Add proxy set:

- Add app.set('trust proxy', 3)
- Add route /api/v1/ip when in development mode

Signed-off-by: Fred Boniface <fred@fjla.uk>

app.js

@@ -5,6 +5,7 @@
 // different license applies.
 
 console.log(`Initialising OwlBoard`)
+const mode = process.env.NODE_ENV || "development"
 
 // External Requires
 const express     = require('express');
@@ -38,6 +39,7 @@ const limiter = rateLimit({
 })
 
 // Print version number:
+log.out(`app: Starting OwlBoard in ${mode} mode`, "init")
 log.out(`app: Starting OwlBoard - Backend Version: ${version.app} - API versions: ${version.api}`, "init");
 
 // Test for required vars:
@@ -75,6 +77,12 @@ app.use('/api/v1/register', regRtr)
 app.use('/api/v1/ldbs', authenticate)
 app.use('/api/v1/auth/test', authenticate) // Returns 401 if auth failed, 404 if successful.
 
+// Number of proxies:
+app.set('trust proxy', 3)
+mode === "development"
+  ? app.get('/api/v1/ip', (request, response) => response.send(request.ip))
+  : null
+
 // Start Express
 app.listen(srvPort, srvListen, (error) =>{
   if(!error) {