Summary of common socket errors

Socket is an intermediate software abstraction layer for communication between the application layer and the TCP/IP protocol family. It is a set of interfaces. In the design mode, Socket is actually a facade mode, which hides the complex TCP/IP protocol family behind the Socket interface. For users, a set of simple interfaces is all, allowing Socket to organize data to meet the specified requirements. protocol. The previous chapters introduced the definition and examples of Socket, the difference between and http, communication, long connection and other technical knowledge. Here we will talk about its use. There are some connection errors that Sockets often encounter.

Common Socket errors are as follows:

1. A network connection error Socket error #11001

means that your computer cannot connect to the server, please Check your Proxy settings and Proxy-related accounts, or temporarily cancel the "Personal Firewall" of your anti-virus software.

2. A network connection error Socket error #11004

It should be a problem with the network connection status. Please check whether the network connection is normal.

3. A network connection error Socket error #10060 Connection Timed Out

means that a timeout error occurred between you and the server. Please check your Proxy related settings and whether the Proxy Server has been SSL 443 port is open.

4. A network connection error Socket error #10061

means that the server is busy and cannot establish a connection with you. Please try again later.

5. A network connection error Socket error #10022

Please go online to update Windows operating system components. Users of Windows NT version 4.0 please download and install Service Pack 5 (inclusive) or above.

6. Internal Server Error appears

The host is busy, please try again later.

7. Socket error #10022 Invalid argument appears during upload.

Please go online to update Windows operating system components (windows update). Users of Windows NT version 4.0 please download and install Service Pack 5 (inclusive) or above.

8. Socket error #10054 Connection reset by peer

The reason is that the connection was interrupted by a firewall or proxy" or because you have installed an ip sharer. Please remove the ip sharer first. If it is lost, directly connect the computer to the adsl line and upload again.

9. Socket error #10057 Connection reset by peer appears during upload.

is a Windows system file and is related to file transfer. So if you delete it, you cannot submit the command, the webpage cannot be downloaded, and you cannot access the Internet

The difference between EPIPE and ECONNRESET

EPIPE and ECONNRESET It is a very common mistake in network programming practice. Both of them occur when the send call error occurs, but what is the difference between them? In short, the difference between the two is whether the local socket has received the FIN sent by the other socket. .

The code is as follows:

static void tcp_reset(struct sock *sk)
{
  switch (sk->sk_state) {
case TCP_SYN_SENT:
  sk->sk_err = ECONNREFUSED;
                break;
        case TCP_CLOSE_WAIT:
                sk->sk_err = EPIPE;
                break;
        case TCP_CLOSE:
                return;
        default:
                sk->sk_err = ECONNRESET;
        }
  
        smp_wmb();
        if (!sock_flag(sk, SOCK_DEAD))
          sk->sk_error_report(sk);
        tcp_done(sk);
}

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