view tests/dumbhttp.py @ 23412:94092019e839 stable

mq: fix update of headers that occur in the "wrong" order

Mq tried to insert headers in the right order. Sometimes it would stop
searching before checking all headers and it could thus duplicate a header
instead of replacing it.

#!/usr/bin/env python

"""
Small and dumb HTTP server for use in tests.
"""

from optparse import OptionParser
import BaseHTTPServer, SimpleHTTPServer, os, signal, subprocess, sys


def run(server_class=BaseHTTPServer.HTTPServer,
        handler_class=SimpleHTTPServer.SimpleHTTPRequestHandler,
        server_address=('localhost', 8000)):
    httpd = server_class(server_address, handler_class)
    httpd.serve_forever()


if __name__ == '__main__':
    parser = OptionParser()
    parser.add_option('-p', '--port', dest='port', type='int', default=8000,
        help='TCP port to listen on', metavar='PORT')
    parser.add_option('-H', '--host', dest='host', default='localhost',
        help='hostname or IP to listen on', metavar='HOST')
    parser.add_option('--pid', dest='pid',
        help='file name where the PID of the server is stored')
    parser.add_option('-f', '--foreground', dest='foreground',
        action='store_true',
        help='do not start the HTTP server in the background')

    (options, args) = parser.parse_args()

    signal.signal(signal.SIGTERM, lambda x, y: sys.exit(0))

    if options.foreground and options.pid:
        parser.error("options --pid and --foreground are mutually exclusive")

    if options.foreground:
        run(server_address=(options.host, options.port))
    else:
        # This doesn't attempt to cleanly detach the process, as it's not
        # meant to be a long-lived, independent process. As a consequence,
        # it's still part of the same process group, and keeps any file
        # descriptors it might have inherited besided stdin/stdout/stderr.
        # Trying to do things cleanly is more complicated, requires
        # OS-dependent code, and is not worth the effort.
        proc = subprocess.Popen([sys.executable, __file__, '-f',
            '-H', options.host, '-p', str(options.port)],
            stdin=open(os.devnull, 'r'),
            stdout=open(os.devnull, 'w'),
            stderr=subprocess.STDOUT)
        if options.pid:
            fp = file(options.pid, 'wb')
            fp.write(str(proc.pid) + '\n')
            fp.close()