QUIC: separated path validation retransmit backoff. Path validation packets containing PATH_CHALLENGE frames are sent separately from regular frame queue, because of the need to use a decicated path and pad the packets. The packets are sent periodically, separately from the regular probe/lost detection mechanism. A path validation packet is resent up to 3 times, each time after PTO expiration, with increasing per-path PTO backoff.

/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_PARSE_H_INCLUDED_
#define _NGX_PARSE_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>


ssize_t ngx_parse_size(ngx_str_t *line);
off_t ngx_parse_offset(ngx_str_t *line);
ngx_int_t ngx_parse_time(ngx_str_t *line, ngx_uint_t is_sec);


#endif /* _NGX_PARSE_H_INCLUDED_ */