const struct connectdata *conn,
+static bool Curl_sectransp_data_pending(const struct connectdata *conn,
                                         int connindex)
 {
   const struct ssl_connect_data *connssl = &conn->ssl[connindex];
@@ -3058,7 +3062,7 @@ static bool Curl_darwinssl_data_pending(const struct connectdata *conn,
     return false;
 }
 
-static CURLcode Curl_darwinssl_random(struct Curl_easy *data UNUSED_PARAM,
+static CURLcode Curl_sectransp_random(struct Curl_easy *data UNUSED_PARAM,
                                       unsigned char *entropy, size_t length)
 {
   /* arc4random_buf() isn't available on cats older than Lion, so let's
@@ -3078,7 +3082,7 @@ static CURLcode Curl_darwinssl_random(struct Curl_easy *data UNUSED_PARAM,
   return CURLE_OK;
 }
 
-static CURLcode Curl_darwinssl_md5sum(unsigned char *tmp, /* input */
+static CURLcode Curl_sectransp_md5sum(unsigned char *tmp, /* input */
                                       size_t tmplen,
                                       unsigned char *md5sum, /* output */
                                       size_t md5len)
@@ -3088,7 +3092,7 @@ static CURLcode Curl_darwinssl_md5sum(unsigned char *tmp, /* input */
   return CURLE_OK;
 }
 
-static CURLcode Curl_darwinssl_sha256sum(const unsigned char *tmp, /* input */
+static CURLcode Curl_sectransp_sha256sum(const unsigned char *tmp, /* input */
                                      size_t tmplen,
                                      unsigned char *sha256sum, /* output */
                                      size_t sha256len)
@@ -3098,7 +3102,7 @@ static CURLcode Curl_darwinssl_sha256sum(const unsigned char *tmp, /* input */
   return CURLE_OK;
 }
 
-static bool Curl_darwinssl_false_start(void)
+static bool Curl_sectransp_false_start(void)
 {
 #if CURL_BUILD_MAC_10_9 || CURL_BUILD_IOS_7
   if(SSLSetSessionOption != NULL)
@@ -3107,7 +3111,7 @@ static bool Curl_darwinssl_false_start(void)
   return FALSE;
 }
 
-static ssize_t darwinssl_send(struct connectdata *conn,
+static ssize_t sectransp_send(struct connectdata *conn,
                               int sockindex,
                               const void *mem,
                               size_t len,
@@ -3173,7 +3177,7 @@ static ssize_t darwinssl_send(struct connectdata *conn,
   return (ssize_t)processed;
 }
 
-static ssize_t darwinssl_recv(struct connectdata *conn,
+static ssize_t sectransp_recv(struct connectdata *conn,
                               int num,
                               char *buf,
                               size_t buffersize,
@@ -3213,48 +3217,48 @@ static ssize_t darwinssl_recv(struct connectdata *conn,
   return (ssize_t)processed;
 }
 
-static void *Curl_darwinssl_get_internals(struct ssl_connect_data *connssl,
+static void *Curl_sectransp_get_internals(struct ssl_connect_data *connssl,
                                           CURLINFO info UNUSED_PARAM)
 {
   (void)info;
   return BACKEND->ssl_ctx;
 }
 
-const struct Curl_ssl Curl_ssl_darwinssl = {
-  { CURLSSLBACKEND_DARWINSSL, "darwinssl" }, /* info */
+const struct Curl_ssl Curl_ssl_sectransp = {
+  { CURLSSLBACKEND_SECURETRANSPORT, "secure-transport" }, /* info */
 
-#ifdef DARWIN_SSL_PINNEDPUBKEY
+#ifdef SECTRANSP_PINNEDPUBKEY
   SSLSUPP_PINNEDPUBKEY,
 #else
   0,
-#endif /* DARWIN_SSL_PINNEDPUBKEY */
+#endif /* SECTRANSP_PINNEDPUBKEY */
 
   sizeof(struct ssl_backend_data),
 
   Curl_none_init,                     /* init */
   Curl_none_cleanup,                  /* cleanup */
-  Curl_darwinssl_version,             /* version */
-  Curl_darwinssl_check_cxn,           /* check_cxn */
-  Curl_darwinssl_shutdown,            /* shutdown */
-  Curl_darwinssl_data_pending,        /* data_pending */
-  Curl_darwinssl_random,              /* random */
+  Curl_sectransp_version,             /* version */
+  Curl_sectransp_check_cxn,           /* check_cxn */
+  Curl_sectransp_shutdown,            /* shutdown */
+  Curl_sectransp_data_pending,        /* data_pending */
+  Curl_sectransp_random,              /* random */
   Curl_none_cert_status_request,      /* cert_status_request */
-  Curl_darwinssl_connect,             /* connect */
-  Curl_darwinssl_connect_nonblocking, /* connect_nonblocking */
-  Curl_darwinssl_get_internals,       /* get_internals */
-  Curl_darwinssl_close,               /* close_one */
+  Curl_sectransp_connect,             /* connect */
+  Curl_sectransp_connect_nonblocking, /* connect_nonblocking */
+  Curl_sectransp_get_internals,       /* get_internals */
+  Curl_sectransp_close,               /* close_one */
   Curl_none_close_all,                /* close_all */
-  Curl_darwinssl_session_free,        /* session_free */
+  Curl_sectransp_session_free,        /* session_free */
   Curl_none_set_engine,               /* set_engine */
   Curl_none_set_engine_default,       /* set_engine_default */
   Curl_none_engines_list,             /* engines_list */
-  Curl_darwinssl_false_start,         /* false_start */
-  Curl_darwinssl_md5sum,              /* md5sum */
-  Curl_darwinssl_sha256sum            /* sha256sum */
+  Curl_sectransp_false_start,         /* false_start */
+  Curl_sectransp_md5sum,              /* md5sum */
+  Curl_sectransp_sha256sum            /* sha256sum */
 };
 
 #ifdef __clang__
 #pragma clang diagnostic pop
 #endif
 
-#endif /* USE_DARWINSSL */
+#endif /* USE_SECTRANSP */
diff --git a/Utilities/cmcurl/lib/vtls/darwinssl.h b/Utilities/cmcurl/lib/vtls/sectransp.h
index 23c7f70..5cec797 100644
--- a/Utilities/cmcurl/lib/vtls/darwinssl.h
+++ b/Utilities/cmcurl/lib/vtls/sectransp.h
@@ -1,5 +1,5 @@
-#ifndef HEADER_CURL_DARWINSSL_H
-#define HEADER_CURL_DARWINSSL_H
+#ifndef HEADER_CURL_SECTRANSP_H
+#define HEADER_CURL_SECTRANSP_H
 /***************************************************************************
  *                                  _   _ ____  _
  *  Project                     ___| | | |  _ \| |
@@ -8,7 +8,7 @@
  *                             \___|\___/|_| \_\_____|
  *
  * Copyright (C) 2012 - 2014, Nick Zitzmann, <nickzman@gmail.com>.
- * Copyright (C) 2012 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 2012 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -24,9 +24,9 @@
  ***************************************************************************/
 #include "curl_setup.h"
 
-#ifdef USE_DARWINSSL
+#ifdef USE_SECTRANSP
 
-extern const struct Curl_ssl Curl_ssl_darwinssl;
+extern const struct Curl_ssl Curl_ssl_sectransp;
 
-#endif /* USE_DARWINSSL */
-#endif /* HEADER_CURL_DARWINSSL_H */
+#endif /* USE_SECTRANSP */
+#endif /* HEADER_CURL_SECTRANSP_H */
diff --git a/Utilities/cmcurl/lib/vtls/vtls.c b/Utilities/cmcurl/lib/vtls/vtls.c
index 6af39fe..a7452dc 100644
--- a/Utilities/cmcurl/lib/vtls/vtls.c
+++ b/Utilities/cmcurl/lib/vtls/vtls.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -248,7 +248,7 @@ Curl_ssl_connect(struct connectdata *conn, int sockindex)
   conn->ssl[sockindex].use = TRUE;
   conn->ssl[sockindex].state = ssl_connection_negotiating;
 
