.\" generated by cd2nroff 0.1 from CURLOPT_EXPECT_100_TIMEOUT_MS.md
.TH CURLOPT_EXPECT_100_TIMEOUT_MS 3 "2025-06-27" libcurl
.SH NAME
CURLOPT_EXPECT_100_TIMEOUT_MS \- timeout for Expect: 100\-continue response
.SH SYNOPSIS
.nf
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_EXPECT_100_TIMEOUT_MS,
                          long milliseconds);
.fi
.SH DESCRIPTION
Pass a long to tell libcurl the number of \fImilliseconds\fP to wait for a
server response with the HTTP status 100 (Continue), 417 (Expectation Failed)
or similar after sending an HTTP request containing an Expect: 100\-continue
header. If this times out before a response is received, the request body is
sent anyway.
.SH DEFAULT
1000 milliseconds
.SH PROTOCOLS
This functionality affects http only
.SH EXAMPLE
.nf
int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");

    /* wait 3 seconds for 100-continue */
    curl_easy_setopt(curl, CURLOPT_EXPECT_100_TIMEOUT_MS, 3000L);

    curl_easy_perform(curl);
  }
}
.fi
.SH AVAILABILITY
Added in curl 7.36.0
.SH RETURN VALUE
\fIcurl_easy_setopt(3)\fP returns a CURLcode indicating success or error.

CURLE_OK (0) means everything was OK, non\-zero means an error occurred, see
\fIlibcurl\-errors(3)\fP.
.SH SEE ALSO
.BR CURLOPT_HTTPPOST (3),
.BR CURLOPT_POST (3)