summaryrefslogtreecommitdiffstats
path: root/win/tclWinSock.c
diff options
context:
space:
mode:
Diffstat (limited to 'win/tclWinSock.c')
-rw-r--r--win/tclWinSock.c1226
1 files changed, 728 insertions, 498 deletions
diff --git a/win/tclWinSock.c b/win/tclWinSock.c
index 9fa01c9..1a74354 100644
--- a/win/tclWinSock.c
+++ b/win/tclWinSock.c
@@ -47,6 +47,13 @@
#include "tclWinInt.h"
+/*
+ * Which version of the winsock API do we want?
+ */
+
+#define WSA_VERSION_MAJOR 1
+#define WSA_VERSION_MINOR 1
+
#ifdef _MSC_VER
# pragma comment (lib, "ws2_32")
#endif
@@ -74,6 +81,7 @@
*/
static int initialized = 0;
+static const TCHAR classname[] = TEXT("TclSocket");
TCL_DECLARE_MUTEX(socketMutex)
/*
@@ -89,20 +97,44 @@ static ProcessGlobalValue hostName = {
* The following defines declare the messages used on socket windows.
*/
-#define SOCKET_MESSAGE WM_USER+1
-#define SOCKET_SELECT WM_USER+2
-#define SOCKET_TERMINATE WM_USER+3
-#define SELECT TRUE
-#define UNSELECT FALSE
+#define SOCKET_MESSAGE WM_USER+1
+#define SOCKET_SELECT WM_USER+2
+#define SOCKET_TERMINATE WM_USER+3
+#define SELECT TRUE
+#define UNSELECT FALSE
+
+/*
+ * This is needed to comply with the strict aliasing rules of GCC, but it also
+ * simplifies casting between the different sockaddr types.
+ */
+
+typedef union {
+ struct sockaddr sa;
+ struct sockaddr_in sa4;
+ struct sockaddr_in6 sa6;
+ struct sockaddr_storage sas;
+} address;
+
+#ifndef IN6_ARE_ADDR_EQUAL
+#define IN6_ARE_ADDR_EQUAL IN6_ADDR_EQUAL
+#endif
+
+typedef struct SocketInfo SocketInfo;
+
+typedef struct TcpFdList {
+ SocketInfo *infoPtr;
+ SOCKET fd;
+ struct TcpFdList *next;
+} TcpFdList;
/*
* The following structure is used to store the data associated with each
* socket.
*/
-typedef struct SocketInfo {
+struct SocketInfo {
Tcl_Channel channel; /* Channel associated with this socket. */
- SOCKET socket; /* Windows SOCKET handle. */
+ struct TcpFdList *sockets; /* Windows SOCKET handle. */
int flags; /* Bit field comprised of the flags described
* below. */
int watchEvents; /* OR'ed combination of FD_READ, FD_WRITE,
@@ -123,7 +155,7 @@ typedef struct SocketInfo {
int lastError; /* Error code from last message. */
struct SocketInfo *nextPtr; /* The next socket on the per-thread socket
* list. */
-} SocketInfo;
+};
/*
* The following structure is what is added to the Tcl event queue when a
@@ -181,15 +213,13 @@ static WNDCLASS windowClass;
static SocketInfo * CreateSocket(Tcl_Interp *interp, int port,
const char *host, int server, const char *myaddr,
int myport, int async);
-static int CreateSocketAddress(LPSOCKADDR_IN sockaddrPtr,
- const char *host, int port);
static void InitSockets(void);
static SocketInfo * NewSocketInfo(SOCKET socket);
static void SocketExitHandler(ClientData clientData);
static LRESULT CALLBACK SocketProc(HWND hwnd, UINT message, WPARAM wParam,
LPARAM lParam);
static int SocketsEnabled(void);
-static void TcpAccept(SocketInfo *infoPtr);
+static void TcpAccept(TcpFdList *fds, SOCKET newSocket, address addr);
static int WaitForSocketEvent(SocketInfo *infoPtr, int events,
int *errorCodePtr);
static DWORD WINAPI SocketThread(LPVOID arg);
@@ -201,6 +231,7 @@ static Tcl_EventProc SocketEventProc;
static Tcl_EventSetupProc SocketSetupProc;
static Tcl_DriverBlockModeProc TcpBlockProc;
static Tcl_DriverCloseProc TcpCloseProc;
+static Tcl_DriverClose2Proc TcpClose2Proc;
static Tcl_DriverSetOptionProc TcpSetOptionProc;
static Tcl_DriverGetOptionProc TcpGetOptionProc;
static Tcl_DriverInputProc TcpInputProc;
@@ -213,7 +244,7 @@ static Tcl_DriverGetHandleProc TcpGetHandleProc;
* based IO.
*/
-static Tcl_ChannelType tcpChannelType = {
+static const Tcl_ChannelType tcpChannelType = {
"tcp", /* Type name. */
TCL_CHANNEL_VERSION_5, /* v5 channel */
TcpCloseProc, /* Close proc. */
@@ -224,13 +255,13 @@ static Tcl_ChannelType tcpChannelType = {
TcpGetOptionProc, /* Get option proc. */
TcpWatchProc, /* Set up notifier to watch this channel. */
TcpGetHandleProc, /* Get an OS handle from channel. */
- NULL, /* close2proc. */
+ TcpClose2Proc, /* Close2proc. */
TcpBlockProc, /* Set socket into (non-)blocking mode. */
NULL, /* flush proc. */
NULL, /* handler proc. */
NULL, /* wide seek proc */
TcpThreadActionProc, /* thread action proc */
- NULL, /* truncate */
+ NULL /* truncate */
};
/*
@@ -256,15 +287,13 @@ static Tcl_ChannelType tcpChannelType = {
static void
InitSockets(void)
{
- DWORD id;
+ DWORD id, err;
WSADATA wsaData;
- DWORD err;
- ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
- TclThreadDataKeyGet(&dataKey);
+ ThreadSpecificData *tsdPtr = TclThreadDataKeyGet(&dataKey);
if (!initialized) {
initialized = 1;
- TclCreateLateExitHandler(SocketExitHandler, (ClientData) NULL);
+ TclCreateLateExitHandler(SocketExitHandler, NULL);
/*
* Create the async notification window with a new class. We must
@@ -279,12 +308,12 @@ InitSockets(void)
windowClass.hInstance = TclWinGetTclInstance();
windowClass.hbrBackground = NULL;
windowClass.lpszMenuName = NULL;
- windowClass.lpszClassName = "TclSocket";
+ windowClass.lpszClassName = classname;
windowClass.lpfnWndProc = SocketProc;
windowClass.hIcon = NULL;
windowClass.hCursor = NULL;
- if (!RegisterClassA(&windowClass)) {
+ if (!RegisterClass(&windowClass)) {
TclWinConvertError(GetLastError());
goto initFailure;
}
@@ -295,72 +324,73 @@ InitSockets(void)
* that it not be less than 1.1.
*/
-#define WSA_VERSION_MAJOR 1
-#define WSA_VERSION_MINOR 1
-#define WSA_VERSION_REQD MAKEWORD(WSA_VERSION_MAJOR, WSA_VERSION_MINOR)
-
- err = WSAStartup((WORD)WSA_VERSION_REQD, &wsaData);
+ err = WSAStartup((WORD) MAKEWORD(WSA_VERSION_MAJOR,WSA_VERSION_MINOR),
+ &wsaData);
if (err != 0) {
- TclWinConvertWSAError(err);
+ TclWinConvertError(err);
goto initFailure;
}
/*
- * Note the byte positions are swapped for the comparison, so that
- * 0x0002 (2.0, MAKEWORD(2,0)) doesn't look less than 0x0101 (1.1).
- * We want the comparison to be 0x0200 < 0x0101.
+ * Note the byte positions ae swapped for the comparison, so that
+ * 0x0002 (2.0, MAKEWORD(2,0)) doesn't look less than 0x0101 (1.1). We
+ * want the comparison to be 0x0200 < 0x0101.
*/
if (MAKEWORD(HIBYTE(wsaData.wVersion), LOBYTE(wsaData.wVersion))
< MAKEWORD(WSA_VERSION_MINOR, WSA_VERSION_MAJOR)) {
- TclWinConvertWSAError(WSAVERNOTSUPPORTED);
+ TclWinConvertError(WSAVERNOTSUPPORTED);
WSACleanup();
goto initFailure;
}
-
-#undef WSA_VERSION_REQD
-#undef WSA_VERSION_MAJOR
-#undef WSA_VERSION_MINOR
}
/*
* Check for per-thread initialization.
