From 6e46e3ec096a0cdc8cf09a3e034775a16fd94e85 Mon Sep 17 00:00:00 2001
From: zixuanzh <zixuanzh@seas.upenn.edu>
Date: Fri, 26 Oct 2018 21:11:51 +0200
Subject: [PATCH] conn interface

---
 network/connection_interface.py | 26 ++++++++++++++++++++++++++
 network/tcp.py                  |  0
 network/transport_interface.py  |  0
 3 files changed, 26 insertions(+)
 create mode 100644 network/connection_interface.py
 create mode 100644 network/tcp.py
 create mode 100644 network/transport_interface.py

diff --git a/network/connection_interface.py b/network/connection_interface.py
new file mode 100644
index 00000000..356c2aba
--- /dev/null
+++ b/network/connection_interface.py
@@ -0,0 +1,26 @@
+from abc import ABC, abstractmethod
+
+class IConnection(ABC):
+
+    @abstractmethod
+    def get_observed_addrs(self):
+        """
+        retrieve observed addresses from underlying transport
+        :return: list of multiaddrs
+        """
+        pass
+
+    @abstractmethod
+    def get_peer_info(self):
+        """
+        retrieve peer info object that the connection connects to
+        :return: a peer info object
+        """
+        pass
+
+    @abstractmethod
+    def set_peer_info(self, peer_info):
+        """
+        :param peer_info: a peer info object that contains info of peer
+        :return: true if successful
+        """
diff --git a/network/tcp.py b/network/tcp.py
new file mode 100644
index 00000000..e69de29b
diff --git a/network/transport_interface.py b/network/transport_interface.py
new file mode 100644
index 00000000..e69de29b