---
name: "wslay_event_config_set_allowed_rsv_bits"
section: "3"
platform: "linux"
package: "libwslay-doc"
version: "1.1.1-4"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/wslay_event_config_set_allowed_rsv_bits"
---

# wslay\_event\_config\_set\_allowed\_rsv\_bits(3)

Set allowed reserved bits

## NAME

wslay\_event\_config\_set\_allowed\_rsv\_bits - Set allowed reserved bits

## SYNOPSIS

\#include \<wslay/wslay.h\>

- **void wslay\_event\_config\_set\_allowed\_rsv\_bits(wslay\_event\_context\_ptr ctx, uint8\_t rsv)**

  ## DESCRIPTION

*wslay\_event\_config\_set\_allowed\_rsv\_bits()* sets a bit mask of allowed reserved bits (RSVs).  Currently only permitted values are **WSLAY\_RSV1\_BIT** to allow PMCE extension (see *RFC 7692*) or **WSLAY\_RSV\_NONE** to disable.

When bits other than **WSLAY\_RSV1\_BIT** is set in *rsv*, those bits are simply ignored.

The set value is used to check the validity of reserved bits for both transmission and reception of WebSocket frames.

## RETURN VALUE

This function always succeeds, and there is no return value.

## SEE ALSO

*wslay\_event\_queue\_fragmented\_msg()*, *wslay\_event\_queue\_fragmented\_msg\_ex()*

## AUTHOR

Tatsuhiro Tsujikawa

## COPYRIGHT

2023, 2015, Tatsuhiro Tsujikawa