id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	uname	nginx_version
1295	proxy_pass to websocket server	nknighter@…		"Hello, I have nginx config as a proxy server to local websocket server.
As the guide was used http://nginx.org/ru/docs/http/websocket.html.

Problem in the current configuration are lines in the error.log (hundreds per second) with number of clients  ~5k:

2017/06/10 05:48:37 [error] 1134#0: *28355 recv() failed (104: Connection reset by peer) while proxying upgraded connection, client: 178.62.128.67, server: example.com, request: ""GET / HTTP/1.1"", upstream: ""http://127.0.0.1:8005/"", host: ""example.com""
2017/06/10 05:48:37 [error] 1138#0: *27997 recv() failed (104: Connection reset by peer) while proxying upgraded connection, client: 36.234.135.45, server: example.com, request: ""GET / HTTP/1.1"", upstream: ""http://127.0.0.1:8005/"", host: ""example.com""
2017/06/10 05:48:37 [error] 1134#0: *27922 recv() failed (104: Connection reset by peer) while proxying upgraded connection, client: 5.18.206.115, server: example.com, request: ""GET / HTTP/1.1"", upstream: ""http://127.0.0.1:8005/"", host: ""example.com""

Part of config:
upstream ws_server {
  server 127.0.0.1:8005;
}

server {
  listen 443 ssl;
  // ssl keys
  server_name example.com;
  error_log /var/log/nginx/error.log notice;
  location / {
    proxy_pass http://ws_server;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection ""upgrade"";
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $host;
    proxy_connect_timeout 7d;
    proxy_send_timeout 7d;
    proxy_read_timeout 7d;
  }
}
As a backend websocket server was used ""gorilla-weboscket"" written in golang and an implementation on node.js with ""ws"" library. Errors occur in both situations."	defect	closed	minor		other	1.12.x	invalid			Linux 4.11.4-1.el7.elrepo.x86_64 #1 SMP Wed Jun 7 12:18:44 EDT 2017 x86_64 x86_64 x86_64 GNU/Linux	"nginx version: nginx/1.12.0
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-4) (GCC)
built with OpenSSL 1.0.1e-fips 11 Feb 2013
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-mail --with-mail_ssl_module --with-stream --with-stream_realip_module --with-stream_ssl_module --with-stream_ssl_preread_module --with-cc-opt='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -fPIC' --with-ld-opt='-Wl,-z,relro -Wl,-z,now -pie'"