def close(self):
if getattr(self, 'socket', None) is not None:
asocket.close(self)
if self.callback is not None:
self.callback, cb = None, self.callback
cb.error()
def __init__(self, proxy, conn, post):
asocket.__init__(self, conn)
self.callback = None
self.post_negotiate = post
self._negotiating = False
if proxy is None:
proxy = {}
self._proxyinfo = proxy.copy()
self.mid = (self._proxyinfo.get('addr', ''), self._proxyinfo.get('port',0))
self.end = ('',0)
def __init__(self, *a, **k):
asocket.__init__(self, *a, **k)
self.set_terminator('\r\n\r\n')
self.push('HEAD / HTTP/1.0\r\n\r\n')
self.push_handler(lambda d: log.info(repr(d)))
def __repr__(self):
parentrepr = asocket.__repr__(self).strip('<>')
return '<%s, fileno=%r>' % (parentrepr, self._fileno)
def handle_close(self):
log.info('ProxySocket.handle_close - calling callback.error')
self.close()
asocket.handle_close(self)
def _pconnect(self):
asocket.connect(self, self.mid)
def _connectRealSocket(self):
self.sock = AsyncSocket(self.asyncSocketManager)
self.sock.connect((self.ip, self.port))
self.sockNum = self.sock.fileno()
self.realSockStatus.addConn(self.sockNum, self.destId)
self.realSockStatus.setWantsToSend(True, self.sockNum)
class SamBaseDestination:
def __init__(self, destId, asyncSocketManager, realSockStatus, log, ip, port,
sessionName, sessionType, sessionDirection, sessionOptions):
self.destId = destId
self.asyncSocketManager = asyncSocketManager
self.realSockStatus = realSockStatus
self.log = log
#session - stats
self.sessionName = sessionName
self.sessionType = sessionType
self.sessionDirection = sessionDirection
self.sessionOptions = sessionOptions
#session - state
self.sessionEstablished = False
self.sessionKey = None
#socket
self.sock = None
self.sockNum = None
self.ip = ip
self.port = port
self.connected = False
self.inMessage = None
self.inQueue = deque()
self.outQueue = deque()
self._connectRealSocket()
##internal functions - socket
def _connectRealSocket(self):
self.sock = AsyncSocket(self.asyncSocketManager)
self.sock.connect((self.ip, self.port))
self.sockNum = self.sock.fileno()
self.realSockStatus.addConn(self.sockNum, self.destId)
self.realSockStatus.setWantsToSend(True, self.sockNum)
def _closeRealSocket(self):
self.inMessage = None
self.outQueue.clear()
self.realSockStatus.removeConn(self.sockNum)
self.connected = False
self.sock.close()
self.sock = None
def _reconnectRealSocket(self):
self._closeRealSocket()
self._connectRealSocket()
def _sendOverRealSocket(self, data):
self.outQueue.append(data)
if len(self.outQueue) == 1:
#first message in buffer, add to sockets with send interest
self.realSockStatus.setWantsToSend(True, self.sockNum)
if self.log is not None:
self.log.debug("Send Message: \"%s\"", data.split('\n')[0])
##internal functions - destinations
def _establishedDestination(self):
pass
def _failDestination(self, reason):
self.sessionKey = None
self.sessionEstablished = False
self._reconnectRealSocket()
def _removeDestination(self):
self._closeRealSocket()
##internal functions - messages
def _handleCustomMessage(self, message):
if self.log is not None:
self.log.warn("Received unknown message from Sam bridge: \"%s\"", str(message))
def _handleNameLookup(self, message):
pass
def _handleMessages(self, messages):
for message in messages:
messageType = message['msgType']
messageParas = message['msgParas']
if messageType=='HELLO REPLY':
#handshake reply
if messageParas['RESULT'].upper()=='OK' and messageParas['VERSION']=='2.0':
#send session create message
assert len(self.outQueue)==0, "just handshaked and stuff to send?!"