*/
- if (tsdPtr == NULL) {
- tsdPtr = TCL_TSD_INIT(&dataKey);
- tsdPtr->socketList = NULL;
- tsdPtr->hwnd = NULL;
- tsdPtr->threadId = Tcl_GetCurrentThread();
- tsdPtr->readyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
- if (tsdPtr->readyEvent == NULL) {
- goto initFailure;
- }
- tsdPtr->socketListLock = CreateEvent(NULL, FALSE, TRUE, NULL);
- if (tsdPtr->socketListLock == NULL) {
- goto initFailure;
- }
- tsdPtr->socketThread = CreateThread(NULL, 256, SocketThread, tsdPtr,
- 0, &id);
- if (tsdPtr->socketThread == NULL) {
- goto initFailure;
- }
+ if (tsdPtr != NULL) {
+ return;
+ }
- SetThreadPriority(tsdPtr->socketThread, THREAD_PRIORITY_HIGHEST);
+ /*
+ * OK, this thread has never done anything with sockets before. Construct
+ * a worker thread to handle asynchronous events related to sockets
+ * assigned to _this_ thread.
+ */
- /*
- * Wait for the thread to signal when the window has been created and
- * if it is ready to go.
- */
+ tsdPtr = TCL_TSD_INIT(&dataKey);
+ tsdPtr->socketList = NULL;
+ tsdPtr->hwnd = NULL;
+ tsdPtr->threadId = Tcl_GetCurrentThread();
+ tsdPtr->readyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
+ if (tsdPtr->readyEvent == NULL) {
+ goto initFailure;
+ }
+ tsdPtr->socketListLock = CreateEvent(NULL, FALSE, TRUE, NULL);
+ if (tsdPtr->socketListLock == NULL) {
+ goto initFailure;
+ }
+ tsdPtr->socketThread = CreateThread(NULL, 256, SocketThread, tsdPtr, 0,
+ &id);
+ if (tsdPtr->socketThread == NULL) {
+ goto initFailure;
+ }
- WaitForSingleObject(tsdPtr->readyEvent, INFINITE);
+ SetThreadPriority(tsdPtr->socketThread, THREAD_PRIORITY_HIGHEST);
- if (tsdPtr->hwnd == NULL) {
- goto initFailure; /* Trouble creating the window */
- }
+ /*
+ * Wait for the thread to signal when the window has been created and if
+ * it is ready to go.
+ */
+
+ WaitForSingleObject(tsdPtr->readyEvent, INFINITE);
- Tcl_CreateEventSource(SocketSetupProc, SocketCheckProc, NULL);
+ if (tsdPtr->hwnd == NULL) {
+ goto initFailure; /* Trouble creating the window. */
}
+
+ Tcl_CreateEventSource(SocketSetupProc, SocketCheckProc, NULL);
return;
initFailure:
@@ -390,6 +420,7 @@ static int
SocketsEnabled(void)
{
int enabled;
+
Tcl_MutexLock(&socketMutex);
enabled = (initialized == 1);
Tcl_MutexUnlock(&socketMutex);
@@ -420,13 +451,14 @@ SocketExitHandler(
ClientData clientData) /* Not used. */
{
Tcl_MutexLock(&socketMutex);
+
/*
* Make sure the socket event handling window is cleaned-up for, at
* most, this thread.
*/
TclpFinalizeSockets();
- UnregisterClass("TclSocket", TclWinGetTclInstance());
+ UnregisterClass(classname, TclWinGetTclInstance());
WSACleanup();
initialized = 0;
Tcl_MutexUnlock(&socketMutex);
@@ -454,34 +486,40 @@ SocketExitHandler(
void
TclpFinalizeSockets(void)
{
- ThreadSpecificData *tsdPtr;
+ ThreadSpecificData *tsdPtr = TclThreadDataKeyGet(&dataKey);
- tsdPtr = (ThreadSpecificData *) TclThreadDataKeyGet(&dataKey);
- if (tsdPtr != NULL) {
- if (tsdPtr->socketThread != NULL) {
- if (tsdPtr->hwnd != NULL) {
- if (PostMessage(tsdPtr->hwnd, SOCKET_TERMINATE, 0, 0)) {
- /*
- * Wait for the thread to exit. This ensures that we are
- * completely cleaned up before we leave this function.
- */
- WaitForSingleObject(tsdPtr->readyEvent, INFINITE);
- }
- tsdPtr->hwnd = NULL;
- }
- CloseHandle(tsdPtr->socketThread);
- tsdPtr->socketThread = NULL;
- }
- if (tsdPtr->readyEvent != NULL) {
- CloseHandle(tsdPtr->readyEvent);
- tsdPtr->readyEvent = NULL;
- }
- if (tsdPtr->socketListLock != NULL) {
- CloseHandle(tsdPtr->socketListLock);
- tsdPtr->socketListLock = NULL;
+ /*
+ * Careful! This is a finalizer!
+ */
+
+ if (tsdPtr == NULL) {
+ return;
+ }
+
+ if (tsdPtr->socketThread != NULL) {
+ if (tsdPtr->hwnd != NULL) {
+ PostMessage(tsdPtr->hwnd, SOCKET_TERMINATE, 0, 0);
+
+ /*
+ * Wait for the thread to exit. This ensures that we are
+ * completely cleaned up before we leave this function.
+ */
+
+ WaitForSingleObject(tsdPtr->readyEvent, INFINITE);
+ tsdPtr->hwnd = NULL;
}
- Tcl_DeleteEventSource(SocketSetupProc, SocketCheckProc, NULL);
+ CloseHandle(tsdPtr->socketThread);
+ tsdPtr->socketThread = NULL;
}
+ if (tsdPtr->readyEvent != NULL) {
+ CloseHandle(tsdPtr->readyEvent);
+ tsdPtr->readyEvent = NULL;
+ }
+ if (tsdPtr->socketListLock != NULL) {
+ CloseHandle(tsdPtr->socketListLock);
+ tsdPtr->socketListLock = NULL;
+ }
+ Tcl_DeleteEventSource(SocketSetupProc, SocketCheckProc, NULL);
}
/*
@@ -519,8 +557,8 @@ TclpHasSockets(
return TCL_OK;
}
if (interp != NULL) {
- Tcl_AppendResult(interp, "sockets are not available on this system",
- NULL);
+ Tcl_SetObjResult(interp, Tcl_NewStringObj(
+ "sockets are not available on this system", -1));
}
return TCL_ERROR;
}
@@ -612,9 +650,9 @@ SocketCheckProc(
if ((infoPtr->readyEvents & infoPtr->watchEvents)
&& !(infoPtr->flags & SOCKET_PENDING)) {
infoPtr->flags |= SOCKET_PENDING;
- evPtr = (SocketEvent *) ckalloc(sizeof(SocketEvent));
+ evPtr = ckalloc(sizeof(SocketEvent));
evPtr->header.proc = SocketEventProc;
- evPtr->socket = infoPtr->socket;
+ evPtr->socket = infoPtr->sockets->fd;
Tcl_QueueEvent((Tcl_Event *) evPtr, TCL_QUEUE_TAIL);
}
}
@@ -650,9 +688,12 @@ SocketEventProc(
{
SocketInfo *infoPtr;
SocketEvent *eventPtr = (SocketEvent *) evPtr;
- int mask = 0;
- int events;
+ int mask = 0, events;
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
+ TcpFdList *fds;
+ SOCKET newSocket;
+ address addr;
+ int len;
if (!(flags & TCL_FILE_EVENTS)) {
return 0;
@@ -665,17 +706,17 @@ SocketEventProc(
WaitForSingleObject(tsdPtr->socketListLock, INFINITE);
for (infoPtr = tsdPtr->socketList; infoPtr != NULL;
infoPtr = infoPtr->nextPtr) {
- if (infoPtr->socket == eventPtr->socket) {
+ if (infoPtr->sockets->fd == eventPtr->socket) {
break;
}
}
- SetEvent(tsdPtr->socketListLock);
/*
* Discard events that have gone stale.
*/
if (!infoPtr) {
+ SetEvent(tsdPtr->socketListLock);
return 1;
}
@@ -686,10 +727,66 @@ SocketEventProc(
*/
if (infoPtr->readyEvents & FD_ACCEPT) {
- TcpAccept(infoPtr);
+ for (fds = infoPtr->sockets; fds != NULL; fds = fds->next) {
+
+ /*
+ * Accept the incoming connection request.
+ */
+ len = sizeof(address);
+
+ newSocket = accept(fds->fd, &(addr.sa), &len);
+
+ /* On Tcl server sockets with multiple OS fds we loop over the fds trying
+ * an accept() on each, so we expect INVALID_SOCKET. There are also other
+ * network stack conditions that can result in FD_ACCEPT but a subsequent
+ * failure on accept() by the time we get around to it.
+ * Access to sockets (acceptEventCount, readyEvents) in socketList
+ * is still protected by the lock (prevents reintroduction of
+ * SF Tcl Bug 3056775.
+ */
+
+ if (newSocket == INVALID_SOCKET) {
+ /* int err = WSAGetLastError(); */
+ continue;
+ }
+
+ /*
+ * It is possible that more than one FD_ACCEPT has been sent, so an extra
+ * count must be kept. Decrement the count, and reset the readyEvent bit
+ * if the count is no longer > 0.
