mirror of https://github.com/curl/curl.git synced 2025-01-06 13:44:52 +08:00

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

1.4 KiB

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SPDX-License-Identifier

Title

Section

Source

See-also

Protocol

curl

CURLMOPT_SOCKETDATA

libcurl

CURLMOPT_SOCKETFUNCTION (3)

CURLMOPT_TIMERFUNCTION (3)

curl_multi_socket_action (3)

All

NAME

CURLMOPT_SOCKETDATA - custom pointer passed to the socket callback

SYNOPSIS

#include <curl/curl.h>

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

DESCRIPTION

A data pointer to pass to the socket callback set with the CURLMOPT_SOCKETFUNCTION(3) option.

This pointer is not touched by libcurl but is only passed in as the socket callback's clientp argument.

DEFAULT

NULL

EXAMPLE

struct priv {
  void *ours;
};

static int sock_cb(CURL *e, curl_socket_t s, int what, void *cbp, void *sockp)
{
  struct priv *p = sockp;
  printf("my ptr: %p\n", p->ours);

  if(what == CURL_POLL_REMOVE) {
    /* remove the socket from our collection */
  }
  if(what & CURL_POLL_IN) {
    /* wait for read on this socket */
  }
  if(what & CURL_POLL_OUT) {
    /* wait for write on this socket */
  }

  return 0;
}

int main(void)
{
  struct priv setup;
  CURLM *multi = curl_multi_init();
  /* ... use socket callback and custom pointer */
  curl_multi_setopt(multi, CURLMOPT_SOCKETFUNCTION, sock_cb);
  curl_multi_setopt(multi, CURLMOPT_SOCKETDATA, &setup);
}

AVAILABILITY

Added in 7.15.4

RETURN VALUE

Returns CURLM_OK.

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