Keepalive connections now respect lingering_timeout on shutdown. During graceful shutdown keepalive connections are now closed only after at least lingering_timeout of inactivity. To do so, c->idle is only set on keepalive connections after lingering_timeout expires. This ensures that the connection close race will less likely result in connections being reset when a client sends a request at the same time when the connection is closed by ngx_close_idle_connections() during graceful shutdown.

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


#ifndef _NGX_SHA1_H_INCLUDED_
#define _NGX_SHA1_H_INCLUDED_


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


typedef struct {
    uint64_t  bytes;
    uint32_t  a, b, c, d, e, f;
    u_char    buffer[64];
} ngx_sha1_t;


void ngx_sha1_init(ngx_sha1_t *ctx);
void ngx_sha1_update(ngx_sha1_t *ctx, const void *data, size_t size);
void ngx_sha1_final(u_char result[20], ngx_sha1_t *ctx);


#endif /* _NGX_SHA1_H_INCLUDED_ */