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- #!/usr/bin/env python
- """
- Dummy server used for unit testing.
- """
- from __future__ import print_function
- import logging
- import os
- import random
- import string
- import sys
- import threading
- import socket
- import warnings
- import ssl
- from datetime import datetime
- from urllib3.exceptions import HTTPWarning
- import tornado.httpserver
- import tornado.ioloop
- import tornado.netutil
- import tornado.web
- log = logging.getLogger(__name__)
- CERTS_PATH = os.path.join(os.path.dirname(__file__), "certs")
- DEFAULT_CERTS = {
- "certfile": os.path.join(CERTS_PATH, "server.crt"),
- "keyfile": os.path.join(CERTS_PATH, "server.key"),
- "cert_reqs": ssl.CERT_OPTIONAL,
- "ca_certs": os.path.join(CERTS_PATH, "cacert.pem"),
- }
- CLIENT_INTERMEDIATE_PEM = "client_intermediate.pem"
- CLIENT_NO_INTERMEDIATE_PEM = "client_no_intermediate.pem"
- CLIENT_INTERMEDIATE_KEY = "client_intermediate.key"
- CLIENT_CERT = os.path.join(CERTS_PATH, CLIENT_INTERMEDIATE_PEM)
- PASSWORD_KEYFILE = os.path.join(CERTS_PATH, "server_password.key")
- PASSWORD_CLIENT_KEYFILE = os.path.join(CERTS_PATH, "client_password.key")
- DEFAULT_CA = os.path.join(CERTS_PATH, "cacert.pem")
- DEFAULT_CA_KEY = os.path.join(CERTS_PATH, "cacert.key")
- DEFAULT_CA_BAD = os.path.join(CERTS_PATH, "client_bad.pem")
- COMBINED_CERT_AND_KEY = os.path.join(CERTS_PATH, "server.combined.pem")
- def _has_ipv6(host):
- """ Returns True if the system can bind an IPv6 address. """
- sock = None
- has_ipv6 = False
- if socket.has_ipv6:
- # has_ipv6 returns true if cPython was compiled with IPv6 support.
- # It does not tell us if the system has IPv6 support enabled. To
- # determine that we must bind to an IPv6 address.
- # https://github.com/urllib3/urllib3/pull/611
- # https://bugs.python.org/issue658327
- try:
- sock = socket.socket(socket.AF_INET6)
- sock.bind((host, 0))
- has_ipv6 = True
- except Exception:
- pass
- if sock:
- sock.close()
- return has_ipv6
- # Some systems may have IPv6 support but DNS may not be configured
- # properly. We can not count that localhost will resolve to ::1 on all
- # systems. See https://github.com/urllib3/urllib3/pull/611 and
- # https://bugs.python.org/issue18792
- HAS_IPV6_AND_DNS = _has_ipv6("localhost")
- HAS_IPV6 = _has_ipv6("::1")
- # Different types of servers we have:
- class NoIPv6Warning(HTTPWarning):
- "IPv6 is not available"
- pass
- class SocketServerThread(threading.Thread):
- """
- :param socket_handler: Callable which receives a socket argument for one
- request.
- :param ready_event: Event which gets set when the socket handler is
- ready to receive requests.
- """
- USE_IPV6 = HAS_IPV6_AND_DNS
- def __init__(self, socket_handler, host="localhost", port=8081, ready_event=None):
- threading.Thread.__init__(self)
- self.daemon = True
- self.socket_handler = socket_handler
- self.host = host
- self.ready_event = ready_event
- def _start_server(self):
- if self.USE_IPV6:
- sock = socket.socket(socket.AF_INET6)
- else:
- warnings.warn("No IPv6 support. Falling back to IPv4.", NoIPv6Warning)
- sock = socket.socket(socket.AF_INET)
- if sys.platform != "win32":
- sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
- sock.bind((self.host, 0))
- self.port = sock.getsockname()[1]
- # Once listen() returns, the server socket is ready
- sock.listen(1)
- if self.ready_event:
- self.ready_event.set()
- self.socket_handler(sock)
- sock.close()
- def run(self):
- self.server = self._start_server()
- def run_tornado_app(app, io_loop, certs, scheme, host):
- assert io_loop == tornado.ioloop.IOLoop.current()
- # We can't use fromtimestamp(0) because of CPython issue 29097, so we'll
- # just construct the datetime object directly.
- app.last_req = datetime(1970, 1, 1)
- if scheme == "https":
- http_server = tornado.httpserver.HTTPServer(app, ssl_options=certs)
- else:
- http_server = tornado.httpserver.HTTPServer(app)
- sockets = tornado.netutil.bind_sockets(None, address=host)
- port = sockets[0].getsockname()[1]
- http_server.add_sockets(sockets)
- return http_server, port
- def run_loop_in_thread(io_loop):
- t = threading.Thread(target=io_loop.start)
- t.start()
- return t
- def get_unreachable_address():
- while True:
- host = "".join(random.choice(string.ascii_lowercase) for _ in range(60))
- sockaddr = (host, 54321)
- # check if we are really "lucky" and hit an actual server
- try:
- s = socket.create_connection(sockaddr)
- except socket.error:
- return sockaddr
- else:
- s.close()
- if __name__ == "__main__":
- # For debugging dummyserver itself - python -m dummyserver.server
- from .testcase import TestingApp
- host = "127.0.0.1"
- io_loop = tornado.ioloop.IOLoop.current()
- app = tornado.web.Application([(r".*", TestingApp)])
- server, port = run_tornado_app(app, io_loop, None, "http", host)
- server_thread = run_loop_in_thread(io_loop)
- print("Listening on http://{host}:{port}".format(host=host, port=port))
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