ngtcp2_pkt_write_stateless_reset2
=================================

Synopsis
--------

*#include <ngtcp2/ngtcp2.h>*

.. function:: ngtcp2_ssize ngtcp2_pkt_write_stateless_reset2( uint8_t *dest, size_t destlen, const ngtcp2_stateless_reset_token *token, const uint8_t *rand, size_t randlen)

    
    `ngtcp2_pkt_write_stateless_reset2` writes Stateless Reset packet
    in the buffer pointed by *dest* whose length is *destlen*.  *token*
    must store the Stateless Reset Token.  *rand* specifies the random
    octets preceding Stateless Reset Token.  The length of *rand* is
    specified by *randlen* which must be at least
    :macro:`NGTCP2_MIN_STATELESS_RESET_RANDLEN` bytes long.
    
    If *randlen* is too long to write them all in the buffer, *rand* is
    written to the buffer as much as possible, and is truncated.
    
    This function returns the number of bytes written to the buffer, or
    one of the following negative error codes:
    
    :macro:`NGTCP2_ERR_NOBUF`
        Buffer is too small.
    :macro:`NGTCP2_ERR_INVALID_ARGUMENT`
        *randlen* is strictly less than
        :macro:`NGTCP2_MIN_STATELESS_RESET_RANDLEN`.
    
    This function has been available since v1.22.0.