Merge branch 'master' into fix/detection-of-close

libp2p/network/swarm.py

@@ -10,7 +10,11 @@ from libp2p.peer.peerstore import PeerStoreError
 from libp2p.peer.peerstore_interface import IPeerStore
 from libp2p.routing.interfaces import IPeerRouting
 from libp2p.stream_muxer.abc import IMuxedConn
-from libp2p.transport.exceptions import MuxerUpgradeFailure, SecurityUpgradeFailure
+from libp2p.transport.exceptions import (
+    MuxerUpgradeFailure,
+    OpenConnectionError,
+    SecurityUpgradeFailure,
+)
 from libp2p.transport.listener_interface import IListener
 from libp2p.transport.transport_interface import ITransport
 from libp2p.transport.upgrader import TransportUpgrader
@@ -99,7 +103,13 @@ class Swarm(INetwork):
             multiaddr = self.router.find_peer(peer_id)
         # Dial peer (connection to peer does not yet exist)
         # Transport dials peer (gets back a raw conn)
-        raw_conn = await self.transport.dial(multiaddr)
+        try:
+            raw_conn = await self.transport.dial(multiaddr)
+        except OpenConnectionError as error:
+            logger.debug("fail to dial peer %s over base transport", peer_id)
+            raise SwarmException(
+                "fail to open connection to peer %s", peer_id
+            ) from error
 
         logger.debug("dialed peer %s over base transport", peer_id)
 
@@ -137,6 +147,7 @@ class Swarm(INetwork):
         """
         :param peer_id: peer_id of destination
         :param protocol_id: protocol id
+        :raises SwarmException: raised when an error occurs
         :return: net stream instance
         """
         logger.debug(