Fix issue3709 - BaseHTTPRequestHandler will buffer the headers and write only on end_headers call.
diff --git a/Lib/http/server.py b/Lib/http/server.py
index 8a6ba70..5ebfd25 100644
--- a/Lib/http/server.py
+++ b/Lib/http/server.py
@@ -443,7 +443,10 @@
def send_header(self, keyword, value):
"""Send a MIME header."""
if self.request_version != 'HTTP/0.9':
- self.wfile.write(("%s: %s\r\n" % (keyword, value)).encode('ASCII', 'strict'))
+ if not hasattr(self, '_headers_buffer'):
+ self._headers_buffer = []
+ self._headers_buffer.append(
+ ("%s: %s\r\n" % (keyword, value)).encode('ASCII', 'strict'))
if keyword.lower() == 'connection':
if value.lower() == 'close':
@@ -454,7 +457,9 @@
def end_headers(self):
"""Send the blank line ending the MIME headers."""
if self.request_version != 'HTTP/0.9':
- self.wfile.write(b"\r\n")
+ self._headers_buffer.append(b"\r\n")
+ self.wfile.write(b"".join(self._headers_buffer))
+ self._headers_buffer = []
def log_request(self, code='-', size='-'):
"""Log an accepted request.