From d302d0e71085efc1f3c7d150e571cd9bb1901600 Mon Sep 17 00:00:00 2001
From: stanton <stanton>
Date: Wed, 3 Feb 1999 00:51:19 +0000
Subject: * unix/tclUnixChan.c: * win/tclWinSock.c: * doc/socket.n: Applied
 Gordon Chaffee's patch to handle failures during asynchronous socket
 connection operations.  This adds a new "-error" fconfgure option to socket
 channels. [Bug: 893]

---
 doc/socket.n       | 13 +++++++++++--
 unix/tclUnixChan.c | 19 ++++++++++++++++++-
 win/tclWinSock.c   | 24 +++++++++++++++++++++---
 3 files changed, 50 insertions(+), 6 deletions(-)

diff --git a/doc/socket.n b/doc/socket.n
index 27f166f..ebb7383 100644
--- a/doc/socket.n
+++ b/doc/socket.n
@@ -1,12 +1,13 @@
 '\"
 '\" Copyright (c) 1996 Sun Microsystems, Inc.
+'\" Copyright (c) 1998-1999 by Scriptics Corporation.
 '\"
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\"
-'\" RCS: @(#) $Id: socket.n,v 1.2 1998/09/14 18:39:55 stanton Exp $
+'\" RCS: @(#) $Id: socket.n,v 1.3 1999/02/03 00:51:19 stanton Exp $
 .so man.macros
-.TH socket n 7.5 Tcl "Tcl Built-In Commands"
+.TH socket n 8.0 Tcl "Tcl Built-In Commands"
 .BS
 '\" Note:  do not modify the .SH NAME line immediately below!
 .SH NAME
@@ -103,6 +104,14 @@ will be accepted.
 .SH CONFIGURATION OPTIONS
 The \fBfconfigure\fR command can be used to query several readonly
 configuration options for socket channels:
+.VS
+.TP
+\fB\-error\fR
+This option gets the current error status of the given socket.  This
+is useful when you need to determine if an asynchronous connect
+operation succeeded.  If there was an error, the error message is
+returned.  If there was no error, an empty string is returned.
+.VE
 .TP
 \fB\-sockname\fR
 This option returns a list of three elements, the address, the host name
diff --git a/unix/tclUnixChan.c b/unix/tclUnixChan.c
index 4fe0144..2759a41 100644
--- a/unix/tclUnixChan.c
+++ b/unix/tclUnixChan.c
@@ -9,7 +9,7 @@
  * See the file "license.terms" for information on usage and redistribution
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * RCS: @(#) $Id: tclUnixChan.c,v 1.8 1999/01/04 19:25:04 rjohnson Exp $
+ * RCS: @(#) $Id: tclUnixChan.c,v 1.9 1999/02/03 00:51:20 stanton Exp $
  */
 
 #include	"tclInt.h"	/* Internal definitions for Tcl. */
@@ -1659,6 +1659,23 @@ TcpGetOptionProc(instanceData, interp, optionName, dsPtr)
         len = strlen(optionName);
     }
 
+    if ((len > 1) && (optionName[1] == 'e') &&
+                    (strncmp(optionName, "-error", len) == 0)) {
+       int optlen;
+       int err, ret;
+    
+       optlen = sizeof(int);
+       ret = getsockopt(statePtr->fd, SOL_SOCKET, SO_ERROR,
+                        (char *)&err, &optlen);
+       if (ret < 0) {
+           err = errno;
+       }
+       if (err != 0) {
+           Tcl_DStringAppend(dsPtr, Tcl_ErrnoMsg(err), -1);
+       }
+       return TCL_OK;
+    }
+
     if ((len == 0) ||
             ((len > 1) && (optionName[1] == 'p') &&
                     (strncmp(optionName, "-peername", len) == 0))) {
diff --git a/win/tclWinSock.c b/win/tclWinSock.c
index 00e7f22..a8f2a2f 100644
--- a/win/tclWinSock.c
+++ b/win/tclWinSock.c
@@ -8,7 +8,7 @@
  * See the file "license.terms" for information on usage and redistribution
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * RCS: @(#) $Id: tclWinSock.c,v 1.4 1998/12/04 01:01:55 stanton Exp $
+ * RCS: @(#) $Id: tclWinSock.c,v 1.5 1999/02/03 00:51:20 stanton Exp $
  */
 
 #include "tclInt.h"
@@ -699,7 +699,7 @@ SocketEventProc(evPtr, flags)
 	}
 
     }
-    if (events & FD_WRITE) {
+    if (events & (FD_WRITE | FD_CONNECT)) {
 	mask |= TCL_WRITABLE;
     }
 
@@ -1741,6 +1741,24 @@ TcpGetOptionProc(instanceData, interp, optionName, dsPtr)
         len = strlen(optionName);
     }
 
+    if ((len > 1) && (optionName[1] == 'e') &&
+                    (strncmp(optionName, "-error", len) == 0)) {
+       int optlen;
+       int err, ret;
+    
+       optlen = sizeof(int);
+       ret = TclWinGetSockOpt(sock, SOL_SOCKET, SO_ERROR,
+                              (char *)&err, &optlen);
+       if (ret == SOCKET_ERROR) {
+           err = (*winSock.WSAGetLastError)();
+       }
+       if (err) {
+           TclWinConvertWSAError(err);
+           Tcl_DStringAppend(dsPtr, Tcl_ErrnoMsg(Tcl_GetErrno()), -1);
+       }
+       return TCL_OK;
+    }
+
     if ((len == 0) ||
             ((len > 1) && (optionName[1] == 'p') &&
                     (strncmp(optionName, "-peername", len) == 0))) {
@@ -1868,7 +1886,7 @@ TcpWatchProc(instanceData, mask)
 	infoPtr->watchEvents |= (FD_READ|FD_CLOSE|FD_ACCEPT);
     }
     if (mask & TCL_WRITABLE) {
-	infoPtr->watchEvents |= (FD_WRITE);
+       infoPtr->watchEvents |= (FD_WRITE|FD_CONNECT);
     }
 
     /*
-- 
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