Re: Callback right after an Easy is Assigned a Connection?

>
> So how long is that TTL?
>

The TTL was 10 seconds, in the meantime we've pushed it back to 30 seconds.

No there isn't. That's not a feature curl offers.
>
> I would probably rather recommend that you do the queueing of handles
> yourself
> and that you generate the necessary headers just before you let curl
> perform
> the transfer so that the TTL is still within time.
>

That's what I was afraid of, and already started implementing.

Thanks for taking the time to answer.
Damon

On Wed, Jun 17, 2020 at 5:43 PM Daniel Stenberg <daniel_at_haxx.se> wrote:

> On Mon, 15 Jun 2020, Damon Earp via curl-library wrote:
>
> > Currently we are generating the 'Authorization:' header before
> submitting
> > the easy handle to our multi handle. While this has been working for us,
> > we've had several events where the multi's backlog of easy handles is
> long
> > enough that the HMAC TTL expires. We don't have HTTP/1.1 pipelining
> enabled
> > (got the impression pipelining is being removed from libcurl), and do
> set
> > connection limits to help keep our clients from overloading servers.
>
> So how long is that TTL? And yes, Pipelining was never totally reliable
> and
> has been removed for a while now.
>
> > 1. Are we doing this wrong? Manually setting the Date header and
> calculating
> > the HMAC before submitting? We still support older curls and haven't
> looked
> > into newer features, as old as v7.29 sadly.
>
> Yes that is... very old. But yes it sounds like a doable approach.
>
> > 2. Is there a straight forward way for curl to inform an application
> that it
> > is ready to use a connection, allowing the application to alter the
> headers?
>
> No there isn't. That's not a feature curl offers.
>
> I would probably rather recommend that you do the queueing of handles
> yourself
> and that you generate the necessary headers just before you let curl
> perform
> the transfer so that the TTL is still within time.
>
> --
>
> / daniel.haxx.se | Commercial curl support up to 24x7 is available!
> | Private help, bug fixes, support, ports, new features
> | https://www.wolfssl.com/contact/
>

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Received on 2020-06-18