fix(igd): don't skip port forwarding if local IP address is specified

examples/echo_service.rs

@@ -1,10 +1,7 @@
 use anyhow::{anyhow, bail, Error, Result};
 use bytes::Bytes;
 use qp2p::{Config, Message, QuicP2p};
-use std::{
-    env,
-    net::{IpAddr, Ipv4Addr},
-};
+use std::env;
 use tokio::io::AsyncBufReadExt;
 
 #[tokio::main]

src/endpoint.rs

@@ -96,7 +96,7 @@ impl Endpoint {
     /// such an address cannot be reached and hence not useful.
     async fn public_addr(&self) -> Result<SocketAddr> {
         // Skip port forwarding
-        if self.local_addr.ip().is_loopback() || !self.local_addr.ip().is_unspecified() {
+        if self.local_addr.ip().is_loopback() {
             return Ok(self.local_addr);
         }
 
@@ -155,16 +155,6 @@ impl Endpoint {
         })
     }
 
-    /// Get an existing connection for the peer address.
-    pub fn get_connection(&self, peer_addr: &SocketAddr) -> Option<Connection> {
-        if let Some((conn, guard)) = self.connection_pool.get(peer_addr) {
-            trace!("Using cached connection to peer: {}", peer_addr);
-            Some(Connection::new(conn, guard))
-        } else {
-            None
-        }
-    }
-
     /// Connects to another peer.
     ///
     /// Returns `Connection` which is a handle for sending messages to the peer and