Lighttpd

Hello all,

First a big thanks to all the devs of lighttpd, awesome work!

I am trying to deploy the node-red gui via the lighttpd server.
Lighty has quite a few tasks in my setup:
- deploying websites
- redirecting http to https
- proxy requests to a node js backend server (express)
- deploying the node red gui (hosted by express)
- deploying the node red dashboard (hosted by express)

Everything works so far despite the websocket comunication of the dashboard and the gui of node red when the proxy is active.

Here is my setup:

OS:Debian Stretch 9.4
Lighty: lighttpd/1.4.45 (ssl) Build-Date: Jan 14 2017 21:07:19
lighttpd.conf :

server.modules = (
    "mod_access",
    "mod_alias",
    "mod_compress",
    "mod_redirect",
    "mod_proxy" 
)

server.document-root        = "/var/www/html" 
server.upload-dirs          = ( "/var/cache/lighttpd/uploads" )
server.errorlog             = "/var/log/lighttpd/error.log" 
server.pid-file             = "/var/run/lighttpd.pid" 
server.username             = "www-data" 
server.groupname            = "www-data" 
server.port                 = 80

index-file.names            = ( "index.php", "index.html", "index.lighttpd.html" )
url.access-deny             = ( "~", ".inc" )
static-file.exclude-extensions = ( ".php", ".pl", ".fcgi" )

compress.cache-dir          = "/var/cache/lighttpd/compress/" 
compress.filetype           = ( "application/javascript", "text/css", "text/html", "text/plain" )

# default listening port for IPv6 falls back to the IPv4 port
include_shell "/usr/share/lighttpd/use-ipv6.pl " + server.port
include_shell "/usr/share/lighttpd/create-mime.assign.pl" 
include_shell "/usr/share/lighttpd/include-conf-enabled.pl" 

$SERVER["socket"] == ":443" {
ssl.engine = "enable" 
ssl.pemfile = "/etc/lighttpd/certs/lighttpd.pem" 
}

$HTTP["scheme"] == "http" {
$HTTP["host"] =~ ".*" {
url.redirect = (".*" => "https://%0$0")
}
}

#Node
$HTTP["host"] =~ ".*" { 
proxy.server = ( "" => (( "host" => "127.0.0.1", "port" => 8000)))
proxy.header = ( "upgrade" => "enable" )
}

My express server:

var http = require('http');
var express = require("express");
var RED = require("node-red");
var path = require("path");

// Create an Express app
var app = express();

// Add a simple route for static content served from 'public'
app.use("/",express.static("public"));

// Create a server
var server = http.createServer(app);

// Create the settings object - see default settings.js file for other options
var settings = {
    httpAdminRoot:"/red",
    httpNodeRoot: "/api",
    userDir:"/home/nol/.nodered/",
    functionGlobalContext: { },    // enables global context
    editorTheme: {
        page: {
            title: "" 
        },
        header: {
            title: " " 
        }
    }
};

// Initialise the runtime with a server and settings
RED.init(server,settings);

// Serve the editor UI from /red
app.use(settings.httpAdminRoot,RED.httpAdmin);

// Serve the http nodes UI from /api
app.use(settings.httpNodeRoot,RED.httpNode);

// routes to serve the static HTML files
app.use(express.static(__dirname +'/'));

server.listen(8000);

// Start the runtime
RED.start();

I can access the node red dashboard under http://192.168.80.163/api/ui/
and the node red gui under https://192.168.80.163/red
Everything displays correctly but the websocket requests return error codes:

Gui:

Request URL: wss://192.168.80.163/red/comms
Request Method: GET
Status Code: 404 Not Found

Dashboard:

Request URL: wss://192.168.80.163/api/ui/socket.io/?EIO=3&transport=websocket&sid=VfgHCGXTGIzsJ1fwAAAF
Request Method: GET
Status Code: 400 Bad Request

If I bypass lighty and access everything directly with the ip and port (e.g. http://192.168.80.163:8000/api/ui/)
everything works fine including the websocket requests.
When I compare the two requests (proxy vs no proxy) they look like this:

Proxy:
wss://192.168.80.163/api/ui/socket.io/?EIO=3&transport=websocket&sid=z5P20xqPzt5LHK0VAAAH
No Proxy:
ws://192.168.80.163:8000/api/ui/socket.io/?EIO=3&transport=websocket&sid=cpd4eBbZri3kUHByAAAG

I am a bit of a noob with this so every bit of help is appreciated.

Thanks in advance!