Add an opt-out header for HTTP throttling. Never throttle for localhost.

net/tools/testserver/backoff_server.py

+#!/usr/bin/python2.4
+# Copyright (c) 2011 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""This is a simple HTTP server for manually testing exponential
+back-off functionality in Chrome.
+"""
+
+
+import BaseHTTPServer
+import sys
+import urlparse
+
+
+class RequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
+  keep_running = True
+
+  def do_GET(self):
+    if self.path == '/quitquitquit':
+      self.send_response(200)
+      self.send_header('Content-Type', 'text/plain')
+      self.end_headers()
+      self.wfile.write('QUITTING')
+      RequestHandler.keep_running = False
+      return
+
+    params = urlparse.parse_qs(urlparse.urlparse(self.path).query)
+
+    if not params or not 'code' in params or params['code'][0] == '200':
+      self.send_response(200)
+      self.send_header('Content-Type', 'text/plain')
+      self.end_headers()
+      self.wfile.write('OK')
+    else:
+      self.send_error(int(params['code'][0]))
+
+
+def main():
+  if len(sys.argv) != 2:
+    print "Usage: %s PORT" % sys.argv[0]
+    sys.exit(1)
+  port = int(sys.argv[1])
+  print "To stop the server, go to http://localhost:%d/quitquitquit" % port
+  httpd = BaseHTTPServer.HTTPServer(('', port), RequestHandler)
+  while RequestHandler.keep_running:
+    httpd.handle_request()
+
+
+if __name__ == '__main__':
+  main()