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authorLance Stout <lancestout@gmail.com>2011-07-27 19:35:03 -0700
committerLance Stout <lancestout@gmail.com>2011-07-27 19:35:03 -0700
commite022b2a36c342b6a83d7c7f0a39dfb851cdfd2de (patch)
tree498fee1ef46e4bc6b90f9231cf52eeb0192adf54 /sleekxmpp/xmlstream
parentad032e5ed77cfd1ec354e68e49d755e004408d0e (diff)
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Add support for HTTP Proxy connections.
Diffstat (limited to 'sleekxmpp/xmlstream')
-rw-r--r--sleekxmpp/xmlstream/xmlstream.py75
1 files changed, 73 insertions, 2 deletions
diff --git a/sleekxmpp/xmlstream/xmlstream.py b/sleekxmpp/xmlstream/xmlstream.py
index 8b6c08b7..15bbe655 100644
--- a/sleekxmpp/xmlstream/xmlstream.py
+++ b/sleekxmpp/xmlstream/xmlstream.py
@@ -8,6 +8,7 @@
from __future__ import with_statement, unicode_literals
+import base64
import copy
import logging
import signal
@@ -23,6 +24,7 @@ try:
except ImportError:
import Queue as queue
+import sleekxmpp
from sleekxmpp.thirdparty.statemachine import StateMachine
from sleekxmpp.xmlstream import Scheduler, tostring
from sleekxmpp.xmlstream.stanzabase import StanzaBase, ET
@@ -107,7 +109,13 @@ class XMLStream(object):
stream_header -- The closing tag of the stream's root element.
use_ssl -- Flag indicating if SSL should be used.
use_tls -- Flag indicating if TLS should be used.
+ use_proxy -- Flag indicating that an HTTP Proxy should be used.
stop -- threading Event used to stop all threads.
+ proxy_config -- An optional dictionary with the following entries:
+ host -- The host offering proxy services.
+ port -- The port for the proxy service.
+ username -- Optional username for the proxy.
+ password -- Optional password for the proxy.
auto_reconnect -- Flag to determine whether we auto reconnect.
reconnect_max_delay -- Maximum time to delay between connection
@@ -180,6 +188,9 @@ class XMLStream(object):
self.use_ssl = False
self.use_tls = False
+ self.use_proxy = False
+
+ self.proxy_config = {}
self.default_ns = ''
self.stream_header = "<stream>"
@@ -322,6 +333,12 @@ class XMLStream(object):
log.debug('Waiting %s seconds before connecting.' % delay)
time.sleep(delay)
+ if self.use_proxy:
+ connected = self._connect_proxy()
+ if not connected:
+ self.reconnect_delay = delay
+ return False
+
if self.use_ssl and self.ssl_support:
log.debug("Socket Wrapped for SSL")
if self.ca_certs is None:
@@ -341,8 +358,10 @@ class XMLStream(object):
self.socket = ssl_socket
try:
- log.debug("Connecting to %s:%s" % self.address)
- self.socket.connect(self.address)
+ if not self.use_proxy:
+ log.debug("Connecting to %s:%s" % self.address)
+ self.socket.connect(self.address)
+
self.set_socket(self.socket, ignore=True)
#this event is where you should set your application state
self.event("connected", direct=True)
@@ -356,6 +375,58 @@ class XMLStream(object):
self.reconnect_delay = delay
return False
+ def _connect_proxy(self):
+ """Attempt to connect using an HTTP Proxy."""
+
+ # Extract the proxy address, and optional credentials
+ address = (self.proxy_config['host'], int(self.proxy_config['port']))
+ cred = None
+ if self.proxy_config['username']:
+ username = self.proxy_config['username']
+ password = self.proxy_config['password']
+
+ cred = '%s:%s' % (username, password)
+ if sys.version_info < (3, 0):
+ cred = bytes(cred)
+ else:
+ cred = bytes(cred, 'utf-8')
+ cred = base64.b64encode(cred).decode('utf-8')
+
+ # Build the HTTP headers for connecting to the XMPP server
+ headers = ['CONNECT %s:%s HTTP/1.0' % self.address,
+ 'Host: %s:%s' % self.address,
+ 'Proxy-Connection: Keep-Alive',
+ 'Pragma: no-cache',
+ 'User-Agent: SleekXMPP/%s' % sleekxmpp.__version__]
+ if cred:
+ headers.append('Proxy-Authorization: Basic %s' % cred)
+ headers = '\r\n'.join(headers) + '\r\n\r\n'
+
+ try:
+ log.debug("Connecting to proxy: %s:%s" % address)
+ self.socket.connect(address)
+ self.send_raw(headers, now=True)
+ resp = ''
+ while '\r\n\r\n' not in resp:
+ resp += self.socket.recv(1024).decode('utf-8')
+ log.debug('RECV: %s' % resp)
+
+ lines = resp.split('\r\n')
+ if '200' not in lines[0]:
+ self.event('proxy_error', resp)
+ log.error('Proxy Error: %s' % lines[0])
+ return False
+
+ # Proxy connection established, continue connecting
+ # with the XMPP server.
+ return True
+ except Socket.error as serr:
+ error_msg = "Could not connect to %s:%s. Socket Error #%s: %s"
+ self.event('socket_error', serr)
+ log.error(error_msg % (self.address[0], self.address[1],
+ serr.errno, serr.strerror))
+ return False
+
def disconnect(self, reconnect=False, wait=False):
"""
Terminate processing and close the XML streams.