Stream: upstream and downstream limit rates.
Roman Arutyunyan
7 years ago
17 | 17 | ngx_msec_t timeout; |
18 | 18 | ngx_msec_t next_upstream_timeout; |
19 | 19 | size_t downstream_buf_size; |
20 | size_t downstream_limit_rate; | |
20 | 21 | size_t upstream_buf_size; |
22 | size_t upstream_limit_rate; | |
21 | 23 | ngx_uint_t next_upstream_tries; |
22 | 24 | ngx_flag_t next_upstream; |
23 | 25 | ngx_flag_t proxy_protocol; |
131 | 133 | offsetof(ngx_stream_proxy_srv_conf_t, downstream_buf_size), |
132 | 134 | NULL }, |
133 | 135 | |
136 | { ngx_string("proxy_downstream_limit_rate"), | |
137 | NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, | |
138 | ngx_conf_set_size_slot, | |
139 | NGX_STREAM_SRV_CONF_OFFSET, | |
140 | offsetof(ngx_stream_proxy_srv_conf_t, downstream_limit_rate), | |
141 | NULL }, | |
142 | ||
134 | 143 | { ngx_string("proxy_upstream_buffer"), |
135 | 144 | NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, |
136 | 145 | ngx_conf_set_size_slot, |
137 | 146 | NGX_STREAM_SRV_CONF_OFFSET, |
138 | 147 | offsetof(ngx_stream_proxy_srv_conf_t, upstream_buf_size), |
148 | NULL }, | |
149 | ||
150 | { ngx_string("proxy_upstream_limit_rate"), | |
151 | NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, | |
152 | ngx_conf_set_size_slot, | |
153 | NGX_STREAM_SRV_CONF_OFFSET, | |
154 | offsetof(ngx_stream_proxy_srv_conf_t, upstream_limit_rate), | |
139 | 155 | NULL }, |
140 | 156 | |
141 | 157 | { ngx_string("proxy_next_upstream"), |
339 | 355 | } |
340 | 356 | |
341 | 357 | u->proxy_protocol = pscf->proxy_protocol; |
358 | u->start_sec = ngx_time(); | |
342 | 359 | |
343 | 360 | p = ngx_pnalloc(c->pool, pscf->downstream_buf_size); |
344 | 361 | if (p == NULL) { |
830 | 847 | static void |
831 | 848 | ngx_stream_proxy_process_connection(ngx_event_t *ev, ngx_uint_t from_upstream) |
832 | 849 | { |
833 | ngx_connection_t *c; | |
834 | ngx_stream_session_t *s; | |
835 | ngx_stream_upstream_t *u; | |
850 | ngx_connection_t *c, *pc; | |
851 | ngx_stream_session_t *s; | |
852 | ngx_stream_upstream_t *u; | |
853 | ngx_stream_proxy_srv_conf_t *pscf; | |
836 | 854 | |
837 | 855 | c = ev->data; |
838 | 856 | s = c->data; |
839 | 857 | u = s->upstream; |
840 | 858 | |
841 | 859 | if (ev->timedout) { |
842 | ngx_connection_error(c, NGX_ETIMEDOUT, "connection timed out"); | |
843 | ngx_stream_proxy_finalize(s, NGX_DECLINED); | |
860 | ||
861 | if (ev->delayed) { | |
862 | ||
863 | ev->timedout = 0; | |
864 | ev->delayed = 0; | |
865 | ||
866 | if (!ev->ready) { | |
867 | if (ngx_handle_read_event(ev, 0) != NGX_OK) { | |
868 | ngx_stream_proxy_finalize(s, NGX_ERROR); | |
869 | return; | |
870 | } | |
871 | ||
872 | if (u->upstream_buf.start) { | |
873 | pc = u->peer.connection; | |
874 | ||
875 | if (!c->read->delayed && !pc->read->delayed) { | |
876 | pscf = ngx_stream_get_module_srv_conf(s, | |
877 | ngx_stream_proxy_module); | |
878 | ngx_add_timer(c->write, pscf->timeout); | |
879 | } | |
880 | } | |
881 | ||
882 | return; | |
883 | } | |
884 | ||
885 | } else { | |
886 | ngx_connection_error(c, NGX_ETIMEDOUT, "connection timed out"); | |
887 | ngx_stream_proxy_finalize(s, NGX_DECLINED); | |
888 | return; | |
889 | } | |
890 | ||
891 | } else if (ev->delayed) { | |
892 | ||
893 | ngx_log_debug0(NGX_LOG_DEBUG_STREAM, c->log, 0, | |
894 | "stream connection delayed"); | |
895 | ||
896 | if (ngx_handle_read_event(ev, 0) != NGX_OK) { | |
897 | ngx_stream_proxy_finalize(s, NGX_ERROR); | |
898 | } | |
899 | ||
844 | 900 | return; |
845 | 901 | } |
846 | 902 | |
929 | 985 | ngx_stream_proxy_process(ngx_stream_session_t *s, ngx_uint_t from_upstream, |
930 | 986 | ngx_uint_t do_write) |
931 | 987 | { |
932 | size_t size; | |
988 | off_t *received, limit; | |
989 | size_t size, limit_rate; | |
933 | 990 | ssize_t n; |
934 | 991 | ngx_buf_t *b; |
935 | 992 | ngx_uint_t flags; |
993 | ngx_msec_t delay; | |
936 | 994 | ngx_connection_t *c, *pc, *src, *dst; |
