Merge remote-tracking branch 'upstream/master' into ticket_10

CHANGELOG.txt

@@ -1,3 +1,15 @@
+0.15.0 (2016-08-28)
+-------------------
+
+* Connections now force-close themselves after pings fail for a certain
+  timeframe, controllable via the new --ping-timeout option.
+
+* Badly-formatted websocket response messages now log to console in
+  all situations
+
+* Compatability with Twisted 16.3 and up
+
+
 0.14.3 (2016-07-21)
 -------------------
 

README.rst

@@ -1,14 +1,14 @@
 daphne
 ======
 
-.. image:: https://api.travis-ci.org/andrewgodwin/daphne.svg
+.. image:: https://api.travis-ci.org/django/daphne.svg
-    :target: https://travis-ci.org/andrewgodwin/daphne
+    :target: https://travis-ci.org/django/daphne
     
 .. image:: https://img.shields.io/pypi/v/daphne.svg
     :target: https://pypi.python.org/pypi/daphne
 
 Daphne is a HTTP, HTTP2 and WebSocket protocol server for
-`ASGI <http://channels.readthedocs.org/en/latest/asgi.html>`_, and developed
+`ASGI <https://channels.readthedocs.io/en/latest/asgi.html>`_, and developed
 to power Django Channels.
 
 It supports automatic negotiation of protocols; there's no need for URL
@@ -66,3 +66,16 @@ The header takes precedence if both are set. As with ``SCRIPT_ALIAS``, the value
 should start with a slash, but not end with one; for example::
 
     daphne --root-path=/forum django_project.asgi:channel_layer
+
+
+Maintenance and Security
+------------------------
+
+To report security issues, please contact security@djangoproject.com. For GPG
+signatures and more security process information, see
+https://docs.djangoproject.com/en/dev/internals/security/.
+
+To report bugs or request new features, please open a new GitHub issue.
+
+This repository is part of the Channels project. For the shepherd and maintenance team, please see the
+`main Channels readme <https://github.com/django/channels/blob/master/README.rst>`_.

daphne/__init__.py

@@ -1 +1 @@
-__version__ = "0.14.3"
+__version__ = "0.15.0"

daphne/access.py

@@ -24,6 +24,18 @@ class AccessLogGenerator(object):
                 length=details['size'],
             )
         # Websocket requests
+        elif protocol == "websocket" and action == "connecting":
+            self.write_entry(
+                host=details['client'],
+                date=datetime.datetime.now(),
+                request="WSCONNECTING %(path)s" % details,
+            )
+        elif protocol == "websocket" and action == "rejected":
+            self.write_entry(
+                host=details['client'],
+                date=datetime.datetime.now(),
+                request="WSREJECT %(path)s" % details,
+            )
         elif protocol == "websocket" and action == "connected":
             self.write_entry(
                 host=details['client'],

daphne/cli.py

@@ -106,6 +106,7 @@ class CommandLineInterface(object):
             help='The setting for the ASGI root_path variable',
             default="",
         )
+        self.server = None
         
     @classmethod
     def entrypoint(cls):
@@ -156,6 +157,11 @@ class CommandLineInterface(object):
             args.host = DEFAULT_HOST
 
         # Run server
+        logger.info(
+            "Starting server at %s, channel layer %s",
+            (args.unix_socket if args.unix_socket else "%s:%s" % (args.host, args.port)),
+            args.channel_layer,
+        )
         self.server = Server(
             channel_layer=channel_layer,
             host=args.host,
@@ -169,6 +175,7 @@ class CommandLineInterface(object):
             action_logger=AccessLogGenerator(access_log_stream) if access_log_stream else None,
             ws_protocols=args.ws_protocols,
             root_path=args.root_path,
+            verbosity=args.verbosity,
         )
         self.server.run()
 

daphne/http_protocol.py

@@ -110,6 +110,10 @@ class WebRequest(http.Request):
                     logger.debug("Connection %s did not get successful WS handshake.", self.reply_channel)
                 del self.factory.reply_protocols[self.reply_channel]
                 self.reply_channel = None
+                # Resume the producer so we keep getting data, if it's available as a method
+                if hasattr(self.channel, "resumeProducing"):
+                    self.channel.resumeProducing()
+
             # Boring old HTTP.
             else:
                 # Sanitize and decode headers, potentially extracting root path
@@ -173,6 +177,7 @@ class WebRequest(http.Request):
         try:
             self.factory.channel_layer.send("http.disconnect", {
                 "reply_channel": self.reply_channel,
+                "path": self.unquote(self.path),
             })
         except self.factory.channel_layer.ChannelFull:
             pass
@@ -276,12 +281,13 @@ class HTTPFactory(http.HTTPFactory):
 
