[Pharo-project] ZnClient ConnectionTimedOut

Sven Van Caekenberghe sven at beta9.be
Wed May 4 08:17:03 CEST 2011

Hi Jimmie,

On 04 May 2011, at 00:53, Jimmie Houchin wrote:

> Hello,
> I am happily use ZincHttpComponents, specifically ZnClient for my application.

That's good to hear.

> I make a request to the Python server part of my application which retrieves data from another server. This at times takes longer than the provided "timeout" for a connection.
> I am currently doing,  ZnClient get:  url.
> How can I increase the "timeout" for retrieving my data.

I know it is a bit confusing, but there are different HTTP clients inside Zn. 

ZnClient is the simplest one, it can only to one-shot requests, optionally with basic authentication. It supports proxies.

ZnFixedClient is a special client to repeatedly talk to the same host:port and reuse open connections, if possible. This makes it potentially faster.

ZnUserAgent and its subclass ZnHttpClient constitute a more sophisticated client with a richer API. Of these, ZnHttpClient has a more builder like API. They can follow redirects, allow the setting of timeout and other parameter and can do digest authentication.

To make a long story short, to do a GET with a custom timeout you can do:

| settings |
settings := (ZnUserAgentSettings defaultSettingsClass new) timeout: 60.
ZnHttpClient new
	settings: settings;
	url: 'http://zn.stfx.eu/random/256';

#get returns the response contents. If you want to access the actual ZnResponse (to see if the request was actually successful) use #response after doing a #get.

Let me know if this solves your problem or not. Zn is quite flexible, it all depends on your needs.

> Any help greatly appreciated.
> Thanks.
> Jimmie



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