-  result = Curl_ssl->connect(conn, sockindex);
+  result = Curl_ssl->connect_blocking(conn, sockindex);
 
   if(!result)
     Curl_pgrsTime(conn->data, TIMER_APPCONNECT); /* SSL is connected */
@@ -498,9 +498,9 @@ CURLcode Curl_ssl_addsessionid(struct connectdata *conn,
 
 void Curl_ssl_close_all(struct Curl_easy *data)
 {
-  size_t i;
   /* kill the session ID cache if not shared */
   if(data->state.session && !SSLSESSION_SHARED(data)) {
+    size_t i;
     for(i = 0; i < data->set.general_ssl.max_ssl_sessions; i++)
       /* the single-killer function handles empty table slots */
       Curl_ssl_kill_session(&data->state.session[i]);
@@ -513,7 +513,7 @@ void Curl_ssl_close_all(struct Curl_easy *data)
 }
 
 #if defined(USE_OPENSSL) || defined(USE_GNUTLS) || defined(USE_SCHANNEL) || \
-  defined(USE_DARWINSSL) || defined(USE_POLARSSL) || defined(USE_NSS) || \
+  defined(USE_SECTRANSP) || defined(USE_POLARSSL) || defined(USE_NSS) || \
   defined(USE_MBEDTLS) || defined(USE_CYASSL)
 int Curl_ssl_getsock(struct connectdata *conn, curl_socket_t *socks,
                      int numsocks)
@@ -546,7 +546,7 @@ int Curl_ssl_getsock(struct connectdata *conn,
   (void)numsocks;
   return GETSOCK_BLANK;
 }
-/* USE_OPENSSL || USE_GNUTLS || USE_SCHANNEL || USE_DARWINSSL || USE_NSS */
+/* USE_OPENSSL || USE_GNUTLS || USE_SCHANNEL || USE_SECTRANSP || USE_NSS */
 #endif
 
 void Curl_ssl_close(struct connectdata *conn, int sockindex)
@@ -557,7 +557,7 @@ void Curl_ssl_close(struct connectdata *conn, int sockindex)
 
 CURLcode Curl_ssl_shutdown(struct connectdata *conn, int sockindex)
 {
-  if(Curl_ssl->shutdown(conn, sockindex))
+  if(Curl_ssl->shut_down(conn, sockindex))
     return CURLE_SSL_SHUTDOWN_FAILED;
 
   conn->ssl[sockindex].use = FALSE; /* get back to ordinary socket usage */
@@ -644,11 +644,11 @@ bool Curl_ssl_data_pending(const struct connectdata *conn,
 
 void Curl_ssl_free_certinfo(struct Curl_easy *data)
 {
-  int i;
   struct curl_certinfo *ci = &data->info.certs;
 
   if(ci->num_of_certs) {
     /* free all individual lists used */
+    int i;
     for(i = 0; i<ci->num_of_certs; i++) {
       curl_slist_free_all(ci->certinfo[i]);
       ci->certinfo[i] = NULL;
@@ -700,7 +700,7 @@ CURLcode Curl_ssl_push_certinfo_len(struct Curl_easy *data,
     return CURLE_OUT_OF_MEMORY;
 
   /* sprintf the label and colon */
-  snprintf(output, outlen, "%s:", label);
+  msnprintf(output, outlen, "%s:", label);
 