     protocol = HTTPProtocol
 
-    def __init__(self, channel_layer, action_logger=None, timeout=120, websocket_timeout=86400, ping_interval=20, ping_timeout=30, ws_protocols=None, root_path=""):
+    def __init__(self, channel_layer, action_logger=None, timeout=120, websocket_timeout=86400, ping_interval=20, ping_timeout=30, ws_protocols=None, root_path="", websocket_connect_timeout=30):
         http.HTTPFactory.__init__(self)
         self.channel_layer = channel_layer
         self.action_logger = action_logger
         self.timeout = timeout
         self.websocket_timeout = websocket_timeout
+        self.websocket_connect_timeout = websocket_connect_timeout
         self.ping_interval = ping_interval
         # We track all sub-protocols for response channel mapping
         self.reply_protocols = {}
@@ -299,21 +305,29 @@ class HTTPFactory(http.HTTPFactory):
         if channel.startswith("http") and isinstance(self.reply_protocols[channel], WebRequest):
             self.reply_protocols[channel].serverResponse(message)
         elif channel.startswith("websocket") and isinstance(self.reply_protocols[channel], WebSocketProtocol):
-            # Ensure the message is a valid WebSocket one
+            # Switch depending on current socket state
-            unknown_message_keys = set(message.keys()) - {"bytes", "text", "close"}
+            protocol = self.reply_protocols[channel]
-            if unknown_message_keys:
+            # See if the message is valid
+            unknown_keys = set(message.keys()) - {"bytes", "text", "close", "accept"}
+            if unknown_keys:
                 raise ValueError(
-                    "Got invalid WebSocket reply message on %s - contains unknown keys %s" % (
+                    "Got invalid WebSocket reply message on %s - "
+                    "contains unknown keys %s (looking for either {'accept', 'text', 'bytes', 'close'})" % (
                         channel,
                         unknown_message_keys,
                     )
                 )
+            if message.get("accept", None) and protocol.state == protocol.STATE_CONNECTING:
+                protocol.serverAccept()
             if message.get("bytes", None):
-                self.reply_protocols[channel].serverSend(message["bytes"], True)
+                protocol.serverSend(message["bytes"], True)
             if message.get("text", None):
-                self.reply_protocols[channel].serverSend(message["text"], False)
+                protocol.serverSend(message["text"], False)
             if message.get("close", False):
-                self.reply_protocols[channel].serverClose()
+                if protocol.state == protocol.STATE_CONNECTING:
+                    protocol.serverReject()
+                else:
+                    protocol.serverClose()
         else:
             raise ValueError("Cannot dispatch message on channel %r" % channel)
 

daphne/server.py

@@ -1,12 +1,12 @@
 import logging
+import socket
 
 from twisted.internet import reactor, defer
-from twisted.logger import globalLogBeginner
+from twisted.logger import globalLogBeginner, STDLibLogObserver
 from twisted.internet.endpoints import serverFromString
 
 from .http_protocol import HTTPFactory
 
-
 logger = logging.getLogger(__name__)
 
 
@@ -28,6 +28,7 @@ class Server(object):
         ping_timeout=30,
         ws_protocols=None,
         root_path="",
+        verbosity=1
     ):
         self.channel_layer = channel_layer
 
@@ -46,12 +47,12 @@ class Server(object):
         self.http_timeout = http_timeout
         self.ping_interval = ping_interval
         self.ping_timeout = ping_timeout
-
         # If they did not provide a websocket timeout, default it to the
         # channel layer's group_expiry value if present, or one day if not.
         self.websocket_timeout = websocket_timeout or getattr(channel_layer, "group_expiry", 86400)
         self.ws_protocols = ws_protocols
         self.root_path = root_path
+        self.verbosity = verbosity
 
     def run(self):
         self.factory = HTTPFactory(
@@ -64,9 +65,11 @@ class Server(object):
             ws_protocols=self.ws_protocols,
             root_path=self.root_path,
         )
-
+        if self.verbosity <= 1:
             # Redirect the Twisted log to nowhere
             globalLogBeginner.beginLoggingTo([lambda _: None], redirectStandardIO=False, discardBuffer=True)
+        else:
+            globalLogBeginner.beginLoggingTo([STDLibLogObserver(__name__)])
 
