William Lallemand dec25c3e14 MINOR: httpclient: support payload within a buffer
httpclient_req_gen() takes a payload argument which can be use to put a
payload in the request. This payload can only fit a request buffer.

This payload can also be specified by the "body" named parameter within
the lua. httpclient.

It is also used within the CLI httpclient when specified as a CLI
payload with "<<".
2021-10-27 10:19:41 +02:00
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