Opened 9 months ago
Last modified 9 months ago
#2604 new defect
Errors handling when streaming
| Reported by: | Owned by: | ||
|---|---|---|---|
| Priority: | minor | Milestone: | |
| Component: | documentation | Version: | 1.25.x |
| Keywords: | Cc: | ||
| uname -a: | 5.14.0-162.23.1.el9_1.x86_64 #1 SMP PREEMPT_DYNAMIC Tue Apr 11 19:09:37 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux | ||
| nginx -V: |
nginx version: nginx/1.25.3
built by gcc 11.3.1 20221121 (Red Hat 11.3.1-4) (GCC) built with OpenSSL 3.0.7 1 Nov 2022 TLS SNI support enabled configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib64/nginx/modules --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --user=nginx --group=nginx --with-compat --with-file-aio --with-threads --with-http_addition_module --with-http_auth_request_module --with-http_dav_module --with-http_flv_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_mp4_module --with-http_random_index_module --with-http_realip_module --with-http_secure_link_module --with-http_slice_module --with-http_ssl_module --with-http_stub_status_module --with-http_sub_module --with-http_v2_module --with-http_v3_module --with-mail --with-mail_ssl_module --with-stream --with-stream_realip_module --with-stream_ssl_module --with-stream_ssl_preread_module --with-cc-opt='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -march=x86-64-v2 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -fPIC' --with-ld-opt='-Wl,-z,relro -Wl,-z,now -pie' |
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Description (last modified by )
Hello!
I have an application which streams data using http1.1 and chunked transfer-encoding.
nginx is used as http1.1/http2 proxy. http1.1 is used to communicate with an upstream with proxy_buffering off.
When application aborts streaming the expected behavior is to get an error on client's side.
That works well with http1.1
$ curl --http1.1 -i localhost:8083 HTTP/1.1 200 OK Server: nginx/1.25.3 Date: Wed, 14 Feb 2024 17:25:56 GMT Content-Type: text/plain; charset=utf-8 Transfer-Encoding: chunked Connection: keep-alive Random Line 1: 2y1a0XrIc5 Random Line 2: KwIrtX5B5h [...] Random Line 442: FDo6cv5f4h Random Line 443:curl: (18) transfer closed with outstanding read data remaining
but works randomly with http2. Curl may hang, exit with zero code or with error
$ curl --http2-prior-knowledge -i localhost:8082 HTTP/2 200 server: nginx/1.25.3 date: Wed, 14 Feb 2024 17:28:12 GMT content-type: text/plain; charset=utf-8 Random Line 1: 9L02Z5qokm Random Line 2: gR8emalzhl [...] Random Line 441: CbmbnKY2EC Random Line 442: JsiYbH9Bwp curl: (92) HTTP/2 stream 0 was not closed cleanly: INTERNAL_ERROR (err 2)
Also tested with haproxy 2.9.4 which works stable
~$ curl --http2-prior-knowledge -i localhost:8081 HTTP/2 200 date: Wed, 14 Feb 2024 17:30:54 GMT content-type: text/plain; charset=utf-8 Random Line 1: CclkQfagoE Random Line 2: 9TPlR0U51t [...] Random Line 441: JRMeZwNvoW Random Line 442: 6m0PZcOe8C curl: (92) HTTP/2 stream 0 was not closed cleanly: CANCEL (err 8)
Earlier versions of haproxy have issues too.
Please fix if possible
Change History (2)
comment:1 by , 9 months ago
| Description: | modified (diff) |
|---|
comment:2 by , 9 months ago
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NGINX resets http/2 stream with:
So yes, aborting connection by upstream falls under the third case. The code that does this knows nothing about the upstream (and if it's proxying at all) so it acts accordingly. So far I don't see enough reasons for a different behavior. RFC 9113 does not provide details about the CANCEL (0x08) code other than in response to a pushed stream, which is not the case here.