linux windows socket通信

//linux下#include <stdio.h>#include <stdlib.h>#include <errno.h>#include <string.h>#include <sys/types.h>#include <netinet/in.h>#include <sys/socket.h>#include <sys/wait.h>#define MYPORT 3333#define BACKLOG 10main(){ int sockfd, new_fd; struct sockaddr_in my_addr; struct sockaddr_in their_addr; int sin_size; if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {    perror("socket");    exit(1); } my_addr.sin_family = AF_INET; my_addr.sin_port = htons(MYPORT); my_addr.sin_addr.s_addr = htonl(INADDR_ANY); bzero(&(my_addr.sin_zero),0); if (bind(sockfd, (struct sockaddr *)&my_addr, sizeof(struct sockaddr))== -1) {    perror("bind");    exit(1); } if (listen(sockfd, BACKLOG) == -1) {    perror("listen");    exit(1); } while(1) { sin_size = sizeof(struct sockaddr_in); if ((new_fd = accept(sockfd, (struct sockaddr *)&their_addr,&sin_size)) == -1) {    perror("accept");    continue; } printf("server: got connection from %s\n",inet_ntoa(their_addr.sin_addr)); if (!fork()) { if (send(new_fd, "Hello, world!\n", 14, 0) == -1) perror("send"); close(new_fd); exit(0); } close(new_fd); while(waitpid(-1,NULL,WNOHANG) > 0); }}

//windows下控制台程序，需要注意加链接库ws2_32.lib#include<Winsock2.h>#include<stdio.h>void main(){ int i; char recvBuffer[255]; WORD wVersionRequested; //typedef unsigned short WORD; 2字节 WSADATA wsaData; //WSADATA 包含了Windows Socket执行的信息。 int err; wsaData.wVersion =MAKEWORD(1,1); //这个宏创建一个被指定变量连接而成的WORD变量。返回一个WORD变量。 //第一个是socket库版本，第二个是取得的版本号。 err=WSAStartup(wVersionRequested,&wsaData); //return 0 if successful if(err!=0){  printf("Call WSAStart ERROR!");  exit(1); }   //终止对WinSock库的使用 //if(LOBYTE(wsaData.wVersion)!=1|| HIBYTE(wsaData.wHighVersion)!=1) //{  //  WSACleanup(); //  exit(0); //} //typedef u_int   SOCKET;//创建用与监听的套接字 SOCKET SocketClient=socket(AF_INET,SOCK_STREAM,0);       //0表示让系统自己选择协议 //定义地址结构体//填入服务器端的ip地址和端口号  SOCKADDR_IN addrSrv;     //转换为TCP/IP network byte order //32bit   addrSrv.sin_addr.S_un.S_addr=inet_addr("192.168.0.206"); //ip 192.168.0.130  addrSrv.sin_family=AF_INET;                        //family address addrSrv.sin_port=htons(3333);                      //16bit端口号 printf("Connect to server...\n"); i=connect(SocketClient,(sockaddr *)&addrSrv,sizeof(SOCKADDR_IN)); //指向要建立连接的数据结构   if(i<0){  printf("%i\n",WSAGetLastError());  printf("连接到192.168.0.130:25000错误!");  exit(1);   }     recv(SocketClient,recvBuffer,255,0); printf("%s\n",recvBuffer);   //send(socketClient,recvBuffer,20,0); closesocket(SocketClient); WSACleanup(); return;}