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view src/os/unix/ngx_udp_send.c @ 9027:f9d7930d0eed quic
HTTP/3: skip empty request body buffers (ticket #2374).
When client DATA frame header and its content come in different QUIC packets,
it may happen that only the header is processed by the first
ngx_http_v3_request_body_filter() call. In this case an empty request body
buffer is added to r->request_body->bufs, which is later reused in a
subsequent ngx_http_v3_request_body_filter() call without being removed from
the body chain. As a result, rb->request_body->bufs ends up with two copies of
the same buffer.
The fix is to avoid adding empty request body buffers to r->request_body->bufs.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Wed, 03 Aug 2022 16:59:51 +0400 |
parents | 8f038068f4bc |
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> ssize_t ngx_udp_unix_send(ngx_connection_t *c, u_char *buf, size_t size) { ssize_t n; ngx_err_t err; ngx_event_t *wev; wev = c->write; for ( ;; ) { n = sendto(c->fd, buf, size, 0, c->sockaddr, c->socklen); ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0, "sendto: fd:%d %z of %uz to \"%V\"", c->fd, n, size, &c->addr_text); if (n >= 0) { if ((size_t) n != size) { wev->error = 1; (void) ngx_connection_error(c, 0, "sendto() incomplete"); return NGX_ERROR; } c->sent += n; return n; } err = ngx_socket_errno; if (err == NGX_EAGAIN) { wev->ready = 0; ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, NGX_EAGAIN, "sendto() not ready"); return NGX_AGAIN; } if (err != NGX_EINTR) { wev->error = 1; (void) ngx_connection_error(c, err, "sendto() failed"); return NGX_ERROR; } } }