Sending a HTTP request from within a plugin

Brad Fitzpatrick brad at
Fri Jul 27 18:49:45 UTC 2007

Gearman still easiest, as things stand now.

On Wed, 25 Jul 2007, Robby Dermody wrote:

> Thanks Brad,
> What may simplify things is that perlbal and the component that would be
> getting the HTTP request are always going to be on the same box (and this is
> the only thing I will need to speak HTTP with). Since that is the case, I
> have other possibilities to make a request besides sockets/HTTP such as
> named pipes. Really all I need to do is to pass some data from perlbal to my
> app during an end_proxy_request situation. Does the change the nature of the
> beast any, or is Gearman still the recommended way to go?
> Robby
> -----Original Message-----
> From: Brad Fitzpatrick [mailto:brad at]
> Sent: Wednesday, July 25, 2007 5:34 PM
> To: Robby Dermody
> Cc: perlbal at
> Subject: Re: Sending a HTTP request from within a plugin
> There's no Danga::Socket-compatible HTTP client, and our POE/Danga:Socket
> integration work isn't yet done, so at this point the only easy (and
> recommended) option for you is to use Gearman.  You can use
> Gearman::Client::Async to use external gearmand servers/workers (which can
> then do HTTP requests if needed), or you can embed a Gearman::Server in
> the perlbal server process and have child processes under the perlbal
> doing their work speaking Gearman protocol over pipes between parent/child
> processes.  Either way, you get persistent connections too, so rate of
> requests isn't a problem.
> On Wed, 25 Jul 2007, Robby Dermody wrote:
> > Hi guys,
> >
> > I'm writing a perlbal plugin where when I receive a certain event
> > (specifically, end_proxy_request), I need to make a HTTP request out to an
> > external resource. Basically this is because the I have a reproxy setup
> > going with perlbal and need to keep state in my environment around when a
> > particular resource request starts and stops for each given client. The
> > request will be very simple with only 1 or 2 GET parameters (no POST
> data),
> > and I will just need to receive a single equally basic HTTP response,
> which
> > should be a 200 OK.
> >
> > I was looking at the source and it looks like I could use Danga::Socket
> > directly for this, however given the fact that these HTTP requests could
> be
> > going out quite frequently (and all to the same host), I'd probably want
> to
> > make the requests on a persistent connection (using KeepAlives).
> >
> > It's been a long time since I've worked in perl though, so I was wondering
> > if there was a built in mechanism in perlbal or somewhere else I could use
> > to make these requests, or some code I could start with to implement this.
> >
> > Thanks,
> >
> > Robby
> >
> >
> >

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