74 lines
1.6 KiB
Markdown
74 lines
1.6 KiB
Markdown
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---
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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_PRETRANSFER_TIME
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Section: 3
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Source: libcurl
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See-also:
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- CURLINFO_CONNECT_TIME_T (3)
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- CURLINFO_PRETRANSFER_TIME_T (3)
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- curl_easy_getinfo (3)
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- curl_easy_setopt (3)
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---
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# NAME
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CURLINFO_PRETRANSFER_TIME - get the time until the file transfer start
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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_PRETRANSFER_TIME,
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double *timep);
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~~~
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# DESCRIPTION
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Pass a pointer to a double to receive the time, in seconds, it took from the
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start until the file transfer is just about to begin.
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This time-stamp includes all pre-transfer commands and negotiations that are
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specific to the particular protocol(s) involved. It includes the sending of
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the protocol-specific instructions that trigger a transfer.
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When a redirect is followed, the time from each request is added together.
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See also the TIMES overview in the curl_easy_getinfo(3) man page.
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# PROTOCOLS
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All
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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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double pretransfer;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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res = curl_easy_perform(curl);
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if(CURLE_OK == res) {
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res = curl_easy_getinfo(curl, CURLINFO_PRETRANSFER_TIME, &pretransfer);
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if(CURLE_OK == res) {
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printf("Time: %.1f", pretransfer);
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}
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}
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/* always cleanup */
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curl_easy_cleanup(curl);
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}
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}
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~~~
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# AVAILABILITY
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Added in 7.4.1
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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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