#!/usr/bin/env python
#
# Copyright 2012, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
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#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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"""Standalone WebSocket server.
BASIC USAGE
Use this server to run mod_pywebsocket without Apache HTTP Server.
Usage:
python standalone.py [-p <ws_port>] [-w <websock_handlers>]
[-s <scan_dir>]
[-d <document_root>]
[-m <websock_handlers_map_file>]
... for other options, see _main below ...
<ws_port> is the port number to use for ws:// connection.
<document_root> is the path to the root directory of HTML files.
<websock_handlers> is the path to the root directory of WebSocket handlers.
See __init__.py for details of <websock_handlers> and how to write WebSocket
handlers. If this path is relative, <document_root> is used as the base.
<scan_dir> is a path under the root directory. If specified, only the
handlers under scan_dir are scanned. This is useful in saving scan time.
SUPPORTING TLS
To support TLS, run standalone.py with -t, -k, and -c options.
SUPPORTING CLIENT AUTHENTICATION
To support client authentication with TLS, run standalone.py with -t, -k, -c,
and --tls-client-auth, and --tls-client-ca options.
E.g., $./standalone.py -d ../example -p 10443 -t -c ../test/cert/cert.pem -k
../test/cert/key.pem --tls-client-auth --tls-client-ca=../test/cert/cacert.pem
CONFIGURATION FILE
You can also write a configuration file and use it by specifying the path to
the configuration file by --config option. Please write a configuration file
following the documentation of the Python ConfigParser library. Name of each
entry must be the long version argument name. E.g. to set log level to debug,
add the following line:
log_level=debug
For options which doesn't take value, please add some fake value. E.g. for
--tls option, add the following line:
tls=True
Note that tls will be enabled even if you write tls=False as the value part is
fake.
When both a command line argument and a configuration file entry are set for
the same configuration item, the command line value will override one in the
configuration file.
THREADING
This server is derived from SocketServer.ThreadingMixIn. Hence a thread is
used for each request.
SECURITY WARNING
This uses CGIHTTPServer and CGIHTTPServer is not secure.
It may execute arbitrary Python code or external programs. It should not be
used outside a firewall.
"""
import BaseHTTPServer
import CGIHTTPServer
import SimpleHTTPServer
import SocketServer
import ConfigParser
import base64
import httplib
import logging
import logging.handlers
import optparse
import os
import re
import select
import socket
import sys
import threading
import time
_HAS_SSL = False
_HAS_OPEN_SSL = False
try:
import ssl
_HAS_SSL = True
except ImportError:
try:
import OpenSSL.SSL
_HAS_OPEN_SSL = True
except ImportError:
pass
# Find our local mod_pywebsocket module
sys.path.append(os.path.join(os.path.dirname(__file__),
"../../third_party/pywebsocket/src"))
from mod_pywebsocket import common
from mod_pywebsocket import dispatch
from mod_pywebsocket import handshake
from mod_pywebsocket import http_header_util
from mod_pywebsocket import memorizingfile
from mod_pywebsocket import util
_DEFAULT_LOG_MAX_BYTES = 1024 * 256
_DEFAULT_LOG_BACKUP_COUNT = 5
_DEFAULT_REQUEST_QUEUE_SIZE = 128
# 1024 is practically large enough to contain WebSocket handshake lines.
_MAX_MEMORIZED_LINES = 1024
class _StandaloneConnection(object):
"""Mimic mod_python mp_conn."""
def __init__(self, request_handler):
"""Construct an instance.
Args:
request_handler: A WebSocketRequestHandler instance.
"""
self._request_handler = request_handler
def get_local_addr(self):
"""Getter to mimic mp_conn.local_addr."""
return (self._request_handler.server.server_name,
self._request_handler.server.server_port)
local_addr = property(get_local_addr)
def get_remote_addr(self):
"""Getter to mimic mp_conn.remote_addr.
Setting the property in __init__ won't work because the request
handler is not initialized yet there."""
return self._request_handler.client_address
remote_addr = property(get_remote_addr)
def write(self, data):
"""Mimic mp_conn.write()."""
return self._request_handler.wfile.write(data)
def read(self, length):
"""Mimic mp_conn.read()."""
return self._request_handler.rfile.read(length)
def get_memorized_lines(self):
"""Get memorized lines."""
return self._request_handler.rfile.get_memorized_lines()
class _StandaloneRequest(object):
"""Mimic mod_python request."""
def __init__(self, request_handler, use_tls):
"""Construct an instance.
Args:
request_handler: A WebSocketRequestHandler instance.
"""
self._logger = util.get_class_logger(self)
self._request_handler = request_handler
self.connection = _StandaloneConnection(request_handler)
self._use_tls = use_tls
self.headers_in = request_handler.headers
def get_uri(self):
"""Getter to mimic request.uri."""
return self._request_handler.path
uri = property(get_uri)
def get_method(self):
"""Getter to mimic request.method."""
return self._request_handler.command
method = property(get_method)
def is_https(self):
"""Mimic request.is_https()."""
return self._use_tls
def _drain_received_data(self):
"""Don't use this method from WebSocket handler. Drains unread data
in the receive buffer.
"""
raw_socket = self._request_handler.connection
drained_data = util.drain_received_data(raw_socket)
if drained_data:
self._logger.debug(
'Drained data following close frame: %r', drained_data)
class _StandaloneSSLConnection(object):
"""A wrapper class for OpenSSL.SSL.Connection to provide makefile method
which is not supported by the class.
"""
def __init__(self, connection):
self._connection = connection
def __getattribute__(self, name):
if name in ('_connection', 'makefile'):
return object.__getattribute__(self, name)
return self._connection.__getattribute__(name)
def __setattr__(self, name, value):
if name in ('_connection', 'makefile'):
return object.__setattr__(self, name, value)
return self._connection.__setattr__(name, value)
def makefile(self, mode='r', bufsize=-1):
return socket._fileobject(self._connection, mode, bufsize)
class WebSocketServer(SocketServer.ThreadingMixIn, BaseHTTPServer.HTTPServer):
"""HTTPServer specialized for WebSocket."""
# Overrides SocketServer.ThreadingMixIn.daemon_threads
daemon_threads = True
# Overrides BaseHTTPServer.HTTPServer.allow_reuse_address
allow_reuse_address = True
def __init__(self, options):
"""Override SocketServer.TCPServer.__init__ to set SSL enabled
socket object to self.socket before server_bind and server_activate,
if necessary.
"""
self._logger = util.get_class_logger(self)
self.request_queue_size = options.request_queue_size
self.__ws_is_shut_down = threading.Event()
self.__ws_serving = False
SocketServer.BaseServer.__init__(
self, (options.server_host, options.port), WebSocketRequestHandler)
# Expose the options object to allow handler objects access it. We name
# it with websocket_ prefix to avoid conflict.
self.websocket_server_options = options
self._create_sockets()
self.server_bind()
self.server_activate()
def _create_sockets(self):
self.server_name, self.server_port = self.server_address
self._sockets = []
if not self.server_name:
