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jblitzar
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github-python

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content_encoding = res.headers.get('Content-Encoding', 'identity')
res_body_plain = self.decode_content_body(res_body, content_encoding)
res_body_modified = self.response_handler(req, req_body, res, res_body_plain)
if res_body_modified is False:
self.send_error(403)
return
elif res_body_modified is not None:
res_body_plain = res_body_modified
res_body = self.encode_content_body(res_body_plain, content_encoding)
res.headers['Content-Length'] = str(len(res_body))
setattr(res, 'headers', self.filter_headers(res.headers))
self.wfile.write("%s %d %s\r\n" % (self.protocol_version, res.status, res.reason))
for line in res.headers.headers:
self.wfile.write(line)
self.end_headers()
self.wfile.write(res_body)
self.wfile.flush()
with self.lock:
self.save_handler(req, req_body, res, res_body_plain)
def relay_streaming(self, res):
self.wfile.write("%s %d %s\r\n" % (self.protocol_version, res.status, res.reason))
for line in res.headers.headers:
self.wfile.write(line)
self.end_headers()
try:
while True:
chunk = res.read(8192)
if not chunk:
break
self.wfile.write(chunk)
self.wfile.flush()
except socket.error:
# connection closed by client
pass
do_HEAD = do_GET
do_POST = do_GET
do_PUT = do_GET
do_DELETE = do_GET
do_OPTIONS = do_GET
def filter_headers(self, headers):
# http://tools.ietf.org/html/rfc2616#section-13.5.1
hop_by_hop = ('connection', 'keep-alive', 'proxy-authenticate', 'proxy-authorization', 'te', 'trailers', 'transfer-encoding', 'upgrade')
for k in hop_by_hop:
del headers[k]
# accept only supported encodings
if 'Accept-Encoding' in headers:
ae = headers['Accept-Encoding']
filtered_encodings = [x for x in re.split(r',\s*', ae) if x in ('identity', 'gzip', 'x-gzip', 'deflate')]
headers['Accept-Encoding'] = ', '.join(filtered_encodings)
return headers
def encode_content_body(self, text, encoding):
if encoding == 'identity':
data = text
elif encoding in ('gzip', 'x-gzip'):
io = StringIO()
with gzip.GzipFile(fileobj=io, mode='wb') as f:
f.write(text)
data = io.getvalue()
elif encoding == 'deflate':
data = zlib.compress(text)
else:
raise Exception("Unknown Content-Encoding: %s" % encoding)
return data
def decode_content_body(self, data, encoding):
if encoding == 'identity':
text = data
elif encoding in ('gzip', 'x-gzip'):
io = StringIO(data)
with gzip.GzipFile(fileobj=io) as f:
text = f.read()
elif encoding == 'deflate':
try:
text = zlib.decompress(data)
except zlib.error:
text = zlib.decompress(data, -zlib.MAX_WBITS)
else:
raise Exception("Unknown Content-Encoding: %s" % encoding)
return text
def send_cacert(self):
with open(self.cacert, 'rb') as f:
data = f.read()
self.wfile.write("%s %d %s\r\n" % (self.protocol_version, 200, 'OK'))
self.send_header('Content-Type', 'application/x-x509-ca-cert')
self.send_header('Content-Length', len(data))
self.send_header('Connection', 'close')
self.end_headers()
self.wfile.write(data)