Mercurial > hg > nginx
annotate src/event/ngx_event_udp.h @ 9143:48691bab4474
QUIC: fixed probe-congestion deadlock.
When probe timeout expired while congestion window was exhausted, probe PINGs
could not be sent. As a result, lost packets could not be declared lost and
congestion window could not be freed for new packets. This deadlock
continued until connection idle timeout expiration.
Now PINGs are sent separately from the frame queue without congestion control,
as specified by RFC 9002, Section 7:
An endpoint MUST NOT send a packet if it would cause bytes_in_flight
(see Appendix B.2) to be larger than the congestion window, unless the
packet is sent on a PTO timer expiration (see Section 6.2) or when entering
recovery (see Section 7.3.2).
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Mon, 14 Aug 2023 08:28:30 +0400 |
parents | adcc6d8acfd4 |
children |
rev | line source |
---|---|
8001
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
1 |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
2 /* |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
3 * Copyright (C) Nginx, Inc. |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
4 */ |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
5 |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
6 |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
7 #ifndef _NGX_EVENT_UDP_H_INCLUDED_ |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
8 #define _NGX_EVENT_UDP_H_INCLUDED_ |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
9 |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
10 |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
11 #include <ngx_config.h> |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
12 #include <ngx_core.h> |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
13 |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
14 |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
15 #if !(NGX_WIN32) |
8002
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
16 |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
17 #if ((NGX_HAVE_MSGHDR_MSG_CONTROL) \ |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
18 && (NGX_HAVE_IP_SENDSRCADDR || NGX_HAVE_IP_RECVDSTADDR \ |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
19 || NGX_HAVE_IP_PKTINFO \ |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
20 || (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO))) |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
21 #define NGX_HAVE_ADDRINFO_CMSG 1 |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
22 |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
23 #endif |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
24 |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
25 |
8809
6f434af59257
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
26 struct ngx_udp_connection_s { |
9017
c2f5d79cde64
QUIC: separate UDP framework for QUIC.
Roman Arutyunyan <arut@nginx.com>
parents:
9008
diff
changeset
|
27 ngx_rbtree_node_t node; |
c2f5d79cde64
QUIC: separate UDP framework for QUIC.
Roman Arutyunyan <arut@nginx.com>
parents:
9008
diff
changeset
|
28 ngx_connection_t *connection; |
c2f5d79cde64
QUIC: separate UDP framework for QUIC.
Roman Arutyunyan <arut@nginx.com>
parents:
9008
diff
changeset
|
29 ngx_buf_t *buffer; |
9107
adcc6d8acfd4
Common tree insert function for QUIC and UDP connections.
Roman Arutyunyan <arut@nginx.com>
parents:
9017
diff
changeset
|
30 ngx_str_t key; |
8809
6f434af59257
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
31 }; |
6f434af59257
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
32 |
6f434af59257
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
33 |
8002
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
34 #if (NGX_HAVE_ADDRINFO_CMSG) |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
35 |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
36 typedef union { |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
37 #if (NGX_HAVE_IP_SENDSRCADDR || NGX_HAVE_IP_RECVDSTADDR) |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
38 struct in_addr addr; |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
39 #endif |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
40 |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
41 #if (NGX_HAVE_IP_PKTINFO) |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
42 struct in_pktinfo pkt; |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
43 #endif |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
44 |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
45 #if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
46 struct in6_pktinfo pkt6; |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
47 #endif |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
48 } ngx_addrinfo_t; |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
49 |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
50 size_t ngx_set_srcaddr_cmsg(struct cmsghdr *cmsg, |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
51 struct sockaddr *local_sockaddr); |
8003
0f6cc8f73744
Core: added function for local source address cmsg.
Vladimir Homutov <vl@nginx.com>
parents:
8002
diff
changeset
|
52 ngx_int_t ngx_get_srcaddr_cmsg(struct cmsghdr *cmsg, |
0f6cc8f73744
Core: added function for local source address cmsg.
Vladimir Homutov <vl@nginx.com>
parents:
8002
diff
changeset
|
53 struct sockaddr *local_sockaddr); |
8002
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
54 |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
55 #endif |
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
56 |
8001
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
57 void ngx_event_recvmsg(ngx_event_t *ev); |
8002
cfe1284e5d1d
Core: made the ngx_sendmsg() function non-static.
Vladimir Homutov <vl@nginx.com>
parents:
8001
diff
changeset
|
58 ssize_t ngx_sendmsg(ngx_connection_t *c, struct msghdr *msg, int flags); |
8001
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
59 void ngx_udp_rbtree_insert_value(ngx_rbtree_node_t *temp, |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
60 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel); |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
61 #endif |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
62 |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
63 void ngx_delete_udp_connection(void *data); |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
64 |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
65 |
8206ecdcd837
Core: the ngx_event_udp.h header file.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
66 #endif /* _NGX_EVENT_UDP_H_INCLUDED_ */ |