diff options
| -rw-r--r-- | win/tclWinSock.c | 146 |
1 files changed, 103 insertions, 43 deletions
diff --git a/win/tclWinSock.c b/win/tclWinSock.c index 036f3b9..ed9fa32 100644 --- a/win/tclWinSock.c +++ b/win/tclWinSock.c @@ -172,7 +172,7 @@ struct TcpState { struct addrinfo *addr; /* Iterator over addrlist. */ struct addrinfo *myaddrlist;/* Local address. */ struct addrinfo *myaddr; /* Iterator over myaddrlist. */ - int status; /* Cache status of async socket. */ + int error; /* Cache status of async socket. */ int cachedBlocking; /* Cache blocking mode of async socket. */ volatile int connectError; /* Async connect error set by notifier thread. * Set by notifier thread, access must be @@ -255,8 +255,7 @@ static LRESULT CALLBACK SocketProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam); static int SocketsEnabled(void); static void TcpAccept(TcpFdList *fds, SOCKET newSocket, address addr); -static int WaitForConnect(TcpState *statePtr, int *errorCodePtr, - int noblock); +static int WaitForConnect(TcpState *statePtr, int *errorCodePtr); static int WaitForSocketEvent(TcpState *statePtr, int events, int *errorCodePtr); static void AddSocketInfoFd(TcpState *statePtr, SOCKET socket); @@ -573,8 +572,13 @@ TcpBlockModeProc( static int WaitForConnect( TcpState *statePtr, /* State of the socket. */ - int *errorCodePtr, /* Where to store errors? */ - int noblock) /* Don't wait, even for sockets in blocking mode */ + int *errorCodePtr) /* Where to store errors? + * A passed null-pointer activates background mode. + * In this case, an eventual error is stored in + * statePtr->error. + * In addition, we do never block and allow a next + * processing cycle to happen. + */ { int result; int oldMode; @@ -605,10 +609,11 @@ WaitForConnect( statePtr->readyEvents &= ~(FD_CONNECT); /* - * For blocking sockets disable async connect - * as we continue now synchoneously + * For blocking sockets and foreground processing + * disable async connect as we continue now synchoneously */ - if ( !(noblock || (statePtr->flags & TCP_ASYNC_SOCKET)) ) { + if ( errorCodePtr != NULL && + ! (statePtr->flags & TCP_ASYNC_SOCKET) ) { CLEAR_BITS(statePtr->flags, TCP_ASYNC_CONNECT); } @@ -624,13 +629,19 @@ WaitForConnect( /* Succesfully connected or async connect restarted */ if (result == TCL_OK) { if ( statePtr->flags & TCP_ASYNC_CONNECT_REENTER_PENDING ) { - *errorCodePtr = EWOULDBLOCK; + if (errorCodePtr != NULL) { + *errorCodePtr = EWOULDBLOCK; + } return -1; } return 0; } /* error case */ - *errorCodePtr = Tcl_GetErrno(); + if (errorCodePtr != NULL) { + *errorCodePtr = Tcl_GetErrno(); + } else { + statePtr->error = Tcl_GetErrno(); + } return -1; } @@ -641,7 +652,11 @@ WaitForConnect( * A non blocking socket waiting for an asyncronous connect * returns directly an error */ - if ( noblock || (statePtr->flags & TCP_ASYNC_SOCKET) ) { + if ( errorCodePtr == NULL ) { + /* Backround operation */ + return -1; + } else if (statePtr->flags & TCP_ASYNC_SOCKET) { + /* foreground operation but non blocking socket */ *errorCodePtr = EWOULDBLOCK; return -1; } @@ -715,7 +730,7 @@ TcpInputProc( * For a non blocking socket return EWOULDBLOCK if connect not terminated */ - if (WaitForConnect(statePtr, errorCodePtr, 0) != 0) { + if (WaitForConnect(statePtr, errorCodePtr) != 