Mercurial > hg > nginx
annotate src/event/quic/ngx_event_quic_udp.c @ 9138:a90f79792b5d
QUIC: optimized ACK delay.
Previously ACK was not generated if max_ack_delay was not yet expired and the
number of unacknowledged ack-eliciting packets was less than two, as allowed by
RFC 9000 13.2.1-13.2.2. However this only makes sense to avoid sending ACK-only
packets, as explained by the RFC:
On the other hand, reducing the frequency of packets that carry only
acknowledgments reduces packet transmission and processing cost at both
endpoints.
Now ACK is delayed only if output frame queue is empty. Otherwise ACK is sent
immediately, which significantly improves QUIC performance with certain tests.
author | Roman Arutyunyan <arut@nginx.com> |
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date | Thu, 27 Jul 2023 16:37:17 +0400 |
parents | 68fa4b86ed46 |
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rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Roman Arutyunyan |
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4 * Copyright (C) Nginx, Inc. |
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5 */ |
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6 |
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_event.h> |
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11 #include <ngx_event_quic_connection.h> |
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12 |
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13 |
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14 static void ngx_quic_close_accepted_connection(ngx_connection_t *c); |
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15 static ngx_connection_t *ngx_quic_lookup_connection(ngx_listening_t *ls, |
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16 ngx_str_t *key, struct sockaddr *local_sockaddr, socklen_t local_socklen); |
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17 |
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18 |
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19 void |
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20 ngx_quic_recvmsg(ngx_event_t *ev) |
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21 { |
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22 ssize_t n; |
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23 ngx_str_t key; |
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24 ngx_buf_t buf; |
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25 ngx_log_t *log; |
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26 ngx_err_t err; |
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27 socklen_t socklen, local_socklen; |
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28 ngx_event_t *rev, *wev; |
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29 struct iovec iov[1]; |
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30 struct msghdr msg; |
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31 ngx_sockaddr_t sa, lsa; |
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32 struct sockaddr *sockaddr, *local_sockaddr; |
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33 ngx_listening_t *ls; |
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34 ngx_event_conf_t *ecf; |
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35 ngx_connection_t *c, *lc; |
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36 ngx_quic_socket_t *qsock; |
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37 static u_char buffer[NGX_QUIC_MAX_UDP_PAYLOAD_SIZE]; |
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38 |
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39 #if (NGX_HAVE_ADDRINFO_CMSG) |
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40 u_char msg_control[CMSG_SPACE(sizeof(ngx_addrinfo_t))]; |
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41 #endif |
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42 |
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43 if (ev->timedout) { |
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44 if (ngx_enable_accept_events((ngx_cycle_t *) ngx_cycle) != NGX_OK) { |
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45 return; |
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46 } |
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47 |
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48 ev->timedout = 0; |
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49 } |
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50 |
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51 ecf = ngx_event_get_conf(ngx_cycle->conf_ctx, ngx_event_core_module); |
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52 |
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53 if (!(ngx_event_flags & NGX_USE_KQUEUE_EVENT)) { |
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54 ev->available = ecf->multi_accept; |
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55 } |
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56 |
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57 lc = ev->data; |
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58 ls = lc->listening; |
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59 ev->ready = 0; |
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60 |
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61 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, |
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62 "quic recvmsg on %V, ready: %d", |
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63 &ls->addr_text, ev->available); |
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64 |
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65 do { |
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66 ngx_memzero(&msg, sizeof(struct msghdr)); |
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67 |
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68 iov[0].iov_base = (void *) buffer; |
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69 iov[0].iov_len = sizeof(buffer); |
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70 |
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71 msg.msg_name = &sa; |
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72 msg.msg_namelen = sizeof(ngx_sockaddr_t); |
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73 msg.msg_iov = iov; |
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74 msg.msg_iovlen = 1; |
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75 |
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76 #if (NGX_HAVE_ADDRINFO_CMSG) |
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77 if (ls->wildcard) { |
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78 msg.msg_control = &msg_control; |
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79 msg.msg_controllen = sizeof(msg_control); |
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80 |
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81 ngx_memzero(&msg_control, sizeof(msg_control)); |
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83 #endif |
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84 |
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85 n = recvmsg(lc->fd, &msg, 0); |
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86 |
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87 if (n == -1) { |
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88 err = ngx_socket_errno; |
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89 |
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90 if (err == NGX_EAGAIN) { |
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91 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, err, |
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92 "quic recvmsg() not ready"); |
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93 return; |
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94 } |
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95 |
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96 ngx_log_error(NGX_LOG_ALERT, ev->log, err, "quic recvmsg() failed"); |
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97 |
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98 return; |
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99 } |
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100 |
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101 #if (NGX_HAVE_ADDRINFO_CMSG) |
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102 if (msg.msg_flags & (MSG_TRUNC|MSG_CTRUNC)) { |
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103 ngx_log_error(NGX_LOG_ALERT, ev->log, 0, |
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|
104 "quic recvmsg() truncated data"); |
7285
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parents:
diff
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|
105 continue; |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
106 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
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|
107 #endif |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
108 |
9017
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QUIC: separate UDP framework for QUIC.
