.\" generated by cd2nroff 0.1 from CURLOPT_EXPECT_100_TIMEOUT_MS.md .TH CURLOPT_EXPECT_100_TIMEOUT_MS 3 "2025-02-07" libcurl .SH NAME CURLOPT_EXPECT_100_TIMEOUT_MS \- timeout for Expect: 100\-continue response .SH SYNOPSIS .nf #include 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)