Python Twisted Cliente
-
13-10-2019 - |
Pregunta
Tengo este sencillo trenzado de cliente que se conecta a un servidor Trenzados consulta un índice.
Si ve fn. connectionMade()
en class SpellClient
, es difícil codificado-la query
. Hizo que para propósitos de prueba. ¿Cómo se podría pasar esta consulta desde fuera de esta clase?
El código -
from twisted.internet import reactor
from twisted.internet import protocol
# a client protocol
class SpellClient(protocol.Protocol):
"""Once connected, send a message, then print the result."""
def connectionMade(self):
query = 'abased'
self.transport.write(query)
def dataReceived(self, data):
"As soon as any data is received, write it back."
print "Server said:", data
self.transport.loseConnection()
def connectionLost(self, reason):
print "connection lost"
class SpellFactory(protocol.ClientFactory):
protocol = SpellClient
def clientConnectionFailed(self, connector, reason):
print "Connection failed - goodbye!"
reactor.stop()
def clientConnectionLost(self, connector, reason):
print "Connection lost - goodbye!"
reactor.stop()
# this connects the protocol to a server runing on port 8000
def main():
f = SpellFactory()
reactor.connectTCP("localhost", 8090, f)
reactor.run()
# this only runs if the module was *not* imported
if __name__ == '__main__':
main()
Solución
Protocols, like SpellClient, have access to their factory as self.factory.
...so there would be a number of ways to do this, but one way would be to create another method on SpellFactory, such as setQuery, and then access that from the client...
#...in SpellFactory:
def setQuery(self, query):
self.query = query
#...and in SpellClient:
def connectionMade(self):
self.transport.write(self.factory.query)
...so in main:
f = SpellFactory()
f.setQuery('some query')
...
...or you could just create an _init_ method for SpellFactory, and pass it in there.
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