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view src/event/ngx_event_posted.h @ 7623:72b792bb3885

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HTTP/2: fixed socket leak with an incomplete HEADERS frame. A connection could get stuck without timers if a client has partially sent the HEADERS frame such that it was split on the individual header boundary. In this case, it cannot be processed without the rest of the HEADERS frame. The fix is to call ngx_http_v2_state_headers_save() in this case. Normally, it would be called from the ngx_http_v2_state_header_block() handler on the next iteration, when there is not enough data to continue processing. This isn't the case if recv_buffer became empty and there's no more data to read.
author Sergey Kandaurov <pluknet@nginx.com>
date Wed, 05 Feb 2020 16:29:23 +0300
parents f1720934c45b
children
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/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_EVENT_POSTED_H_INCLUDED_
#define _NGX_EVENT_POSTED_H_INCLUDED_


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


#define ngx_post_event(ev, q)                                                 \
                                                                              \
    if (!(ev)->posted) {                                                      \
        (ev)->posted = 1;                                                     \
        ngx_queue_insert_tail(q, &(ev)->queue);                               \
                                                                              \
        ngx_log_debug1(NGX_LOG_DEBUG_CORE, (ev)->log, 0, "post event %p", ev);\
                                                                              \
    } else  {                                                                 \
        ngx_log_debug1(NGX_LOG_DEBUG_CORE, (ev)->log, 0,                      \
                       "update posted event %p", ev);                         \
    }


#define ngx_delete_posted_event(ev)                                           \
                                                                              \
    (ev)->posted = 0;                                                         \
    ngx_queue_remove(&(ev)->queue);                                           \
                                                                              \
    ngx_log_debug1(NGX_LOG_DEBUG_CORE, (ev)->log, 0,                          \
                   "delete posted event %p", ev);



void ngx_event_process_posted(ngx_cycle_t *cycle, ngx_queue_t *posted);
void ngx_event_move_posted_next(ngx_cycle_t *cycle);


extern ngx_queue_t  ngx_posted_accept_events;
extern ngx_queue_t  ngx_posted_next_events;
extern ngx_queue_t  ngx_posted_events;


#endif /* _NGX_EVENT_POSTED_H_INCLUDED_ */