+ */
+ infoPtr->acceptEventCount--;
+
+ if (infoPtr->acceptEventCount <= 0) {
+ infoPtr->readyEvents &= ~(FD_ACCEPT);
+ }
+
+ SetEvent(tsdPtr->socketListLock);
+
+ /* Caution: TcpAccept() has the side-effect of evaluating the server
+ * accept script (via AcceptCallbackProc() in tclIOCmd.c), which can
+ * close the server socket and invalidate infoPtr and fds.
+ * If TcpAccept() accepts a socket we must return immediately and let
+ * SocketCheckProc queue additional FD_ACCEPT events.
+ */
+ TcpAccept(fds, newSocket, addr);
+ return 1;
+ }
+
+ /* Loop terminated with no sockets accepted; clear the ready mask so
+ * we can detect the next connection request. Note that connection
+ * requests are level triggered, so if there is a request already
+ * pending, a new event will be generated.
+ */
+ infoPtr->acceptEventCount = 0;
+ infoPtr->readyEvents &= ~(FD_ACCEPT);
+
+ SetEvent(tsdPtr->socketListLock);
return 1;
}
+ SetEvent(tsdPtr->socketListLock);
+
/*
* Mask off unwanted events and compute the read/write mask so we can
* notify the channel.
@@ -709,6 +806,7 @@ SocketEventProc(
*/
Tcl_Time blockTime = { 0, 0 };
+
Tcl_SetMaxBlockTime(&blockTime);
mask |= TCL_READABLE|TCL_WRITABLE;
} else if (events & FD_READ) {
@@ -727,7 +825,7 @@ SocketEventProc(
(WPARAM) UNSELECT, (LPARAM) infoPtr);
FD_ZERO(&readFds);
- FD_SET(infoPtr->socket, &readFds);
+ FD_SET(infoPtr->sockets->fd, &readFds);
timeout.tv_usec = 0;
timeout.tv_sec = 0;
@@ -778,7 +876,7 @@ TcpBlockProc(
int mode) /* TCL_MODE_BLOCKING or
* TCL_MODE_NONBLOCKING. */
{
- SocketInfo *infoPtr = (SocketInfo *) instanceData;
+ SocketInfo *infoPtr = instanceData;
if (mode == TCL_MODE_NONBLOCKING) {
infoPtr->flags |= SOCKET_ASYNC;
@@ -812,7 +910,7 @@ TcpCloseProc(
ClientData instanceData, /* The socket to close. */
Tcl_Interp *interp) /* Unused. */
{
- SocketInfo *infoPtr = (SocketInfo *) instanceData;
+ SocketInfo *infoPtr = instanceData;
/* TIP #218 */
int errorCode = 0;
/* ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); */
@@ -830,9 +928,15 @@ TcpCloseProc(
* background.
*/
- if (closesocket(infoPtr->socket) == SOCKET_ERROR) {
- TclWinConvertWSAError((DWORD) WSAGetLastError());
- errorCode = Tcl_GetErrno();
+ while ( infoPtr->sockets != NULL ) {
+ TcpFdList *thisfd = infoPtr->sockets;
+ infoPtr->sockets = thisfd->next;
+
+ if (closesocket(thisfd->fd) == SOCKET_ERROR) {
+ TclWinConvertError((DWORD) WSAGetLastError());
+ errorCode = Tcl_GetErrno();
+ }
+ ckfree(thisfd);
}
}
@@ -843,13 +947,113 @@ TcpCloseProc(
* fear of damaging the list.
*/
- ckfree((char *) infoPtr);
+ ckfree(infoPtr);
+ return errorCode;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TcpClose2Proc --
+ *
+ * This function is called by the generic IO level to perform the channel
+ * type specific part of a half-close: namely, a shutdown() on a socket.
+ *
+ * Results:
+ * 0 if successful, the value of errno if failed.
+ *
+ * Side effects:
+ * Shuts down one side of the socket.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+TcpClose2Proc(
+ ClientData instanceData, /* The socket to close. */
+ Tcl_Interp *interp, /* For error reporting. */
+ int flags) /* Flags that indicate which side to close. */
+{
+ SocketInfo *infoPtr = instanceData;
+ int errorCode = 0, sd;
+
+ /*
+ * Shutdown the OS socket handle.
+ */
+
+ switch (flags) {
+ case TCL_CLOSE_READ:
+ sd = SD_RECEIVE;
+ break;
+ case TCL_CLOSE_WRITE:
+ sd = SD_SEND;
+ break;
+ default:
+ if (interp) {
+ Tcl_SetObjResult(interp, Tcl_NewStringObj(
+ "Socket close2proc called bidirectionally", -1));
+ }
+ return TCL_ERROR;
+ }
+
+ /* single fd operation: Tcl_OpenTcpServer() does not set TCL_READABLE or
+ * TCL_WRITABLE so this should never be called for a server socket. */
+ if (shutdown(infoPtr->sockets->fd, sd) == SOCKET_ERROR) {
+ TclWinConvertError((DWORD) WSAGetLastError());
+ errorCode = Tcl_GetErrno();
+ }
+
return errorCode;
}
/*
*----------------------------------------------------------------------
*
+ * AddSocketInfoFd --
+ *
+ * This function adds a SOCKET file descriptor to the 'sockets' linked
+ * list of a SocketInfo structure.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * None, except for allocation of memory.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+AddSocketInfoFd(
+ SocketInfo *infoPtr,
+ SOCKET socket)
+{
+ TcpFdList *fds = infoPtr->sockets;
+
+ if ( fds == NULL ) {
+ /* Add the first FD */
+ infoPtr->sockets = ckalloc(sizeof(TcpFdList));
+ fds = infoPtr->sockets;
+ } else {
+ /* Find end of list and append FD */
+ while ( fds->next != NULL ) {
+ fds = fds->next;
+ }
+
+ fds->next = ckalloc(sizeof(TcpFdList));
+ fds = fds->next;
+ }
+
+ /* Populate new FD */
+ fds->fd = socket;
+ fds->infoPtr = infoPtr;
+ fds->next = NULL;
+}
+
+
+/*
+ *----------------------------------------------------------------------
+ *
* NewSocketInfo --
*
* This function allocates and initializes a new SocketInfo structure.
@@ -867,12 +1071,11 @@ static SocketInfo *
NewSocketInfo(
SOCKET socket)
{
- SocketInfo *infoPtr;
- /* ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); */
+ SocketInfo *infoPtr = ckalloc(sizeof(SocketInfo));
- infoPtr = (SocketInfo *) ckalloc((unsigned) sizeof(SocketInfo));
+ /* ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); */
infoPtr->channel = 0;
- infoPtr->socket = socket;
+ infoPtr->sockets = NULL;
infoPtr->flags = 0;
infoPtr->watchEvents = 0;
infoPtr->readyEvents = 0;
@@ -890,6 +1093,8 @@ NewSocketInfo(
infoPtr->nextPtr = NULL;
+ AddSocketInfoFd(infoPtr, socket);
+
return infoPtr;
}
@@ -925,12 +1130,15 @@ CreateSocket(
u_long flag = 1; /* Indicates nonblocking mode. */
int asyncConnect = 0; /* Will be 1 if async connect is in
* progress. */
- SOCKADDR_IN sockaddr; /* Socket address */
- SOCKADDR_IN mysockaddr; /* Socket address for client */
+ unsigned short chosenport = 0;
+ struct addrinfo *addrlist = NULL, *addrPtr;
+ /* Socket address to connect to. */
+ struct addrinfo *myaddrlist = NULL, *myaddrPtr;
+ /* Socket address for our side. */
+ const char *errorMsg = NULL;
SOCKET sock = INVALID_SOCKET;
- SocketInfo *infoPtr; /* The returned value. */
- ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
- TclThreadDataKeyGet(&dataKey);
+ SocketInfo *infoPtr = NULL; /* The returned value. */
+ ThreadSpecificData *tsdPtr = TclThreadDataKeyGet(&dataKey);
/*
* Check that WinSock is initialized; do not call it if not, to prevent
@@ -942,112 +1150,195 @@ CreateSocket(
return NULL;
}
- if (!CreateSocketAddress(&sockaddr, host, port)) {
- goto error;
- }
- if ((myaddr != NULL || myport != 0) &&
- !CreateSocketAddress(&mysockaddr, myaddr, myport)) {
+ /*
+ * Construct the addresses for each end of the socket.
+ */
+
+ if (!TclCreateSocketAddress(interp, &addrlist, host, port, server,
+ &errorMsg)) {
goto error;
}
-
- sock = socket(AF_INET, SOCK_STREAM, 0);
- if (sock == INVALID_SOCKET) {
+ if (!TclCreateSocketAddress(interp, &myaddrlist, myaddr, myport, 1,
+ &errorMsg)) {
goto error;
}
- /*
- * Win-NT has a misfeature that sockets are inherited in child processes
- * by default. Turn off the inherit bit.
- */
+ if (server) {
- SetHandleInformation((HANDLE) sock, HANDLE_FLAG_INHERIT, 0);
+ for (addrPtr = addrlist; addrPtr != NULL; addrPtr = addrPtr->ai_next) {
+ sock = socket(addrPtr->ai_family, SOCK_STREAM, 0);
+ if (sock == INVALID_SOCKET) {
+ TclWinConvertError((DWORD) WSAGetLastError());
+ continue;
+ }
- /*
- * Set kernel space buffering
- */
+ /*
+ * Win-NT has a misfeature that sockets are inherited in child
+ * processes by default. Turn off the inherit bit.
