基于TCP协议下的Linux网络编程的服务器端和客户端.doc

基于TCP协议下的Linux网络编程的服务器端和客户端客户端：Client.c/* * *Name : Linux Client * *Date : 2014-11-10 * *Author : marksman * *Aim : Linux Client can send and receive * * message. * * */#include #include #include #include #include #include int main(int argc,char *argv)int socketfd,receive_socket;struct sockaddr_in s_add,c_add;unsigned short portnum = 0x22B8;int len;char buf100;/* *Create the socket */if(socketfd=socket(AF_INET,SOCK_STREAM,0)0)printf(Socket create error! n);exit(1);/* *set the address format */bzero(&s_add,sizeof(struct sockaddr_in);s_add.sin_family = AF_INET;s_add.sin_addr.s_addr = inet_addr(127.0.0.1);/change the string to 32-bit internet byte.s_add.sin_port=htons(portnum);if (connect(socketfd,(struct sockaddr *)(&s_add),sizeof(struct sockaddr)0)printf(Connect failure!n);return -1;elseprintf(Connect Success!n);/* *Using the loop to send and receive the message. */while(1)memset(buf,0,100);printf(Input message to send: );fgets(buf,100,stdin);len=send(socketfd,buf,strlen(buf)-1,0);if(len0)printf(send error!n);exit(1);else printf(Send Success! send is : %s n,buf);memset(buf,0,100);len=recv(socketfd,buf,100,0);if(len0)printf(recv error!n);exit(1);else if(0 = len)printf(client quit!n);exit(1);elseprintf(receive message is : %sn,buf);printf(-n);close(socketfd);服务器端：Server.c/* * *Name : Linux Server * *Date : 2014-11-10 * *Author : marksman * *Aim : Linux Server can send and receive * * message.It is atom system about * * Instant Messaging system. * * */#include #include #include #include #include #include #include int main(int argc,char *argv)int socketfd_listen,socketfd_connect;struct sockaddr_in server_addr,client_addr;unsigned short portnum = 0x22B8;int len ;char buf100;/* *Create the socket */if(socketfd_listen=socket(AF_INET,SOCK_STREAM,0)0)printf(Socket create error! n);exit(1);/* *set the address format */bzero(&server_addr,sizeof(struct sockaddr_in);server_addr.sin_family=AF_INET;server_addr.sin_addr.s_addr=htonl(INADDR_ANY);server_addr.sin_port=htons(portnum);if(bind(socketfd_listen,(struct sockaddr *)(&server_addr),sizeof(struct sockaddr)0)printf(bind failure!n);return -1;printf(bind Success!n);if(listen(socketfd_listen,5)0)printf(Listen failure!n);return -1;len=sizeof(struct sockaddr);socketfd_connect = accept(socketfd_listen, (struct sockaddr *)(&client_addr), &len);if(socketfd_connect0)printf(accept fail !n);return -1;/* *Using the loop to send and receive the message. */while(1)memset(buf,0,100);len=recv(socketfd_connect,buf,100,0);if(len0)printf(recv error!n);exit(1);else if(0 = len)printf(the client quit!n);break;elseprintf(receive message is : %s n,buf);/memset(buf,0,100);/printf(Input message to send : );/fgets(buf,100,stdin);len=send(socketfd_connect,buf,strlen(buf)-1,0);if(len0)printf(Send error!n);exit(1);else printf(Send succeed send : %s n,buf);printf(-n);close(socketfd_listen);close(sock