[英]sendMessage from outside in autobahn running in separate thread
I want to call sendMessage
method from outside of MyServerProtocol
class and send a message to connected clients.我想从
MyServerProtocol
类外部调用sendMessage
方法并向连接的客户端发送消息。 I use threading
to do this.我使用
threading
来做到这一点。
When I use this code :当我使用此代码时:
from autobahn.twisted.websocket import WebSocketServerProtocol, WebSocketServerFactory
from twisted.internet import reactor
import threading
class MyServerProtocol(WebSocketServerProtocol):
def onConnect(self, request):
print("Client connecting: {0}".format(request.peer))
def onOpen(self):
print("WebSocket connection open.")
def onMessage(self, payload, isBinary):
if isBinary:
print("Binary message received: {0} bytes".format(len(payload)))
else:
print("Text message received: {0}".format(payload.decode('utf8')))
self.sendMessage(payload, isBinary)
def onClose(self, wasClean, code, reason):
print("WebSocket connection closed: {0}".format(reason))
class Connection(threading.Thread):
def __init__(self):
super(Connection, self).__init__()
def run(self):
self.factory = WebSocketServerFactory("ws://localhost:9000", debug=False)
self.factory.protocol = MyServerProtocol
reactor.listenTCP(9000, self.factory)
reactor.run(installSignalHandlers=0)
def send(self, data):
reactor.callFromThread(self.factory.protocol.sendMessage, self.factory.protocol, data)
connection = Connection()
connection.daemon = True
connection.start()
connection.send('test')
this error happens:发生此错误:
connection.send('test')
reactor.callFromThread(self.factory.protocol.sendMessage, self.factory.protocol, data)
AttributeError: 'Connection' object has no attribute 'factory'
If I try to comment out the line connection.send('test')
, this error happens:如果我尝试注释掉
connection.send('test')
,则会发生此错误:
TypeError: 'NoneType' object is not iterable
What is the problem with my code ?我的代码有什么问题?
Am I doing this the right way?我这样做是否正确? Or is there another way to send message to clients from outside of the protocol class?
或者是否有另一种方法可以从协议类之外向客户端发送消息?
Thanks.谢谢。
is [there] another way to send clients message from outside of server class?
[有]另一种从服务器类外部发送客户端消息的方法吗?
I do something like this to send message.我做这样的事情来发送消息。 I use
twisted
to run my web app.我使用
twisted
来运行我的网络应用程序。
import json
from autobahn.twisted.websocket import WebSocketServerProtocol
from twisted.internet import reactor
class MyProtocol(WebSocketServerProtocol):
connections = list()
def onConnect(self, request):
self.connections.append(self)
def onClose(self, wasClean, code, reason):
self.connections.remove(self)
@classmethod
def broadcast_message(cls, data):
payload = json.dumps(data, ensure_ascii = False).encode('utf8')
for c in set(cls.connections):
reactor.callFromThread(cls.sendMessage, c, payload)
# Somewhere else
MyProtocol.broadcast_message({'greeting': 'Hello world'})
I do not know if it is The Right Way ™, but it works well for me.我不知道它是否是The Right Way ™,但它对我来说效果很好。
add self.factory to your "init(self):" see below:将 self.factory 添加到您的“init(self):”中,如下所示:
from autobahn.twisted.websocket import WebSocketServerProtocol, WebSocketServerFactory
from twisted.internet import reactor
import threading
class MyServerProtocol(WebSocketServerProtocol):
def onConnect(self, request):
print("Client connecting: {0}".format(request.peer))
def onOpen(self):
print("WebSocket connection open.")
def onMessage(self, payload, isBinary):
if isBinary:
print("Binary message received: {0} bytes".format(len(payload)))
else:
print("Text message received: {0}".format(payload.decode('utf8')))
self.sendMessage(payload, isBinary)
def onClose(self, wasClean, code, reason):
print("WebSocket connection closed: {0}".format(reason))
class Connection(threading.Thread):
def __init__(self,factory):
super(Connection, self).__init__()
self.factory=WebSocketServerFactory("ws://localhost:9000", debug=False)
def run(self):
self.factory.protocol = MyServerProtocol()
reactor.listenTCP(9000, self.factory)
reactor.run(installSignalHandlers=0)
def send(self, data):
reactor.callFromThread(self.factory.protocol.sendMessage, self.factory.protocol, data)
connection = Connection()
connection.daemon = True
connection.start()
connection.send('test')
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