ap_rwrite and timeout

[marc . despland]

Hello,

I am writing a module for Apache 2.0.59 that works like a proxy to  
expose a Dime Soap Web service over classical HTTP

The problem is when i send the content to the client, if the client  
closes the connection or pauses the download, i have to wait the  
timeout to detect the problem

The timeout is the Timeout directive of the server, is it possible to  
use a shorter timeout for my module ? or having something like  
ap_hard_time_out() ?

or how to use a function like poll with a request_rec ? to detect if  
the client is ready to receive a packet

Marc