Fix network helper panic if peer close connection

When the remote peer try to open an encrypted sv2 connection and then
immediatly close the tcp connection, the helper for async std and tokio
it panic, mostly of the time we don't want to panic in this situation.
This commit add an error for this case and return it.

roles/roles-utils/network-helpers/src/lib.rs

@@ -30,6 +30,8 @@ pub enum Error {
     CodecError(CodecError),
     RecvError,
     SendError,
+    // This means that a socket that was supposed to be opened have been closed, likley by the peer
+    SocketClosed,
 }
 
 impl From<CodecError> for Error {

roles/roles-utils/network-helpers/src/noise_connection_async_std.rs

@@ -47,7 +47,7 @@ impl Connection {
         ),
         Error,
     > {
-        let address = stream.peer_addr().unwrap();
+        let address = stream.peer_addr().map_err(|_| Error::SocketClosed)?;
         let (mut reader, writer) = (stream.clone(), stream.clone());
 
         let (sender_incoming, receiver_incoming): (

roles/roles-utils/network-helpers/src/noise_connection_tokio.rs

@@ -48,7 +48,7 @@ impl Connection {
         ),
         Error,
     > {
-        let address = stream.peer_addr().unwrap();
+        let address = stream.peer_addr().map_err(|_| Error::SocketClosed)?;
 
         let (mut reader, mut writer) = stream.into_split();