The server connection is refused. Why?

Author Name Status Posted Time Cindrella Schreiber 3/31/2009 9:53:21 PM Author is Offline Hi every body, I'm refusing connection by server, if the client is on the black list. but i cant find out (in the client code), the serve refused. The WSAECONNREFUSED error never occurs. how it is possible? whats wrong? im sure the server refuse connection. The client code is sent soon. Thanks Cindrella.

Subject Author Status Date Re: The server connection is refused. Why? Cindrella Schreiber 3/31/2009 11:17:13 PM The code: struct sockaddr_in ServerAddress; SOCKET Socket = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP, NULL, 0, WSA_FLAG_OVERLAPPED); if (INVALID_SOCKET == Socket) { ErrorExit("WSASocket error", WSAGetLastError()); return SOCKET_ERROR; //error } WSAEVENT eevent = WSACreateEvent(); WSAEventSelect(Socket, eevent, FD_CONNECT); ZeroMemory((char *) &ServerAddress, sizeof(ServerAddress)); ServerAddress.sin_family = AF_INET; ServerAddress.sin_addr.S_un.S_addr = ulIp; ServerAddress.sin_port = htons(nPortNo); if (SOCKET_ERROR == WSAConnect(Socket, reinterpret_cast<const struct sockaddr *>(&ServerAddress),sizeof(ServerAddress), NULL, NULL, NULL, NULL)) { int iErrCode = WSAGetLastError(); if(iErrCode != WSAEWOULDBLOCK) { closesocket(Socket); ErrorExit("WSAConnect error", iErrCode); return SOCKET_ERROR; //error } } DWORD retCode = WSAWaitForMultipleEvents(1, &eevent, TRUE, INFINITE, FALSE); WSANETWORKEVENTS NetworkEvents; if((retCode != WSA_WAIT_FAILED) && (retCode != WSA_WAIT_TIMEOUT)) { if(WSAEnumNetworkEvents(Socket, eevent, &NetworkEvents) == SOCKET_ERROR) { int iErrCode = WSAGetLastError(); } if((NetworkEvents.lNetworkEvents & FD_CONNECT ) == FD_CONNECT) { int iErrCode = WSAGetLastError(); if(iErrCode == WSAECONNREFUSED) { ErrorExit("Server refuse!", iErrCode); return SOCKET_ERROR; } } } return Socket;  Post Comments Re: Perhaps it is occurring at the router frame... Dender Afukay 3/31/2009 11:18:21 PM Hi Cybdrella, Perhaps it is occurring at the router frame or some other firewall. Have you tested a traceroute?  Post Comments Re: i will try it Cindrella Schreiber 3/31/2009 11:19:09 PM i will try it. its some possibility to fix it? the FD_CONNECT event occurs but WSAECONNREFUSED error not. Post Comments Re: i cant capture packets Cindrella Schreiber 3/31/2009 11:19:48 PM i cant capture packets in wireshark or ethereal because they cant capture localhost packets. i tried to fix it like this http://wiki.wireshark.org/CaptureSetup/Loopback but it didnt fix it Post Comments

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