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Daniel Stenberg e3fe020089

docs/libcurl: generate PROTOCOLS from meta-data

Remove the PROTOCOLS section from the source files completely and
instead generate them based on the header data in the curldown files.

It also generates TLS backend information for options marked for TLS as
protocol.

Closes #13175

2024-03-23 18:13:03 +01:00

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SPDX-License-Identifier

Title

Section

Source

See-also

Protocol

curl

CURLMOPT_TIMERDATA

libcurl

CURLMOPT_SOCKETFUNCTION (3)

CURLMOPT_TIMERFUNCTION (3)

All

NAME

CURLMOPT_TIMERDATA - custom pointer to pass to timer callback

SYNOPSIS

#include <curl/curl.h>

CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_TIMERDATA, void *pointer);

DESCRIPTION

A data pointer to pass to the timer callback set with the CURLMOPT_TIMERFUNCTION(3) option.

This pointer is not touched by libcurl but is only be passed in to the timer callback's clientp argument.

DEFAULT

NULL

EXAMPLE

struct priv {
  void *custom;
};

static int timerfunc(CURLM *multi, long timeout_ms, void *clientp)
{
 struct priv *mydata = clientp;
 printf("our ptr: %p\n", mydata->custom);

 if(timeout_ms) {
   /* this is the new single timeout to wait for */
 }
 else {
   /* delete the timeout, nothing to wait for now */
 }
}

int main(void)
{
  struct priv mydata;
  CURLM *multi = curl_multi_init();
  curl_multi_setopt(multi, CURLMOPT_TIMERFUNCTION, timerfunc);
  curl_multi_setopt(multi, CURLMOPT_TIMERDATA, &mydata);
}

AVAILABILITY

Added in 7.16.0

RETURN VALUE

Returns CURLM_OK if the option is supported, and CURLM_UNKNOWN_OPTION if not.

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