[Development] QtNetwork: using system proxy by default

Hausmann Simon Simon.Hausmann at digia.com
Thu Oct 11 16:05:17 CEST 2012


IMHO #4 gives the best out-of-the-box experience. 

Is there a way to do the blocking winapi call in a thread on app start-up maybe?

How do other apps (i.e. Chrome) handle this without blocking the user experience? 

Simon

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Sendt fra min Nokia N911.10.12 15:12 skrev Peter Hartmann:
Hello,

I remember this has been discussed before, but yet again: How about 
using the system proxy by default, at least on some platforms or by 
configure switch? Right now every app developer has to call 
QNetworkProxyFactory::setUseSystemConfiguration(true) in his code to use 
the system proxies.
On desktop you might want to avoid this depending on your app, but on 
mobile (e.g. Blackberry) it might happen that you just have to use the 
system configuration and it will not work without it.

IMO there are 4 options:

1. leave as it is, tell everybody to call above method in their app
2. just #ifdef for the platforms where it should be used automatically
3. introduce a configure switch "-use-system-proxy" or so (default no)
4. enable usage of system proxy globally


1. sounds a bit cumbersome for me; I prefer 2. for pragmatic reasons. If 
people think 3. is cleaner that is fine with me as well. As Shane told 
me, using the system proxy on Windows might lead to several seconds of 
delay until the synchronous method that determines the proxy returns, so 
for now 4. seems too risky.

Please suggest / comment etc.


Peter

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