[erlang-questions] HTTP client for OAuth

Benoit Chesneau bchesneau@REDACTED
Wed Feb 24 17:49:08 CET 2016

On Wed, Feb 24, 2016 at 4:49 PM Garrett Smith <g@REDACTED> wrote:

> I'm taking time off from typing -module attributes to focus on my backlog
> of other important problems...
> I'm interfacing with various OAuth providers within an Erlang application
> and I need a simple HTTP client. I've poked around the ecosystem and have
> learned that HTTP clients are the new MySQL clients in terms of
> which-one-to-freakin-use.
> As I'm using this for user auth, memory and performance are
> considerations, though far behind stability and actual-workingness.
> (In the interest of the later, I'd traditionally wrap OS curl processes
> because curl is known to actually work, but that _might_ not be feasible as
> the application grows. Come to think of it, I'm going to start with a curl
> wrapper and iterate by measuring, so never mind.)
> I'd love to learn from the field experience of others. Is anyone really,
> really happy with the HTTP client he or she is using for semi-heavy loads
> like user auth?
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Well I would advise hackney of course :) The pool part is completely
optional  and it will be gone in the week release anyway. It's used as a
large scale in some companies handing millions of connections. It provides
you a REST client API, streaming (transparent or not) and so on.

If you want to do in a minimal way, I extracted the parser in a library:

and then uses it with gen_tcp.

It provides same kind of API than you find with erlang:decode_parser/3 but
with less issue. For example decode_parser is not able to parse this:

(not sure why yet, investigating it).

Hope it's useful, any feedback is welcome. I  would be interested to know
what your choice at then end and why. I always enjoy to improve hackney
when it's possible.

- benoît
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