Remove shutdown calls

src/server.c

@@ -306,7 +306,6 @@ report_addr(int fd)
     if (peer_name != NULL) {
         LOGE("failed to handshake with %s", peer_name);
     }
-    shutdown(fd, SHUT_RDWR);
 }
 
 int
@@ -747,7 +746,6 @@ server_recv_cb(EV_P_ ev_io *w, int revents)
                         }
                     }
                 }
-                shutdown(server->fd, SHUT_RDWR);
                 close_and_free_server(EV_A_ server);
                 return;
             }