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net: http_client: Fix payload issue on HTTP upload

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Bug fix and improved `payload` handling in `http_client_req`.

Changes to `http_client_req` behaviour:

If the user provides `payload_len` it is used to generate the
`Content-Length` header. This is done even if `payload_cb` is used to
provide the actual data. If no `payload_len` is specified then no
`Content-Length` is generated.

If `payload_cb` is provided it is called to send the payload data.
Otherwise `payload` is used as the payload buffer and sent. If
`payload_len` is not zero, it is used as the size of `payload`.
Otherwise `payload` is assumed to be a string and `strlen` is used to
determine its size. This is to maintain current behaviour and not break
existing samples.

Fixes #24431

Signed-off-by: Arvin Farahmand <arvinf@ip-logix.com>
This commit is contained in:
Arvin Farahmand 2020-04-16 21:53:30 -04:00 • committed by Jukka Rissanen
commit 6d5f3debaa
2 changed files with 44 additions and 35 deletions
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4
include/net/http_client.h
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@ -238,7 +238,9 @@ struct http_request {
/** Payload, may be NULL */
const char *payload;
/** Payload length, may be 0. Only used if payload field is not NULL */
/** Payload length is used to calculate Content-Length. Set to 0
* for chunked transfers.
*/
size_t payload_len;
/** User supplied callback function to call when optional headers need