# On platforms that doesn't support IPv6, the first bind fails.
# On platforms that supports IPv6
# - If it binds both IPv4 and IPv6 on call with AF_INET6, the
# first bind succeeds and the second fails (we'll see 'Address
# already in use' error).
# - If it binds only IPv6 on call with AF_INET6, both call are
# expected to succeed to listen both protocol.
addrinfo_array = [
(socket.AF_INET6, socket.SOCK_STREAM, '', '', ''),
(socket.AF_INET, socket.SOCK_STREAM, '', '', '')]
else:
addrinfo_array = socket.getaddrinfo(self.server_name,
self.server_port,
socket.AF_UNSPEC,
socket.SOCK_STREAM,
socket.IPPROTO_TCP)
for addrinfo in addrinfo_array:
self._logger.info('Create socket on: %r', addrinfo)
family, socktype, proto, canonname, sockaddr = addrinfo
try:
socket_ = socket.socket(family, socktype)
except Exception, e:
self._logger.info('Skip by failure: %r', e)
continue
if self.websocket_server_options.use_tls:
if _HAS_SSL:
if self.websocket_server_options.tls_client_auth:
client_cert_ = ssl.CERT_REQUIRED
else:
client_cert_ = ssl.CERT_NONE
socket_ = ssl.wrap_socket(socket_,
keyfile=self.websocket_server_options.private_key,
certfile=self.websocket_server_options.certificate,
ssl_version=ssl.PROTOCOL_SSLv23,
ca_certs=self.websocket_server_options.tls_client_ca,
cert_reqs=client_cert_)
if _HAS_OPEN_SSL:
ctx = OpenSSL.SSL.Context(OpenSSL.SSL.SSLv23_METHOD)
ctx.use_privatekey_file(
self.websocket_server_options.private_key)
ctx.use_certificate_file(
self.websocket_server_options.certificate)
socket_ = OpenSSL.SSL.Connection(ctx, socket_)
self._sockets.append((socket_, addrinfo))
def server_bind(self):
"""Override SocketServer.TCPServer.server_bind to enable multiple
sockets bind.
"""
failed_sockets = []
for socketinfo in self._sockets:
socket_, addrinfo = socketinfo
self._logger.info('Bind on: %r', addrinfo)
if self.allow_reuse_address:
socket_.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
try:
socket_.bind(self.server_address)
except Exception, e:
self._logger.info('Skip by failure: %r', e)
socket_.close()
failed_sockets.append(socketinfo)
for socketinfo in failed_sockets:
self._sockets.remove(socketinfo)
def server_activate(self):
"""Override SocketServer.TCPServer.server_activate to enable multiple
sockets listen.
"""
failed_sockets = []
for socketinfo in self._sockets:
socket_, addrinfo = socketinfo
self._logger.info('Listen on: %r', addrinfo)
try:
socket_.listen(self.request_queue_size)
except Exception, e:
self._logger.info('Skip by failure: %r', e)
socket_.close()
failed_sockets.append(socketinfo)
for socketinfo in failed_sockets:
self._sockets.remove(socketinfo)
if len(self._sockets) == 0:
self._logger.critical(
'No sockets activated. Use info log level to see the reason.')
def server_close(self):
"""Override SocketServer.TCPServer.server_close to enable multiple
sockets close.
"""
for socketinfo in self._sockets:
socket_, addrinfo = socketinfo
self._logger.info('Close on: %r', addrinfo)
socket_.close()
def fileno(self):
"""Override SocketServer.TCPServer.fileno."""
self._logger.critical('Not supported: fileno')
return self._sockets[0][0].fileno()
def handle_error(self, rquest, client_address):
"""Override SocketServer.handle_error."""
self._logger.error(
'Exception in processing request from: %r\n%s',
client_address,
util.get_stack_trace())
# Note: client_address is a tuple.
def get_request(self):
"""Override TCPServer.get_request to wrap OpenSSL.SSL.Connection
object with _StandaloneSSLConnection to provide makefile method. We
cannot substitute OpenSSL.SSL.Connection.makefile since it's readonly
attribute.
"""
accepted_socket, client_address = self.socket.accept()
if self.websocket_server_options.use_tls and _HAS_OPEN_SSL:
accepted_socket = _StandaloneSSLConnection(accepted_socket)
return accepted_socket, client_address
def serve_forever(self, poll_interval=0.5):
"""Override SocketServer.BaseServer.serve_forever."""
self.__ws_serving = True
self.__ws_is_shut_down.clear()
handle_request = self.handle_request
if hasattr(self, '_handle_request_noblock'):
handle_request = self._handle_request_noblock
else:
self._logger.warning('Fallback to blocking request handler')
try:
while self.__ws_serving:
r, w, e = select.select(
[socket_[0] for socket_ in self._sockets],
[], [], poll_interval)
for socket_ in r:
self.socket = socket_
handle_request()
self.socket = None
finally:
self.__ws_is_shut_down.set()
def shutdown(self):
"""Override SocketServer.BaseServer.shutdown."""
self.__ws_serving = False
self.__ws_is_shut_down.wait()
class WebSocketRequestHandler(CGIHTTPServer.CGIHTTPRequestHandler):
"""CGIHTTPRequestHandler specialized for WebSocket."""
