From 5934eaffd0efb38816e5013aa4db377833e926bc Mon Sep 17 00:00:00 2001
From: Alex Haynes <alhaynes@seas.upenn.edu>
Date: Sun, 21 Oct 2018 13:44:39 -0400
Subject: [PATCH] added listen to interface

---
 network/network_interface.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/network/network_interface.py b/network/network_interface.py
index f04c3a3a..ae805d3c 100644
--- a/network/network_interface.py
+++ b/network/network_interface.py
@@ -21,3 +21,10 @@ class INetwork(ABC):
         :return: stream instance
         """
         pass
+
+    @abstractmethod
+    def listen(self, *args):
+        """
+        :param *args: one or many multiaddrs to start listening on
+        :return: true if at least one success
+        """