fix: update version to 0.4.9 and improve error handling in TcpListener

Author: shenjinti

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "rsipstack"
-version = "0.4.8"
+version = "0.4.9"
 edition = "2021"
 description = "SIP Stack Rust library for building SIP applications"
 license = "MIT"

src/transport/tcp_listener.rs

@@ -38,7 +38,7 @@ impl TcpListenerConnection {
         let listener = TcpListener::bind(self.inner.local_addr.get_socketaddr()?).await?;
         let listener_local_addr = SipAddr {
             r#type: Some(rsip::transport::Transport::Tcp),
-            addr: listener.local_addr().unwrap().into(),
+            addr: listener.local_addr()?.into(),
         };
         tokio::spawn(async move {
             loop {