.\" generated by cd2nroff 0.1 from CURLOPT_WS_OPTIONS.md
.TH CURLOPT_WS_OPTIONS 3 "2025-07-07" libcurl
.SH NAME
CURLOPT_WS_OPTIONS \- WebSocket behavior options
.SH SYNOPSIS
.nf
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_WS_OPTIONS, long bitmask);
.fi
.SH DESCRIPTION
Pass a long with a bitmask to tell libcurl about specific WebSocket
behaviors.

To detach a WebSocket connection and use the \fIcurl_ws_send(3)\fP and
\fIcurl_ws_recv(3)\fP functions after the HTTP upgrade procedure, set the
\fICURLOPT_CONNECT_ONLY(3)\fP option to 2L.

Available bits in the bitmask
.IP "CURLWS_RAW_MODE (1)"
Deliver "raw" WebSocket traffic to the \fICURLOPT_WRITEFUNCTION(3)\fP
callback.

In raw mode, libcurl does not handle pings or any other frame for the
application.
.IP "CURLWS_NOAUTOPONG (2)"
Disable the automatic reply to PING messages. This means users must
send a PONG message with \fIcurl_ws_send(3)\fP. This feature is added with
version 8.14.0.
.SH DEFAULT
0
.SH PROTOCOLS
This functionality affects ws only
.SH EXAMPLE
.nf
int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode res;
    curl_easy_setopt(curl, CURLOPT_URL, "ws://example.com/");
    /* tell curl we deal with all the WebSocket magic ourselves */
    curl_easy_setopt(curl, CURLOPT_WS_OPTIONS, (long)CURLWS_RAW_MODE);
    res = curl_easy_perform(curl);
    curl_easy_cleanup(curl);
  }
}
.fi
.SH AVAILABILITY
Added in curl 7.86.0
.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_CONNECT_ONLY (3),
.BR curl_ws_recv (3),
.BR curl_ws_send (3)