Mercurial > hg > nginx
view src/http/v3/ngx_http_v3.c @ 9045:c6580dce98a8 quic
QUIC: fixed triggering stream read event (ticket #2409).
If a client packet carrying a stream data frame is not acked due to packet loss,
the stream data is retransmitted later by client. It's also possible that the
retransmitted range is bigger than before due to more stream data being
available by then. If the original data was read out by the application,
there would be no read event triggered by the retransmitted frame, even though
it contains new data.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Wed, 23 Nov 2022 18:50:26 +0400 |
parents | 81a3429db8b0 |
children | 6546c2ae1c7b |
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/* * Copyright (C) Roman Arutyunyan * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> static void ngx_http_v3_keepalive_handler(ngx_event_t *ev); static void ngx_http_v3_cleanup_session(void *data); ngx_int_t ngx_http_v3_init_session(ngx_connection_t *c) { ngx_connection_t *pc; ngx_pool_cleanup_t *cln; ngx_http_connection_t *hc; ngx_http_v3_session_t *h3c; pc = c->quic->parent; hc = pc->data; if (hc->v3_session) { return NGX_OK; } ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 init session"); h3c = ngx_pcalloc(pc->pool, sizeof(ngx_http_v3_session_t)); if (h3c == NULL) { goto failed; } h3c->max_push_id = (uint64_t) -1; h3c->goaway_push_id = (uint64_t) -1; ngx_queue_init(&h3c->blocked); ngx_queue_init(&h3c->pushing); h3c->keepalive.log = pc->log; h3c->keepalive.data = pc; h3c->keepalive.handler = ngx_http_v3_keepalive_handler; h3c->keepalive.cancelable = 1; h3c->table.send_insert_count.log = pc->log; h3c->table.send_insert_count.data = pc; h3c->table.send_insert_count.handler = ngx_http_v3_inc_insert_count_handler; cln = ngx_pool_cleanup_add(pc->pool, 0); if (cln == NULL) { goto failed; } cln->handler = ngx_http_v3_cleanup_session; cln->data = h3c; hc->v3_session = h3c; return ngx_http_v3_send_settings(c); failed: ngx_log_error(NGX_LOG_ERR, c->log, 0, "failed to create http3 session"); ngx_http_v3_finalize_connection(c, NGX_HTTP_V3_ERR_INTERNAL_ERROR, "failed to create http3 session"); return NGX_ERROR; } static void ngx_http_v3_keepalive_handler(ngx_event_t *ev) { ngx_connection_t *c; c = ev->data; ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 keepalive handler"); ngx_http_v3_finalize_connection(c, NGX_HTTP_V3_ERR_NO_ERROR, "keepalive timeout"); } static void ngx_http_v3_cleanup_session(void *data) { ngx_http_v3_session_t *h3c = data; ngx_http_v3_cleanup_table(h3c); if (h3c->keepalive.timer_set) { ngx_del_timer(&h3c->keepalive); } if (h3c->table.send_insert_count.posted) { ngx_delete_posted_event(&h3c->table.send_insert_count); } } ngx_int_t ngx_http_v3_check_flood(ngx_connection_t *c) { ngx_http_v3_session_t *h3c; h3c = ngx_http_v3_get_session(c); if (h3c->total_bytes / 8 > h3c->payload_bytes + 1048576) { ngx_log_error(NGX_LOG_INFO, c->log, 0, "http3 flood detected"); ngx_http_v3_finalize_connection(c, NGX_HTTP_V3_ERR_NO_ERROR, "HTTP/3 flood detected"); return NGX_ERROR; } return NGX_OK; }