From a727cca3c32b6b49262512b8a8eba64465bed25d Mon Sep 17 00:00:00 2001
From: Andrew Svetlov <andrew.svetlov@gmail.com>
Date: Fri, 16 Sep 2016 21:43:39 +0300
Subject: [PATCH] Fix #1177: static file handling doesn't raise assertion
 anymore

---
 CHANGES.rst            |  2 ++
 aiohttp/file_sender.py | 13 +++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/CHANGES.rst b/CHANGES.rst
index 6e121ed983d..f658940f164 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -12,6 +12,8 @@ CHANGES
 - Use `text/html` content type for displaying index pages by static
   file handler.
 
+- Fix `AssertionError` in static file handling #1177
+
 
 1.0.0 (09-16-2016)
 -------------------
diff --git a/aiohttp/file_sender.py b/aiohttp/file_sender.py
index 197386f0562..d03cfaecc28 100644
--- a/aiohttp/file_sender.py
+++ b/aiohttp/file_sender.py
@@ -65,8 +65,21 @@ def _send_headers(resp_impl):
             pass
 
         resp._send_headers = _send_headers
+
+        @asyncio.coroutine
+        def write_eof():
+            # Durty hack required for
+            # https://github.com/KeepSafe/aiohttp/issues/1177
+            # do nothing in write_eof
+            pass
+
+        resp.write_eof = write_eof
+
         yield from resp.prepare(request)
 
+        # TODO: %O and %b (resp_impl.output_length and resp_impl.output)
+        # access log formats are broken
+
         loop = request.app.loop
         # See https://github.com/KeepSafe/aiohttp/issues/958 for details