SPDY: send output queue after processing of read event. During the processing of input some control frames can be added to the queue. And if there were no writing streams at the moment, these control frames might be left unsent for a long time (or even forever). This long delay is especially critical for PING replies since a client can consider connection as broken and then resend exactly the same request over a new connection, which is not safe in case of non-idempotent HTTP methods.

/*
 * 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>


#if (NGX_HAVE_OPENSSL_SHA1_H)
#include <openssl/sha.h>
#else
#include <sha.h>
#endif


typedef SHA_CTX  ngx_sha1_t;


#define ngx_sha1_init    SHA1_Init
#define ngx_sha1_update  SHA1_Update
#define ngx_sha1_final   SHA1_Final


#endif /* _NGX_SHA1_H_INCLUDED_ */