From 529a587cdcd814d734942553964d4b12ac3ddf7a Mon Sep 17 00:00:00 2001
From: Ilya Kreymer <ikreymer@users.noreply.github.com>
Date: Wed, 30 Jan 2019 18:14:09 -0500
Subject: [PATCH] recoder fix: ensure Transfer-Encoding header is not passed
 through by RecorderApp, (#437)

as may result in duplicate Transfer-Encoding in py2.7, fixes #432
---
 pywb/recorder/recorderapp.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pywb/recorder/recorderapp.py b/pywb/recorder/recorderapp.py
index 1eb35ffe..5fb35eac 100644
--- a/pywb/recorder/recorderapp.py
+++ b/pywb/recorder/recorderapp.py
@@ -252,6 +252,10 @@ class RecorderApp(object):
 
         resp_iter = StreamIter(resp_stream)
 
+        # ensure TE header from upstream is not included,
+        # added automatically by wsgi app
+        res.headers.pop('Transfer-Encoding', '')
+
         start_response('200 OK', list(res.headers.items()))
         return resp_iter