nginx-tomcat setup: readv() failed (104: Connection reset by peer) while reading upstream, client -


i have setup nginx front-facing server , tomcat instances upstream servers in reverse proxy setup.

i keep getting error on various requests: 2017/07/20 11:43:11 [error] 16892#16892: *3154964 readv() failed (104: connection reset peer) while reading upstream, client: , server: myserver, request: "get // http/1.1", upstream: "http:///", host: "myserver", referrer: "https://myserver/"

what error mean , how fix it?

below relevant parts of nginx conf directives:

user www-data; worker_processes auto; pid /run/nginx.pid;  events {         worker_connections 2000;         multi_accept on;         use epoll; } http {     upstream backend  {         server  localhost:8080 max_fails=3 fail_timeout=120s;     }     location /path {         proxy_pass http://backend;         proxy_redirect     off;         proxy_set_header   host $host;         proxy_set_header   x-real-ip $remote_addr;         proxy_set_header   x-forwarded-for $remote_addr;         proxy_set_header   x-forwarded-host $server_name;     }     :     :     sendfile on;     tcp_nopush on;     tcp_nodelay on;     keepalive_timeout 65;     types_hash_max_size 2048;      proxy_connect_timeout       1000;     proxy_send_timeout          1000;     proxy_read_timeout          1000;     send_timeout                1000;    :    : }


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