论坛 › Windows程序设计 › Winsock编程怎么在服务器上配置？

╰☆忝婲雨☆╮ 发表于 2018-8-9 13:48:15

Winsock编程怎么在服务器上配置？

在学习Winsock编程，突然想到一个问题，买的服务器通常是做网站用的，怎么在服务器上配置Winsock服务端呢，不会配置服务端在本机上两个端通信也没用呀？

claws0n 发表于 2018-8-9 13:48:16

校对了一些视频，有一些不一样的地方，但大致结构相同
参考一下。这是给 Winsock Client Server 的
#undef UNICODE

#define WIN32_LEAN_AND_MEAN

// #include <windows.h>   // 这个在 WIN32_LEAN_AND_MEAN 里有被定义了
#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;
    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;
}

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