+ */
- TclSockMinimumBuffers((void *)sock, TCP_BUFFER_SIZE);
+ SetHandleInformation((HANDLE) sock, HANDLE_FLAG_INHERIT, 0);
- if (server) {
- /*
- * Bind to the specified port. Note that we must not call setsockopt
- * with SO_REUSEADDR because Microsoft allows addresses to be reused
- * even if they are still in use.
- *
- * Bind should not be affected by the socket having already been set
- * into nonblocking mode. If there is trouble, this is one place to
- * look for bugs.
- */
+ /*
+ * Set kernel space buffering
+ */
- if (bind(sock, (SOCKADDR *) &sockaddr, sizeof(SOCKADDR_IN))
- == SOCKET_ERROR) {
- goto error;
- }
+ TclSockMinimumBuffers((void *)sock, TCP_BUFFER_SIZE);
- /*
- * Set the maximum number of pending connect requests to the max value
- * allowed on each platform (Win32 and Win32s may be different, and
- * there may be differences between TCP/IP stacks).
- */
+ /*
+ * Make sure we use the same port when opening two server sockets
+ * for IPv4 and IPv6.
+ *
+ * As sockaddr_in6 uses the same offset and size for the port
+ * member as sockaddr_in, we can handle both through the IPv4 API.
+ */
- if (listen(sock, SOMAXCONN) == SOCKET_ERROR) {
- goto error;
- }
+ if (port == 0 && chosenport != 0) {
+ ((struct sockaddr_in *) addrPtr->ai_addr)->sin_port =
+ htons(chosenport);
+ }
- /*
- * Add this socket to the global list of sockets.
- */
+ /*
+ * Bind to the specified port. Note that we must not call
+ * setsockopt with SO_REUSEADDR because Microsoft allows addresses
+ * to be reused even if they are still in use.
+ *
+ * Bind should not be affected by the socket having already been
+ * set into nonblocking mode. If there is trouble, this is one
+ * place to look for bugs.
+ */
- infoPtr = NewSocketInfo(sock);
+ if (bind(sock, addrPtr->ai_addr, addrPtr->ai_addrlen)
+ == SOCKET_ERROR) {
+ TclWinConvertError((DWORD) WSAGetLastError());
+ closesocket(sock);
+ continue;
+ }
+ if (port == 0 && chosenport == 0) {
+ address sockname;
+ socklen_t namelen = sizeof(sockname);
- /*
- * Set up the select mask for connection request events.
- */
+ /*
+ * Synchronize port numbers when binding to port 0 of multiple
+ * addresses.
+ */
- infoPtr->selectEvents = FD_ACCEPT;
- infoPtr->watchEvents |= FD_ACCEPT;
+ if (getsockname(sock, &sockname.sa, &namelen) >= 0) {
+ chosenport = ntohs(sockname.sa4.sin_port);
+ }
+ }
- } else {
- /*
- * Try to bind to a local port, if specified.
- */
+ /*
+ * Set the maximum number of pending connect requests to the max
+ * value allowed on each platform (Win32 and Win32s may be
+ * different, and there may be differences between TCP/IP stacks).
+ */
- if (myaddr != NULL || myport != 0) {
- if (bind(sock, (SOCKADDR *) &mysockaddr, sizeof(SOCKADDR_IN))
- == SOCKET_ERROR) {
- goto error;
+ if (listen(sock, SOMAXCONN) == SOCKET_ERROR) {
+ TclWinConvertError((DWORD) WSAGetLastError());
+ closesocket(sock);
+ continue;
}
- }
- /*
- * Set the socket into nonblocking mode if the connect should be done
- * in the background.
- */
+ if (infoPtr == NULL) {
+ /*
+ * Add this socket to the global list of sockets.
+ */
+
+ infoPtr = NewSocketInfo(sock);
+
+ /*
+ * Set up the select mask for connection request events.
+ */
+
+ infoPtr->selectEvents = FD_ACCEPT;
+ infoPtr->watchEvents |= FD_ACCEPT;
- if (async) {
- if (ioctlsocket(sock, (long) FIONBIO, &flag) == SOCKET_ERROR) {
- goto error;
+ } else {
+ AddSocketInfoFd( infoPtr, sock );
}
}
+ } else {
+ for (addrPtr = addrlist; addrPtr != NULL;
+ addrPtr = addrPtr->ai_next) {
+ for (myaddrPtr = myaddrlist; myaddrPtr != NULL;
+ myaddrPtr = myaddrPtr->ai_next) {
+ /*
+ * No need to try combinations of local and remote addresses
+ * of different families.
+ */
- /*
- * Attempt to connect to the remote socket.
- */
+ if (myaddrPtr->ai_family != addrPtr->ai_family) {
+ continue;
+ }
- if (connect(sock, (SOCKADDR *) &sockaddr,
- sizeof(SOCKADDR_IN)) == SOCKET_ERROR) {
- TclWinConvertWSAError((DWORD) WSAGetLastError());
- if (Tcl_GetErrno() != EWOULDBLOCK) {
- goto error;
- }
+ sock = socket(myaddrPtr->ai_family, SOCK_STREAM, 0);
+ if (sock == INVALID_SOCKET) {
+ TclWinConvertError((DWORD) WSAGetLastError());
+ continue;
+ }
- /*
- * The connection is progressing in the background.
- */
+ /*
+ * Win-NT has a misfeature that sockets are inherited in child
+ * processes by default. Turn off the inherit bit.
+ */
+
+ SetHandleInformation((HANDLE) sock, HANDLE_FLAG_INHERIT, 0);
- asyncConnect = 1;
+ /*
+ * Set kernel space buffering
+ */
+
+ TclSockMinimumBuffers((void *) sock, TCP_BUFFER_SIZE);
+
+ /*
+ * Try to bind to a local port.
+ */
+
+ if (bind(sock, myaddrPtr->ai_addr, myaddrPtr->ai_addrlen)
+ == SOCKET_ERROR) {
+ TclWinConvertError((DWORD) WSAGetLastError());
+ goto looperror;
+ }
+ /*
+ * Set the socket into nonblocking mode if the connect should
+ * be done in the background.
+ */
+ if (async && ioctlsocket(sock, (long) FIONBIO, &flag)
+ == SOCKET_ERROR) {
+ TclWinConvertError((DWORD) WSAGetLastError());
+ goto looperror;
+ }
+
+ /*
+ * Attempt to connect to the remote socket.
+ */
+
+ if (connect(sock, addrPtr->ai_addr, addrPtr->ai_addrlen)
+ == SOCKET_ERROR) {
+ TclWinConvertError((DWORD) WSAGetLastError());
+ if (Tcl_GetErrno() != EAGAIN) {
+ goto looperror;
+ }
+
+ /*
+ * The connection is progressing in the background.
+ */
+
+ asyncConnect = 1;
+ }
+ goto connected;
+
+ looperror:
+ if (sock != INVALID_SOCKET) {
+ closesocket(sock);
+ sock = INVALID_SOCKET;
+ }
+ }
}
+ goto error;
+ connected:
/*
* Add this socket to the global list of sockets.
*/
@@ -1066,22 +1357,33 @@ CreateSocket(
}
}
+ error:
+ if (addrlist == NULL) {
+ freeaddrinfo(addrlist);
+ }
+ if (myaddrlist == NULL) {
+ freeaddrinfo(myaddrlist);
+ }
+
/*
* Register for interest in events in the select mask. Note that this
* automatically places the socket into non-blocking mode.
*/
- ioctlsocket(sock, (long) FIONBIO, &flag);
- SendMessage(tsdPtr->hwnd, SOCKET_SELECT, (WPARAM) SELECT, (LPARAM) infoPtr);
+ if (infoPtr != NULL) {
+ ioctlsocket(sock, (long) FIONBIO, &flag);
+ SendMessage(tsdPtr->hwnd, SOCKET_SELECT, (WPARAM) SELECT,
+ (LPARAM) infoPtr);
- return infoPtr;
+ return infoPtr;
+ }
- error:
- TclWinConvertWSAError((DWORD) WSAGetLastError());
if (interp != NULL) {
- Tcl_AppendResult(interp, "couldn't open socket: ",
- Tcl_PosixError(interp), NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "couldn't open socket: %s",
+ (errorMsg ? errorMsg : Tcl_PosixError(interp))));
}
+
if (sock != INVALID_SOCKET) {
closesocket(sock);
}
@@ -1091,78 +1393,6 @@ CreateSocket(
/*
*----------------------------------------------------------------------
*
- * CreateSocketAddress --
- *
- * This function initializes a sockaddr structure for a host and port.
- *
- * Results:
- * 1 if the host was valid, 0 if the host could not be converted to an IP
- * address.
- *
- * Side effects:
- * Fills in the *sockaddrPtr structure.
