fix http_connector

1. use ipv4 first when connect to http server.
2. allow redirect to url like: http://tcp://p.com:11010
3. dns should also use long timeout

easytier/src/connector/manual.rs

@@ -365,9 +365,12 @@ impl ManualConnectorManager {
             "cannot get ip from url"
         )));
         for ip_version in ip_versions {
+            let use_long_timeout = dead_url.starts_with("http")
+                || dead_url.starts_with("srv")
+                || dead_url.starts_with("txt");
             let ret = timeout(
                 // allow http connector to wait longer
-                std::time::Duration::from_secs(if dead_url.starts_with("http") { 20 } else { 2 }),
+                std::time::Duration::from_secs(if use_long_timeout { 20 } else { 2 }),
                 Self::conn_reconnect_with_ip_version(
                     data.clone(),
                     dead_url.clone(),