# Use httplib.HTTPMessage instead of mimetools.Message.
MessageClass = httplib.HTTPMessage
def setup(self):
"""Override SocketServer.StreamRequestHandler.setup to wrap rfile
with MemorizingFile.
This method will be called by BaseRequestHandler's constructor
before calling BaseHTTPRequestHandler.handle.
BaseHTTPRequestHandler.handle will call
BaseHTTPRequestHandler.handle_one_request and it will call
WebSocketRequestHandler.parse_request.
"""
# Call superclass's setup to prepare rfile, wfile, etc. See setup
# definition on the root class SocketServer.StreamRequestHandler to
# understand what this does.
CGIHTTPServer.CGIHTTPRequestHandler.setup(self)
self.rfile = memorizingfile.MemorizingFile(
self.rfile,
max_memorized_lines=_MAX_MEMORIZED_LINES)
def __init__(self, request, client_address, server):
self._logger = util.get_class_logger(self)
self._options = server.websocket_server_options
# Overrides CGIHTTPServerRequestHandler.cgi_directories.
self.cgi_directories = self._options.cgi_directories
# Replace CGIHTTPRequestHandler.is_executable method.
if self._options.is_executable_method is not None:
self.is_executable = self._options.is_executable_method
# This actually calls BaseRequestHandler.__init__.
CGIHTTPServer.CGIHTTPRequestHandler.__init__(
self, request, client_address, server)
def parse_request(self):
"""Override BaseHTTPServer.BaseHTTPRequestHandler.parse_request.
Return True to continue processing for HTTP(S), False otherwise.
See BaseHTTPRequestHandler.handle_one_request method which calls
this method to understand how the return value will be handled.
"""
# We hook parse_request method, but also call the original
# CGIHTTPRequestHandler.parse_request since when we return False,
# CGIHTTPRequestHandler.handle_one_request continues processing and
# it needs variables set by CGIHTTPRequestHandler.parse_request.
#
# Variables set by this method will be also used by WebSocket request
# handling (self.path, self.command, self.requestline, etc. See also
# how _StandaloneRequest's members are implemented using these
# attributes).
if not CGIHTTPServer.CGIHTTPRequestHandler.parse_request(self):
return False
if self._options.use_basic_auth:
auth = self.headers.getheader('Authorization')
if auth != self._options.basic_auth_credential:
self.send_response(401)
self.send_header('WWW-Authenticate',
'Basic realm="Pywebsocket"')
self.end_headers()
self._logger.info('Request basic authentication')
return True
host, port, resource = http_header_util.parse_uri(self.path)
if resource is None:
self._logger.info('Invalid URI: %r', self.path)
self._logger.info('Fallback to CGIHTTPRequestHandler')
return True
server_options = self.server.websocket_server_options
if host is not None:
validation_host = server_options.validation_host
if validation_host is not None and host != validation_host:
self._logger.info('Invalid host: %r (expected: %r)',
host,
validation_host)
self._logger.info('Fallback to CGIHTTPRequestHandler')
return True
if port is not None:
validation_port = server_options.validation_port
if validation_port is not None and port != validation_port:
self._logger.info('Invalid port: %r (expected: %r)',
port,
validation_port)
self._logger.info('Fallback to CGIHTTPRequestHandler')
return True
self.path = resource
request = _StandaloneRequest(self, self._options.use_tls)
try:
# Fallback to default http handler for request paths for which
# we don't have request handlers.
if not self._options.dispatcher.get_handler_suite(self.path):
self._logger.info('No handler for resource: %r',
self.path)
self._logger.info('Fallback to CGIHTTPRequestHandler')
return True
except dispatch.DispatchException, e:
self._logger.info('%s', e)
self.send_error(e.status)
