網(wǎng)絡(luò)編程：我們都應(yīng)該知道服務(wù)端和客戶端C/S模式，下面我們遵循一個(gè)網(wǎng)絡(luò)編程的規(guī)律：

服務(wù)端：socket ——> bind ——> listen ——> accept

客戶端：socket ——> listen

下面就是代碼部分，遵循了上面的規(guī)律，大家不懂的函數(shù)可以百度查看含義

服務(wù)端代碼：

// server.cpp : 此文件包含 "main" 函數(shù)。程序執(zhí)行將在此處開始并結(jié)束。 #include <iostream> #include <winsock.h> #pragma comment(lib,"ws2_32.lib") using namespace std; void initialization(); int main() {//定義長(zhǎng)度變量int send_len = 0;int recv_len = 0;int len = 0;//定義發(fā)送緩沖區(qū)和接受緩沖區(qū)char send_buf[100];char recv_buf[100];//定義服務(wù)端套接字，接受請(qǐng)求套接字 SOCKET s_server;SOCKET s_accept;//服務(wù)端地址客戶端地址 SOCKADDR_IN server_addr;SOCKADDR_IN accept_addr;initialization();//填充服務(wù)端信息server_addr.sin_family = AF_INET;server_addr.sin_addr.S_un.S_addr = htonl(INADDR_ANY);server_addr.sin_port = htons(5010);//創(chuàng)建套接字s_server = socket(AF_INET, SOCK_STREAM, 0);if (bind(s_server, (SOCKADDR*)& server_addr, sizeof(SOCKADDR)) == SOCKET_ERROR) {cout << "套接字綁定失敗！" << endl;WSACleanup();}else {cout << "套接字綁定成功！" << endl;}//設(shè)置套接字為監(jiān)聽狀態(tài)if (listen(s_server, SOMAXCONN) < 0) {cout << "設(shè)置監(jiān)聽狀態(tài)失敗！" << endl;WSACleanup();}else {cout << "設(shè)置監(jiān)聽狀態(tài)成功！" << endl;}cout << "服務(wù)端正在監(jiān)聽連接，請(qǐng)稍候...." << endl;//接受連接請(qǐng)求len = sizeof(SOCKADDR);s_accept = accept(s_server, (SOCKADDR*)& accept_addr, &len);if (s_accept == SOCKET_ERROR) {cout << "連接失敗！" << endl;WSACleanup();return 0;}cout << "連接建立，準(zhǔn)備接受數(shù)據(jù)" << endl;//接收數(shù)據(jù)while (1) {recv_len = recv(s_accept, recv_buf, 100, 0);if (recv_len < 0) {cout << "接受失敗！" << endl;break;}else {cout << "客戶端信息:" << recv_buf << endl;}cout << "請(qǐng)輸入回復(fù)信息:";cin >> send_buf;send_len = send(s_accept, send_buf, 100, 0);if (send_len < 0) {cout << "發(fā)送失敗！" << endl;break;}}//關(guān)閉套接字 closesocket(s_server);closesocket(s_accept);//釋放DLL資源 WSACleanup();return 0; } void initialization() {//初始化套接字庫(kù)WORD w_req = MAKEWORD(2, 2);//版本號(hào) WSADATA wsadata;int err;err = WSAStartup(w_req, &wsadata);if (err != 0) {cout << "初始化套接字庫(kù)失敗！" << endl;}else {cout << "初始化套接字庫(kù)成功！" << endl;}//檢測(cè)版本號(hào)if (LOBYTE(wsadata.wVersion) != 2 || HIBYTE(wsadata.wHighVersion) != 2) {cout << "套接字庫(kù)版本號(hào)不符！" << endl;WSACleanup();}else {cout << "套接字庫(kù)版本正確！" << endl;}//填充服務(wù)端地址信息 }

客戶端代碼

// client.cpp : 此文件包含 "main" 函數(shù)。程序執(zhí)行將在此處開始并結(jié)束。 #include<iostream> #include<winsock.h> #pragma comment(lib,"ws2_32.lib") using namespace std; void initialization(); int main() {//定義長(zhǎng)度變量int send_len = 0;int recv_len = 0;//定義發(fā)送緩沖區(qū)和接受緩沖區(qū)char send_buf[100];char recv_buf[100];//定義服務(wù)端套接字，接受請(qǐng)求套接字 SOCKET s_server;//服務(wù)端地址客戶端地址 SOCKADDR_IN server_addr;initialization();//填充服務(wù)端信息server_addr.sin_family = AF_INET;server_addr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");server_addr.sin_port = htons(5010);//創(chuàng)建套接字s_server = socket(AF_INET, SOCK_STREAM, 0);if (connect(s_server, (SOCKADDR*)& server_addr, sizeof(SOCKADDR)) == SOCKET_ERROR) {cout << "服務(wù)器連接失敗！" << endl;WSACleanup();}else {cout << "服務(wù)器連接成功！" << endl;}//發(fā)送,接收數(shù)據(jù)while (1) {cout << "請(qǐng)輸入發(fā)送信息:";cin >> send_buf;send_len = send(s_server, send_buf, 100, 0);if (send_len < 0) {cout << "發(fā)送失敗！" << endl;break;}recv_len = recv(s_server, recv_buf, 100, 0);if (recv_len < 0) {cout << "接受失敗！" << endl;break;}else {cout << "服務(wù)端信息:" << recv_buf << endl;}}//關(guān)閉套接字 closesocket(s_server);//釋放DLL資源 WSACleanup();return 0; } void initialization() {//初始化套接字庫(kù)WORD w_req = MAKEWORD(2, 2);//版本號(hào) WSADATA wsadata;int err;err = WSAStartup(w_req, &wsadata);if (err != 0) {cout << "初始化套接字庫(kù)失敗！" << endl;}else {cout << "初始化套接字庫(kù)成功！" << endl;}//檢測(cè)版本號(hào)if (LOBYTE(wsadata.wVersion) != 2 || HIBYTE(wsadata.wHighVersion) != 2) {cout << "套接字庫(kù)版本號(hào)不符！" << endl;WSACleanup();}else {cout << "套接字庫(kù)版本正確！" << endl;}//填充服務(wù)端地址信息 }

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轉(zhuǎn)載于:https://www.cnblogs.com/qkqBeer/articles/11012664.html

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