- *
- *----------------------------------------------------------------------
- */
-
-static int
-CreateSocketAddress(
- LPSOCKADDR_IN sockaddrPtr, /* Socket address */
- const char *host, /* Host. NULL implies INADDR_ANY */
- int port) /* Port number */
-{
- struct hostent *hostent; /* Host database entry */
- struct in_addr addr; /* For 64/32 bit madness */
-
- /*
- * Check that WinSock is initialized; do not call it if not, to prevent
- * system crashes. This can happen at exit time if the exit handler for
- * WinSock ran before other exit handlers that want to use sockets.
- */
-
- if (!SocketsEnabled()) {
- Tcl_SetErrno(EFAULT);
- return 0;
- }
-
- ZeroMemory(sockaddrPtr, sizeof(SOCKADDR_IN));
- sockaddrPtr->sin_family = AF_INET;
- sockaddrPtr->sin_port = htons((unsigned short) (port & 0xFFFF));
- if (host == NULL) {
- addr.s_addr = INADDR_ANY;
- } else {
- addr.s_addr = inet_addr(host);
- if (addr.s_addr == INADDR_NONE) {
- hostent = gethostbyname(host);
- if (hostent != NULL) {
- memcpy(&addr, hostent->h_addr, (size_t) hostent->h_length);
- } else {
-#ifdef EHOSTUNREACH
- Tcl_SetErrno(EHOSTUNREACH);
-#else
-#ifdef ENXIO
- Tcl_SetErrno(ENXIO);
-#endif
-#endif
- return 0; /* Error. */
- }
- }
- }
-
- /*
- * NOTE: On 64 bit machines the assignment below is rumored to not do the
- * right thing. Please report errors related to this if you observe
- * incorrect behavior on 64 bit machines such as DEC Alphas. Should we
- * modify this code to do an explicit memcpy?
- */
-
- sockaddrPtr->sin_addr.s_addr = addr.s_addr;
- return 1; /* Success. */
-}
-
-/*
- *----------------------------------------------------------------------
- *
* WaitForSocketEvent --
*
* Waits until one of the specified events occurs on a socket.
@@ -1185,8 +1415,7 @@ WaitForSocketEvent(
{
int result = 1;
int oldMode;
- ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
- TclThreadDataKeyGet(&dataKey);
+ ThreadSpecificData *tsdPtr = TclThreadDataKeyGet(&dataKey);
/*
* Be sure to disable event servicing so we are truly modal.
@@ -1200,7 +1429,6 @@ WaitForSocketEvent(
SendMessage(tsdPtr->hwnd, SOCKET_SELECT, (WPARAM) UNSELECT,
(LPARAM) infoPtr);
-
SendMessage(tsdPtr->hwnd, SOCKET_SELECT, (WPARAM) SELECT,
(LPARAM) infoPtr);
@@ -1212,7 +1440,7 @@ WaitForSocketEvent(
} else if (infoPtr->readyEvents & events) {
break;
} else if (infoPtr->flags & SOCKET_ASYNC) {
- *errorCodePtr = EWOULDBLOCK;
+ *errorCodePtr = EAGAIN;
result = 0;
break;
}
@@ -1271,19 +1499,18 @@ Tcl_OpenTcpClient(
return NULL;
}
- sprintf(channelName, "sock%" TCL_I_MODIFIER "u", (size_t)infoPtr->socket);
+ sprintf(channelName, "sock%" TCL_I_MODIFIER "u", (size_t) infoPtr->sockets->fd);
infoPtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName,
- (ClientData) infoPtr, (TCL_READABLE | TCL_WRITABLE));
- if (Tcl_SetChannelOption(interp, infoPtr->channel, "-translation",
- "auto crlf") == TCL_ERROR) {
- Tcl_Close((Tcl_Interp *) NULL, infoPtr->channel);
- return (Tcl_Channel) NULL;
- }
- if (Tcl_SetChannelOption(NULL, infoPtr->channel, "-eofchar", "")
- == TCL_ERROR) {
- Tcl_Close((Tcl_Interp *) NULL, infoPtr->channel);
- return (Tcl_Channel) NULL;
+ infoPtr, (TCL_READABLE | TCL_WRITABLE));
+ if (TCL_ERROR == Tcl_SetChannelOption(NULL, infoPtr->channel,
+ "-translation", "auto crlf")) {
+ Tcl_Close(NULL, infoPtr->channel);
+ return NULL;
+ } else if (TCL_ERROR == Tcl_SetChannelOption(NULL, infoPtr->channel,
+ "-eofchar", "")) {
+ Tcl_Close(NULL, infoPtr->channel);
+ return NULL;
}
return infoPtr->channel;
}
@@ -1318,7 +1545,7 @@ Tcl_MakeTcpClientChannel(
return NULL;
}
- tsdPtr = (ThreadSpecificData *)TclThreadDataKeyGet(&dataKey);
+ tsdPtr = TclThreadDataKeyGet(&dataKey);
/*
* Set kernel space buffering and non-blocking.
@@ -1333,12 +1560,11 @@ Tcl_MakeTcpClientChannel(
*/
infoPtr->selectEvents = FD_READ | FD_CLOSE | FD_WRITE;
- SendMessage(tsdPtr->hwnd, SOCKET_SELECT,
- (WPARAM) SELECT, (LPARAM) infoPtr);
+ SendMessage(tsdPtr->hwnd, SOCKET_SELECT, (WPARAM)SELECT, (LPARAM)infoPtr);
- sprintf(channelName, "sock%" TCL_I_MODIFIER "u", (size_t)infoPtr->socket);
+ sprintf(channelName, "sock%" TCL_I_MODIFIER "u", (size_t) infoPtr->sockets->fd);
infoPtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName,
- (ClientData) infoPtr, (TCL_READABLE | TCL_WRITABLE));
+ infoPtr, (TCL_READABLE | TCL_WRITABLE));
Tcl_SetChannelOption(NULL, infoPtr->channel, "-translation", "auto crlf");
return infoPtr->channel;
}
@@ -1389,14 +1615,14 @@ Tcl_OpenTcpServer(
infoPtr->acceptProc = acceptProc;
infoPtr->acceptProcData = acceptProcData;
- sprintf(channelName, "sock%" TCL_I_MODIFIER "u", (size_t)infoPtr->socket);
+ sprintf(channelName, "sock%" TCL_I_MODIFIER "u", (size_t) infoPtr->sockets->fd);
infoPtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName,
- (ClientData) infoPtr, 0);
+ infoPtr, 0);
if (Tcl_SetChannelOption(interp, infoPtr->channel, "-eofchar", "")
== TCL_ERROR) {
- Tcl_Close((Tcl_Interp *) NULL, infoPtr->channel);
- return (Tcl_Channel) NULL;
+ Tcl_Close(NULL, infoPtr->channel);
+ return NULL;
}
return infoPtr->channel;
@@ -1407,8 +1633,9 @@ Tcl_OpenTcpServer(
*
* TcpAccept --
*
- * Accept a TCP socket connection. This is called by SocketEventProc and
- * it in turns calls the registered accept function.
+ * Creates a channel for a newly accepted socket connection. This is
+ * called by SocketEventProc and it in turns calls the registered
+ * accept function.
*
* Results:
* None.
@@ -1421,58 +1648,16 @@ Tcl_OpenTcpServer(
static void
TcpAccept(
- SocketInfo *infoPtr) /* Socket to accept. */
+ TcpFdList *fds, /* Server socket that accepted newSocket. */
+ SOCKET newSocket, /* Newly accepted socket. */
+ address addr) /* Address of new socket. */
{
- SOCKET newSocket;
SocketInfo *newInfoPtr;
- SOCKADDR_IN addr;
- int len;
+ SocketInfo *infoPtr = fds->infoPtr;
+ int len = sizeof(addr);
char channelName[16 + TCL_INTEGER_SPACE];
- ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
- TclThreadDataKeyGet(&dataKey);
-
- /*
- * Accept the incoming connection request.
- */
-
- len = sizeof(SOCKADDR_IN);
-
- newSocket = accept(infoPtr->socket, (SOCKADDR *)&addr,
- &len);
-
- /*
- * Protect access to sockets (acceptEventCount, readyEvents) in socketList
- * by the lock. Fix for SF Tcl Bug 3056775.
- */
- WaitForSingleObject(tsdPtr->socketListLock, INFINITE);
-
- /*
- * Clear the ready mask so we can detect the next connection request. Note
- * that connection requests are level triggered, so if there is a request
- * already pending, a new event will be generated.
- */
-
- if (newSocket == INVALID_SOCKET) {
- infoPtr->acceptEventCount = 0;
- infoPtr->readyEvents &= ~(FD_ACCEPT);
-
- SetEvent(tsdPtr->socketListLock);
- return;
- }
-
- /*
- * It is possible that more than one FD_ACCEPT has been sent, so an extra
- * count must be kept. Decrement the count, and reset the readyEvent bit
- * if the count is no longer > 0.