return False
# If any Exceptions without except clause setup (including
# DispatchException) is raised below this point, it will be caught
# and logged by WebSocketServer.
try:
try:
handshake.do_handshake(
request,
self._options.dispatcher,
allowDraft75=self._options.allow_draft75,
strict=self._options.strict)
except handshake.VersionException, e:
self._logger.info('%s', e)
self.send_response(common.HTTP_STATUS_BAD_REQUEST)
self.send_header(common.SEC_WEBSOCKET_VERSION_HEADER,
e.supported_versions)
self.end_headers()
return False
except handshake.HandshakeException, e:
# Handshake for ws(s) failed.
self._logger.info('%s', e)
self.send_error(e.status)
return False
request._dispatcher = self._options.dispatcher
self._options.dispatcher.transfer_data(request)
except handshake.AbortedByUserException, e:
self._logger.info('%s', e)
return False
def log_request(self, code='-', size='-'):
"""Override BaseHTTPServer.log_request."""
self._logger.info('"%s" %s %s',
self.requestline, str(code), str(size))
def log_error(self, *args):
"""Override BaseHTTPServer.log_error."""
# Despite the name, this method is for warnings than for errors.
# For example, HTTP status code is logged by this method.
self._logger.warning('%s - %s',
self.address_string(),
args[0] % args[1:])
def is_cgi(self):
"""Test whether self.path corresponds to a CGI script.
Add extra check that self.path doesn't contains ..
Also check if the file is a executable file or not.
If the file is not executable, it is handled as static file or dir
rather than a CGI script.
"""
if CGIHTTPServer.CGIHTTPRequestHandler.is_cgi(self):
if '..' in self.path:
return False
# strip query parameter from request path
resource_name = self.path.split('?', 2)[0]
# convert resource_name into real path name in filesystem.
scriptfile = self.translate_path(resource_name)
if not os.path.isfile(scriptfile):
return False
if not self.is_executable(scriptfile):
return False
return True
return False
def _get_logger_from_class(c):
return logging.getLogger('%s.%s' % (c.__module__, c.__name__))
def _configure_logging(options):
logging.addLevelName(common.LOGLEVEL_FINE, 'FINE')
logger = logging.getLogger()
logger.setLevel(logging.getLevelName(options.log_level.upper()))
if options.log_file:
handler = logging.handlers.RotatingFileHandler(
options.log_file, 'a', options.log_max, options.log_count)
else:
handler = logging.StreamHandler()
formatter = logging.Formatter(
'[%(asctime)s] [%(levelname)s] %(name)s: %(message)s')
handler.setFormatter(formatter)
logger.addHandler(handler)
deflate_log_level_name = logging.getLevelName(
options.deflate_log_level.upper())
_get_logger_from_class(util._Deflater).setLevel(
deflate_log_level_name)
_get_logger_from_class(util._Inflater).setLevel(
deflate_log_level_name)
def _alias_handlers(dispatcher, websock_handlers_map_file):
"""Set aliases specified in websock_handler_map_file in dispatcher.
Args:
dispatcher: dispatch.Dispatcher instance
websock_handler_map_file: alias map file
"""
fp = open(websock_handlers_map_file)
try:
for line in fp:
if line[0] == '#' or line.isspace():
continue
m = re.match('(\S+)\s+(\S+)', line)
if not m:
logging.warning('Wrong format in map file:' + line)
continue
try:
dispatcher.add_resource_path_alias(
m.group(1), m.group(2))
except dispatch.DispatchException, e:
logging.error(str(e))
finally:
fp.close()
def _build_option_parser():
parser = optparse.OptionParser()
parser.add_option('--config', dest='config_file', type='string',
default=None,
help=('Path to configuration file. See the file comment '
'at the top of this file for the configuration '
'file format'))
parser.add_option('-H', '--server-host', '--server_host',
dest='server_host',
default='',
help='server hostname to listen to')
parser.add_option('-V', '--validation-host', '--validation_host',
dest='validation_host',
default=None,
help='server hostname to validate in absolute path.')
parser.add_option('-p', '--port', dest='port', type='int',
default=common.DEFAULT_WEB_SOCKET_PORT,
help='port to listen to')
parser.add_option('-P', '--validation-port', '--validation_port',
dest='validation_port', type='int',
default=None,
help='server port to validate in absolute path.')