   /* memcpy the value (it might not be zero terminated) */
   memcpy(&output[labellen + 1], value, valuelen);
@@ -808,14 +808,7 @@ CURLcode Curl_pin_peer_pubkey(struct Curl_easy *data,
 {
   FILE *fp;
   unsigned char *buf = NULL, *pem_ptr = NULL;
-  long filesize;
-  size_t size, pem_len;
-  CURLcode pem_read;
   CURLcode result = CURLE_SSL_PINNEDPUBKEYNOTMATCH;
-  CURLcode encode;
-  size_t encodedlen, pinkeylen;
-  char *encoded, *pinkeycopy, *begin_pos, *end_pos;
-  unsigned char *sha256sumdigest = NULL;
 
   /* if a path wasn't specified, don't pin */
   if(!pinnedpubkey)
@@ -825,6 +818,11 @@ CURLcode Curl_pin_peer_pubkey(struct Curl_easy *data,
 
   /* only do this if pinnedpubkey starts with "sha256//", length 8 */
   if(strncmp(pinnedpubkey, "sha256//", 8) == 0) {
+    CURLcode encode;
+    size_t encodedlen, pinkeylen;
+    char *encoded, *pinkeycopy, *begin_pos, *end_pos;
+    unsigned char *sha256sumdigest;
+
     if(!Curl_ssl->sha256sum) {
       /* without sha256 support, this cannot match */
       return result;
@@ -895,6 +893,10 @@ CURLcode Curl_pin_peer_pubkey(struct Curl_easy *data,
     return result;
 
   do {
+    long filesize;
+    size_t size, pem_len;
+    CURLcode pem_read;
+
     /* Determine the file's size */
     if(fseek(fp, 0, SEEK_END))
       break;
@@ -1114,7 +1116,7 @@ static CURLcode Curl_multissl_connect(struct connectdata *conn, int sockindex)
 {
   if(multissl_init(NULL))
     return CURLE_FAILED_INIT;
-  return Curl_ssl->connect(conn, sockindex);
+  return Curl_ssl->connect_blocking(conn, sockindex);
 }
 
 static CURLcode Curl_multissl_connect_nonblocking(struct connectdata *conn,
@@ -1170,12 +1172,10 @@ static const struct Curl_ssl Curl_ssl_multi = {
 const struct Curl_ssl *Curl_ssl =
 #if defined(CURL_WITH_MULTI_SSL)
   &Curl_ssl_multi;
-#elif defined(USE_AXTLS)
-  &Curl_ssl_axtls;
 #elif defined(USE_CYASSL)
   &Curl_ssl_cyassl;
-#elif defined(USE_DARWINSSL)
-  &Curl_ssl_darwinssl;
+#elif defined(USE_SECTRANSP)
+  &Curl_ssl_sectransp;
 #elif defined(USE_GNUTLS)
   &Curl_ssl_gnutls;
 #elif defined(USE_GSKIT)
@@ -1197,14 +1197,11 @@ const struct Curl_ssl *Curl_ssl =
 #endif
 
 static const struct Curl_ssl *available_backends[] = {
-#if defined(USE_AXTLS)
-  &Curl_ssl_axtls,
-#endif
 #if defined(USE_CYASSL)
   &Curl_ssl_cyassl,
 #endif
-#if defined(USE_DARWINSSL)
-  &Curl_ssl_darwinssl,
+#if defined(USE_SECTRANSP)
+  &Curl_ssl_sectransp,
 #endif
 #if defined(USE_GNUTLS)
   &Curl_ssl_gnutls,
@@ -1244,16 +1241,17 @@ static size_t Curl_multissl_version(char *buffer, size_t size)
 
   if(current != selected) {
     char *p = backends;
+    char *end = backends + sizeof(backends);
     int i;
 
     selected = current;
 
-    for(i = 0; available_backends[i]; i++) {
+    for(i = 0; available_backends[i] && p < (end - 4); i++) {
       if(i)
         *(p++) = ' ';
       if(selected != available_backends[i])
         *(p++) = '(';
-      p += available_backends[i]->version(p, backends + sizeof(backends) - p);
+      p += available_backends[i]->version(p, end - p - 2);
       if(selected != available_backends[i])
         *(p++) = ')';
     }
@@ -1261,21 +1259,20 @@ static size_t Curl_multissl_version(char *buffer, size_t size)
     total = p - backends;
   }
 
