git clone https://github.com/comlounge/camper.git camper

server {

    listen 80;
    
    server_name mydomain;

    access_log /var/log/nginx/mydomain.access.log rt_cache;
    error_log /var/log/nginx/mydomain.error.log;

    add_header X-Proxy-Cache $upstream_cache_status;

    # we only use the pads here and route it to the etherpad lite instance
    # which runs on port 9999 in our case
    location /_pads/ {

        proxy_pass             http://127.0.0.1:9999/;
        proxy_set_header       Host $host;
        proxy_pass_header Server;

        # be carefull, this line doesn't override any proxy_buffering on set in a conf.d/file.conf
        proxy_buffering off;
        proxy_set_header X-Real-IP $remote_addr;  # http://wiki.nginx.org/HttpProxyModule
        proxy_set_header X-Forwarded-For $remote_addr; # EP logs to show the actual remote IP
        proxy_set_header X-Forwarded-Proto $scheme; # for EP to set secure cookie flag when https is used
        proxy_set_header Host $host;  # pass the host header
        proxy_http_version 1.1;  # recommended with keepalive connections

        # WebSocket proxying - from http://nginx.org/en/docs/http/websocket.html
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
    }

    # the camper instance runs on 9998
    location / {
        proxy_pass             http://127.0.0.1:9998/;
        proxy_set_header       Host $host;
        proxy_pass_header Server;

        # be carefull, this line doesn't override any proxy_buffering on set in a conf.d/file.conf
        proxy_buffering off;
        proxy_set_header X-Real-IP $remote_addr;  # http://wiki.nginx.org/HttpProxyModule
        proxy_set_header X-Forwarded-For $remote_addr; # EP logs to show the actual remote IP
        proxy_set_header X-Forwarded-Proto $scheme; # for EP to set secure cookie flag when https is used
        proxy_set_header Host $host;  # pass the host header                                                   
        proxy_set_header       X-Url-Scheme https;
        proxy_http_version 1.1;  # recommended with keepalive connections                                                    

        # WebSocket proxying - from http://nginx.org/en/docs/http/websocket.html
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
    }
}


map $http_upgrade $connection_upgrade {
    default upgrade;
    ''      close;
}