Windows下C语言的Socket编程例子（TCP和UDP）
刚刚学windows编程，所以想写学习笔记，这是一个简单的Socket程序例子，开发环境是vc6：首先是TCPserver端：
#include "stdafx.h"#include <stdio.h>#include <winsock2.h>#pragma comment(lib, "ws2_32.lib") int main(int argc, char* argv[]){WORD socketVersion = MAKEWORD(2,2);WSADATA wsaData; if(WSAStartup(socketVersion, &wsaData) != 0){return 0;}SOCKET sclient = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);sockaddr_in sin;sin.sin_family = AF_INET;sin.sin_port = htons(8888);sin.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");int len = sizeof(sin);char * sendData = "来自客户端的数据包.\n";sendto(sclient, sendData, strlen(sendData), 0, (sockaddr *)&sin, len);char recvData[255]; int ret = recvfrom(sclient, recvData, 255, 0, (sockaddr *)&sin, &len);if(ret > 0){recvData[ret] = 0x00;printf(recvData);}closesocket(sclient);WSACleanup();return 0;}