GzipWSGIFilter removes Content-length header if compressing

1 files changed, 10 insertions, 0 deletions

diff --git a/wsgitools/filters.py b/wsgitools/filters.py
index b0bf8e1..5821c00 100644
--- a/wsgitools/filters.py
+++ b/wsgitools/filters.py
@@ -360,6 +360,16 @@ class GzipWSGIFilter(BaseWSGIFilter):
                 self.sio = StringIO.StringIO()
                 self.gzip = gzip.GzipFile(fileobj=self.sio, mode="w")
         return environ
+    def filter_header(self, headername, headervalue):
+        """ BaseWSGIFilter interface
+        @type headername: str
+        @type headervalue: str
+        @rtype: (str, str) or None
+        """
+        if self.compress:
+            if headername.lower() == "content-length":
+                return None
+        return (headername, headervalue)
     def filter_headers(self, headers):
         """BaseWSGIFilter interface
         @type headers: [(str, str)]