QUIC: improved debug logging. - wording in log->action is adjusted to match function names. - connection close steps are made obvious and start with "quic close" prefix: *1 quic close initiated rc:-4 *1 quic close silent drain:0 timedout:1 *1 quic close resumed rc:-1 *1 quic close resumed rc:-1 *1 quic close resumed rc:-4 *1 quic close completed this makes it easy to understand if particular "close" record is an initial cause or lasting process, or the final one. - cases of close without quic connection now logged as "packet rejected": *14 quic run *14 quic packet rx long flags:ec version:1 *14 quic packet rx hs len:61 *14 quic packet rx dcid len:20 00000000000002c32f60e4aa2b90a64a39dc4228 *14 quic packet rx scid len:8 81190308612cd019 *14 quic expected initial, got handshake *14 quic packet done rc:-1 level:hs decr:0 pn:0 perr:0 *14 quic packet rejected rc:-1, cleanup connection *14 reusable connection: 0 this makes it easy to spot early packet rejection and avoid confuse with quic connection closing (which in fact was not even created). - packet processing summary now uses same prefix "quic packet done rc:" - added debug to places where packet was rejected without any reason logged

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


#ifndef _NGX_ARRAY_H_INCLUDED_
#define _NGX_ARRAY_H_INCLUDED_


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


typedef struct {
    void        *elts;
    ngx_uint_t   nelts;
    size_t       size;
    ngx_uint_t   nalloc;
    ngx_pool_t  *pool;
} ngx_array_t;


ngx_array_t *ngx_array_create(ngx_pool_t *p, ngx_uint_t n, size_t size);
void ngx_array_destroy(ngx_array_t *a);
void *ngx_array_push(ngx_array_t *a);
void *ngx_array_push_n(ngx_array_t *a, ngx_uint_t n);


static ngx_inline ngx_int_t
ngx_array_init(ngx_array_t *array, ngx_pool_t *pool, ngx_uint_t n, size_t size)
{
    /*
     * set "array->nelts" before "array->elts", otherwise MSVC thinks
     * that "array->nelts" may be used without having been initialized
     */

    array->nelts = 0;
    array->size = size;
    array->nalloc = n;
    array->pool = pool;

    array->elts = ngx_palloc(pool, n * size);
    if (array->elts == NULL) {
        return NGX_ERROR;
    }

    return NGX_OK;
}


#endif /* _NGX_ARRAY_H_INCLUDED_ */