Add new test based on token auth with TLS

src/test/valid_with_token_file.rs

@@ -5,7 +5,7 @@ use crate::tcp_relay_server::server_config::ServerConfig;
 use crate::test::dummy_tcp_sockets::{
     dummy_tcp_client_square_root_requests, wait_for_port, DummyTCPServer,
 };
-use crate::test::{get_port_number, PortsAllocation, LOCALHOST};
+use crate::test::{get_port_number, PortsAllocation, LOCALHOST_IP};
 
 const VALID_TOKEN: &str = "AvalidTOKEN";
 
@@ -49,8 +49,8 @@ async fn valid_with_token_file() {
             // Start client relay
             task::spawn(crate::tcp_relay_client::run_app(ClientConfig {
                 token: Some(VALID_TOKEN.to_string()),
-                relay_url: format!("http://{}:{}", LOCALHOST, port(0)),
-                listen_address: LOCALHOST.to_string(),
+                relay_url: format!("http://{}:{}", LOCALHOST_IP, port(0)),
+                listen_address: LOCALHOST_IP.to_string(),
                 root_certificate: None,
                 ..Default::default()
             }));