937 | 995 | ngx_log_handler_pt handler; |
938 | 996 | ngx_stream_upstream_t *u; |
943 | 1001 | c = s->connection; |
944 | 1002 | pc = u->upstream_buf.start ? u->peer.connection : NULL; |
945 | 1003 | |
1004 | pscf = ngx_stream_get_module_srv_conf(s, ngx_stream_proxy_module); | |
1005 | ||
946 | 1006 | if (from_upstream) { |
947 | 1007 | src = pc; |
948 | 1008 | dst = c; |
949 | 1009 | b = &u->upstream_buf; |
1010 | limit_rate = pscf->upstream_limit_rate; | |
1011 | received = &u->received; | |
950 | 1012 | |
951 | 1013 | } else { |
952 | 1014 | src = c; |
953 | 1015 | dst = pc; |
954 | 1016 | b = &u->downstream_buf; |
1017 | limit_rate = pscf->downstream_limit_rate; | |
1018 | received = &s->received; | |
955 | 1019 | } |
956 | 1020 | |
957 | 1021 | for ( ;; ) { |
982 | 1046 | |
983 | 1047 | size = b->end - b->last; |
984 | 1048 | |
985 | if (size && src->read->ready) { | |
1049 | if (size && src->read->ready && !src->read->delayed) { | |
1050 | ||
1051 | if (limit_rate) { | |
1052 | limit = (off_t) limit_rate * (ngx_time() - u->start_sec + 1) | |
1053 | - *received; | |
1054 | ||
1055 | if (limit <= 0) { | |
1056 | src->read->delayed = 1; | |
1057 | delay = (ngx_msec_t) (- limit * 1000 / limit_rate + 1); | |
1058 | ngx_add_timer(src->read, delay); | |
1059 | break; | |
1060 | } | |
1061 | ||
1062 | if (size > (size_t) limit) { | |
1063 | size = limit; | |
1064 | } | |
1065 | } | |
986 | 1066 | |
987 | 1067 | n = src->recv(src, b->last, size); |
988 | 1068 | |
991 | 1071 | } |
992 | 1072 | |
993 | 1073 | if (n > 0) { |
994 | if (from_upstream) { | |
995 | u->received += n; | |
996 | ||
997 | } else { | |
998 | s->received += n; | |
1074 | if (limit_rate) { | |
1075 | delay = (ngx_msec_t) (n * 1000 / limit_rate); | |
1076 | ||
1077 | if (delay > 0) { | |
1078 | src->read->delayed = 1; | |
1079 | ngx_add_timer(src->read, delay); | |
1080 | } | |
999 | 1081 | } |
1000 | 1082 | |
1083 | *received += n; | |
1084 | b->last += n; | |
1001 | 1085 | do_write = 1; |
1002 | b->last += n; | |
1086 | ||
1003 | 1087 | continue; |
1004 | 1088 | } |
1005 | 1089 | |
1010 | 1094 | |
1011 | 1095 | break; |
1012 | 1096 | } |
1013 | ||
1014 | pscf = ngx_stream_get_module_srv_conf(s, ngx_stream_proxy_module); | |
1015 | 1097 | |
1016 | 1098 | if (src->read->eof && (b->pos == b->last || (dst && dst->read->eof))) { |
1017 | 1099 | handler = c->log->handler; |
1043 | 1125 | return NGX_ERROR; |
1044 | 1126 | } |
1045 | 1127 | |
1046 | ngx_add_timer(c->read, pscf->timeout); | |
1128 | if (!c->read->delayed && !pc->read->delayed) { | |
1129 | ngx_add_timer(c->write, pscf->timeout); | |
1130 | ||
1131 | } else if (c->write->timer_set) { | |
1132 | ngx_del_timer(c->write); | |
1133 | } | |
1047 | 1134 | } |
1048 | 1135 | |
1049 | 1136 | return NGX_OK; |
1206 | 1293 | conf->timeout = NGX_CONF_UNSET_MSEC; |
1207 | 1294 | conf->next_upstream_timeout = NGX_CONF_UNSET_MSEC; |
1208 | 1295 | conf->downstream_buf_size = NGX_CONF_UNSET_SIZE; |
1296 | conf->downstream_limit_rate = NGX_CONF_UNSET_SIZE; | |
1209 | 1297 | conf->upstream_buf_size = NGX_CONF_UNSET_SIZE; |
1298 | conf->upstream_limit_rate = NGX_CONF_UNSET_SIZE; | |
1210 | 1299 | conf->next_upstream_tries = NGX_CONF_UNSET_UINT; |
1211 | 1300 | conf->next_upstream = NGX_CONF_UNSET; |
1212 | 1301 | conf->proxy_protocol = NGX_CONF_UNSET; |
1243 | 1332 | ngx_conf_merge_size_value(conf->downstream_buf_size, |
1244 | 1333 | prev->downstream_buf_size, 16384); |
1245 | 1334 | |
1335 | ngx_conf_merge_size_value(conf->downstream_limit_rate, | |
1336 | prev->downstream_limit_rate, 0); | |
1337 | ||
1246 | 1338 | ngx_conf_merge_size_value(conf->upstream_buf_size, |
1247 | 1339 | prev->upstream_buf_size, 16384); |
1340 | ||
1341 | ngx_conf_merge_size_value(conf->upstream_limit_rate, | |
1342 | prev->upstream_limit_rate, 0); | |
1248 | 1343 | |
1249 | 1344 | ngx_conf_merge_uint_value(conf->next_upstream_tries, |
1250 | 1345 | prev->next_upstream_tries, 0); |