Add HTTPS support by giving an SSL Cert and Key

packages/cli/config/index.ts

@@ -175,6 +175,18 @@ const config = convict({
 		env: 'N8N_PROTOCOL',
 		doc: 'HTTP Protocol via which n8n can be reached'
 	},
+	ssl_key: {
+		format: String,
+		default: 'server.key',
+		env: 'N8N_SSL_KEY',
+		doc: 'SSL Key for HTTPS Protocol'
+	},
+	ssl_cert: {
+		format: String,
+		default: 'server.pem',
+		env: 'N8N_SSL_CERT',
+		doc: 'SSL Cert for HTTPS Protocol'
+	},
 
 	security: {
 		basicAuth: {

packages/cli/src/Server.ts

@@ -97,6 +97,10 @@ class App {
 	push: Push.Push;
 	versions: IPackageVersions | undefined;
 
+	protocol: string;
+	ssl_key:  string;
+	ssl_cert: string;
+
 	constructor() {
 		this.app = express();
 
@@ -112,6 +116,10 @@ class App {
 		this.push = Push.getInstance();
 
 		this.activeExecutionsInstance = ActiveExecutions.getInstance();
+
+		this.protocol = config.get('protocol');
+		this.ssl_key  = config.get('ssl_key');
+		this.ssl_cert = config.get('ssl_cert');
 	}
 
 
@@ -1255,7 +1263,22 @@ export async function start(): Promise<void> {
 
 	await app.config();
 	
-	app.app.listen(PORT, async () => {
+	// Differntiate HTTP and HTTPS server
+	const http  = require('http');
+	const https = require('https');
+	const fs    = require('fs');
+	var server;
+
+	if(app.protocol === 'https'){
+		const privateKey = fs.readFileSync(app.ssl_key,'utf8');
+		const cert = fs.readFileSync(app.ssl_cert,'utf8');
+		const credentials = {key: privateKey,cert: cert};
+		server = https.createServer(credentials,app.app);
+	}else{
+		server = http.createServer(app.app);
+	}
+
+	server.listen(PORT, async () => {
 		const versions = await GenericHelpers.getVersions();
 		console.log(`n8n ready on port ${PORT}`);
 		console.log(`Version: ${versions.cli}`);