Linux下基于socket多线程并发通信的实现

╰+攻爆jí腚メ 2022-04-17 04:13 180阅读 0赞

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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 <sys/types.h>  #include <sys/socket.h>  #include <stdio.h>  #include <netinet/in.h>  #include <arpa/inet.h>  #include <unistd.h>  #include <stdlib.h>  #include <pthread.h>  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 <sys/types.h>  #include <sys/socket.h>  #include <stdio.h>  #include <netinet/in.h>  #include <arpa/inet.h>  #include <unistd.h>  #include <stdlib.h>  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 <address> <port>/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 arm\_client**

**客户端：**

**tongs@tong's-desktop:~/c\_c++\_program/sock\_inet\_comm2$ ./client 127.0.0.1 9734**

**client**

**exit**

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![这里写图片描述][SouthEast]

[http_blog.csdn.net_jiangjunshow]: https://blog.csdn.net/jiangjunshow/article/details/77338485
[SouthEast]: /images/20220417/45f36be623a443eb85c35837e09a5b78.png