self._sendOverRealSocket(SamMessages.sessionCreateMessage(self.sessionType, self.sessionName, self.sessionDirection, self.sessionOptions))
else:
#something borked
self._failDestination('Invalid HELLO REPLY: Result<%s> Version<%s>' % (messageParas['RESULT'], messageParas['VERSION']))
elif messageType=='SESSION STATUS':
#session established
if not messageParas['RESULT'].upper()=='OK':
#urgh
self._failDestination('Failed to setup session: "%s"' % (messageParas['RESULT'],))
else:
#ok, session is established
self.sessionEstablished = True
self._sendOverRealSocket('NAMING LOOKUP NAME=ME\n')
self._establishedDestination()
elif messageType=='NAMING REPLY':
#reply to destination request
if not messageParas['NAME'].upper() == 'ME':
self._handleNameLookup(message)
elif messageParas['RESULT'].upper() == 'OK':
self.sessionKey = messageParas['VALUE']
else:
self._handleCustomMessage(message)
##external functions - socket events
def errorEvent(self):
self._failDestination('Connection to SAM failed')
def sendEvent(self):
if not self.connected:
#connected, send handshake as soon as possible
self.connected = True
self.realSockStatus.setWantsToRecv(True, self.sockNum)
self.realSockStatus.setWantsToSend(False, self.sockNum)
self._sendOverRealSocket("HELLO VERSION MIN=2.0 MAX=2.0\n")
else:
#already connected, send data
assert len(self.outQueue) > 0, 'Empty outbuffer, but trying to send?!'
while len(self.outQueue) > 0:
#still something in the queue, try to send the next message
data = self.outQueue.popleft()
bytesSend = self.sock.send(data)
if bytesSend < len(data):
#not all data send, push remaining data back into queue and abort loop
self.outQueue.appendleft(data[bytesSend:])
break
if len(self.outQueue) == 0:
#managed to empty the queue, nothing to send anymore
self.realSockStatus.setWantsToSend(False, self.sockNum)
def recvEvent(self):
data = self.sock.recv()
dataLen = len(data)
messages = []
offset = 0
#process data
while not offset >= dataLen:
#loop until all received data was processed
if self.inMessage is None:
##there is no finished message that needs bulk data
endOfMessage = data.find('\n', offset)
if endOfMessage == -1:
#only the beginning of a message, store it in the inbound queue
self.inQueue.append(data[offset:])
offset = dataLen
else:
#the whole message or the ending
message = data[offset:endOfMessage]
offset = endOfMessage + 1
if len(self.inQueue) > 0:
#get the beginning of the message out of the queue
self.inQueue.append(message)
message = ''.join(self.inQueue)
self.inQueue.clear()
#parse message
if self.log is not None:
self.log.debug("Got Message: \"%s\"", message)
message = SamMessages.parseMessage(message)
#check if we need to wait for more data
if 'SIZE' in message['msgParas']:
message['Data'] = []
message['DataCurrentLen'] = 0
message['DataTargetLen'] = int(message['msgParas']['SIZE'])
self.inMessage = message
else:
messages.append(message)
else:
##only missing a few bytes here ...
assert len(self.inQueue) == 0, 'receiving data but stuff in the inqueue?!'
missingBytes = self.inMessage['DataTargetLen'] - self.inMessage['DataCurrentLen']
remainingBytes = dataLen - offset
if remainingBytes >= missingBytes:
#got all
if self.log is not None:
self.log.debug("Got missing %i bytes for message", missingBytes)
self.inMessage['Data'].append(data[offset:offset+missingBytes])
self.inMessage['DataCurrentLen'] += missingBytes
assert self.inMessage['DataCurrentLen'] == self.inMessage['DataTargetLen'], 'message finished but too short?!'
offset += missingBytes
messages.append(self.inMessage)
self.inMessage = None
else:
#still missing a bit
if self.log is not None:
self.log.debug("Got %i bytes for message but still missing %i bytes", remainingBytes, (missingBytes - remainingBytes))
self.inMessage['Data'].append(data[offset:])
self.inMessage['DataCurrentLen'] += remainingBytes
offset += remainingBytes
#handle messages
self._handleMessages(messages)
##external functions - destination
def getOwnDestination(self):
return self.sessionKey
def shutdown(self):
self._removeDestination()
##external functions - changing settings
def changeSessionAddress(self, ip=None, port=None, reconnect=False):
if ip is not None:
self.ip = ip
if port is not None:
self.port = port
if reconnect:
self._failDestination('SESSION_ADDR_CHANGE')
def changeSessionName(self, sessionName, reconnect=False):
self.sessionName = sessionName
if reconnect:
self._failDestination('SESSION_NAME_CHANGE')
def changeSessionOption(self, option, value, reconnect=False):
self.sessionOptions[option] = value
if reconnect:
self._failDestination('SESSION_OPTION_CHANGE')
def removeSessionOption(self, option, reconnect=False):
del self.sessionOptions[option]
if reconnect:
self._failDestination('SESSION_OPTION_CHANGE')
def replaceSessionOptions(self, sessionOptions, reconnect=False):
self.sessionOptions = sessionOptions
if reconnect:
self._failDestination('SESSION_OPTION_CHANGE')