doc: Document options.webHook.host

doc/api.md

@@ -74,6 +74,7 @@ Emits `message` when a message arrives.
 | [options.polling.interval] | <code>String</code> &#124; <code>Number</code> | <code>300</code> | Interval between requests in miliseconds |
 | [options.polling.autoStart] | <code>Boolean</code> | <code>true</code> | Start polling immediately |
 | [options.webHook] | <code>Boolean</code> &#124; <code>Object</code> | <code>false</code> | Set true to enable WebHook or set options |
+| [options.webHook.host] | <code>String</code> | <code>0.0.0.0</code> | Host to bind to |
 | [options.webHook.port] | <code>Number</code> | <code>8443</code> | Port to bind to |
 | [options.webHook.key] | <code>String</code> |  | Path to file with PEM private key for webHook server.  The file is read **synchronously**! |
 | [options.webHook.cert] | <code>String</code> |  | Path to file with PEM certificate (public) for webHook server.  The file is read **synchronously**! |

src/telegram.js

@@ -47,6 +47,7 @@ class TelegramBot extends EventEmitter {
    * @param {String|Number} [options.polling.interval=300] Interval between requests in miliseconds
    * @param {Boolean} [options.polling.autoStart=true] Start polling immediately
    * @param {Boolean|Object} [options.webHook=false] Set true to enable WebHook or set options
+   * @param {String} [options.webHook.host=0.0.0.0] Host to bind to
    * @param {Number} [options.webHook.port=8443] Port to bind to
    * @param {String} [options.webHook.key] Path to file with PEM private key for webHook server.
    *  The file is read **synchronously**!

src/telegramWebHook.js

@@ -12,6 +12,7 @@ class TelegramBotWebHook {
    *
    * @param  {String} token Telegram API token
    * @param  {Boolean|Object} options WebHook options
+   * @param  {String} [options.host=0.0.0.0] Host to bind to
    * @param  {Number} [options.port=8443] Port to bind to
    * @param  {String} [options.healthEndpoint=/healthz] An endpoint for health checks that always responds with 200 OK
    * @param  {Function} callback Function for process a new update
@@ -24,11 +25,13 @@ class TelegramBotWebHook {
 
     this.token = token;
     this.options = options;
+    this.options.host = options.host || '0.0.0.0';
     this.options.port = options.port || 8443;
     this.options.https = options.https || {};
+    this.options.healthEndpoint = options.healthEndpoint || '/healthz';
     this.callback = callback;
     this._regex = new RegExp(this.token);
-    this._healthRegex = new RegExp(options.healthEndpoint || '/healthz');
+    this._healthRegex = new RegExp(this.options.healthEndpoint);
     this._webServer = null;
     this._open = false;
     this._requestListener = this._requestListener.bind(this);