在TCP套接字连接期间获取对等方重置的连接？

我正在制作一个小型的客户端-服务器应用程序，其中服务器在接受后派生一个子进程，以便在客户端连接到该进程的同时进行多个连接，发送消息并接收响应。以下是我的代码片段：-client.c

字符缓冲区[256];

portno=5001;    
   
   /* Create a socket point */
   sockfd = socket(AF_INET, SOCK_STREAM, 0);
   
   if (sockfd < 0) {
      perror("ERROR opening socket");
      exit(1);
   }
    
   
   bzero((char *) &serv_addr, sizeof(serv_addr));
   serv_addr.sin_family = AF_INET;
   serv_addr.sin_port = htons(portno);
   
   /* Now connect to the server */
   if (connect(sockfd, (struct sockaddr*)&serv_addr, sizeof(serv_addr)) < 0) {
      perror("ERROR connecting");
      exit(1);
   }
   
   /* Now ask for a message from the user, this message
      * will be read by server
   */
while(1)
{   
   printf("Please enter the message: ");
   bzero(buffer,256);
   fgets(buffer,255,stdin);
   /* Send message to the server */
   n = write(sockfd, buffer, strlen(buffer));
   
   if (n < 0) {
      perror("ERROR writing to socket");
      exit(1);
   }
   
   /* Now read server response */
   bzero(buffer,256);
   n = read(sockfd, buffer, 255);
    if(n==0)
    {
      perror("nothing to read");
    }
   
   if (n < 0) {
      perror("ERROR reading from socket");
      exit(1);
   }
    
   printf("%s\n",buffer);
}

--server.c

int main( int argc, char *argv[] ) {
   int sockfd, newsockfd, portno, clilen;
   char buffer[256];
   struct sockaddr_in serv_addr, cli_addr;
   int n, pid;
   
   /* First call to socket() function */
   sockfd = socket(AF_INET, SOCK_STREAM, 0);
   
   if (sockfd < 0) {
      perror("ERROR opening socket");
      exit(1);
   }
   
   /* Initialize socket structure */
   bzero((char *) &serv_addr, sizeof(serv_addr));
   portno = 5001;
   
   serv_addr.sin_family = AF_INET;
   serv_addr.sin_addr.s_addr = INADDR_ANY;
   serv_addr.sin_port = htons(portno);
   
   /* Now bind the host address using bind() call.*/
   if (bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0) {
      perror("ERROR on binding");
      exit(1);
   }
   
   /* Now start listening for the clients, here
      * process will go in sleep mode and will wait
      * for the incoming connection
   */
   
   listen(sockfd,5);
   clilen = sizeof(cli_addr);
   
   while (1) {
      newsockfd = accept(sockfd, (struct sockaddr *)NULL,NULL);
        
      if (newsockfd < 0) {
         perror("ERROR on accept");
         exit(1);
      }
      
      /* Create child process */
      pid = fork();
        
      if (pid < 0) {
         perror("ERROR on fork");
         exit(1);
      }
      


 if (pid == 0) 
 {
     while(1)
     {
     /* This is the client process */
     close(sockfd);
     doprocessing(newsockfd);
   /**  exit(0); **/
     }
 }
      else {
         close(newsockfd);
      }
        
   } /* end of while */
}


void doprocessing (int sock) {
   int n;
   char buffer[256];
   bzero(buffer,256);
   n = read(sock,buffer,255);
       if(n==0)
    {
      perror("nothing to read");
    }
   
   if (n < 0) {
      perror("ERROR reading from socket");
      exit(1);
   }
   
   printf("Here is the message: %s\n",buffer);
   n = write(sock,"I got your message",18);
   
   if (n <= 0) {
      perror("ERROR writing to socket");
      exit(1);
   }
    
}

当我同时运行两者时，O / P如下：

Please enter the message: arjun
I got your message
Please enter the message: gaur
ERROR reading from socket: Connection reset by peer

请帮助。如何解决此问题