[lwip-devel] [bug #20147] getsockopt() with SO_ERROR option

[Frédéric Bernon]

Follow-up Comment #1, bug #20147 (project lwip):

I think that conn->err is set to an error value (I suppose that err_tcp in
api_msg.c is called, put a trace here to be sure).

But sock->err is not change until next send, recv, etc...

Perhaps you can test to patch sockets.c like this:

    case SO_ERROR:
      if (sock->err==0) {
        sock_set_errno(sock, err_to_errno(conn->err)); /*PATCH*/
      }
      *(int *)optval = sock->err;
      sock->err = 0;

Like this, you should keep the first error. Tell me if you got the trace in
err_tcp, and if just patch is good for you...


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