[Twisted-Python] does setTcpNoDelay() not work?

Gabriel Rossetti gabriel.rossetti at arimaz.com
Mon Aug 11 13:13:56 EDT 2008

Gabriel Rossetti wrote:
> Hello,
> I'm needing to send small packets to update a progress bar. My update 
> msgs were all being sent in big packets, so I tried setting 
> setTcpNoDelay() in connectionMade() but it doesn't change anything, is 
> it broken?
> Thank you,
> Gabriel
I an using code that I wrote using threads.deferToThread(), I wondered 
if it was blocking the reactor maybe, so I tried just using a plain 
deferToThread() call. Here's the code (without all the protocol stuff, 
it's executed when data come in.

    def loop(self):
        import time
        m = utils.createMessage("toto", "hello")
            print "Sending %s" % m.toXml()
            print "Sent!"


the TCP no delay option is turned on like I said before, the weird thing 
is that I have the same thing, all my msgs get sent in big blocks. 
Either the TCP no delay doesn't work, or the reactor is getting tied up. 
I don' t get it since I'm running the blocking code in a thread, the 
reactor should have nothing to do.

Thank you,

I know that I'm not returning a deferred, I am in my real code though, 
but this is just "debug" code.

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