完美實現 Windows 下網路通訊

標籤：.com   伺服器端   圖片   inet_ntoa   資料   cte   檔案傳輸   技術分享   winsock   

編譯環境：DEV C++配置編譯器

Windows 下 實現 Socket 編譯需要 ws2_32.lib 這個庫的支撐，所以我們編譯前應該配置下編譯器，具體配置步驟如下：

Tools -> Compiler Options

加入 -l 連結，：

實現的功能

伺服器端與用戶端可以互相自由給對方發送訊息，無需在意接收與發送的順序（利用線程實現）！可以實現加法運算。如需其它的功能，可以自行補充，如：實現四則運算、檔案傳輸等。

伺服器程式

/*    Name: TCP Server     Copyright: -lws2_32    Author: Lance#    Date: 18/05/18    Description: TCP Server */#include <stdio.h>    #include <winsock2.h> #include <windows.h>#include <string.h>#define PORT        8080  #define BUFSIZE     1024/* 用戶端Socket與發送緩衝 */SOCKET client;unsigned char SendBuf[BUFSIZE+1];enum{    NoConnection,    Connected,}LinkStatus;/* 用戶端串連狀態監控線程 */DWORD WINAPI print_message(LPVOID arg){    while(1){        if(!LinkStatus){            printf("    等待用戶端串連 .... \r\n");            sleep(1);        }    }}/* 伺服器發送訊息線程 */DWORD WINAPI send_message(LPVOID arg){       while(1){        memset(SendBuf, 0, 1024);         fgets(SendBuf, 1024, stdin);        send(client, SendBuf, 1024, 0);    }} int main(int argc, char* argv[]){    WSADATA wsaData;    struct sockaddr_in sin_addr;    struct sockaddr_in remoteAddr;    unsigned char recvData[BUFSIZE+1];    int nAddrlen = sizeof(remoteAddr);        unsigned int num_l, num_r;    unsigned char sum_buf[100] = {0};        /* 線程標識 */    HANDLE pthread;        /* 啟動 WSA */    WORD sockVersion = MAKEWORD(2, 2);    if (WSAStartup(sockVersion, &wsaData)){        perror("WSA boot failed!");        return -1;    }    /* 建立服務端通訊端 */    SOCKET server = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);    if (server == INVALID_SOCKET){        perror("socket error!");        return -1;    }    /* 配置 sin_addr */    sin_addr.sin_family = AF_INET;    sin_addr.sin_port = htons(PORT);    /* 可監聽任意的地址 */    sin_addr.sin_addr.S_un.S_addr = INADDR_ANY;     /* 監聽指定的地址 *///    sin_addr.sin_addr.S_un.S_addr = inet_addr("192.168.1.149");         /* 綁定 */    if (bind(server, (LPSOCKADDR)&sin_addr, sizeof(sin_addr)) == SOCKET_ERROR){        perror("bind error!");        return -1;    }    /* 監聽 */    if (listen(server, 100) == SOCKET_ERROR){        perror("listen error!");        return -1;    }        puts("伺服器成功啟動");         /* 建立狀態線程 */    CreateThread(NULL,0,print_message,NULL,0,NULL);    /* 建立訊息線程 */    pthread = CreateThread(NULL,0,send_message,NULL,0,NULL);    while (1)    {           LinkStatus = NoConnection;        client = accept(server, (SOCKADDR *)&remoteAddr, &nAddrlen);        LinkStatus = Connected;                if (client == INVALID_SOCKET)        {            perror("accept error!");            continue;        }                printf("用戶端：%s 已串連\r\n", inet_ntoa(remoteAddr.sin_addr));        while(1){            /* 資料接收 */            memset(recvData, 0, sizeof(recvData));            int ret = recv(client, recvData, 1024, 0);            if (ret > 0){                printf("Recv:   %s", recvData);                /* 實現加法運算，用戶端發來  "%d + %d =" 形式的資料後，將結果返回至用戶端 */                if(sscanf(recvData, "%d + %d =", &num_l, &num_r) == 2){                    sprintf(sum_buf, "%d + %d ,sum is %d", num_l, num_r, num_l + num_r);                    send(client, sum_buf, sizeof(sum_buf), 0);                    memset(sum_buf, 0, sizeof(sum_buf));                }            }else                /* 用戶端異常則斷開當前串連 */                goto Reconnect;                            /* 用戶端要求退出的話則斷開當前串連 */            if(!strncmp(recvData, "quit", 4))                goto Reconnect;        }            Reconnect:        closesocket(client);        puts("*** 用戶端已斷開");    }    /* 關閉伺服器通訊端 */    closesocket(server);     WSACleanup();        return 0;}

用戶端程式

/*    Name: TCP Client     Copyright: -lws2_32    Author: Lance#    Date: 18/05/18    Description: TCP Client*/#include <stdio.h>  #include <winsock2.h>  #include <Windows.h>  #include <string.h>  #define PORT        8080  #define BUFSIZE     1024unsigned char recvData[BUFSIZE+1] = {0};  /* 線程標識 */HANDLE pthread;DWORD WINAPI recv_message(LPVOID arg){    int res;        while(1){        memset(recvData, 0, 1024);         res = recv((SOCKET)arg, recvData, 1024, 0);        if(res > 0)            printf("Recv:   %s", recvData);        else{            printf("*** 伺服器已退出(斷行符號退出程式)");            return 0;        }     }}  int main(int argc, char * argv[])  {      unsigned char SendBuf[BUFSIZE+1] = {0};      WSADATA wsaData;    SOCKADDR_IN addrServ;          if(argc != 2){        puts("argc error");        puts("Usage: <client.exe> <ip addr>");        return -1;    }    /* 啟動 WSA */    WORD sockVersion = MAKEWORD(2, 2);    if (WSAStartup(sockVersion, &wsaData)){        perror("WSA boot failed!");        return -1;    }        /* 建立 socket */    SOCKET client = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);      if (client == INVALID_SOCKET){          perror("socket failed");          return -1;      }          /* 配置 socket */    addrServ.sin_family = AF_INET;      addrServ.sin_port = htons(PORT);      /* 設定管理員 IP */    addrServ.sin_addr.S_un.S_addr = inet_addr(argv[1]);            /* 串連至伺服器 */    int ret = connect(client,(SOCKADDR*)&addrServ,sizeof(SOCKADDR));    if (SOCKET_ERROR == ret){          perror("socket connect failed");          closesocket(client);          WSACleanup();          return -1;      }          /* 建立背景工作執行緒 */    pthread = CreateThread(NULL,0 ,recv_message,(LPVOID)client,0,NULL);        puts("用戶端成功啟動，輸入'quit'關閉用戶端");         while(1)    {        memset(SendBuf,0,sizeof(SendBuf));                  fgets(SendBuf, 1024, stdin);                ret = send(client, SendBuf, 1024, 0);          if (SOCKET_ERROR == ret){              closesocket(client);              exit(0);        }                 /* 用戶端退出 */        if(!strncmp(SendBuf, "quit", 4))            goto Disconnect;    }Disconnect:      closesocket(client);      WSACleanup();          return 0;  }  

運行結果示範

開啟 CMD，進入可執行檔所在目錄

執行 server.exe 運行伺服器;
啟動另一個 CMD，執行 client.exe 127.0.0.1 運行用戶端。

雙方可進行通訊，效果

完美實現 Windows 下網路通訊