基於TCP 實現客戶端之間通訊 1

前段時間學習了基於tcp協議下實現伺服器與乙個客戶端的通訊，伺服器與多個客戶端之間的通訊，

以及客戶端之間的互相通訊。

下面就是我寫的利用tcp和多執行緒技術實現客戶端之間互相通訊的**：

伺服器端：tcpserverb.c

#include #include #include #include #include #include #include #include #include #define port   8888

struct info
;void *myreceive(void *arg)
; int ret;
pthread_detach(pthread_self());
while (1)
if (!strcmp(recvbuf.buf,"bye"))
// printf("recv from client : %s\n", buf);
ret = send(recvbuf.tofd, &recvbuf, sizeof(recvbuf),0);
if (-1 == ret)
memset(&recvbuf, 0, sizeof(recvbuf)); }}
int main()
,i = 0;
char buf[100] = ;
struct sockaddr_in server_addr; //用於存放伺服器本身的資訊，包括自己的port和ip
struct sockaddr_in client_addr; //接受客戶端連線的時候， 用於存放客戶端資訊
pthread_t tid[100] = ;
printf("start server!\n");
sockfd = socket(pf_inet, sock_stream, 0); //建立socket，處理客戶端的連線，不用於傳送資訊
if (-1 == sockfd)
int opt = 1;
setsockopt(sockfd, sol_socket, so_reuseaddr, &opt, sizeof(opt));
memset(&server_addr, 0, sizeof(server_addr));
server_addr.sin_family = pf_inet; //位址族
server_addr.sin_port = port; //指定socket的埠號
server_addr.sin_addr.s_addr = inet_addr("192.168.0.128"); //本機ip
ret = bind(sockfd, (struct sockaddr *)&server_addr, sizeof(server_addr)); //上述資訊繫結到socket
if (-1 == ret)
printf("listening...\n");
ret = listen(sockfd, 5); //監聽，是否有客戶端發起連線
if(-1 == ret) 
while(1)
printf("accept %d , port %d\n", fd[i], client_addr.sin_port);
ret = pthread_create(&tid[i], null, myreceive, (void *)&fd[i]);
if (0 != ret)
i++;
} close(sockfd);
return 0;
}

客戶端：tcpclientb.c

#include #include #include #include #include #include #include #include #define port    8888

struct info
;pthread_t tid[2] = ;
void *send(void *arg)
; int ret;
while (1)
if (!strcmp(sendbuf.buf, "bye"))
memset(&sendbuf, 0, sizeof(sendbuf)); }}
void *recv(void *arg)
; int ret,oldtype;
pthread_setcanceltype(pthread_cancel_asynchronous, &oldtype);
while(1)
printf("\t\t\t%s\n", recvbuf.buf);
memset(&recvbuf, 0, sizeof(recvbuf)); }}
int main()
memset(&server_addr, 0, sizeof(server_addr)); //都是伺服器的訊息
server_addr.sin_family = pf_inet;
server_addr.sin_port = port;
server_addr.sin_addr.s_addr = inet_addr("192.168.0.128"); 
printf("start connecting...\n");
ret = connect(sockfd, (struct sockaddr *)&server_addr, sizeof(server_addr)); //發起連線
if (-1 == ret)
ret = pthread_create(&tid[0], null, send, (void *)&sockfd);
if (0 != ret)
ret = pthread_create(&tid[1], null, recv, (void *)&sockfd);
if (0 != ret)
pthread_join(tid[0], null);
pthread_join(tid[1], null);
close(sockfd);
return 0;
}

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