156 Commits

Author SHA1 Message Date
William Lallemand
b70203017b BUG/MINOR: httpclient: fix uninitialized sl variable
Reported by coverity in ticket #1355

  CID 1461505:  Memory - illegal accesses  (UNINIT)
  Using uninitialized value "sl".

Fix the problem by initializing sl to NULL.
2021-08-20 11:53:16 +02:00
Willy Tarreau
0e72e40f7e BUG/MINOR: http_client: make sure to preset the proxy's default settings
Proxies must call proxy_preset_defaults() to initialize their settings
that are usually learned from defaults sections (e.g. connection retries,
pool purge delay etc). At the moment there was likely no impact, but not
doing so could cause trouble soon when using the client more extensively
or when new defaults are introduced and failed to be initialized.

No backport is needed.
2021-08-20 10:23:12 +02:00
William Lallemand
2484da5ebc MINOR: httpclient/cli: change the User-Agent to "HAProxy"
Change the User-Agent from "HAProxy HTTP client" to "HAProxy" as the
previous name is not valid according to RFC 7231#5.5.3.

This patch fixes issue #1354.
2021-08-19 15:55:19 +02:00
William Lallemand
03a4eb154f MINOR: httpclient/cli: implement a simple client over the CLI
This commit implements an HTTP Client over the CLI, this was made as
working example for the HTTP Client API.

It usable over the CLI by specifying a method and an URL:

    echo "httpclient GET http://127.0.0.1:8000/demo.file" | socat /tmp/haproxy.sock -

Only IP addresses are accessibles since the API does not allow to
resolve addresses yet.
2021-08-18 18:25:05 +02:00
William Lallemand
33b0d095cc 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.
2021-08-18 17:36:32 +02:00
William Lallemand
83614a9fbe MINOR: httpclient: initialize the proxy
Initialize a proxy which contain a server for the raw HTTP, and another
one for the HTTPS. This proxy will use the global server log definition
and the 'option httplog' directive.

This proxy is internal and will only be used for the HTTP Client API.
2021-08-18 17:35:48 +02:00