以下是来自http://msdn.microsoft.com/en-us/library/windows/desktop/ms737593(v=vs.85).aspx的winsock服务器代码
#undef UNICODE #define WIN32_LEAN_AND_MEAN #include <windows.h> #include <winsock2.h> #include <ws2tcpip.h> #include <stdlib.h> #include <stdio.h> // Need to link with Ws2_32.lib #pragma comment (lib, "Ws2_32.lib") // #pragma comment (lib, "Mswsock.lib") #define DEFAULT_BUFLEN 512 #define DEFAULT_PORT "27015" int __cdecl main(void) { WSADATA wsaData; int iResult; SOCKET ListenSocket = INVALID_SOCKET; SOCKET ClientSocket = INVALID_SOCKET; struct addrinfo *result = NULL; struct addrinfo hints; int iSendResult; char recvbuf[DEFAULT_BUFLEN]; int recvbuflen = DEFAULT_BUFLEN; // Initialize Winsock iResult = WSAStartup(MAKEWORD(2,2), &wsaData); if (iResult != 0) { printf("WSAStartup failed with error: %d\n", iResult); return 1; } ZeroMemory(&hints, sizeof(hints)); hints.ai_family = AF_INET; hints.ai_socktype = SOCK_STREAM; hints.ai_protocol = IPPROTO_TCP; hints.ai_flags = AI_PASSIVE; // Resolve the server address and port iResult = getaddrinfo(NULL, DEFAULT_PORT, &hints, &result); if ( iResult != 0 ) { printf("getaddrinfo failed with error: %d\n", iResult); WSACleanup(); return 1; } // Create a SOCKET for connecting to server ListenSocket = socket(result->ai_family, result->ai_socktype, result->ai_protocol); if (ListenSocket == INVALID_SOCKET) { printf("socket failed with error: %ld\n", WSAGetLastError()); freeaddrinfo(result); WSACleanup(); return 1; } // Setup the TCP listening socket iResult = bind( ListenSocket, result->ai_addr, (int)result->ai_addrlen); if (iResult == SOCKET_ERROR) { printf("bind failed with error: %d\n", WSAGetLastError()); freeaddrinfo(result); closesocket(ListenSocket); WSACleanup(); return 1; } freeaddrinfo(result); iResult = listen(ListenSocket, SOMAXCONN); if (iResult == SOCKET_ERROR) { printf("listen failed with error: %d\n", WSAGetLastError()); closesocket(ListenSocket); WSACleanup(); return 1; } // Accept a client socket ClientSocket = accept(ListenSocket, NULL, NULL); if (ClientSocket == INVALID_SOCKET) { printf("accept failed with error: %d\n", WSAGetLastError()); closesocket(ListenSocket); WSACleanup(); return 1; } // No longer need server socket closesocket(ListenSocket); // Receive until the peer shuts down the connection do { iResult = recv(ClientSocket, recvbuf, recvbuflen, 0); if (iResult > 0) { printf("Bytes received: %d\n", iResult); // Echo the buffer back to the sender iSendResult = send( ClientSocket, recvbuf, iResult, 0 ); if (iSendResult == SOCKET_ERROR) { printf("send failed with error: %d\n", WSAGetLastError()); closesocket(ClientSocket); WSACleanup(); return 1; } printf("Bytes sent: %d\n", iSendResult); } else if (iResult == 0) printf("Connection closing...\n"); else { printf("recv failed with error: %d\n", WSAGetLastError()); closesocket(ClientSocket); WSACleanup(); return 1; } } while (iResult > 0); // shutdown the connection since we're done iResult = shutdown(ClientSocket, SD_SEND); if (iResult == SOCKET_ERROR) { printf("shutdown failed with error: %d\n", WSAGetLastError()); closesocket(ClientSocket); WSACleanup(); return 1; } // cleanup closesocket(ClientSocket); WSACleanup(); return 0; } 当我编译上面的代码
gcc -o服务器server.c -lws_32
I get the following error messages. server.cpp:48:62: error: 'getaddrinfo' was not declared in this scope iResult = getaddrinfo(NULL, DEFAULT_PORT, &hints, &result); ^ server.cpp:59:28: error: 'freeaddrinfo' was not declared in this scope freeaddrinfo(result); ^ server.cpp:68:28: error: 'freeaddrinfo' was not declared in this scope freeaddrinfo(result); ^ server.cpp:74:24: error: 'freeaddrinfo' was not declared in this scope freeaddrinfo(result);
在我看来，winsock API与MinGW不兼容。 有什么办法可以解决这个问题吗？ 我认为这个问题可以通过使用Visual C ++来解决，但是我想用MinGW来完成。 ^
我能够解决这个问题
#define _WIN32_WINNT 0x501