diff --git a/crates/ruci-tls/src/client.rs b/crates/ruci-tls/src/client.rs
index 747309f..5f16c8e 100644
--- a/crates/ruci-tls/src/client.rs
+++ b/crates/ruci-tls/src/client.rs
@@ -141,9 +141,12 @@ impl Client {
         let new_c = connector
             .connect(
                 ServerName::try_from(
-                    self.server_domain
-                        .clone()
-                        .unwrap_or(a.clone().unwrap_or_default().get_name().unwrap_or_default()),
+                    self.server_domain.clone().unwrap_or(
+                        a.clone()
+                            .unwrap_or_default()
+                            .get_name_or_ip_string()
+                            .unwrap_or_default(),
+                    ),
                 )
                 .expect("domain string to serverName ok"),
                 conn,
diff --git a/rucimp/src/map/native_tls/mod.rs b/rucimp/src/map/native_tls/mod.rs
index 271d4fe..0448a0b 100644
--- a/rucimp/src/map/native_tls/mod.rs
+++ b/rucimp/src/map/native_tls/mod.rs
@@ -18,6 +18,7 @@ use ruci::{
 
 use macro_map::*;
 use tokio_native_tls::{native_tls::Identity, TlsAcceptor, TlsConnector};
+use tracing::debug;
 
 use crate::utils::FileSource;
 
@@ -156,12 +157,19 @@ impl map::Map for Client {
                 TlsConnector::from(b.build().unwrap())
             };
 
+            if self.config.host.is_none() {
+                debug!("host: {:?}", params.a);
+            }
             let r = connector
                 .connect(
-                    self.config
-                        .host
-                        .as_ref()
-                        .unwrap_or(&params.a.clone().unwrap().get_name().unwrap()),
+                    self.config.host.as_ref().unwrap_or(
+                        &params
+                            .a
+                            .clone()
+                            .unwrap_or_default()
+                            .get_name_or_ip_string()
+                            .unwrap_or_default(),
+                    ),
                     conn,
                 )
                 .await;
diff --git a/src/net/addr.rs b/src/net/addr.rs
index 021a11f..4b9f9e4 100644
--- a/src/net/addr.rs
+++ b/src/net/addr.rs
@@ -353,6 +353,20 @@ impl Addr {
             _ => None,
         }
     }
+
+    /// used for get a domain
+    pub fn get_name_or_ip_string(&self) -> Option<String> {
+        let on = self.get_name();
+        if on.is_none() {
+            Some(match &self.addr {
+                NetAddr::Socket(so) => so.ip().to_string(),
+                NetAddr::Name(n, _) => n.clone(),
+                NetAddr::NameAndSocket(_, ip, _) => ip.to_string(),
+            })
+        } else {
+            on
+        }
+    }
     pub fn get_port(&self) -> u16 {
         match &self.addr {
             NetAddr::Name(_, p) => *p,