端口好像没开，虽然在听

Question

My server is not going passed the listening stage, even though my client is trying to run the socket.connect() function in a loop until connection is made. Is something flawed in my server code?

#define PORT 8080
void server()
{
    int serverSocket, newSocket;
    struct sockaddr_in serverAddr;
    struct sockaddr_storage serverStorage;
    socklen_t addr_size;
    int opt = TRUE;

    //Create socket
    serverSocket = socket(PF_INET, SOCK_STREAM, 0);
    if (setsockopt(serverSocket, SOL_SOCKET, SO_REUSEADDR, (char *)&opt, 
        sizeof(opt))<0)
        error("SETSOCKOPT ERROR");

    //Configure setting of the server address struct
    serverAddr.sin_family = AF_INET; 
    serverAddr.sin_addr.s_addr = htonl(INADDR_ANY); 
    serverAddr.sin_port = htons(PORT); 

    //Set all bits of the padding field to 0 
    memset(serverAddr.sin_zero, '\0', sizeof serverAddr.sin_zero);

    //Bind the address struct to the socket 
    bind(serverSocket, (struct sockaddr *) &serverAddr, sizeof(serverAddr));

    //Listen on the socket, with max 40 connection requests queued

    if(listen(serverSocket,40)==0)
      printf("\nListening\n");
    else
      printf("\nError\n");
    pthread_t tid[60];
    int i = 0;
    while(1)
    {
      //Accept call creates a new socket for the incoming connection
      addr_size = sizeof serverStorage;
      printf("HERE");
      newSocket = accept(serverSocket, (struct sockaddr *) &serverStorage, &addr_size);
      //pthread_mutex_lock(&lock);
      //for each client request creates a thread and assign the client request to it to process
      //so the main thread can entertain next request
      int error_thread = pthread_create(&tid[i], NULL, socketThread, (void *)(uintptr_t) newSocket);
      if(  error_thread != 0 )
      {
        printf("\nFailed to create thread, %i\n", error_thread);
        rebootOWASYS();
      }
      else
      {
          printf("\nSOCKET %i CREATED\n", newSocket);
      }

      if( i >= 50)
      {
          i = 0;
          while(i < 50)
          {
              pthread_join(tid[i++],NULL);
          }
          i = 0;
      }
    }
}

The server manages to print "Listening", however, my client is unable to connect (does not reach the "here" print). Trying the nc -zv 10.130.28.130 8080 is not successful, however pinging the server is. My client is looping the socket.connect(10.130.28.130, 8080) as long as no connections is accepted.

def try_connect(address):
    global connected
    global client
    client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    client.settimeout(2)
    try:
        client.connect(address)
        connected = True
    except:
        client.close()
        connected = False

    finally:
        return [client, connected]

Am I missing something obvious?

Answer 1

The first problem I see is trying to call the connect function without two sets of parentheses:

client.connect((addr, port)) # Like that

Maybe you were overthinking it or I'm underthinking it.