parser.add_option('-w', '--websock-handlers', '--websock_handlers',
dest='websock_handlers',
default='.',
help='WebSocket handlers root directory.')
parser.add_option('-m', '--websock-handlers-map-file',
'--websock_handlers_map_file',
dest='websock_handlers_map_file',
default=None,
help=('WebSocket handlers map file. '
'Each line consists of alias_resource_path and '
'existing_resource_path, separated by spaces.'))
parser.add_option('-s', '--scan-dir', '--scan_dir', dest='scan_dir',
default=None,
help=('WebSocket handlers scan directory. '
'Must be a directory under websock_handlers.'))
parser.add_option('--allow-handlers-outside-root-dir',
'--allow_handlers_outside_root_dir',
dest='allow_handlers_outside_root_dir',
action='store_true',
default=False,
help=('Scans WebSocket handlers even if their canonical '
'path is not under websock_handlers.'))
parser.add_option('-d', '--document-root', '--document_root',
dest='document_root', default='.',
help='Document root directory.')
parser.add_option('-x', '--cgi-paths', '--cgi_paths', dest='cgi_paths',
default=None,
help=('CGI paths relative to document_root.'
'Comma-separated. (e.g -x /cgi,/htbin) '
'Files under document_root/cgi_path are handled '
'as CGI programs. Must be executable.'))
parser.add_option('-t', '--tls', dest='use_tls', action='store_true',
default=False, help='use TLS (wss://)')
parser.add_option('-k', '--private-key', '--private_key',
dest='private_key',
default='', help='TLS private key file.')
parser.add_option('-c', '--certificate', dest='certificate',
default='', help='TLS certificate file.')
parser.add_option('--tls-client-auth', dest='tls_client_auth',
action='store_true', default=False,
help='Requires TLS client auth on every connection.')
parser.add_option('--tls-client-ca', dest='tls_client_ca', default='',
help=('Specifies a pem file which contains a set of '
'concatenated CA certificates which are used to '
'validate certificates passed from clients'))
parser.add_option('--basic-auth', dest='use_basic_auth',
action='store_true', default=False,
help='Requires Basic authentication.')
parser.add_option('--basic-auth-credential',
dest='basic_auth_credential', default='test:test',
help='Specifies the credential of basic authentication '
'by username:password pair (e.g. test:test).')
parser.add_option('-l', '--log-file', '--log_file', dest='log_file',
default='', help='Log file.')
# Custom log level:
# - FINE: Prints status of each frame processing step
parser.add_option('--log-level', '--log_level', type='choice',
dest='log_level', default='warn',
choices=['fine',
'debug', 'info', 'warning', 'warn', 'error',
'critical'],
help='Log level.')
parser.add_option('--deflate-log-level', '--deflate_log_level',
type='choice',
dest='deflate_log_level', default='warn',
choices=['debug', 'info', 'warning', 'warn', 'error',
'critical'],
help='Log level for _Deflater and _Inflater.')
parser.add_option('--thread-monitor-interval-in-sec',
'--thread_monitor_interval_in_sec',
dest='thread_monitor_interval_in_sec',
type='int', default=-1,
help=('If positive integer is specified, run a thread '
'monitor to show the status of server threads '
'periodically in the specified inteval in '
'second. If non-positive integer is specified, '
'disable the thread monitor.'))
parser.add_option('--log-max', '--log_max', dest='log_max', type='int',
default=_DEFAULT_LOG_MAX_BYTES,
help='Log maximum bytes')
parser.add_option('--log-count', '--log_count', dest='log_count',
type='int', default=_DEFAULT_LOG_BACKUP_COUNT,
help='Log backup count')
parser.add_option('--allow-draft75', dest='allow_draft75',
action='store_true', default=False,
help='Allow draft 75 handshake')
parser.add_option('--strict', dest='strict', action='store_true',
default=False, help='Strictly check handshake request')
parser.add_option('-q', '--queue', dest='request_queue_size', type='int',
default=_DEFAULT_REQUEST_QUEUE_SIZE,
help='request queue size')
return parser
class ThreadMonitor(threading.Thread):
daemon = True
def __init__(self, interval_in_sec):
threading.Thread.__init__(self, name='ThreadMonitor')
self._logger = util.get_class_logger(self)
self._interval_in_sec = interval_in_sec
def run(self):
while True:
thread_name_list = []
for thread in threading.enumerate():
thread_name_list.append(thread.name)
self._logger.info(
"%d active threads: %s",
threading.active_count(),
', '.join(thread_name_list))
time.sleep(self._interval_in_sec)
def _parse_args_and_config(args):
parser = _build_option_parser()