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diff
changeset
|
109 sockaddr = msg.msg_name; |
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QUIC: separate UDP framework for QUIC.
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9008
diff
changeset
|
110 socklen = msg.msg_namelen; |
7285
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
111 |
9017
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QUIC: separate UDP framework for QUIC.
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9008
diff
changeset
|
112 if (socklen > (socklen_t) sizeof(ngx_sockaddr_t)) { |
c2f5d79cde64
QUIC: separate UDP framework for QUIC.
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9008
diff
changeset
|
113 socklen = sizeof(ngx_sockaddr_t); |
7285
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
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|
114 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
115 |
9017
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QUIC: separate UDP framework for QUIC.
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diff
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|
116 #if (NGX_HAVE_UNIX_DOMAIN) |
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diff
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|
117 |
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diff
changeset
|
118 if (sockaddr->sa_family == AF_UNIX) { |
c2f5d79cde64
QUIC: separate UDP framework for QUIC.
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diff
changeset
|
119 struct sockaddr_un *saun = (struct sockaddr_un *) sockaddr; |
7285
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
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changeset
|
120 |
9017
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|
121 if (socklen <= (socklen_t) offsetof(struct sockaddr_un, sun_path) |
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QUIC: separate UDP framework for QUIC.
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122 || saun->sun_path[0] == '\0') |
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QUIC: separate UDP framework for QUIC.
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diff
changeset
|
123 { |
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|
124 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ngx_cycle->log, 0, |
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QUIC: separate UDP framework for QUIC.
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|
125 "unbound unix socket"); |
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QUIC: separate UDP framework for QUIC.
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|
126 goto next; |
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QUIC: separate UDP framework for QUIC.
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9008
diff
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|
127 } |
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QUIC: separate UDP framework for QUIC.
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changeset
|
128 } |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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129 |
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|
130 #endif |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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131 |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
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|
132 local_sockaddr = ls->sockaddr; |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
133 local_socklen = ls->socklen; |
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Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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changeset
|
134 |
8003
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Core: added function for local source address cmsg.
Vladimir Homutov <vl@nginx.com>
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7820
diff
changeset
|
135 #if (NGX_HAVE_ADDRINFO_CMSG) |
7285
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
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changeset
|
136 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
changeset
|
137 if (ls->wildcard) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
138 struct cmsghdr *cmsg; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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changeset
|
139 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
140 ngx_memcpy(&lsa, local_sockaddr, local_socklen); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
141 local_sockaddr = &lsa.sockaddr; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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|
142 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
changeset
|
143 for (cmsg = CMSG_FIRSTHDR(&msg); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
changeset
|
144 cmsg != NULL; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
145 cmsg = CMSG_NXTHDR(&msg, cmsg)) |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
146 { |
8003
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Core: added function for local source address cmsg.
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7820
diff
changeset
|
147 if (ngx_get_srcaddr_cmsg(cmsg, local_sockaddr) == NGX_OK) { |
7285
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
changeset
|
148 break; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
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|
149 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
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|
150 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
changeset
|
151 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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diff
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|
152 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
153 #endif |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
154 |
9017
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9008
diff
changeset
|
155 if (ngx_quic_get_packet_dcid(ev->log, buffer, n, &key) != NGX_OK) { |
c2f5d79cde64
QUIC: separate UDP framework for QUIC.
