Mercurial > hg > nginx-quic
view src/event/ngx_event_posted.c @ 7892:2096b21fcd10
gRPC: RST_STREAM(NO_ERROR) handling (ticket #1792).
As per https://tools.ietf.org/html/rfc7540#section-8.1,
: A server can send a complete response prior to the client
: sending an entire request if the response does not depend on
: any portion of the request that has not been sent and
: received. When this is true, a server MAY request that the
: client abort transmission of a request without error by
: sending a RST_STREAM with an error code of NO_ERROR after
: sending a complete response (i.e., a frame with the
: END_STREAM flag). Clients MUST NOT discard responses as a
: result of receiving such a RST_STREAM, though clients can
: always discard responses at their discretion for other
: reasons.
Previously, RST_STREAM(NO_ERROR) received from upstream after
a frame with the END_STREAM flag was incorrectly treated as an
error. Now, a single RST_STREAM(NO_ERROR) is properly handled.
This fixes problems observed with modern grpc-c [1], as well
as with the Go gRPC module.
[1] https://github.com/grpc/grpc/pull/1661
author | Ruslan Ermilov <ru@nginx.com> |
---|---|
date | Thu, 23 Apr 2020 15:10:24 +0300 |
parents | f1720934c45b |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> ngx_queue_t ngx_posted_accept_events; ngx_queue_t ngx_posted_next_events; ngx_queue_t ngx_posted_events; void ngx_event_process_posted(ngx_cycle_t *cycle, ngx_queue_t *posted) { ngx_queue_t *q; ngx_event_t *ev; while (!ngx_queue_empty(posted)) { q = ngx_queue_head(posted); ev = ngx_queue_data(q, ngx_event_t, queue); ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "posted event %p", ev); ngx_delete_posted_event(ev); ev->handler(ev); } } void ngx_event_move_posted_next(ngx_cycle_t *cycle) { ngx_queue_t *q; ngx_event_t *ev; for (q = ngx_queue_head(&ngx_posted_next_events); q != ngx_queue_sentinel(&ngx_posted_next_events); q = ngx_queue_next(q)) { ev = ngx_queue_data(q, ngx_event_t, queue); ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "posted next event %p", ev); ev->ready = 1; ev->available = -1; } ngx_queue_add(&ngx_posted_events, &ngx_posted_next_events); ngx_queue_init(&ngx_posted_next_events); }