-  if(size < total)
+  if(size > total)
     memcpy(buffer, backends, total + 1);
   else {
     memcpy(buffer, backends, size - 1);
     buffer[size - 1] = '\0';
   }
 
-  return total;
+  return CURLMIN(size - 1, total);
 }
 
 static int multissl_init(const struct Curl_ssl *backend)
 {
   const char *env;
   char *env_tmp;
-  int i;
 
   if(Curl_ssl != &Curl_ssl_multi)
     return 1;
@@ -1294,6 +1291,7 @@ static int multissl_init(const struct Curl_ssl *backend)
     env = CURL_DEFAULT_SSL_BACKEND;
 #endif
   if(env) {
+    int i;
     for(i = 0; available_backends[i]; i++) {
       if(strcasecompare(env, available_backends[i]->info.name)) {
         Curl_ssl = available_backends[i];
@@ -1318,7 +1316,14 @@ CURLsslset curl_global_sslset(curl_sslbackend id, const char *name,
     *avail = (const curl_ssl_backend **)&available_backends;
 
   if(Curl_ssl != &Curl_ssl_multi)
-    return id == Curl_ssl->info.id ? CURLSSLSET_OK : CURLSSLSET_TOO_LATE;
+    return id == Curl_ssl->info.id ||
+           (name && strcasecompare(name, Curl_ssl->info.name)) ?
+           CURLSSLSET_OK :
+#if defined(CURL_WITH_MULTI_SSL)
+           CURLSSLSET_TOO_LATE;
+#else
+           CURLSSLSET_UNKNOWN_BACKEND;
+#endif
 
   for(i = 0; available_backends[i]; i++) {
     if(available_backends[i]->info.id == id ||
diff --git a/Utilities/cmcurl/lib/vtls/vtls.h b/Utilities/cmcurl/lib/vtls/vtls.h
index 5cd1160..2a87ca1 100644
--- a/Utilities/cmcurl/lib/vtls/vtls.h
+++ b/Utilities/cmcurl/lib/vtls/vtls.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -47,7 +47,7 @@ struct Curl_ssl {
 
   size_t (*version)(char *buffer, size_t size);
   int (*check_cxn)(struct connectdata *cxn);
-  int (*shutdown)(struct connectdata *conn, int sockindex);
+  int (*shut_down)(struct connectdata *conn, int sockindex);
   bool (*data_pending)(const struct connectdata *conn,
                        int connindex);
 
@@ -56,7 +56,7 @@ struct Curl_ssl {
                      size_t length);
   bool (*cert_status_request)(void);
 
-  CURLcode (*connect)(struct connectdata *conn, int sockindex);
+  CURLcode (*connect_blocking)(struct connectdata *conn, int sockindex);
   CURLcode (*connect_nonblocking)(struct connectdata *conn, int sockindex,
                                   bool *done);
   void *(*get_internals)(struct ssl_connect_data *connssl, CURLINFO info);
@@ -103,10 +103,9 @@ CURLcode Curl_none_md5sum(unsigned char *input, size_t inputlen,
 #include "nssg.h"           /* NSS versions */
 #include "gskit.h"          /* Global Secure ToolKit versions */
 #include "polarssl.h"       /* PolarSSL versions */
-#include "axtls.h"          /* axTLS versions */
 #include "cyassl.h"         /* CyaSSL versions */
 #include "schannel.h"       /* Schannel SSPI version */
-#include "darwinssl.h"      /* SecureTransport (Darwin) version */
+#include "sectransp.h"      /* SecureTransport (Darwin) version */
 #include "mbedtls.h"        /* mbedTLS versions */
 #include "mesalink.h"       /* MesaLink versions */