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parents:
9008
diff
changeset
|
156 goto next; |
8732
db58c7ef1d7c
QUIC: do not handle empty dcid.
Roman Arutyunyan <arut@nginx.com>
parents:
8731
diff
changeset
|
157 } |
db58c7ef1d7c
QUIC: do not handle empty dcid.
Roman Arutyunyan <arut@nginx.com>
parents:
8731
diff
changeset
|
158 |
9017
c2f5d79cde64
QUIC: separate UDP framework for QUIC.
Roman Arutyunyan <arut@nginx.com>
parents:
9008
diff
changeset
|
159 c = ngx_quic_lookup_connection(ls, &key, local_sockaddr, local_socklen); |
7286 | 160 |
161 if (c) { | |
162 | |
163 #if (NGX_DEBUG) | |
164 if (c->log->log_level & NGX_LOG_DEBUG_EVENT) { | |
165 ngx_log_handler_pt handler; | |
166 | |
167 handler = c->log->handler; | |
168 c->log->handler = NULL; | |
169 | |
170 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
9017
c2f5d79cde64
QUIC: separate UDP framework for QUIC.
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9008
diff
changeset
|
171 "quic recvmsg: fd:%d n:%z", c->fd, n); |
7286 | 172 |
173 c->log->handler = handler; | |
174 } | |
175 #endif | |
176 | |
177 ngx_memzero(&buf, sizeof(ngx_buf_t)); | |
178 | |
179 buf.pos = buffer; | |
180 buf.last = buffer + n; | |
8733
385d511b5064
QUIC: fixed udp buffer initialization.
Vladimir Homutov <vl@nginx.com>
parents:
8732
diff
changeset
|
181 buf.start = buf.pos; |
385d511b5064
QUIC: fixed udp buffer initialization.
Vladimir Homutov <vl@nginx.com>
parents:
8732
diff
changeset
|
182 buf.end = buffer + sizeof(buffer); |
7286 | 183 |
9017
c2f5d79cde64
QUIC: separate UDP framework for QUIC.
Roman Arutyunyan <arut@nginx.com>
parents:
9008
diff
changeset
|
184 qsock = ngx_quic_get_socket(c); |
7286 | 185 |
9111
68fa4b86ed46
QUIC: better sockaddr initialization.
Maxim Dounin <mdounin@mdounin.ru>
parents:
9107
diff
changeset
|
186 ngx_memcpy(&qsock->sockaddr, sockaddr, socklen); |
9017
c2f5d79cde64
QUIC: separate UDP framework for QUIC.
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9008
diff
changeset
|
187 qsock->socklen = socklen; |
8734
c61fcdc1b8e3
UDP: extended datagram context.
Vladimir Homutov <vl@nginx.com>
parents:
8733
diff
changeset
|
188 |
9017
c2f5d79cde64
QUIC: separate UDP framework for QUIC.
Roman Arutyunyan <arut@nginx.com>
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9008
diff
changeset
|
189 c->udp->buffer = &buf; |
7440
6d4bc025c5a7
Prevented scheduling events on a shared connection.
Roman Arutyunyan <arut@nginx.com>
parents:
7393
diff
changeset
|
190 |
9017
c2f5d79cde64
QUIC: separate UDP framework for QUIC.
Roman Arutyunyan <arut@nginx.com>
parents:
9008
diff
changeset
|
191 rev = c->read; |
7286 | 192 rev->ready = 1; |
7440
6d4bc025c5a7
Prevented scheduling events on a shared connection.
Roman Arutyunyan <arut@nginx.com>
parents:
7393
diff
changeset
|
193 rev->active = 0; |
7286 | 194 |
195 rev->handler(rev); | |
196 | |
7391
27559d4a5151
Stream: fixed possible use of a freed connection.
Vladimir Homutov <vl@nginx.com>
parents:
7286
diff
changeset
|
197 if (c->udp) { |
9017
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QUIC: separate UDP framework for QUIC.
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9008
diff
changeset
|
198 c->udp->buffer = NULL; |
7391
27559d4a5151
Stream: fixed possible use of a freed connection.
Vladimir Homutov <vl@nginx.com>
parents:
7286
diff
changeset
|
199 } |
27559d4a5151
Stream: fixed possible use of a freed connection.
