add --connect to cli

src/main.rs

@@ -36,6 +36,7 @@ fn main() {
     use hbb_common::log;
     let args = format!(
         "-p, --port-forward=[PORT-FORWARD-OPTIONS] 'Format: remote-id:local-port:remote-port[:remote-host]'
+        -c, --connect=[REMOTE_ID] 'test only'
         -k, --key=[KEY] ''
        -s, --server... 'Start server'",
     );
@@ -83,6 +84,12 @@ fn main() {
             key,
             token,
         );
+    } else if let Some(p) = matches.value_of("connect") {
+        common::test_rendezvous_server();
+        common::test_nat_type();
+        let key = matches.value_of("key").unwrap_or("").to_owned();
+        let token = LocalConfig::get_option("access_token");
+        cli::connect_test(p, key, token);
     } else if let Some(p) = matches.value_of("server") {
         crate::start_server(true);
     }