service端
#include#include #include #include #include #include #include #include #include #include #define MYPORT 8887#define QUEUE 20#define BUFFER_SIZE 1024int main(){ ///定义sockfd int server_sockfd = socket(AF_INET,SOCK_STREAM, 0); ///定义sockaddr_in struct sockaddr_in server_sockaddr; server_sockaddr.sin_family = AF_INET; server_sockaddr.sin_port = htons(MYPORT); server_sockaddr.sin_addr.s_addr = htonl(INADDR_ANY); ///bind，成功返回0，出错返回-1 if(bind(server_sockfd,(struct sockaddr *)&server_sockaddr,sizeof(server_sockaddr))==-1) { perror("bind"); exit(1); } ///listen，成功返回0，出错返回-1 if(listen(server_sockfd,QUEUE) == -1) { perror("listen"); exit(1); } ///客户端套接字 char buffer[BUFFER_SIZE]; struct sockaddr_in client_addr; socklen_t length = sizeof(client_addr); ///成功返回非负描述字，出错返回-1 int conn = accept(server_sockfd, (struct sockaddr*)&client_addr, &length); if(conn<0) { perror("connect"); exit(1); } while(1) { memset(buffer,0,sizeof(buffer)); int len = recv(conn, buffer, sizeof(buffer),0); if(strcmp(buffer,"exit\n")==0) break; fputs(buffer, stdout); send(conn, buffer, len, 0); } close(conn); close(server_sockfd); return 0;}
client端
#include#include #include #include #include #include #include #include #include #include #define MYPORT 8887#define BUFFER_SIZE 1024int main(){ ///定义sockfd int sock_cli = socket(AF_INET,SOCK_STREAM, 0); ///定义sockaddr_in struct sockaddr_in servaddr; memset(&servaddr, 0, sizeof(servaddr)); servaddr.sin_family = AF_INET; servaddr.sin_port = htons(MYPORT); ///服务器端口 servaddr.sin_addr.s_addr = inet_addr("127.0.0.1"); ///服务器ip ///连接服务器，成功返回0，错误返回-1 if (connect(sock_cli, (struct sockaddr *)&servaddr, sizeof(servaddr)) < 0) { perror("connect"); exit(1); } char sendbuf[BUFFER_SIZE]; char recvbuf[BUFFER_SIZE]; while (fgets(sendbuf, sizeof(sendbuf), stdin) != NULL) { send(sock_cli, sendbuf, strlen(sendbuf),0); ///发送 if(strcmp(sendbuf,"exit\n")==0) break; recv(sock_cli, recvbuf, sizeof(recvbuf),0); ///接收 fputs(recvbuf, stdout); memset(sendbuf, 0, sizeof(sendbuf)); memset(recvbuf, 0, sizeof(recvbuf)); } close(sock_cli); return 0;}
测试：