Vladimir Homutov <vl@nginx.com>
parents:
7286
diff
changeset
|
200 |
7286 | 201 rev->ready = 0; |
7440
6d4bc025c5a7
Prevented scheduling events on a shared connection.
Roman Arutyunyan <arut@nginx.com>
parents:
7393
diff
changeset
|
202 rev->active = 1; |
7286 | 203 |
204 goto next; | |
205 } | |
206 | |
7285
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
207 #if (NGX_STAT_STUB) |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
208 (void) ngx_atomic_fetch_add(ngx_stat_accepted, 1); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
209 #endif |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
210 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
211 ngx_accept_disabled = ngx_cycle->connection_n / 8 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
212 - ngx_cycle->free_connection_n; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
213 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
214 c = ngx_get_connection(lc->fd, ev->log); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
215 if (c == NULL) { |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
216 return; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
217 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
218 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
219 c->shared = 1; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
220 c->type = SOCK_DGRAM; |
9017
c2f5d79cde64
QUIC: separate UDP framework for QUIC.
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parents:
9008
diff
changeset
|
221 c->socklen = socklen; |
7285
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
222 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
223 #if (NGX_STAT_STUB) |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
224 (void) ngx_atomic_fetch_add(ngx_stat_active, 1); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
225 #endif |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
226 |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
227 c->pool = ngx_create_pool(ls->pool_size, ev->log); |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
228 if (c->pool == NULL) { |
9017
c2f5d79cde64
QUIC: separate UDP framework for QUIC.
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9008
diff
changeset
|
229 ngx_quic_close_accepted_connection(c); |
7285
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
230 return; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
231 } |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
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parents:
diff
changeset
|
232 |
9017
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QUIC: separate UDP framework for QUIC.
Roman Arutyunyan <arut@nginx.com>
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9008
diff
changeset
|
233 c->sockaddr = ngx_palloc(c->pool, NGX_SOCKADDRLEN); |
7285
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
234 if (c->sockaddr == NULL) { |
9017
c2f5d79cde64
QUIC: separate UDP framework for QUIC.
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9008
diff
changeset
|
235 ngx_quic_close_accepted_connection(c); |
7285
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
236 return; |
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
237 } |
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238 |
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239 ngx_memcpy(c->sockaddr, sockaddr, socklen); |
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240 |
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241 log = ngx_palloc(c->pool, sizeof(ngx_log_t)); |
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242 if (log == NULL) { |
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243 ngx_quic_close_accepted_connection(c); |
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244 return; |
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245 } |
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246 |
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247 *log = ls->log; |
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248 |
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249 c->log = log; |
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250 c->pool->log = log; |
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251 c->listening = ls; |
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252 |
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253 if (local_sockaddr == &lsa.sockaddr) { |
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254 local_sockaddr = ngx_palloc(c->pool, local_socklen); |
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255 if (local_sockaddr == NULL) { |
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256 ngx_quic_close_accepted_connection(c); |
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257 return; |
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258 } |
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259 |
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260 ngx_memcpy(local_sockaddr, &lsa, local_socklen); |
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261 } |
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262 |
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263 c->local_sockaddr = local_sockaddr; |
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264 c->local_socklen = local_socklen; |
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265 |
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266 c->buffer = ngx_create_temp_buf(c->pool, n); |
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267 if (c->buffer == NULL) { |
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268 ngx_quic_close_accepted_connection(c); |
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269 return; |
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270 } |
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271 |
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272 c->buffer->last = ngx_cpymem(c->buffer->last, buffer, n); |
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273 |
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274 rev = c->read; |
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275 wev = c->write; |
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276 |
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277 rev->active = 1; |
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278 wev->ready = 1; |
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279 |
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280 rev->log = log; |
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281 wev->log = log; |
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282 |
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283 /* |
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284 * TODO: MT: - ngx_atomic_fetch_add() |
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285 * or protection by critical section or light mutex |
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286 * |
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287 * TODO: MP: - allocated in a shared memory |
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288 * - ngx_atomic_fetch_add() |
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289 * or protection by critical section or light mutex |
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290 */ |
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291 |
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292 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1); |
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293 |
