多程序socket程式設計示例

socket程式設計的基礎函式使用請自查詢，本文只給出在linux gcc可編譯執行的socket通訊的伺服器程式與客戶端程式。

**如下：server端

#include #include #include #include #include //signal

#include //socket
#include //sockaddr_in
#include #include //memset
const int buff_size=10;
void process(int client_fd,int cmd)
send(client_fd,"ok",buff_size,0);
}int main(void) 
if (bind(server_fd,(struct sockaddr *)&my_addr,sizeof(struct sockaddr))<0)
listen(server_fd,5);
puts("now server begin listening ,the listen queue len is5");
signal(sigcld,sig_ign);     //ignore teh detail of the child process exit
int client_len = sizeof(remote_addr);
while(1)
if( (pid = fork())== 0)            //child
if(pid)                    //parent
}close(server_fd);
return exit_success;
}#include #include #include #include #include //signal
#include //socket
#include //sockaddr_in
#include #include //memset
const int buff_size=10;
int main(void) 
if(connect(client_sockfd,(struct sockaddr *)&remote_addr,sizeof(struct sockaddr))<0)
printf("connected to server\n");
len=recv(client_sockfd,buf,bufsiz,0);//接收伺服器端資訊
buf[len]='/0';
printf("received %s\n",buf); //列印伺服器端資訊
puts("please input cmd");
scanf("%d",&cmd);
len=send(client_sockfd,&cmd,4,0);
len=recv(client_sockfd,buf,buff_size,0);
buf[len]='/0';
printf("received %s\n",buf); //列印伺服器端資訊
close(client_sockfd);//關閉套接字
return 0;
}



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