From 57dd4ece9ca3e92c4a0740ad1e3537e63de70f4d Mon Sep 17 00:00:00 2001
From: Neil Booth <kyuupichan@gmail.com>
Date: Sun, 13 Nov 2016 17:52:08 +0900
Subject: [PATCH] Avoid annoying exception on shutdown

---
 lib/jsonrpc.py     | 8 ++------
 server/protocol.py | 2 +-
 2 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/lib/jsonrpc.py b/lib/jsonrpc.py
index d334d4f..e8e4210 100644
--- a/lib/jsonrpc.py
+++ b/lib/jsonrpc.py
@@ -79,16 +79,12 @@ class JSONRPC(asyncio.Protocol, LoggedClass):
         self.send_count = 0
         self.send_size = 0
         self.error_count = 0
+        self.peer_info = None
 
     def connection_made(self, transport):
         '''Handle an incoming client connection.'''
         self.transport = transport
-
-    def peer_info(self):
-        '''Return peer info.'''
-        if self.transport:
-            return self.transport.get_extra_info('peername')
-        return None
+        self.peer_info = transport.get_extra_info('peername')
 
     def connection_lost(self, exc):
         '''Handle client disconnection.'''
diff --git a/server/protocol.py b/server/protocol.py
index fb55466..e77b045 100644
--- a/server/protocol.py
+++ b/server/protocol.py
@@ -224,7 +224,7 @@ class Session(JSONRPC):
         self.manager.add_task(self, self.handle_json_request(request))
 
     def peername(self):
-        info = self.peer_info()
+        info = self.peer_info
         return 'unknown' if not info else '{}:{}'.format(info[0], info[1])
 
     def tx_hash_from_param(self, param):