我有一些用Twisted实现的websocket协议,当我使用“ws”连接时,它们工作得很好,但是当我启用安全websockets时,__init__
方法会被调用两次。更具体地说,它被调用一次,然后连接显然失败,调用connectionLost,然后再次调用它__init__
,这次连接保持打开状态。在
下面的代码就是一个例子。当我与wss连接时,websocket协议的__init__
中的日志行被调用两次,但普通websockets不会发生这种情况。在
导入套接字 从日期时间导入日期时间 从扭曲的互联网进口电抗器
from twisted.internet.ssl import DefaultOpenSSLContextFactory
from autobahn.twisted.websocket import WebSocketServerProtocol, WebSocketServerFactory, listenWS
import txaio
txaio.use_twisted()
CERT_KEY = "certificate.key"
CERT_PATH = "certificate.crt"
def log(msg):
print("{}: {}".format(str(datetime.now()), msg))
class TestProtocol(WebSocketServerProtocol):
def __init__(self):
super(TestProtocol, self).__init__()
log("Test protocol init")
def connectionLost(self, reason):
WebSocketServerProtocol.connectionLost(self, reason)
log("Connection closed: Reason is {}".format(reason))
class TestProtocolFactory(WebSocketServerFactory):
protocol = TestProtocol
def init_websocket_protocol(factory_cls, port):
try:
key, crt = CERT_KEY, CERT_PATH
context_factory = DefaultOpenSSLContextFactory(key, crt)
connection_string = "wss://localhost:{}".format(str(port))
factory = factory_cls(connection_string)
listenWS(factory, contextFactory=context_factory)
log("Port {} bound to test websocket server".format(str(port)))
except socket.error as e:
log("Server was unable to bind to a new port: ".format(str(e)))
def main():
init_websocket_protocol(TestProtocolFactory, 9000)
reactor.run()
if __name__ == '__main__':
main()
现在推荐的API是使用端点。另外,
twisted.internet.ssl.CertificateOptions
是TLS连接的首选API。因此,通过这些更改,上面的代码将如下所示:当我运行这段代码并指向Firefox时,它会连接一次。您使用的浏览器端代码是什么样子的?在
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