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294 c->start_time = ngx_current_msec; |
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295 |
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296 #if (NGX_STAT_STUB) |
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297 (void) ngx_atomic_fetch_add(ngx_stat_handled, 1); |
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298 #endif |
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299 |
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300 if (ls->addr_ntop) { |
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301 c->addr_text.data = ngx_pnalloc(c->pool, ls->addr_text_max_len); |
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302 if (c->addr_text.data == NULL) { |
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303 ngx_quic_close_accepted_connection(c); |
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304 return; |
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305 } |
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306 |
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307 c->addr_text.len = ngx_sock_ntop(c->sockaddr, c->socklen, |
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308 c->addr_text.data, |
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309 ls->addr_text_max_len, 0); |
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310 if (c->addr_text.len == 0) { |
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311 ngx_quic_close_accepted_connection(c); |
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312 return; |
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313 } |
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314 } |
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315 |
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316 #if (NGX_DEBUG) |
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317 { |
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318 ngx_str_t addr; |
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319 u_char text[NGX_SOCKADDR_STRLEN]; |
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320 |
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321 ngx_debug_accepted_connection(ecf, c); |
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322 |
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323 if (log->log_level & NGX_LOG_DEBUG_EVENT) { |
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324 addr.data = text; |
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325 addr.len = ngx_sock_ntop(c->sockaddr, c->socklen, text, |
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326 NGX_SOCKADDR_STRLEN, 1); |
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327 |
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328 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, log, 0, |
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329 "*%uA quic recvmsg: %V fd:%d n:%z", |
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330 c->number, &addr, c->fd, n); |
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331 } |
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332 |
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333 } |
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334 #endif |
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335 |
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336 log->data = NULL; |
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337 log->handler = NULL; |
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338 |
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339 ls->handler(c); |
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340 |
7286 | 341 next: |
342 | |
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343 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
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344 ev->available -= n; |
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345 } |
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346 |
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347 } while (ev->available); |
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348 } |
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349 |
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350 |
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351 static void |
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352 ngx_quic_close_accepted_connection(ngx_connection_t *c) |
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353 { |
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354 ngx_free_connection(c); |
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355 |
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356 c->fd = (ngx_socket_t) -1; |
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357 |
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358 if (c->pool) { |
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359 ngx_destroy_pool(c->pool); |
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360 } |
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361 |
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362 #if (NGX_STAT_STUB) |
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363 (void) ngx_atomic_fetch_add(ngx_stat_active, -1); |
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364 #endif |
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365 } |
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366 |
7286 | 367 |
368 static ngx_connection_t * | |
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369 ngx_quic_lookup_connection(ngx_listening_t *ls, ngx_str_t *key, |
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370 struct sockaddr *local_sockaddr, socklen_t local_socklen) |
7286 | 371 { |
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372 uint32_t hash; |
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373 ngx_int_t rc; |
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374 ngx_connection_t *c; |
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375 ngx_rbtree_node_t *node, *sentinel; |
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376 ngx_quic_socket_t *qsock; |
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378 if (key->len == 0) { |
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379 return NULL; |
7286 | 380 } |
381 | |
382 node = ls->rbtree.root; | |
383 sentinel = ls->rbtree.sentinel; | |
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384 hash = ngx_crc32_long(key->data, key->len); |
7286 | 385 |
386 while (node != sentinel) { | |
387 | |
388 if (hash < node->key) { | |
389 node = node->left; | |
390 continue; | |
391 } | |
392 | |
393 if (hash > node->key) { | |
394 node = node->right; | |
395 continue; | |
396 } | |
397 | |
398 /* hash == node->key */ | |
399 | |
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400 qsock = (ngx_quic_socket_t *) node; |
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402 rc = ngx_memn2cmp(key->data, qsock->sid.id, key->len, qsock->sid.len); |
7286 | 403 |
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404 c = qsock->udp.connection; |
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406 if (rc == 0 && ls->wildcard) { | |
407 rc = ngx_cmp_sockaddr(local_sockaddr, local_socklen, | |
408 c->local_sockaddr, c->local_socklen, 1); | |
409 } | |
410 | |
411 if (rc == 0) { | |
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412 c->udp = &qsock->udp; |
7286 | 413 return c; |
414 } | |
415 | |
416 node = (rc < 0) ? node->left : node->right; | |
417 } | |
418 | |
419 return NULL; | |
420 } |