[Twisted-Python] Re: writing back to the connection is blocking my code

Thomas Hervé therve at free.fr
Fri Mar 21 09:25:16 EDT 2008

Quoting coder_gus <coder_gus at lavabit.com>:

> Agreed, I was talking about transport.tcpKeepAlive(). The thing I am
> asking (and call me stupid, but I am trying to figure it out for days
> now and no one seems to answer my question or is it me too stupid that
> can see the answer in front of my eyes) is how do I send data to
> clients that are connected to the twisted server waiting for data to be
> processed, without sending to the server any data or causing any event
> to the server?

This is where you are confused I think. There is no way to send data  
to clients if you don't have *any* events on the server. Because how  
would you now to send data if you don't have something telling you to  
do so? You should have a time event, or a network event from another  
client, or a GUI input, or whatever.

> In the link you guys showed me it's true that the data
> gets back to the clients, but only when the server receives other data,
> that is in the dataReceived method. How can I send it back to them
> (having a reference to each client's protocol class) without receiving
> data, client connecting etc. ?

It's not totally clear to understand what you're trying to achieve, so  
maybe you want to explain more clearly your problem. I suspect you  
want to use reactor.callLater, to generate a time event.


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