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annotate src/event/ngx_event_connect.h @ 6272:b6a665bf858a

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HTTP/2: fix indirect reprioritization. Previously, streams that were indirectly reprioritized (either because of a new exclusive dependency on their parent or because of removal of their parent from the dependency tree), didn't have their pointer to the parent node updated. This broke detection of circular dependencies and, as a result, nginx worker would crash due to stack overflow whenever such dependency was introduced. Found with afl-fuzz. Signed-off-by: Piotr Sikora <piotrsikora@google.com>
author Piotr Sikora <piotrsikora@google.com>
date Thu, 01 Oct 2015 20:25:55 -0700
parents c8acea7c7041
children 8f038068f4bc
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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5 */
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8 #ifndef _NGX_EVENT_CONNECT_H_INCLUDED_
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9 #define _NGX_EVENT_CONNECT_H_INCLUDED_
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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14 #include <ngx_event.h>
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16
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17 #define NGX_PEER_KEEPALIVE 1
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18 #define NGX_PEER_NEXT 2
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19 #define NGX_PEER_FAILED 4
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20
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21
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22 typedef struct ngx_peer_connection_s ngx_peer_connection_t;
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23
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24 typedef ngx_int_t (*ngx_event_get_peer_pt)(ngx_peer_connection_t *pc,
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25 void *data);
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26 typedef void (*ngx_event_free_peer_pt)(ngx_peer_connection_t *pc, void *data,
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27 ngx_uint_t state);
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28 #if (NGX_SSL)
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29
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30 typedef ngx_int_t (*ngx_event_set_peer_session_pt)(ngx_peer_connection_t *pc,
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31 void *data);
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32 typedef void (*ngx_event_save_peer_session_pt)(ngx_peer_connection_t *pc,
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33 void *data);
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34 #endif
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36
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37 struct ngx_peer_connection_s {
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38 ngx_connection_t *connection;
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39
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40 struct sockaddr *sockaddr;
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41 socklen_t socklen;
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42 ngx_str_t *name;
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43
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44 ngx_uint_t tries;
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45 ngx_msec_t start_time;
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46
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47 ngx_event_get_peer_pt get;
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48 ngx_event_free_peer_pt free;
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49 void *data;
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50
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51 #if (NGX_SSL)
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52 ngx_event_set_peer_session_pt set_session;
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53 ngx_event_save_peer_session_pt save_session;
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54 #endif
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55
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56 ngx_addr_t *local;
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57
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58 int rcvbuf;
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59
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60 ngx_log_t *log;
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62 unsigned cached:1;
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64 /* ngx_connection_log_error_e */
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65 unsigned log_error:2;
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66 };
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69 ngx_int_t ngx_event_connect_peer(ngx_peer_connection_t *pc);
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70 ngx_int_t ngx_event_get_peer(ngx_peer_connection_t *pc, void *data);
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73 #endif /* _NGX_EVENT_CONNECT_H_INCLUDED_ */