Hi,

setting the reuse timeout to 0 or making a one shot client does not help. But 
while googling I found the exact issue described on the Pharo issue tracker: 
https://pharo.fogbugz.com/f/cases/18588/

The proposed workaround also worked for me:
ZnNetworkingUtils default socketStreamClass: SocketStream.

Cheers,
Uko

> On 25 Dec 2017, at 05:42, Andrew Glynn <aglyn...@gmail.com> wrote:
> 
> The only time I've seen that behaviour is with the combination of a slow 
> server and a proxy such as CloudFlare where the sysadmin has set tcp_wait to 
> some ridiculously small number.  Have you tried setting the connection reuse 
> timeout to 0, or setting 'beOneShot'?
> 
> Zinc doesn't support the additions in HTTP/2, but I can't offhand think of 
> any reason that should cause that specific behaviour. I've had sufficient 
> problems with HTTP/2 over slow connections (I live where there are no land 
> lines of any kind) that I replaced the HTTP/2 code in Nginx with code from 
> pureftpd in order to access my server at home when I'm out.
> 
> Andrew
> 
> On 2017-12-24, 3:30 PM, "Pharo-users on behalf of Yuriy Tymchuk" 
> <pharo-users-boun...@lists.pharo.org on behalf of yuriy.tymc...@me.com> wrote:
> 
>    Hi,
> 
>    I’m trying to hack something with Pharo 6.1 and Phillips Hue[1] (they have 
> a simple REST API). When I try to do a GET request with Zinc like this:
> 
>    ZnClient new
>       url: 
> 'http://192.168.0.115:80/api/1028d66426293e821ecfd9ef1a0731df/lights/';
>       get
> 
>    I get a “ConnectionClosed: Connection closed while waiting for data” 
> exception. The service provides a JSON response that I can get without a 
> problem by using a web browser or curl. Also if I try to access fewer data 
> (e.g. adding /1 to the url, so it gets only one resource) I don’t get the 
> exception.
> 
>    What is even more strange, when I resume the exception I get the desired 
> response i.e. this works:
> 
>    [ ZnClient new
>       url: 
> 'http://192.168.0.115:80/api/1028d66426293e821ecfd9ef1a0731df/lights/';
>       get ]
> 
>       on: ConnectionClosed
>       do: [ :ex |
>               ex resumeUnchecked: ex defaultResumeValue ]
> 
>    Of course I cannot share the server that is on my local network for 
> resting, but maybe anyone knows it there are any known issues with Zinc, or 
> if there are ways for me to debug the issue further.
> 
>    Cheers.
>    Uko
> 
>    [1]: https://www.developers.meethue.com
> 
> 
> 
> 


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