erreur tutoriel Winsock

Question

Nouveau à C++ express, et après suivre le tutoriel de Winsock, obtenant d'innombrables d'erreur. Liez déjà l'inclusion de Windows SDK 7.1 aux propriétés. Qu'est-ce que je rate?

#include <winsock2.h> 
#include <stdio.h> 
#include <stdafx.h> 

#pragma comment(lib, "Ws2_32.lib") 
#ifndef WIN32_LEAN_AND_MEAN 
#define WIN32_LEAN_AND_MEAN 
#endif 

int main(int argc, char **argv) 
{ 
    WSADATA wsaData; 

    SOCKET SendingSocket; 

    // Server/receiver address 

    SOCKADDR_IN   ServerAddr, ThisSenderInfo; 

    // Server/receiver port to connect to 

    unsigned int   Port = 7171; 

    int RetCode; 

    // Be careful with the array bound, provide some checking mechanism... 

    char sendbuf[1024] = "This is a test string from sender"; 

    int BytesSent, nlen; 



    // Initialize Winsock version 2.2 

    WSAStartup(MAKEWORD(2,2), &wsaData); 

    printf("Client: Winsock DLL status is %s.\n", wsaData.szSystemStatus); 



    // Create a new socket to make a client connection. 

    // AF_INET = 2, The Internet Protocol version 4 (IPv4) address family, TCP protocol 

    SendingSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); 

    if(SendingSocket == INVALID_SOCKET) 

    { 

      printf("Client: socket() failed! Error code: %ld\n", WSAGetLastError()); 

      // Do the clean up 

      WSACleanup(); 

      // Exit with error 

      return -1; 

    } 

    else 

      printf("Client: socket() is OK!\n"); 



    // Set up a SOCKADDR_IN structure that will be used to connect 

    // to a listening server on port 5150. For demonstration 

    // purposes, let's assume our server's IP address is 127.0.0.1 or localhost 



    // IPv4 

    ServerAddr.sin_family = AF_INET; 

    // Port no. 

    ServerAddr.sin_port = htons(Port); 

    // The IP address 

    ServerAddr.sin_addr.s_addr = inet_addr("127.0.0.1"); 



    // Make a connection to the server with socket SendingSocket. 

    RetCode = connect(SendingSocket, (SOCKADDR *) &ServerAddr, sizeof(ServerAddr)); 

    if(RetCode != 0) 

    { 

      printf("Client: connect() failed! Error code: %ld\n", WSAGetLastError()); 

      // Close the socket 

      closesocket(SendingSocket); 

      // Do the clean up 

      WSACleanup(); 

      // Exit with error 

      return -1; 

    } 

    else 

    { 

      printf("Client: connect() is OK, got connected...\n"); 

      printf("Client: Ready for sending and/or receiving data...\n"); 

    } 



    // At this point you can start sending or receiving data on 

    // the socket SendingSocket. 



    // Some info on the receiver side... 

    getsockname(SendingSocket, (SOCKADDR *)&ServerAddr, (int *)sizeof(ServerAddr)); 

    printf("Client: Receiver IP(s) used: %s\n", inet_ntoa(ServerAddr.sin_addr)); 

    printf("Client: Receiver port used: %d\n", htons(ServerAddr.sin_port)); 



    // Sends some data to server/receiver... 

    BytesSent = send(SendingSocket, sendbuf, strlen(sendbuf), 0); 



    if(BytesSent == SOCKET_ERROR) 

      printf("Client: send() error %ld.\n", WSAGetLastError()); 

    else 

    { 

      printf("Client: send() is OK - bytes sent: %ld\n", BytesSent); 

      // Some info on this sender side... 

      // Allocate the required resources 

      memset(&ThisSenderInfo, 0, sizeof(ThisSenderInfo)); 

      nlen = sizeof(ThisSenderInfo); 



      getsockname(SendingSocket, (SOCKADDR *)&ThisSenderInfo, &nlen); 

      printf("Client: Sender IP(s) used: %s\n", inet_ntoa(ThisSenderInfo.sin_addr)); 

      printf("Client: Sender port used: %d\n", htons(ThisSenderInfo.sin_port)); 

      printf("Client: Those bytes represent: \"%s\"\n", sendbuf); 

    } 



    if(shutdown(SendingSocket, SD_SEND) != 0) 

      printf("Client: Well, there is something wrong with the shutdown(). 

        The error code: %ld\n", WSAGetLastError()); 

    else 

      printf("Client: shutdown() looks OK...\n"); 

    // When you are finished sending and receiving data on socket SendingSocket, 

    // you should close the socket using the closesocket API. We will 

    // describe socket closure later in the chapter. 

    if(closesocket(SendingSocket) != 0) 

      printf("Client: Cannot close \"SendingSocket\" socket. Error code: %ld\n", WSAGetLastError()); 

    else 

      printf("Client: Closing \"SendingSocket\" socket...\n"); 



    // When your application is finished handling the connection, call WSACleanup. 

    if(WSACleanup() != 0) 

      printf("Client: WSACleanup() failed!...\n"); 

    else 

      printf("Client: WSACleanup() is OK...\n"); 

    return 0; 

} 

journal d'erreur:

1>------ Build started: Project: ws, Configuration: Debug Win32 ------ 
1>Compiling... 
1>ws.cpp 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(1) : warning C4627: '#include <winsock2.h>': skipped when looking for precompiled header use 
1>  Add directive to 'stdafx.h' or rebuild precompiled header 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(7) : error C2065: 'WSADATA' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(7) : error C2146: syntax error : missing ';' before identifier 'wsaData' 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(7) : error C2065: 'wsaData' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(9) : error C2065: 'SOCKET' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(9) : error C2146: syntax error : missing ';' before identifier 'SendingSocket' 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(9) : error C2065: 'SendingSocket' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(13) : error C2065: 'SOCKADDR_IN' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(13) : error C2146: syntax error : missing ';' before identifier 'ServerAddr' 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(13) : error C2065: 'ServerAddr' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(13) : error C2065: 'ThisSenderInfo' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(31) : error C2065: 'wsaData' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(31) : error C3861: 'WSAStartup': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(31) : error C3861: 'MAKEWORD': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(33) : error C2065: 'wsaData' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(33) : error C2228: left of '.szSystemStatus' must have class/struct/union 
1>  type is ''unknown-type'' 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(41) : error C2065: 'SendingSocket' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(41) : error C2065: 'AF_INET' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(41) : error C2065: 'SOCK_STREAM' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(41) : error C2065: 'IPPROTO_TCP' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(41) : error C3861: 'socket': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(43) : error C2065: 'SendingSocket' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(43) : error C2065: 'INVALID_SOCKET' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(47) : error C3861: 'WSAGetLastError': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(51) : error C3861: 'WSACleanup': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(75) : error C2065: 'ServerAddr' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(75) : error C2228: left of '.sin_family' must have class/struct/union 
1>  type is ''unknown-type'' 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(75) : error C2065: 'AF_INET' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(79) : error C2065: 'ServerAddr' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(79) : error C2228: left of '.sin_port' must have class/struct/union 
1>  type is ''unknown-type'' 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(79) : error C3861: 'htons': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(83) : error C2065: 'ServerAddr' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(83) : error C2228: left of '.sin_addr' must have class/struct/union 
1>  type is ''unknown-type'' 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(83) : error C2228: left of '.s_addr' must have class/struct/union 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(83) : error C3861: 'inet_addr': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(89) : error C2065: 'SendingSocket' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(89) : error C2065: 'SOCKADDR' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(89) : error C2059: syntax error : ')' 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(89) : error C3861: 'connect': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(95) : error C3861: 'WSAGetLastError': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(99) : error C2065: 'SendingSocket' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(99) : error C3861: 'closesocket': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(103) : error C3861: 'WSACleanup': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(131) : error C2065: 'SendingSocket' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(131) : error C2065: 'SOCKADDR' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(131) : error C2059: syntax error : ')' 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(133) : error C2065: 'ServerAddr' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(133) : error C2228: left of '.sin_addr' must have class/struct/union 
1>  type is ''unknown-type'' 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(131) : error C3861: 'getsockname': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(133) : error C3861: 'inet_ntoa': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(135) : error C2065: 'ServerAddr' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(135) : error C2228: left of '.sin_port' must have class/struct/union 
1>  type is ''unknown-type'' 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(135) : error C3861: 'htons': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(141) : error C2065: 'SendingSocket' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(141) : error C3861: 'send': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(141) : error C3861: 'strlen': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(145) : error C2065: 'SOCKET_ERROR' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(147) : error C3861: 'WSAGetLastError': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(159) : error C2065: 'ThisSenderInfo' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(159) : error C2065: 'ThisSenderInfo' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(159) : error C2070: ''unknown-type'': illegal sizeof operand 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(159) : error C3861: 'memset': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(161) : error C2065: 'ThisSenderInfo' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(161) : error C2070: ''unknown-type'': illegal sizeof operand 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(165) : error C2065: 'SendingSocket' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(165) : error C2065: 'SOCKADDR' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(165) : error C2059: syntax error : ')' 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(167) : error C2065: 'ThisSenderInfo' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(167) : error C2228: left of '.sin_addr' must have class/struct/union 
1>  type is ''unknown-type'' 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(165) : error C3861: 'getsockname': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(167) : error C3861: 'inet_ntoa': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(169) : error C2065: 'ThisSenderInfo' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(169) : error C2228: left of '.sin_port' must have class/struct/union 
1>  type is ''unknown-type'' 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(169) : error C3861: 'htons': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(177) : error C2065: 'SendingSocket' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(177) : error C2065: 'SD_SEND' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(177) : error C3861: 'shutdown': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(179) : error C2001: newline in constant 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(181) : error C2146: syntax error : missing ')' before identifier 'The' 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(181) : error C2017: illegal escape sequence 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(181) : error C2001: newline in constant 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(193) : error C2065: 'SendingSocket' : undeclared identifier 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(193) : error C3861: 'closesocket': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(195) : error C3861: 'WSAGetLastError': identifier not found 
1>c:\users\wildfire\documents\visual studio 2008\projects\ws\ws\ws.cpp(205) : error C3861: 'WSACleanup': identifier not found 
1>Build log was saved at "file://c:\Users\Wildfire\Documents\Visual Studio 2008\Projects\ws\ws\Debug\BuildLog.htm" 
1>ws - 84 error(s), 1 warning(s) 
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== 

Answer 1

Déplacer #include "stdafx.h" vers le haut. Il ne parvient pas à trouver le fichier d'en-tête précompilé stdafx.h. C'est la première erreur. Lorsque vous utilisez des en-têtes précompilés, le fichier d'en-tête que vous précompilez (dans ce cas, stdafx.h) doit toujours être la première ligne du fichier (les commentaires sont ok).

De plus, cette

#ifndef WIN32_LEAN_AND_MEAN 
#define WIN32_LEAN_AND_MEAN 
#endif 

devrait aller avant l'inclusion winsock2.h. Cela indique au compilateur de ne pas inclure trop de fichiers Windows SDK pour accélérer la compilation. Mettre ceci après #include <winsock2.h> n'a aucun effet.