MINOR: httpclient: implement a simple HTTP Client API
This commit implements a very simple HTTP Client API.
A client can be operated by several functions:
- httpclient_new(), httpclient_destroy(): create
and destroy the struct httpclient instance.
- httpclient_req_gen(): generate a complete HTX request using the
the absolute URL, the method and a list of headers. This request
is complete and sets the HTX End of Message flag. This is limited
to small request we don't need a body.
- httpclient_start() fill a sockaddr storage with a IP extracted
from the URL (it cannot resolve an fqdm for now), start the
applet. It also stores the ptr of the caller which could be an
appctx or something else.
- hc->ops contains a list of callbacks used by the
HTTPClient, they should be filled manually after an
httpclient_new():
* res_stline(): the client received a start line, its content
will be stored in hc->res.vsn, hc->res.status, hc->res.reason
* res_headers(): the client received headers, they are stored in
hc->res.hdrs.
* res_payload(): the client received some payload data, they are
stored in the hc->res.buf buffer and could be extracted with the
httpclient_res_xfer() function, which takes a destination buffer
as a parameter
* res_end(): this callback is called once we finished to receive
the response.
4 files changed