Re: [Libevent-users] How http client can send back message to server?

[Christian Dahlqvist <acdahlqvist@xxxxxxxxx>]

I am a bit confused about your description how the flow of messages
between client and server works. It seems like the client is trying to
act as a server once the first request has been sent, which I would
expect would confuse any standard HTTP server. Should the client not
instead send a new request containing the heartbeat acknowledgement
instead of a HTTP response?

Christian


On Fri, Dec 10, 2010 at 8:31 PM, Zulfiqer Sekender <zulfiqers@xxxxxxxxx> wrote:
> Thanks a lot for the reply. We are using 2.0.7. Now I will install 2.0.9 and
> will check if that version solves this problem. This client program is
> communicating with open source http erlang mochiweb server. That server
> should be fine as that server is doing that functionality (exchanging
> heartbeat with another http client written in Java) properly.
> Could anybody (who is here with more evhttp experience) please help me?
> Any sort of help will be highly appreciated.
> Thanks again.
>
>
>
> ________________________________
> From: Nick Mathewson <nickm@xxxxxxxxxxxxx>
> To: libevent-users@xxxxxxxxxxxxx
> Sent: Fri, December 10, 2010 3:02:56 PM
> Subject: Re: [Libevent-users] How http client can send back message to
> server?
>
> On Fri, Dec 10, 2010 at 12:18 PM, Zulfiqer Sekender <zulfiqers@xxxxxxxxx>
> wrote:
>> Hi,
>>
>> I have to develop a simple http client which can communicate with a http
>> server. The client is sending evhttp_make_request(). The server sends
>> "HT:"
>> heartbeat in response after certain time and when the client gets "HT:"
>> each
>> time it will send "HA:" as heartbeat acknowledgement. Transfering of "HT:"
>> &
>> "HA:" should go on.
>>
>> I developed the following client program. It gets "HT:" and tries to send
>> back "HA:". But server never gets the "HA:".
>>
>> I will highly appreciate any help regarding this. Please, let me know what
>> wrong I am doing and how to do it correctly.  (Intentionally I left few
>> commented out lines to show what else options I tried.)
>
> You didn't say what version of Libevent you are trying this with.
> 2.0.9-rc fixes some evhttp bugs that might or might not be relevant to
> you here.
>
> You might also want to post a small example of the server-side of this
> code; otherwise it's not actually possible to test & run it.
>
> Failing that, your best bet is probably to look through the http.c
> source code in Libevent to see what part of the code would need to
> change to make this work for you.  I'm not at all sure whether and to
> what degree evhttp currently supports what you want to do.  Anybody
> else here with more evhttp experience want to chime in?
>
> yrs,
> --
> Nick
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