- */
-
- infoPtr->acceptEventCount--;
-
- if (infoPtr->acceptEventCount <= 0) {
- infoPtr->readyEvents &= ~(FD_ACCEPT);
- }
-
- SetEvent(tsdPtr->socketListLock);
+ char host[NI_MAXHOST], port[NI_MAXSERV];
+ ThreadSpecificData *tsdPtr = TclThreadDataKeyGet(&dataKey);
/*
* Win-NT has a misfeature that sockets are inherited in child processes
@@ -1492,20 +1677,20 @@ TcpAccept(
*/
newInfoPtr->selectEvents = (FD_READ | FD_WRITE | FD_CLOSE);
- SendMessage(tsdPtr->hwnd, SOCKET_SELECT,
- (WPARAM) SELECT, (LPARAM) newInfoPtr);
+ SendMessage(tsdPtr->hwnd, SOCKET_SELECT, (WPARAM) SELECT,
+ (LPARAM) newInfoPtr);
- sprintf(channelName, "sock%" TCL_I_MODIFIER "u", (size_t)newInfoPtr->socket);
+ sprintf(channelName, "sock%" TCL_I_MODIFIER "u", (size_t) newInfoPtr->sockets->fd);
newInfoPtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName,
- (ClientData) newInfoPtr, (TCL_READABLE | TCL_WRITABLE));
+ newInfoPtr, (TCL_READABLE | TCL_WRITABLE));
if (Tcl_SetChannelOption(NULL, newInfoPtr->channel, "-translation",
"auto crlf") == TCL_ERROR) {
- Tcl_Close((Tcl_Interp *) NULL, newInfoPtr->channel);
+ Tcl_Close(NULL, newInfoPtr->channel);
return;
}
if (Tcl_SetChannelOption(NULL, newInfoPtr->channel, "-eofchar", "")
== TCL_ERROR) {
- Tcl_Close((Tcl_Interp *) NULL, newInfoPtr->channel);
+ Tcl_Close(NULL, newInfoPtr->channel);
return;
}
@@ -1514,8 +1699,10 @@ TcpAccept(
*/
if (infoPtr->acceptProc != NULL) {
- (infoPtr->acceptProc) (infoPtr->acceptProcData, newInfoPtr->channel,
- inet_ntoa(addr.sin_addr), ntohs(addr.sin_port));
+ getnameinfo(&(addr.sa), len, host, sizeof(host), port, sizeof(port),
+ NI_NUMERICHOST|NI_NUMERICSERV);
+ infoPtr->acceptProc(infoPtr->acceptProcData, newInfoPtr->channel,
+ host, atoi(port));
}
}
@@ -1543,11 +1730,10 @@ TcpInputProc(
int toRead, /* Maximum number of bytes to read. */
int *errorCodePtr) /* Where to store error codes. */
{
- SocketInfo *infoPtr = (SocketInfo *) instanceData;
+ SocketInfo *infoPtr = instanceData;
int bytesRead;
DWORD error;
- ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
- TclThreadDataKeyGet(&dataKey);
+ ThreadSpecificData *tsdPtr = TclThreadDataKeyGet(&dataKey);
*errorCodePtr = 0;
@@ -1591,7 +1777,8 @@ TcpInputProc(
while (1) {
SendMessage(tsdPtr->hwnd, SOCKET_SELECT,
(WPARAM) UNSELECT, (LPARAM) infoPtr);
- bytesRead = recv(infoPtr->socket, buf, toRead, 0);
+ /* single fd operation: this proc is only called for a connected socket. */
+ bytesRead = recv(infoPtr->sockets->fd, buf, toRead, 0);
infoPtr->readyEvents &= ~(FD_READ);
/*
@@ -1634,7 +1821,7 @@ TcpInputProc(
*/
if ((infoPtr->flags & SOCKET_ASYNC) || (error != WSAEWOULDBLOCK)) {
- TclWinConvertWSAError(error);
+ TclWinConvertError(error);
*errorCodePtr = Tcl_GetErrno();
bytesRead = -1;
break;
@@ -1651,8 +1838,7 @@ TcpInputProc(
}
}
- SendMessage(tsdPtr->hwnd, SOCKET_SELECT,
- (WPARAM) SELECT, (LPARAM) infoPtr);
+ SendMessage(tsdPtr->hwnd, SOCKET_SELECT, (WPARAM)SELECT, (LPARAM)infoPtr);
return bytesRead;
}
@@ -1681,11 +1867,10 @@ TcpOutputProc(
int toWrite, /* Maximum number of bytes to write. */
int *errorCodePtr) /* Where to store error codes. */
{
- SocketInfo *infoPtr = (SocketInfo *) instanceData;
+ SocketInfo *infoPtr = instanceData;
int bytesWritten;
DWORD error;
- ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
- TclThreadDataKeyGet(&dataKey);
+ ThreadSpecificData *tsdPtr = TclThreadDataKeyGet(&dataKey);
*errorCodePtr = 0;
@@ -1713,7 +1898,8 @@ TcpOutputProc(
SendMessage(tsdPtr->hwnd, SOCKET_SELECT,
(WPARAM) UNSELECT, (LPARAM) infoPtr);
- bytesWritten = send(infoPtr->socket, buf, toWrite, 0);
+ /* single fd operation: this proc is only called for a connected socket. */
+ bytesWritten = send(infoPtr->sockets->fd, buf, toWrite, 0);
if (bytesWritten != SOCKET_ERROR) {
/*
* Since Windows won't generate a new write event until we hit an
@@ -1739,12 +1925,12 @@ TcpOutputProc(
if (error == WSAEWOULDBLOCK) {
infoPtr->readyEvents &= ~(FD_WRITE);
if (infoPtr->flags & SOCKET_ASYNC) {
- *errorCodePtr = EWOULDBLOCK;
+ *errorCodePtr = EAGAIN;
bytesWritten = -1;
break;
}
} else {
- TclWinConvertWSAError(error);
+ TclWinConvertError(error);
*errorCodePtr = Tcl_GetErrno();
bytesWritten = -1;
break;
@@ -1761,8 +1947,7 @@ TcpOutputProc(
}
}
- SendMessage(tsdPtr->hwnd, SOCKET_SELECT,
- (WPARAM) SELECT, (LPARAM) infoPtr);
+ SendMessage(tsdPtr->hwnd, SOCKET_SELECT, (WPARAM)SELECT, (LPARAM)infoPtr);
return bytesWritten;
}
@@ -1791,9 +1976,9 @@ TcpSetOptionProc(
const char *value) /* New value for option. */
{
#ifdef TCL_FEATURE_KEEPALIVE_NAGLE
- SocketInfo *infoPtr;
+ SocketInfo *infoPtr = instanceData;
SOCKET sock;
-#endif
+#endif /*TCL_FEATURE_KEEPALIVE_NAGLE*/
/*
* Check that WinSock is initialized; do not call it if not, to prevent
@@ -1803,14 +1988,15 @@ TcpSetOptionProc(
if (!SocketsEnabled()) {
if (interp) {
- Tcl_AppendResult(interp, "winsock is not initialized", NULL);
+ Tcl_SetObjResult(interp, Tcl_NewStringObj(
+ "winsock is not initialized", -1));
}
return TCL_ERROR;
}
#ifdef TCL_FEATURE_KEEPALIVE_NAGLE
- infoPtr = (SocketInfo *) instanceData;
- sock = infoPtr->socket;
+ #error "TCL_FEATURE_KEEPALIVE_NAGLE not reviewed for whether to treat infoPtr->sockets as single fd or list"
+ sock = infoPtr->sockets->fd;
if (!strcasecmp(optionName, "-keepalive")) {
BOOL val = FALSE;
@@ -1825,10 +2011,11 @@ TcpSetOptionProc(
rtn = setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE,
(const char *) &val, sizeof(BOOL));
if (rtn != 0) {
- TclWinConvertWSAError(WSAGetLastError());
+ TclWinConvertError(WSAGetLastError());
if (interp) {
- Tcl_AppendResult(interp, "couldn't set socket option: ",
- Tcl_PosixError(interp), NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "couldn't set socket option: %s",
+ Tcl_PosixError(interp)));
}
return TCL_ERROR;
}
@@ -1846,10 +2033,11 @@ TcpSetOptionProc(
rtn = setsockopt(sock, IPPROTO_TCP, TCP_NODELAY,
(const char *) &val, sizeof(BOOL));
if (rtn != 0) {
- TclWinConvertWSAError(WSAGetLastError());
+ TclWinConvertError(WSAGetLastError());
if (interp) {
- Tcl_AppendResult(interp, "couldn't set socket option: ",
- Tcl_PosixError(interp), NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "couldn't set socket option: %s",
+ Tcl_PosixError(interp)));
}
return TCL_ERROR;
}
@@ -1892,14 +2080,12 @@ TcpGetOptionProc(
