PlexKodiConnect/resources/lib/websocket_client.py

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# -*- coding: utf-8 -*-
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###############################################################################
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import json
import threading
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import Queue
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import websocket
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import ssl
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import xbmc
import utils
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###############################################################################
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@utils.logging
@utils.ThreadMethodsAdditionalSuspend('suspend_LibraryThread')
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@utils.ThreadMethods
class WebSocket(threading.Thread):
opcode_data = (websocket.ABNF.OPCODE_TEXT, websocket.ABNF.OPCODE_BINARY)
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def __init__(self, queue):
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self.ws = None
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# Communication with librarysync
self.queue = queue
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threading.Thread.__init__(self)
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def process(self, opcode, message):
if opcode not in self.opcode_data:
return False
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try:
message = json.loads(message)
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except Exception as ex:
self.logMsg('Error decoding message from websocket: %s' % ex, -1)
self.logMsg(message, -1)
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return False
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# Triage
typus = message.get('type')
if typus is None:
self.logMsg('No message type, dropping message: %s' % message, -1)
return False
# Drop everything we're not interested in
if typus not in ('playing', 'timeline'):
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return True
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# Put PMS message on queue and let libsync take care of it
try:
self.queue.put(message)
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return True
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except Queue.Full:
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# Queue only takes 200 messages. No worries if we miss one or two
self.logMsg('Queue is full, dropping PMS message %s' % message, 0)
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return False
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def receive(self, ws):
# Not connected yet
if ws is None:
raise websocket.WebSocketConnectionClosedException
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frame = ws.recv_frame()
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if not frame:
raise websocket.WebSocketException("Not a valid frame %s" % frame)
elif frame.opcode in self.opcode_data:
return frame.opcode, frame.data
elif frame.opcode == websocket.ABNF.OPCODE_CLOSE:
ws.send_close()
return frame.opcode, None
elif frame.opcode == websocket.ABNF.OPCODE_PING:
ws.pong("Hi!")
return None, None
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def getUri(self):
server = utils.window('pms_server')
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# Need to use plex.tv token, if any. NOT user token
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token = utils.window('plex_token')
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# Get the appropriate prefix for the websocket
if "https" in server:
server = server.replace('https', "wss")
else:
server = server.replace('http', "ws")
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uri = "%s/:/websockets/notifications" % server
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if token:
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uri += '?X-Plex-Token=%s' % token
return uri
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def run(self):
log = self.logMsg
# Currently not working due to missing SSL environment
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sslopt = {}
if utils.settings('sslverify') == "false":
sslopt["cert_reqs"] = ssl.CERT_NONE
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log("----===## Starting WebSocketClient ##===----", 0)
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threadStopped = self.threadStopped
threadSuspended = self.threadSuspended
while not threadStopped():
# In the event the server goes offline
while threadSuspended():
# Set in service.py
if self.ws is not None:
try:
self.ws.shutdown()
except:
pass
self.ws = None
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if threadStopped():
# Abort was requested while waiting. We should exit
log("##===---- WebSocketClient Stopped ----===##", 0)
return
xbmc.sleep(1000)
try:
self.process(*self.receive(self.ws))
except websocket.WebSocketTimeoutException:
# No worries if read timed out
pass
except websocket.WebSocketConnectionClosedException:
log("Connection closed, (re)connecting", 0)
uri = self.getUri()
try:
# Low timeout - let's us shut this thread down!
self.ws = websocket.create_connection(
uri,
timeout=1,
sslopt=sslopt,
enable_multithread=True)
except (IOError):
log("Error connecting", 0)
xbmc.sleep(1000)
except Exception as e:
log("Unknown exception encountered: %s" % e)
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try:
self.ws.shutdown()
except:
pass
self.ws = None
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pass
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log("##===---- WebSocketClient Stopped ----===##", 0)
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def stopThread(self):
"""
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Overwrite this method from ThreadMethods to close websockets
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"""
self.logMsg("Stopping websocket client thread.", 1)
self._threadStopped = True
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try:
self.ws.shutdown()
except:
pass