def sendEvent(self):
#called to send data out of the outbound queue - triggered when the sam bridge allows further sending
assert self.state == 'connected', 'wrong state, expected "connected", got "%s"' % (self.state,)
self.sendable = True
if self.outQueueSize == 0:
#nothing to send
data = None
if self.waitingForClose:
#was waiting for close and done sending, so close it now
self._close()
elif self.outQueueSize <= 32768:
#fits into a single message
data = ''.join(self.outQueue)
dataSize = len(data)
self.outQueue.clear()
self.outQueueSize = 0
else:
#too much data for a single message
data = deque()
dataSize = 0
while dataSize < 32768:
#add chunks until the limit is reached
dataChunk = self.outQueue.popleft()
dataChunkLen = len(dataChunk)
if dataSize + dataChunkLen < 32768:
#take entire chunk
data.append(dataChunk)
dataSize += dataChunkLen
self.outQueueSize -= dataChunkLen
else:
#only take a part of the chunk
useableDataChunkLen = 32768 - dataSize
data.append(dataChunk[:useableDataChunkLen])
self.outQueue.appendleft(dataChunk[useableDataChunkLen:])
self.outQueueSize -= useableDataChunkLen
dataSize += useableDataChunkLen
data = ''.join(data)
if data is not None:
#something to send
if (not self.waitingForClose) and \
self.outQueueSize < self.outMaxQueueSize and \
(self.outQueueSize + dataSize) >= self.outMaxQueueSize:
#buffer was full and is not full anymore
self.i2pSockStatus.setSendable(True, self.connId)
#send data to the sam bridge
self.sendFunc(SamMessages.streamSendMessage(self.samId, data))
#remember data, in case sam rejects it
self.outMessage = data
#don't send anything until the sam bridge send us its status
self.sendable = False
