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Add status_code to the OutputTransform.transform_first_chunk interface. 

This is needed for correct support of the 304 status code, which
has no body and should not have either a Content-Length or
Transfer-Encoding.  This is a backwards-incompatible change to an
interface that was never technically private, but not included in the
documentation and as far as I can tell was never used outside
tornado itself.
This commit is contained in:
Ben Darnell 2012-05-20 16:27:28 -07:00
parent 53452e8d5a
commit dd7655964a
1 changed files with 9 additions and 8 deletions
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17
tornado/web.py
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@ -633,8 +633,9 @@ class RequestHandler(object):
if not self._headers_written:
self._headers_written = True
for transform in self._transforms:
self._headers, chunk = transform.transform_first_chunk(
self._headers, chunk, include_footers)
self._status_code, self._headers, chunk = \
transform.transform_first_chunk(
self._status_code, self._headers, chunk, include_footers)
headers = self._generate_headers()
else:
for transform in self._transforms:
@ -1668,8 +1669,8 @@ class OutputTransform(object):
def __init__(self, request):
pass
def transform_first_chunk(self, headers, chunk, finishing):
return headers, chunk
def transform_first_chunk(self, status_code, headers, chunk, finishing):
return status_code, headers, chunk
def transform_chunk(self, chunk, finishing):
return chunk
@ -1690,7 +1691,7 @@ class GZipContentEncoding(OutputTransform):
self._gzipping = request.supports_http_1_1() and \
"gzip" in request.headers.get("Accept-Encoding", "")
def transform_first_chunk(self, headers, chunk, finishing):
def transform_first_chunk(self, status_code, headers, chunk, finishing):
if self._gzipping:
ctype = _unicode(headers.get("Content-Type", "")).split(";")[0]
self._gzipping = (ctype in self.CONTENT_TYPES) and \
@ -1704,7 +1705,7 @@ class GZipContentEncoding(OutputTransform):
chunk = self.transform_chunk(chunk, finishing)
if "Content-Length" in headers:
headers["Content-Length"] = str(len(chunk))
return headers, chunk
return status_code, headers, chunk
def transform_chunk(self, chunk, finishing):
if self._gzipping:
@ -1727,7 +1728,7 @@ class ChunkedTransferEncoding(OutputTransform):
def __init__(self, request):
self._chunking = request.supports_http_1_1()
def transform_first_chunk(self, headers, chunk, finishing):
def transform_first_chunk(self, status_code, headers, chunk, finishing):
if self._chunking:
# No need to chunk the output if a Content-Length is specified
if "Content-Length" in headers or "Transfer-Encoding" in headers:
@ -1735,7 +1736,7 @@ class ChunkedTransferEncoding(OutputTransform):
else:
headers["Transfer-Encoding"] = "chunked"
chunk = self.transform_chunk(chunk, finishing)
return headers, chunk
return status_code, headers, chunk
def transform_chunk(self, block, finishing):
if self._chunking: