listener interface

network/connection_interface.py

@@ -22,5 +22,6 @@ class IConnection(ABC):
     def set_peer_info(self, peer_info):
         """
         :param peer_info: a peer info object that contains info of peer
-        :return: true if successful
+        :return: True if successful
         """
+        pass

network/listener_interface.py

@@ -0,0 +1,32 @@
+from abc import ABC, abstractmethod
+
+class IListener(ABC):
+
+	@abstractmethod
+    def listen(self, multiaddr):
+        """
+        put listener in listening mode and wait for incoming connections
+        :param multiaddr: multiaddr of peer
+        :return: return True if successful
+        """
+        pass
+
+    @abstractmethod
+    def get_addrs(self):
+        """
+        retrieve list of addresses the listener is listening on
+        :return: return list of addrs
+        """
+        pass
+
+    @abstractmethod
+    def close(self, options=None):
+        """
+        close the listener such that no more connections
+        can be open on this transport instance
+        :param options: optional object potential with timeout
+        a timeout value in ms that fires and destroy all connections
+        :return: return True if successful
+        """
+        pass
+

network/network_interface.py

@@ -26,5 +26,5 @@ class INetwork(ABC):
     def listen(self, *args):
         """
         :param *args: one or many multiaddrs to start listening on
-        :return: true if at least one success
+        :return: True if at least one success
         """