0) { return -1; } @@ -844,7 +859,7 @@ TcpOutputProc( * For a non blocking socket return EWOULDBLOCK if connect not terminated */ - if (WaitForConnect(statePtr, errorCodePtr, 0) != 0) { + if (WaitForConnect(statePtr, errorCodePtr) != 0) { return -1; } @@ -1184,7 +1199,7 @@ TcpGetOptionProc( char host[NI_MAXHOST], port[NI_MAXSERV]; SOCKET sock; size_t len = 0; - int errorCode; + int errorCode = 0; int reverseDNS = 0; #define SUPPRESS_RDNS_VAR "::tcl::unsupported::noReverseDNS" @@ -1202,8 +1217,11 @@ TcpGetOptionProc( return TCL_ERROR; } - /* Go one step in async connect */ - WaitForConnect(statePtr, &errorCode, 1); + /* + * Go one step in async connect + * If any error is thrown save it as backround error to report eventually below + */ + WaitForConnect(statePtr, NULL); sock = statePtr->sockets->fd; if (optionName != NULL) { @@ -1216,30 +1234,52 @@ TcpGetOptionProc( /* * Do not return any errors if async connect is running */ - if (! (statePtr->flags & TCP_ASYNC_CONNECT_REENTER_PENDING) ) { - int optlen; - int ret; - DWORD err; + if ( ! (statePtr->flags & TCP_ASYNC_CONNECT_REENTER_PENDING) ) { - /* - * Populater the err Variable with a possix error - */ - optlen = sizeof(int); - ret = TclWinGetSockOpt(sock, SOL_SOCKET, SO_ERROR, - (char *)&err, &optlen); - /* - * The error was not returned directly but should be - * taken from WSA - */ - if (ret == SOCKET_ERROR) { - err = WSAGetLastError(); - } - /* - * Return error message - */ - if (err) { - TclWinConvertError(err); - Tcl_DStringAppend(dsPtr, Tcl_ErrnoMsg(Tcl_GetErrno()), -1); + + if ( statePtr->flags & TCP_ASYNC_CONNECT_FAILED ) { + + /* + * In case of a failed async connect, eventually report the + * connect error only once. + * Do not report the system error, as this comes again and again. + */ + + if ( statePtr->error != 0 ) { + Tcl_DStringAppend(dsPtr, Tcl_ErrnoMsg(statePtr->error), -1); + statePtr->error = 0; + } + + } else { + + /* + * Report an eventual last error of the socket system + */ + + int optlen; + int ret; + DWORD err; + + /* + * Populater the err Variable with a possix error + */ + optlen = sizeof(int); + ret = TclWinGetSockOpt(sock, SOL_SOCKET, SO_ERROR, + (char *)&err, &optlen); + /* + * The error was not returned directly but should be + * taken from WSA + */ + if (ret == SOCKET_ERROR) { + err = WSAGetLastError(); + } + /* + * Return error message + */ + if (err) { + TclWinConvertError(err); + Tcl_DStringAppend(dsPtr, Tcl_ErrnoMsg(Tcl_GetErrno()), -1); + } } } return TCL_OK; @@ -2555,16 +2595,36 @@ SocketEventProc( return 1; } + /* + * Clear flag that (this) event is pending + */ + statePtr->flags &= ~SOCKET_PENDING; - /* Continue async connect if pending and ready */ + /* + * Continue async connect if pending and ready + */ + if ( statePtr->readyEvents & FD_CONNECT ) { - statePtr->readyEvents &= ~(FD_CONNECT); if ( statePtr->flags & TCP_ASYNC_CONNECT_REENTER_PENDING ) { + + /* + * Do one step and save eventual connect error + */ + + SetEvent(tsdPtr->socketListLock); + WaitForConnect(statePtr,NULL); + + } else { + + /* + * No async connect reenter pending. Just clear event. + */ + + statePtr->readyEvents &= ~(FD_CONNECT); SetEvent(tsdPtr->socketListLock); - CreateClientSocket(NULL, statePtr); - return 1; } + return 1; } /* |