Listen 80

ServerName localhost

LoadModule mpm_event_module             modules/mod_mpm_event.so

LoadModule authn_file_module            modules/mod_authn_file.so
LoadModule authn_core_module            modules/mod_authn_core.so
LoadModule authz_host_module            modules/mod_authz_host.so
LoadModule authz_groupfile_module       modules/mod_authz_groupfile.so
LoadModule authz_user_module            modules/mod_authz_user.so
LoadModule authz_core_module            modules/mod_authz_core.so

LoadModule headers_module               modules/mod_headers.so
LoadModule lbmethod_byrequests_module   modules/mod_lbmethod_byrequests.so
LoadModule proxy_module                 modules/mod_proxy.so
LoadModule proxy_balancer_module        modules/mod_proxy_balancer.so
LoadModule proxy_http_module            modules/mod_proxy_http.so
LoadModule proxy_wstunnel_module        modules/mod_proxy_wstunnel.so
LoadModule rewrite_module               modules/mod_rewrite.so
LoadModule slotmem_shm_module           modules/mod_slotmem_shm.so
LoadModule unixd_module                 modules/mod_unixd.so

User daemon
Group daemon

ErrorLog /proc/self/fd/2

Header add Set-Cookie "SERVERID=sticky.%{BALANCER_WORKER_ROUTE}e; path=/" env=BALANCER_ROUTE_CHANGED

<Proxy "balancer://nodes_polling">
    BalancerMember "http://server-john:3000"    route=john
    BalancerMember "http://server-paul:3000"    route=paul
    BalancerMember "http://server-george:3000"  route=george
    BalancerMember "http://server-ringo:3000"   route=ringo
    ProxySet stickysession=SERVERID
</Proxy>

<Proxy "balancer://nodes_ws">
    BalancerMember "ws://server-john:3000"    route=john
    BalancerMember "ws://server-paul:3000"    route=paul
    BalancerMember "ws://server-george:3000"  route=george
    BalancerMember "ws://server-ringo:3000"   route=ringo
    ProxySet stickysession=SERVERID
</Proxy>

RewriteEngine On
RewriteCond %{HTTP:Upgrade} =websocket [NC]
RewriteRule /(.*) balancer://nodes_ws/$1 [P,L]
RewriteCond %{HTTP:Upgrade} !=websocket [NC]
RewriteRule /(.*) balancer://nodes_polling/$1 [P,L]

# must be bigger than pingInterval (25s by default) + pingTimeout (20s by default)
ProxyTimeout 60