         if "twisted" in self.channel_layer.extensions and False:
             logger.info("Using native Twisted mode on channel layer")
@@ -97,7 +100,12 @@ class Server(object):
         # Don't do anything if there's no channels to listen on
         if channels:
             delay = 0.01
+            try:
                 channel, message = self.channel_layer.receive_many(channels, block=False)
+            except Exception as e:
+                logger.error('Error at trying to receive messages: %s' % e)
+                delay = 5.00
+            else:
                 if channel:
                     delay = 0.00
                     # Deal with the message
@@ -119,7 +127,12 @@ class Server(object):
                 return
             channels = self.factory.reply_channels()
             if channels:
+                try:
                     channel, message = yield self.channel_layer.receive_many_twisted(channels)
+                except Exception as e:
+                    logger.error('Error at trying to receive messages: %s' % e)
+                    yield self.sleep(5.00)
+                else:
                     # Deal with the message
                     if channel:
                         try:

daphne/tests/test_http.py

@@ -66,3 +66,30 @@ class TestHTTPProtocol(TestCase):
         # Get the resulting message off of the channel layer, check root_path
         _, message = self.channel_layer.receive_many(["http.request"])
         self.assertEqual(message['root_path'], "/foobar /bar")
+
+    def test_http_disconnect_sets_path_key(self):
+        """
+        Tests http disconnect has the path key set, see https://channels.readthedocs.io/en/latest/asgi.html#disconnect
+        """
+        # Send a simple request to the protocol
+        self.proto.dataReceived(
+            b"GET /te%20st-%C3%A0/?foo=bar HTTP/1.1\r\n" +
+            b"Host: anywhere.com\r\n" +
+            b"\r\n"
+        )
+        # Get the request message
+        _, message = self.channel_layer.receive_many(["http.request"])
+
+        # Send back an example response
+        self.factory.dispatch_reply(
+            message['reply_channel'],
+            {
+                "status": 200,
+                "status_text": b"OK",
+                "content": b"DISCO",
+            }
+        )
+
+        # Get the disconnection notification
+        _, disconnect_message = self.channel_layer.receive_many(["http.disconnect"])
+        self.assertEqual(disconnect_message['path'], "/te st-à/")

daphne/ws_protocol.py

@@ -5,8 +5,9 @@ import six
 import time
 import traceback
 from six.moves.urllib_parse import unquote, urlencode
+from twisted.internet import defer
 
-from autobahn.twisted.websocket import WebSocketServerProtocol, WebSocketServerFactory
+from autobahn.twisted.websocket import WebSocketServerProtocol, WebSocketServerFactory, ConnectionDeny
 
 logger = logging.getLogger(__name__)
 
@@ -27,6 +28,7 @@ class WebSocketProtocol(WebSocketServerProtocol):
     def onConnect(self, request):
         self.request = request
         self.packets_received = 0
+        self.protocol_to_accept = None
         self.socket_opened = time.time()
         self.last_data = time.time()
         try:
@@ -78,8 +80,31 @@ class WebSocketProtocol(WebSocketServerProtocol):
                         ws_protocol = protocol
                         break
 
+        # Work out what subprotocol we will accept, if any
         if ws_protocol and ws_protocol in self.factory.protocols:
-            return ws_protocol
+            self.protocol_to_accept = ws_protocol
+        else:
+            self.protocol_to_accept = None
+
+        # Send over the connect message
+        try:
+            self.channel_layer.send("websocket.connect", self.request_info)
+        except self.channel_layer.ChannelFull:
+            # You have to consume websocket.connect according to the spec,
+            # so drop the connection.
+            self.muted = True
+            logger.warn("WebSocket force closed for %s due to connect backpressure", self.reply_channel)
+            # Send code 1013 "try again later" with close.
+            raise ConnectionDeny(code=503, reason="Connection queue at capacity")
+        else:
+            self.factory.log_action("websocket", "connecting", {
+                "path": self.request.path,
+                "client": "%s:%s" % tuple(self.client_addr) if self.client_addr else None,
+            })
+
+        # Make a deferred and return it - we'll either call it or err it later on
+        self.handshake_deferred = defer.Deferred()
+        return self.handshake_deferred
 
     @classmethod
     def unquote(cls, value):
@@ -93,17 +118,7 @@ class WebSocketProtocol(WebSocketServerProtocol):
 
     def onOpen(self):
         # Send news that this channel is open
-        logger.debug("WebSocket open for %s", self.reply_channel)
+        logger.debug("WebSocket %s open and established", self.reply_channel)
-        try:
-            self.channel_layer.send("websocket.connect", self.request_info)
-        except self.channel_layer.ChannelFull:
-            # You have to consume websocket.connect according to the spec,
-            # so drop the connection.
-            self.muted = True
-            logger.warn("WebSocket force closed for %s due to connect backpressure", self.reply_channel)
-            # Send code 1013 "try again later" with close.
-            self.sendCloseFrame(code=1013, isReply=False)
-        else:
         self.factory.log_action("websocket", "connected", {
             "path": self.request.path,
             "client": "%s:%s" % tuple(self.client_addr) if self.client_addr else None,
@@ -140,10 +155,31 @@ class WebSocketProtocol(WebSocketServerProtocol):
             # Send code 1013 "try again later" with close.
             self.sendCloseFrame(code=1013, isReply=False)
 
