[erlang-questions] Network connections fail when starting rebar app using "console" parameter

[YD Jiang]

Maybe have a network capture to determine why the ehostdown happen.
especially you can compare the worked capture with the failed one.

On Thu, Apr 12, 2018 at 12:29 AM Whealy, Chris <chris.whealy@REDACTED> wrote:

> Hi Roger
>
> My Cowboy app has a dependency on iBrowse - which has been working fine up
> until trying to start the app using “console”.
>
> ibrowse:start(),
> ibrowse:set_dest("download.geonames.org", 80, [{max_sessions, 10},
> {max_pipeline_size, 25}]),
>
> Then I spawn another process to fetch some files from genomes.org and
> wait for the results.  The spawned process is just a wrapper around ibrowse:send_req(Url,
> [{"If-None-Match", Etag}], get) that fires off an HTTP GET request to Url
> for a given Etag.
>
> This all works fine when using the “start" parameter, but fails when using
> “console”…
>
> Regards
>
> *Chris Whealy*
>
> SAP Cloud Platform | Strategy & Product Management | Team
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> On 11 Apr 2018, at 17:07, Roger Lipscombe <roger@REDACTED> wrote:
>
> On 11 April 2018 at 15:44, Whealy, Chris <chris.whealy@REDACTED> wrote:
>
>> Hi All
>>
>> I have a Cowboy app that at startup time, downloads various files from
>> another web server.  I’m using rebar to create a release, and this all
>> works fine when I start the app using the “start” parameter
>>
>> $ _build/default/rel/geo_server/bin/geo_server start
>>
>> But all the downloads fail when I use the “console” parameter
>>
>> $ _build/default/rel/geo_server/bin/geo_server console
>>
>> No other network conditions have changed, but now all the HTTP
>> connections fail with {conn_failed,{error,ehostdown}} which clearly is
>> not the case...
>>
>> Are extra parameters needed when starting the app using “console”?
>>
>
> Not usually. What are you using to download the files from the other web
> server?
>
>
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