Tcl_DString *dsPtr) /* Where to store the computed value;
* initialized by caller. */
{
- SocketInfo *infoPtr;
- SOCKADDR_IN sockname;
- SOCKADDR_IN peername;
- struct hostent *hostEntPtr;
+ SocketInfo *infoPtr = instanceData;
+ char host[NI_MAXHOST], port[NI_MAXSERV];
SOCKET sock;
- int size = sizeof(SOCKADDR_IN);
size_t len = 0;
- char buf[TCL_INTEGER_SPACE];
+ int reverseDNS = 0;
+#define SUPPRESS_RDNS_VAR "::tcl::unsupported::noReverseDNS"
/*
* Check that WinSock is initialized; do not call it if not, to prevent
@@ -1909,13 +2095,13 @@ TcpGetOptionProc(
if (!SocketsEnabled()) {
if (interp) {
- Tcl_AppendResult(interp, "winsock is not initialized", NULL);
+ Tcl_SetObjResult(interp, Tcl_NewStringObj(
+ "winsock is not initialized", -1));
}
return TCL_ERROR;
}
- infoPtr = (SocketInfo *) instanceData;
- sock = (int) infoPtr->socket;
+ sock = infoPtr->sockets->fd;
if (optionName != NULL) {
len = strlen(optionName);
}
@@ -1927,40 +2113,40 @@ TcpGetOptionProc(
int ret;
optlen = sizeof(int);
- ret = TclWinGetSockOpt((int)sock, SOL_SOCKET, SO_ERROR,
+ ret = TclWinGetSockOpt(sock, SOL_SOCKET, SO_ERROR,
(char *)&err, &optlen);
if (ret == SOCKET_ERROR) {
err = WSAGetLastError();
}
if (err) {
- TclWinConvertWSAError(err);
+ TclWinConvertError(err);
Tcl_DStringAppend(dsPtr, Tcl_ErrnoMsg(Tcl_GetErrno()), -1);
}
return TCL_OK;
}
+ if (interp != NULL && Tcl_GetVar(interp, SUPPRESS_RDNS_VAR, 0) != NULL) {
+ reverseDNS = NI_NUMERICHOST;
+ }
+
if ((len == 0) || ((len > 1) && (optionName[1] == 'p') &&
(strncmp(optionName, "-peername", len) == 0))) {
- if (getpeername(sock, (LPSOCKADDR) &peername, &size) == 0) {
+ address peername;
+ socklen_t size = sizeof(peername);
+
+ if (getpeername(sock, (LPSOCKADDR) &(peername.sa), &size) == 0) {
if (len == 0) {
Tcl_DStringAppendElement(dsPtr, "-peername");
Tcl_DStringStartSublist(dsPtr);
}
- Tcl_DStringAppendElement(dsPtr, inet_ntoa(peername.sin_addr));
- if (peername.sin_addr.s_addr == 0) {
- hostEntPtr = NULL;
- } else {
- hostEntPtr = gethostbyaddr((char *) &(peername.sin_addr),
- sizeof(peername.sin_addr), AF_INET);
- }
- if (hostEntPtr != NULL) {
- Tcl_DStringAppendElement(dsPtr, hostEntPtr->h_name);
- } else {
- Tcl_DStringAppendElement(dsPtr, inet_ntoa(peername.sin_addr));
- }
- TclFormatInt(buf, ntohs(peername.sin_port));
- Tcl_DStringAppendElement(dsPtr, buf);
+ getnameinfo(&(peername.sa), size, host, sizeof(host),
+ NULL, 0, NI_NUMERICHOST);
+ Tcl_DStringAppendElement(dsPtr, host);
+ getnameinfo(&(peername.sa), size, host, sizeof(host),
+ port, sizeof(port), reverseDNS | NI_NUMERICSERV);
+ Tcl_DStringAppendElement(dsPtr, host);
+ Tcl_DStringAppendElement(dsPtr, port);
if (len == 0) {
Tcl_DStringEndSublist(dsPtr);
} else {
@@ -1975,10 +2161,11 @@ TcpGetOptionProc(
*/
if (len) {
- TclWinConvertWSAError((DWORD) WSAGetLastError());
+ TclWinConvertError((DWORD) WSAGetLastError());
if (interp) {
- Tcl_AppendResult(interp, "can't get peername: ",
- Tcl_PosixError(interp), NULL);
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "can't get peername: %s",
+ Tcl_PosixError(interp)));
}
return TCL_ERROR;
}
@@ -1987,25 +2174,53 @@ TcpGetOptionProc(
if ((len == 0) || ((len > 1) && (optionName[1] == 's') &&
(strncmp(optionName, "-sockname", len) == 0))) {
- if (getsockname(sock, (LPSOCKADDR) &sockname, &size) == 0) {
- if (len == 0) {
- Tcl_DStringAppendElement(dsPtr, "-sockname");
- Tcl_DStringStartSublist(dsPtr);
- }
- Tcl_DStringAppendElement(dsPtr, inet_ntoa(sockname.sin_addr));
- if (sockname.sin_addr.s_addr == 0) {
- hostEntPtr = NULL;
- } else {
- hostEntPtr = gethostbyaddr((char *) &(sockname.sin_addr),
- sizeof(peername.sin_addr), AF_INET);
- }
- if (hostEntPtr != NULL) {
- Tcl_DStringAppendElement(dsPtr, hostEntPtr->h_name);
- } else {
- Tcl_DStringAppendElement(dsPtr, inet_ntoa(sockname.sin_addr));
+ TcpFdList *fds;
+ address sockname;
+ socklen_t size;
+ int found = 0;
+
+ if (len == 0) {
+ Tcl_DStringAppendElement(dsPtr, "-sockname");
+ Tcl_DStringStartSublist(dsPtr);
+ }
+ for (fds = infoPtr->sockets; fds != NULL; fds = fds->next) {
+ sock = fds->fd;
+ size = sizeof(sockname);
+ if (getsockname(sock, &(sockname.sa), &size) >= 0) {
+ int flags = reverseDNS;
+
+ found = 1;
+ getnameinfo(&sockname.sa, size, host, sizeof(host),
+ NULL, 0, NI_NUMERICHOST);
+ Tcl_DStringAppendElement(dsPtr, host);
+
+ /*
+ * We don't want to resolve INADDR_ANY and sin6addr_any; they
+ * can sometimes cause problems (and never have a name).
+ */
+ flags |= NI_NUMERICSERV;
+ if (sockname.sa.sa_family == AF_INET) {
+ if (sockname.sa4.sin_addr.s_addr == INADDR_ANY) {
+ flags |= NI_NUMERICHOST;
+ }
+ } else if (sockname.sa.sa_family == AF_INET6) {
+ if ((IN6_ARE_ADDR_EQUAL(&sockname.sa6.sin6_addr,
+ &in6addr_any)) ||
+ (IN6_IS_ADDR_V4MAPPED(&sockname.sa6.sin6_addr)
+ && sockname.sa6.sin6_addr.s6_addr[12] == 0
+ && sockname.sa6.sin6_addr.s6_addr[13] == 0
+ && sockname.sa6.sin6_addr.s6_addr[14] == 0
+ && sockname.sa6.sin6_addr.s6_addr[15] == 0)) {
+ flags |= NI_NUMERICHOST;
+ }
+ }
+ getnameinfo(&sockname.sa, size, host, sizeof(host),
+ port, sizeof(port), flags);
+ Tcl_DStringAppendElement(dsPtr, host);
+ Tcl_DStringAppendElement(dsPtr, port);
}
- TclFormatInt(buf, ntohs(sockname.sin_port));
- Tcl_DStringAppendElement(dsPtr, buf);
+ }
+ if (found) {
if (len == 0) {
Tcl_DStringEndSublist(dsPtr);
} else {
@@ -2013,9 +2228,9 @@ TcpGetOptionProc(
}
} else {
if (interp) {
- TclWinConvertWSAError((DWORD) WSAGetLastError());
- Tcl_AppendResult(interp, "can't get sockname: ",
- Tcl_PosixError(interp), NULL);
+ TclWinConvertError((DWORD) WSAGetLastError());
+ Tcl_SetObjResult(interp, Tcl_ObjPrintf(
+ "can't get sockname: %s", Tcl_PosixError(interp)));
}
return TCL_ERROR;
}
@@ -2049,8 +2264,7 @@ TcpGetOptionProc(
Tcl_DStringAppendElement(dsPtr, "-nagle");
}
optlen = sizeof(BOOL);
- getsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (char *)&opt,
- &optlen);
+ getsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (char *)&opt, &optlen);
if (opt) {
Tcl_DStringAppendElement(dsPtr, "0");
} else {
@@ -2099,11 +2313,11 @@ TcpWatchProc(
* TCL_READABLE, TCL_WRITABLE and
* TCL_EXCEPTION. */
{
- SocketInfo *infoPtr = (SocketInfo *) instanceData;
+ SocketInfo *infoPtr = instanceData;
/*
* Update the watch events mask. Only if the socket is not a server
- * socket. Fix for SF Tcl Bug #557878.
