Opened 5 years ago
Closed 5 years ago
#1749 closed defect (duplicate)
HTTP/2 broken connection on requests with URI > 5k
| Reported by: | Owned by: | ||
|---|---|---|---|
| Priority: | minor | Milestone: | |
| Component: | other | Version: | 1.15.x |
| Keywords: | http2 | Cc: | alex+nginx@… |
| uname -a: | Linux srv-a-de.c-52.maxcluster.net 3.16.0 #1 SMP Thu Aug 23 19:33:51 MSK 2018 x86_64 GNU/Linux | ||
| nginx -V: |
nginx version: nginx/1.15.9
built by gcc 6.3.0 20170516 (Debian 6.3.0-18+deb9u1) built with OpenSSL 1.1.0j 20 Nov 2018 TLS SNI support enabled configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib/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-mail --with-mail_ssl_module --with-stream --with-stream_realip_module --with-stream_ssl_module --with-stream_ssl_preread_module --with-cc-opt='-g -O2 -fdebug-prefix-map=/data/builder/debuild/nginx-1.15.9/debian/debuild-base/nginx-1.15.9=. -specs=/usr/share/dpkg/no-pie-compile.specs -fstack-protector-strong -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fPIC' --with-ld-opt='-specs=/usr/share/dpkg/no-pie-link.specs -Wl,-z,relro -Wl,-z,now -Wl,--as-needed -pie' |
||
Description
HTTP/2 Requests with URIs longer than 5k characters (actually something between 4k and 5k) will not return status code 414 "Request-URI Too Large", but rather simply die.
To reproduce the problem (using curl) you can use the following command:
curl https://hsts.c-52.maxcluster.net:8443/$(for i in `seq 8690`; do echo -n "x"; done;) --http2 --silent -o/dev/null -vvv
Which will result in the following protocol:
* Trying 62.113.228.126...
* TCP_NODELAY set
* Connected to hsts.c-52.maxcluster.net (62.113.228.126) port 8443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* successfully set certificate verify locations:
* CAfile: /etc/ssl/certs/ca-certificates.crt
CApath: /etc/ssl/certs
} [5 bytes data]
* TLSv1.2 (OUT), TLS handshake, Client hello (1):
} [222 bytes data]
* TLSv1.2 (IN), TLS handshake, Server hello (2):
{ [102 bytes data]
* TLSv1.2 (IN), TLS handshake, Certificate (11):
{ [2575 bytes data]
* TLSv1.2 (IN), TLS handshake, Server key exchange (12):
{ [300 bytes data]
* TLSv1.2 (IN), TLS handshake, Server finished (14):
{ [4 bytes data]
* TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
} [37 bytes data]
* TLSv1.2 (OUT), TLS change cipher, Client hello (1):
} [1 bytes data]
* TLSv1.2 (OUT), TLS handshake, Finished (20):
} [16 bytes data]
* TLSv1.2 (IN), TLS handshake, Finished (20):
{ [16 bytes data]
* SSL connection using TLSv1.2 / ECDHE-RSA-AES128-GCM-SHA256
* ALPN, server accepted to use h2
* Server certificate:
* subject: CN=hsts.c-52.maxcluster.net
* start date: Mar 7 12:06:02 2019 GMT
* expire date: Jun 5 12:06:02 2019 GMT
* subjectAltName: host "hsts.c-52.maxcluster.net" matched cert's "hsts.c-52.maxcluster.net"
* issuer: C=US; O=Let's Encrypt; CN=Let's Encrypt Authority X3
* SSL certificate verify ok.
* Using HTTP2, server supports multi-use
* Connection state changed (HTTP/2 confirmed)
* Copying HTTP/2 data in stream buffer to connection buffer after upgrade: len=0
} [5 bytes data]
* Using Stream ID: 1 (easy handle 0x5586e24d7900)
} [5 bytes data]
> GET 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HTTP/2
> Host: hsts.c-52.maxcluster.net:8443
> User-Agent: curl/7.58.0
> Accept: */*
>
{ [5 bytes data]
* Connection state changed (MAX_CONCURRENT_STREAMS updated)!
} [5 bytes data]
* TLSv1.2 (IN), TLS alert, Client hello (1):
{ [2 bytes data]
* Unexpected EOF
* Connection #0 to host hsts.c-52.maxcluster.net left intact
This is not a curl bug, Firefox and Chrome exhibit the same behaviour.
Especially the second TLSv1.2 "Client hello" after negotiating MAX_CONCURRENT_STREAMS baffles me.
Using HTTP/1.1 yields the expected 414 (or 200, when adding the needed client_header_buffer_size and large_client_header_buffers options). Using those options does not change the behaviour for HTTP/2.
I've attached a (somewhat) minimal viable configuration to reproduce the problems.
Please let me know if you have any questions!
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Minimum viable configuration to reproduce