11     let srv = assert_ok!(TcpSocket::new_v4());  in basic_usage_v4()  localVariable
12     assert_ok!(srv.bind(addr));  in basic_usage_v4()
14     let srv = assert_ok!(srv.listen(128));  in basic_usage_v4()  localVariable
17     let addr = srv.local_addr().unwrap();  in basic_usage_v4()
22     let _ = assert_ok!(srv.accept().await);  in basic_usage_v4()
29     let srv = assert_ok!(TcpSocket::new_v6());  in basic_usage_v6()  localVariable
30     assert_ok!(srv.bind(addr));  in basic_usage_v6()
32     let srv = assert_ok!(srv.listen(128));  in basic_usage_v6()  localVariable
35     let addr = srv.local_addr().unwrap();  in basic_usage_v6()
40     let _ = assert_ok!(srv.accept().await);  in basic_usage_v6()
47     let srv = assert_ok!(TcpSocket::new_v4());  in bind_before_connect()  localVariable
48     assert_ok!(srv.bind(any_addr));  in bind_before_connect()
50     let srv = assert_ok!(srv.listen(128));  in bind_before_connect()  localVariable
53     let addr = srv.local_addr().unwrap();  in bind_before_connect()
59     let _ = assert_ok!(srv.accept().await);  in bind_before_connect()