# First, parse options without configuration file.
temporary_options, temporary_args = parser.parse_args(args=args)
if temporary_args:
logging.critical(
'Unrecognized positional arguments: %r', temporary_args)
sys.exit(1)
if temporary_options.config_file:
try:
config_fp = open(temporary_options.config_file, 'r')
except IOError, e:
logging.critical(
'Failed to open configuration file %r: %r',
temporary_options.config_file,
e)
sys.exit(1)
config_parser = ConfigParser.SafeConfigParser()
config_parser.readfp(config_fp)
config_fp.close()
args_from_config = []
for name, value in config_parser.items('pywebsocket'):
args_from_config.append('--' + name)
args_from_config.append(value)
if args is None:
args = args_from_config
else:
args = args_from_config + args
return parser.parse_args(args=args)
else:
return temporary_options, temporary_args
def _main(args=None):
options, args = _parse_args_and_config(args=args)
os.chdir(options.document_root)
_configure_logging(options)
# TODO(tyoshino): Clean up initialization of CGI related values. Move some
# of code here to WebSocketRequestHandler class if it's better.
options.cgi_directories = []
options.is_executable_method = None
if options.cgi_paths:
options.cgi_directories = options.cgi_paths.split(',')
if sys.platform in ('cygwin', 'win32'):
cygwin_path = None
# For Win32 Python, it is expected that CYGWIN_PATH
# is set to a directory of cygwin binaries.
# For example, websocket_server.py in Chromium sets CYGWIN_PATH to
# full path of third_party/cygwin/bin.
if 'CYGWIN_PATH' in os.environ:
cygwin_path = os.environ['CYGWIN_PATH']
util.wrap_popen3_for_win(cygwin_path)
def __check_script(scriptpath):
return util.get_script_interp(scriptpath, cygwin_path)
options.is_executable_method = __check_script
if options.use_tls:
if not (_HAS_SSL or _HAS_OPEN_SSL):
logging.critical('TLS support requires ssl or pyOpenSSL module.')
sys.exit(1)
if not options.private_key or not options.certificate:
logging.critical(
'To use TLS, specify private_key and certificate.')
sys.exit(1)
if options.tls_client_auth:
if not options.use_tls:
logging.critical('TLS must be enabled for client authentication.')
sys.exit(1)
if not _HAS_SSL:
logging.critical('Client authentication requires ssl module.')
if not options.scan_dir:
options.scan_dir = options.websock_handlers
if options.use_basic_auth:
options.basic_auth_credential = 'Basic ' + base64.b64encode(
options.basic_auth_credential)
try:
if options.thread_monitor_interval_in_sec > 0:
# Run a thread monitor to show the status of server threads for
# debugging.
ThreadMonitor(options.thread_monitor_interval_in_sec).start()
# Share a Dispatcher among request handlers to save time for
# instantiation. Dispatcher can be shared because it is thread-safe.
options.dispatcher = dispatch.Dispatcher(
options.websock_handlers,
options.scan_dir,
options.allow_handlers_outside_root_dir)
if options.websock_handlers_map_file:
_alias_handlers(options.dispatcher,
options.websock_handlers_map_file)
warnings = options.dispatcher.source_warnings()
if warnings:
for warning in warnings:
logging.warning('mod_pywebsocket: %s' % warning)
server = WebSocketServer(options)
server.serve_forever()
except Exception, e:
logging.critical('mod_pywebsocket: %s' % e)
logging.critical('mod_pywebsocket: %s' % util.get_stack_trace())
sys.exit(1)
if __name__ == '__main__':
_main(sys.argv[1:])
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