Added an option to skip httpServer creation

README.md

@@ -52,6 +52,7 @@ const bot = new TeleBot({
         proxy: 'http://username:[email protected]:8080' // Optional. An HTTP proxy to be used.
     },
     webhook: { // Optional. Use webhook instead of polling.
+        createServer: true, //Optional. Specifies whether httpServer or httpsServer instance should be created or not. Defaults to true. When set to false, bot.start() returns a promise which resolves with a listener function to be attached to the server manually. 
         key: 'key.pem', // Optional. Private key for server.
         cert: 'cert.pem', // Optional. Public key.
         url: 'https://....', // HTTPS url to send updates to.
@@ -313,7 +314,7 @@ Creates inlineKeyboard object for answerList articles.
 
 ##### `start()`
 
-Start polling updates.
+Start polling updates. If createServer is set to false in webhook options, then the method returns a promise resolving to a listener function suitable for usage with httpServer/httpsServer createServer method.
 
 ##### `stop(<message>)`
 

examples/webhook-custom-http-server.js

@@ -0,0 +1,16 @@
+const TeleBot = require('../');
+
+const bot = new TeleBot({
+    token: 'TELEGRAM_BOT_TOKEN',
+    webhook: {
+        createServer: false,
+        url: 'https://....'
+    }
+});
+
+bot.on('text', msg => bot.sendMessage(msg.from.id, msg.text));
+
+bot.start().then(listener => {
+    const server = http.createServer(listener);
+    server.listen(3200, '0.0.0.0');
+});

lib/webhook.js

@@ -12,18 +12,24 @@ module.exports = (bot, opt) => {
     const path = url.parse(opt.url).pathname;
     const key = opt.key && fs.readFileSync(opt.key);
     const cert = opt.cert && fs.readFileSync(opt.cert);
-
-    // Create server
-    const server = key && cert ?
-        https.createServer({key, cert}, listener) :
-        http.createServer(listener);
-
-    // Start server
-    server.listen(port, host, () => {
-        if (bot.logging) {
-            console.log(`[bot.webhook] started${ key ? ' secure' : ''} server on "${ host }:${ port }"`);
-        }
-    });
+    const createServer = opt.createServer === false ? false : true;
+
+    if (createServer) {
+        // Create server
+        const server = key && cert ?
+            https.createServer({key, cert}, listener) :
+            http.createServer(listener);
+
+        // Start server
+        server.listen(port, host, () => {
+            if (bot.logging) {
+                console.log(`[bot.webhook] started${ key ? ' secure' : ''} server on "${ host }:${ port }"`);
+            }
+        });
+    }else{
+        // Server will be created by consumer, just return the listener
+        return listener;
+    }
 
     // Request listener
     function listener(req, res) {