+    def serverAccept(self):
+        """
+        Called when we get a message saying to accept the connection.
+        """
+        self.handshake_deferred.callback(self.protocol_to_accept)
+        logger.debug("WebSocket %s accepted by application", self.reply_channel)
+
+    def serverReject(self):
+        """
+        Called when we get a message saying to accept the connection.
+        """
+        self.handshake_deferred.errback(ConnectionDeny(code=403, reason="Access denied"))
+        self.cleanup()
+        logger.debug("WebSocket %s rejected by application", self.reply_channel)
+        self.factory.log_action("websocket", "rejected", {
+            "path": self.request.path,
+            "client": "%s:%s" % tuple(self.client_addr) if self.client_addr else None,
+        })
+
     def serverSend(self, content, binary=False):
         """
         Server-side channel message to send a message.
         """
+        if self.state == self.STATE_CONNECTING:
+            self.serverAccept()
         self.last_data = time.time()
         logger.debug("Sent WebSocket packet to client for %s", self.reply_channel)
         if binary:
@@ -158,9 +194,9 @@ class WebSocketProtocol(WebSocketServerProtocol):
         self.sendClose()
 
     def onClose(self, wasClean, code, reason):
+        self.cleanup()
         if hasattr(self, "reply_channel"):
             logger.debug("WebSocket closed for %s", self.reply_channel)
-            del self.factory.reply_protocols[self.reply_channel]
             try:
                 if not self.muted:
                     self.channel_layer.send("websocket.disconnect", {
@@ -178,6 +214,13 @@ class WebSocketProtocol(WebSocketServerProtocol):
         else:
             logger.debug("WebSocket closed before handshake established")
 
+    def cleanup(self):
+        """
+        Call to clean up this socket after it's closed.
+        """
+        if hasattr(self, "reply_channel"):
+            del self.factory.reply_protocols[self.reply_channel]
+
     def duration(self):
         """
         Returns the time since the socket was opened
@@ -186,8 +229,13 @@ class WebSocketProtocol(WebSocketServerProtocol):
 
     def check_ping(self):
         """
-        Checks to see if we should send a keepalive ping.
+        Checks to see if we should send a keepalive ping/deny socket connection
         """
+        # If we're still connecting, deny the connection
+        if self.state == self.STATE_CONNECTING:
+            if self.duration() > self.main_factory.websocket_connect_timeout:
+                self.serverReject()
+        elif self.state == self.STATE_OPEN:
             if (time.time() - self.last_data) > self.main_factory.ping_interval:
                 self._sendAutoPing()
                 self.last_data = time.time()

setup.py

@@ -1,20 +1,22 @@
 import os
-import sys
+
 from setuptools import find_packages, setup
+
 from daphne import __version__
 
 # We use the README as the long_description
 readme_path = os.path.join(os.path.dirname(__file__), "README.rst")
-
+with open(readme_path) as fp:
+    long_description = fp.read()
 
 setup(
     name='daphne',
     version=__version__,
-    url='http://www.djangoproject.com/',
+    url='https://github.com/django/daphne',
     author='Django Software Foundation',
     author_email='foundation@djangoproject.com',
     description='Django ASGI (HTTP/WebSocket) server',
-    long_description=open(readme_path).read(),
+    long_description=long_description,
     license='BSD',
     zip_safe=False,
     package_dir={'twisted': 'daphne/twisted'},
@@ -22,10 +24,23 @@ setup(
     include_package_data=True,
     install_requires=[
         'asgiref>=0.13',
-        'twisted>=15.5,<16.3',
+        'twisted>=16.0',
         'autobahn>=0.12',
     ],
     entry_points={'console_scripts': [
         'daphne = daphne.cli:CommandLineInterface.entrypoint',
     ]},
+    classifiers=[
+        'Development Status :: 4 - Beta',
+        'Environment :: Web Environment',
+        'Intended Audience :: Developers',
+        'License :: OSI Approved :: BSD License',
+        'Operating System :: OS Independent',
+        'Programming Language :: Python',
+        'Programming Language :: Python :: 2',
+        'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.5',
+        'Topic :: Internet :: WWW/HTTP',
+    ],
 )