curl/docs/libcurl/opts/CURLOPT_TIMEOUT_MS.3

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.TH CURLOPT_TIMEOUT_MS 3 "17 Jun 2014" libcurl libcurl
.SH NAME
CURLOPT_TIMEOUT_MS \- maximum time the transfer is allowed to complete
.SH SYNOPSIS
.nf
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TIMEOUT_MS, long timeout);
.fi
.SH DESCRIPTION
Pass a long as parameter containing \fItimeout\fP - the maximum time in
milliseconds that you allow the libcurl transfer operation to take. Normally,
name lookups can take a considerable time and limiting operations to less than
a few minutes risk aborting perfectly normal operations. This option may cause
libcurl to use the SIGALRM signal to timeout system calls.

If libcurl is built to use the standard system name resolver, that portion of
the transfer will still use full-second resolution for timeouts with a minimum
timeout allowed of one second.

In unix-like systems, this might cause signals to be used unless
\fICURLOPT_NOSIGNAL(3)\fP is set.

If both \fICURLOPT_TIMEOUT(3)\fP and \fICURLOPT_TIMEOUT_MS(3)\fP are set, the
value set last will be used.

Since this puts a hard limit for how long time a request is allowed to take,
it has limited use in dynamic use cases with varying transfer times. You are
then advised to explore \fICURLOPT_LOW_SPEED_LIMIT(3)\fP,
\fICURLOPT_LOW_SPEED_TIME(3)\fP or using \fICURLOPT_PROGRESSFUNCTION(3)\fP to
implement your own timeout logic.
.SH DEFAULT
Default timeout is 0 (zero) which means it never times out during transfer.
.SH PROTOCOLS
All
.SH EXAMPLE
.nf
CURL *curl = curl_easy_init();
if(curl) {
  curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");

  /* complete within 20000 milliseconds */
  curl_easy_setopt(curl, CURLOPT_TIMEOUT_MS, 20000L);

  curl_easy_perform(curl);
}
.fi
.SH AVAILABILITY
Always
.SH RETURN VALUE
Returns CURLE_OK
.SH "SEE ALSO"
.BR CURLOPT_TIMEOUT "(3), "
.BR CURLOPT_CONNECTTIMEOUT "(3), " CURLOPT_LOW_SPEED_LIMIT "(3), "