+ * socket. [Bug 557878]
*/
if (!infoPtr->acceptProc) {
@@ -2122,6 +2336,7 @@ TcpWatchProc(
if (infoPtr->readyEvents & infoPtr->watchEvents) {
Tcl_Time blockTime = { 0, 0 };
+
Tcl_SetMaxBlockTime(&blockTime);
}
}
@@ -2150,9 +2365,9 @@ TcpGetHandleProc(
int direction, /* Not used. */
ClientData *handlePtr) /* Where to store the handle. */
{
- SocketInfo *statePtr = (SocketInfo *) instanceData;
+ SocketInfo *statePtr = instanceData;
- *handlePtr = (ClientData) statePtr->socket;
+ *handlePtr = INT2PTR(statePtr->sockets->fd);
return TCL_OK;
}
@@ -2177,14 +2392,14 @@ SocketThread(
LPVOID arg)
{
MSG msg;
- ThreadSpecificData *tsdPtr = (ThreadSpecificData *)(arg);
+ ThreadSpecificData *tsdPtr = arg;
/*
* Create a dummy window receiving socket events.
*/
- tsdPtr->hwnd = CreateWindow("TclSocket", "TclSocket",
- WS_TILED, 0, 0, 0, 0, NULL, NULL, windowClass.hInstance, arg);
+ tsdPtr->hwnd = CreateWindow(classname, classname, WS_TILED, 0, 0, 0, 0,
+ NULL, NULL, windowClass.hInstance, arg);
/*
* Signalize thread creator that we are done creating the window.
@@ -2248,6 +2463,7 @@ SocketProc(
int event, error;
SOCKET socket;
SocketInfo *infoPtr;
+ TcpFdList *fds = NULL;
ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
#ifdef _WIN64
GetWindowLongPtr(hwnd, GWLP_USERDATA);
@@ -2292,58 +2508,60 @@ SocketProc(
WaitForSingleObject(tsdPtr->socketListLock, INFINITE);
for (infoPtr = tsdPtr->socketList; infoPtr != NULL;
infoPtr = infoPtr->nextPtr) {
- if (infoPtr->socket == socket) {
- /*
- * Update the socket state.
- *
- * A count of FD_ACCEPTS is stored, so if an FD_CLOSE event
- * happens, then clear the FD_ACCEPT count. Otherwise,
- * increment the count if the current event is an FD_ACCEPT.
- */
-
- if (event & FD_CLOSE) {
- infoPtr->acceptEventCount = 0;
- infoPtr->readyEvents &= ~(FD_WRITE|FD_ACCEPT);
- } else if (event & FD_ACCEPT) {
- infoPtr->acceptEventCount++;
- }
-
- if (event & FD_CONNECT) {
+ for (fds = infoPtr->sockets; fds != NULL; fds = fds->next) {
+ if (fds->fd == socket) {
/*
- * The socket is now connected, clear the async connect
- * flag.
+ * Update the socket state.
+ *
+ * A count of FD_ACCEPTS is stored, so if an FD_CLOSE event
+ * happens, then clear the FD_ACCEPT count. Otherwise,
+ * increment the count if the current event is an FD_ACCEPT.
*/
- infoPtr->flags &= ~(SOCKET_ASYNC_CONNECT);
+ if (event & FD_CLOSE) {
+ infoPtr->acceptEventCount = 0;
+ infoPtr->readyEvents &= ~(FD_WRITE|FD_ACCEPT);
+ } else if (event & FD_ACCEPT) {
+ infoPtr->acceptEventCount++;
+ }
- /*
- * Remember any error that occurred so we can report
- * connection failures.
- */
+ if (event & FD_CONNECT) {
+ /*
+ * The socket is now connected, clear the async connect
+ * flag.
+ */
+
+ infoPtr->flags &= ~(SOCKET_ASYNC_CONNECT);
+
+ /*
+ * Remember any error that occurred so we can report
+ * connection failures.
+ */
- if (error != ERROR_SUCCESS) {
- TclWinConvertWSAError((DWORD) error);
- infoPtr->lastError = Tcl_GetErrno();
+ if (error != ERROR_SUCCESS) {
+ TclWinConvertError((DWORD) error);
+ infoPtr->lastError = Tcl_GetErrno();
+ }
}
- }
- if (infoPtr->flags & SOCKET_ASYNC_CONNECT) {
- infoPtr->flags &= ~(SOCKET_ASYNC_CONNECT);
- if (error != ERROR_SUCCESS) {
- TclWinConvertWSAError((DWORD) error);
- infoPtr->lastError = Tcl_GetErrno();
+ if (infoPtr->flags & SOCKET_ASYNC_CONNECT) {
+ infoPtr->flags &= ~(SOCKET_ASYNC_CONNECT);
+ if (error != ERROR_SUCCESS) {
+ TclWinConvertError((DWORD) error);
+ infoPtr->lastError = Tcl_GetErrno();
+ }
+ infoPtr->readyEvents |= FD_WRITE;
}
- infoPtr->readyEvents |= FD_WRITE;
- }
- infoPtr->readyEvents |= event;
+ infoPtr->readyEvents |= event;
- /*
- * Wake up the Main Thread.
- */
+ /*
+ * Wake up the Main Thread.
+ */
- SetEvent(tsdPtr->readyEvent);
- Tcl_ThreadAlert(tsdPtr->threadId);
- break;
+ SetEvent(tsdPtr->readyEvent);
+ Tcl_ThreadAlert(tsdPtr->threadId);
+ break;
+ }
}
}
SetEvent(tsdPtr->socketListLock);
@@ -2351,15 +2569,18 @@ SocketProc(
case SOCKET_SELECT:
infoPtr = (SocketInfo *) lParam;
- if (wParam == SELECT) {
- WSAAsyncSelect(infoPtr->socket, hwnd,
- SOCKET_MESSAGE, infoPtr->selectEvents);
- } else {
- /*
- * Clear the selection mask
- */
+ for (fds = infoPtr->sockets; fds != NULL; fds = fds->next) {
+ infoPtr = (SocketInfo *) lParam;
+ if (wParam == SELECT) {
+ WSAAsyncSelect(fds->fd, hwnd,
+ SOCKET_MESSAGE, infoPtr->selectEvents);
+ } else {
+ /*
+ * Clear the selection mask
+ */
- WSAAsyncSelect(infoPtr->socket, hwnd, 0, 0);
+ WSAAsyncSelect(fds->fd, hwnd, 0, 0);
+ }
}
break;
@@ -2414,16 +2635,16 @@ InitializeHostName(
int *lengthPtr,
Tcl_Encoding *encodingPtr)
{
- WCHAR wbuf[MAX_COMPUTERNAME_LENGTH + 1];
- DWORD length = sizeof(wbuf) / sizeof(WCHAR);
+ TCHAR tbuf[MAX_COMPUTERNAME_LENGTH + 1];
+ DWORD length = MAX_COMPUTERNAME_LENGTH + 1;
Tcl_DString ds;
- if ((*tclWinProcs->getComputerNameProc)(wbuf, &length) != 0) {
+ if (GetComputerName(tbuf, &length) != 0) {
/*
* Convert string from native to UTF then change to lowercase.
*/
- Tcl_UtfToLower(Tcl_WinTCharToUtf((TCHAR *) wbuf, -1, &ds));
+ Tcl_UtfToLower(Tcl_WinTCharToUtf(tbuf, -1, &ds));
} else {
Tcl_DStringInit(&ds);
@@ -2448,7 +2669,7 @@ InitializeHostName(
*encodingPtr = Tcl_GetEncoding(NULL, "utf-8");
*lengthPtr = Tcl_DStringLength(&ds);
- *valuePtr = ckalloc((unsigned int) (*lengthPtr)+1);
+ *valuePtr = ckalloc((*lengthPtr) + 1);
memcpy(*valuePtr, Tcl_DStringValue(&ds), (size_t)(*lengthPtr)+1);
Tcl_DStringFree(&ds);
}
@@ -2473,8 +2694,12 @@ InitializeHostName(
*/
int
-TclWinGetSockOpt(SOCKET s, int level, int optname, char *optval,
- int *optlen)
+TclWinGetSockOpt(
+ SOCKET s,
+ int level,
+ int optname,
+ char *optval,
+ int *optlen)
{
/*
* Check that WinSock is initialized; do not call it if not, to prevent
@@ -2490,7 +2715,11 @@ TclWinGetSockOpt(SOCKET s, int level, int optname, char *optval,
}
int
-TclWinSetSockOpt(SOCKET s, int level, int optname, const char *optval,
+TclWinSetSockOpt(
+ SOCKET s,
+ int level,
+ int optname,
+ const char *optval,
int optlen)
{
/*
@@ -2507,7 +2736,8 @@ TclWinSetSockOpt(SOCKET s, int level, int optname, const char *optval,
}
char *
-TclpInetNtoa(struct in_addr addr)
+TclpInetNtoa(
+ struct in_addr addr)
{
/*
* Check that WinSock is initialized; do not call it if not, to prevent
@@ -2562,7 +2792,7 @@ TcpThreadActionProc(
int action)
{
ThreadSpecificData *tsdPtr;
- SocketInfo *infoPtr = (SocketInfo *) instanceData;
+ SocketInfo *infoPtr = instanceData;
int notifyCmd;
if (action == TCL_CHANNEL_THREAD_INSERT) {