Let's take a look at the conflict between my thread and the port number.

Let's take a look at the conflict between my thread and port number-General Linux technology-Linux technology and application information. The following is a detailed description. Why does the server quit when a client is disconnected ..
Int main (int argc, char ** argv)
{
// Socket
Int listenfd; // listen to socket
// Open socket IPV4 TCP
Listenfd = socket (AF_INET, SOCK_STREAM, 0 );
// Define the address structure
Struct sockaddr_in servaddr;
Memset (& servaddr, 0, sizeof (servaddr ));
Servaddr. sin_family = AF_INET;
// Host to network short network byte order-size end
Servaddr. sin_port = htons (9999 );
Servaddr. sin_addr.s_addr = htonl (INADDR_ANY );
// Bind the address
If (bind (listenfd, (struct sockaddr *) & servaddr, sizeof (servaddr) =-1)
{
Printf ("bind error \ n ");
Close (listenfd );
Exit (0 );
}
// Listen
Listen (listenfd, 5); // passive

// Communication
Int clientfd;
Struct sockaddr_in peeraddr;
Int socklen = sizeof (peeraddr );
Memset (& peeraddr, 0, socklen );
// Accept the client
Pthread_t tid1;
While (1)
{
Clientfd = accept (listenfd, (struct sockaddr *) & peeraddr, & socklen );

Pthread_create (& tid1, NULL, pthread, (void *) clientfd );

}
// Communicate with the customer
Pthread_join (tid1, NULL );
Close (listenfd );
Return 0;
}