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e3fe020089
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
69 lines
1.4 KiB
Markdown
69 lines
1.4 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLINFO_XFER_ID
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Section: 3
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Source: libcurl
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See-also:
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- CURLINFO_CONN_ID (3)
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- curl_easy_getinfo (3)
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- curl_easy_setopt (3)
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Protocol:
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- All
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---
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# NAME
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CURLINFO_XFER_ID - get the ID of a transfer
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_XFER_ID,
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curl_off_t *xfer_id);
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~~~
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# DESCRIPTION
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Pass a pointer to a *curl_off_t* to receive the identifier of the
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current/last transfer done with the handle. Stores -1 if no transfer
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has been started yet for the handle.
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The transfer id is unique among all transfers performed using the same
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connection cache. This is implicitly the case for all transfers in the
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same multi handle.
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# EXAMPLE
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~~~c
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode res;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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/* Perform the request */
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res = curl_easy_perform(curl);
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if(!res) {
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curl_off_t xfer_id;
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res = curl_easy_getinfo(curl, CURLINFO_XFER_ID, &xfer_id);
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if(!res) {
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printf("Transfer ID: %" CURL_FORMAT_CURL_OFF_T "\n", xfer_id);
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}
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}
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}
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}
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~~~
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# AVAILABILITY
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Added in 8.2.0
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# RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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