Fix the error due to the breaking change

In multiaddr, `split` is moved to `Multiaddr`'s method.

libp2p/peer/peerinfo.py

@@ -1,5 +1,4 @@
 import multiaddr
-import multiaddr.util
 
 from .id import id_b58_decode
 from .peerdata import PeerData
@@ -12,17 +11,23 @@ class PeerInfo:
         self.addrs = peer_data.get_addrs() if peer_data else None
 
 
-def info_from_p2p_addr(addr):
+def info_from_p2p_addr(addr: multiaddr.Multiaddr) -> PeerInfo:
     if not addr:
-        raise InvalidAddrError()
+        raise InvalidAddrError("addr should not be None")
 
-    parts = multiaddr.util.split(addr)
+    if not isinstance(addr, multiaddr.Multiaddr):
+        raise InvalidAddrError(f"addr={addr} should be in type Multiaddr")
+
+    parts = addr.split()
     if not parts:
         raise InvalidAddrError()
 
     p2p_part = parts[-1]
-    if p2p_part.protocols()[0].code != multiaddr.protocols.P_P2P:
-        raise InvalidAddrError()
+    last_protocol_code = p2p_part.protocols()[0].code
+    if last_protocol_code != multiaddr.protocols.P_P2P:
+        raise InvalidAddrError(
+            f"the last protocol should be P_P2P instead of {last_protocol_code}"
+        )
 
     # make sure the /p2p value parses as a peer.ID
     peer_id_str = p2p_part.value_for_protocol(multiaddr.protocols.P_P2P)
@@ -30,7 +35,7 @@ def info_from_p2p_addr(addr):
 
     # we might have received just an / p2p part, which means there's no addr.
     if len(parts) > 1:
-        addr = multiaddr.util.join(parts[:-1])
+        addr = multiaddr.Multiaddr.join(*parts[:-1])
 
     peer_data = PeerData()
     peer_data.addrs = [addr]

libp2p/transport/tcp/tcp.py

@@ -27,13 +27,11 @@ class TCP(ITransport):
             :param maddr: maddr of peer
             :return: return True if successful
             """
-            _multiaddr = maddr
-            _multiaddr = _multiaddr.decapsulate('/p2p')
-
-            coroutine = asyncio.start_server(self.handler,
-                                             _multiaddr.value_for_protocol('ip4'),
-                                             _multiaddr.value_for_protocol('tcp'))
-            self.server = await coroutine
+            self.server = await asyncio.start_server(
+                self.handler,
+                maddr.value_for_protocol('ip4'),
+                maddr.value_for_protocol('tcp'),
+            )
             socket = self.server.sockets[0]
             self.multiaddrs.append(_multiaddr_from_socket(socket))