我正在嘗試使用Twisted with LineReceiver協議通過網絡發送文件。我看到的問題是,當我讀取二進制文件並嘗試發送塊時,他們根本不發送。Python通過網絡扭曲發送大文件
我讀使用file:
import json
import time
import threading
from twisted.internet import reactor, threads
from twisted.protocols.basic import LineReceiver
from twisted.internet import protocol
MaximumMsgSize = 15500
trySend = True
connectionToServer = None
class ClientInterfaceFactory(protocol.Factory):
def buildProtocol(self, addr):
return WoosterInterfaceProtocol(self._msgProcessor, self._logger)
class ClientInterfaceProtocol(LineReceiver):
def connectionMade(self):
connectionToServer = self
def _DecodeMessage(self, rawMsg):
header, body = json.loads(rawMsg)
return (header, json.loads(body))
def ProcessIncomingMsg(self, rawMsg, connObject):
# Decode raw message.
decodedMsg = self._DecodeMessage(rawMsg)
self.ProccessTransmitJobToNode(decodedMsg, connObject)
def _BuildMessage(self, id, msgBody = {}):
msgs = []
fullMsgBody = json.dumps(msgBody)
msgBodyLength = len(fullMsgBody)
totalParts = 1 if msgBodyLength <= MaximumMsgSize else \
int(math.ceil(msgBodyLength/MaximumMsgSize))
startPoint = 0
msgBodyPos = 0
for partNo in range(totalParts):
msgBodyPos = (partNo + 1) * MaximumMsgSize
header = {'ID' : id, 'MsgParts' : totalParts,
'MsgPart' : partNo }
msg = (header, fullMsgBody[startPoint:msgBodyPos])
jsonMsg = json.dumps(msg)
msgs.append(jsonMsg)
startPoint = msgBodyPos
return (msgs, '')
def ProccessTransmitJobToNode(self, msg, connection):
rootDir = '../documentation/configs/Wooster'
exportedFiles = ['consoleLog.txt', 'blob.dat']
params = {
'Status' : 'buildStatus',
'TaskID' : 'taskID',
'Name' : 'taskName',
'Exports' : len(exportedFiles),
}
msg, statusStr = self._BuildMessage(101, params)
connection.sendLine(msg[0])
for filename in exportedFiles:
with open (filename, "rb") as exportFileHandle:
data = exportFileHandle.read().encode('base64')
params = {
ExportFileToMaster_Tag.TaskID : taskID,
ExportFileToMaster_Tag.FileContents : data,
ExportFileToMaster_Tag.Filename : filename
}
msgs, _ = self._BuildMessage(MsgID.ExportFileToMaster, params)
for m in msgs:
connection.sendLine(m)
def lineReceived(self, data):
threads.deferToThread(self.ProcessIncomingMsg, data, self)
def ConnectFailed(reason):
print 'Connection failed..'
reactor.callLater(20, reactor.callFromThread, ConnectToServer)
def ConnectToServer():
print 'Connecting...'
from twisted.internet.endpoints import TCP4ClientEndpoint
endpoint = TCP4ClientEndpoint(reactor, 'localhost', 8181)
deferItem = endpoint.connect(factory)
deferItem.addErrback(ConnectFailed)
netThread = threading.Thread(target=reactor.run, kwargs={"installSignalHandlers": False})
netThread.start()
reactor.callFromThread(ConnectToServer)
factory = ClientInterfaceFactory()
protocol = ClientInterfaceProtocol()
while 1:
time.sleep(0.01)
if connectionToServer == None: continue
if trySend == True:
protocol.ProccessTransmitJobToNode(None, None)
trySend = False
有什麼我做錯了文件發送,當寫爲多部分或者有一個以上的文件中奮鬥着它的?
如果發生單個寫入,則m 注意:我已經用一段粗略的示例代碼更新了問題,希望它有意義。
正在發送的消息不是一個列表,它是一個Json dumps()輸出。我返回一個消息列表,但爲了循環瀏覽它們 –
對不起,它應該是消息,_ = self._Build ........ –
是的,是的,它應該。 –