Linux下基于socket多线程并发通信的实现
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pthread_server.c
/*************************************************** * 文件名：pthread_server.c * 文件描述：创建子线程来接收客户端的数据 ***************************************************/ #include #include #include #include #include #include #include #include void *rec_data(void *fd); int main(int argc,char *argv[]) { int server_sockfd; int *client_sockfd; int server_len, client_len; struct sockaddr_in server_address; struct sockaddr_in client_address; struct sockaddr_in tempaddr; int i,byte; char char_recv,char_send; socklen_t templen; server_sockfd = socket(AF_INET, SOCK_STREAM, 0);//创建套接字 server_address.sin_family = AF_INET; server_address.sin_addr.s_addr = htonl(INADDR_ANY); server_address.sin_port = htons(9734); server_len = sizeof(server_address); bind(server_sockfd, (struct sockaddr *)&server_address, server_len);//绑定套接字 templen = sizeof(struct sockaddr); printf("server waiting for connect/n"); while(1){ pthread_t thread;//创建不同的子线程以区别不同的客户端 client_sockfd = (int *)malloc(sizeof(int)); client_len = sizeof(client_address); *client_sockfd = accept(server_sockfd,(struct sockaddr *)&client_address, (socklen_t *)&client_len); if(-1==*client_sockfd){ perror("accept"); continue; } if(pthread_create(&thread, NULL, rec_data, client_sockfd)!=0)//创建子线程 { perror("pthread_create"); break; } } shutdown(*client_sockfd,2); shutdown(server_sockfd,2); } /***************************************** * 函数名称：rec_data * 功能描述：接受客户端的数据 * 参数列表：fd——连接套接字 * 返回结果：void *****************************************/ void *rec_data(void *fd) { int client_sockfd; int i,byte; char char_recv[100];//存放数据 client_sockfd=*((int*)fd); for(;;) { if((byte=recv(client_sockfd,char_recv,100,0))==-1) { perror("recv"); exit(EXIT_FAILURE); } if(strcmp(char_recv, "exit")==0)//接受到exit时，跳出循环 break; printf("receive from client is %s/n",char_recv);//打印收到的数据 } free(fd); close(client_sockfd); pthread_exit(NULL); } pthread_client.c
/*************************************************** * 文件名：pthread_client.c * 文件描述：创建子线程来接收客户端的数据 ***************************************************/ #include #include #include #include #include #include #include int main(int argc,char *argv[]) { int sockfd; int len; struct sockaddr_in address; int result; int i,byte; char char_send[100] = { 0 }; if((sockfd = socket(AF_INET, SOCK_STREAM, 0))==-1) { perror("socket"); exit(EXIT_FAILURE); } if(argc != 3){ printf("Usage: fileclient /n" );//用法：文件名 服务器IP地址 服务器端口地址 return 0; } if((sockfd = socket(AF_INET,SOCK_STREAM,0)) == -1){ perror("sock"); exit(1); } bzero(&address,sizeof(address)); address.sin_family = AF_INET; address.sin_port = htons(atoi(argv[2])); inet_pton(AF_INET,argv[1],&address.sin_addr); len = sizeof(address); if((result = connect(sockfd, (struct sockaddr *)&address, len))==-1) { perror("connect"); exit(EXIT_FAILURE); } for(;;) { scanf("%s", char_send);//输入发送数据 fflush(stdin);//清除输入缓存 if(strcmp(char_send, "exit")==0){//如果输入exit，跳出循环 if((byte=send(sockfd,char_send,100,0))==-1) { perror("send"); exit(EXIT_FAILURE); } break; } if((byte=send(sockfd,char_send,100,0))==-1) { perror("send"); exit(EXIT_FAILURE); } } close(sockfd); exit(0); } 编译服务器端程序 pthread_server.c ：
$gcc pthread_server.c –o server –lpthread
编译客户端程序 pthread_client.c:
$gcc pthread_client.c –o client
编译在开发板上跑的客户端程序：
$arm-linux-gcc client.c –o arm_client
先启动服务器端的程序 server:
$./server
打开另一个终端，启动客户端的程序 client:
$./client 127.0.0.1 9734
把 arm_client 放到开发板上，启动 arm_client:
$./arm_client 219.222.170.9 9734
结果 :
服务器端：
tongs@tong's-desktop:~/c_c++_program/sock_inet_comm2$ ./server
server waiting for connect
receive from client is client
receive from client is client
receive from client is arm_client
receive from client is arm_client
客户端：
tongs@tong's-desktop:~/c_c++_program/sock_inet_comm2$ ./client 127.0.0.1 9734
client
client
exit
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