add path

@@ -15,6 +15,8 @@ const request = require('request');
  *   measurement:'api-duration'
  *   duration:2000 //ms per 200 send message,
  *   records:100 //when message over 100 send them
+ *   immediate: true // send message immediate not wart records count if true
+ *   path: "/url", // set target path default is /write
  * }
  */
 
@@ -26,6 +28,8 @@ class Sender extends EventEmitter {
         this.options = options;
         this.options.duration = this.options.duration || 2000;
         this.options.records = this.options.records || 100;
+        this.options.path = this.options.path || '/write';
+        this.options.port = this.options.port || 80;
 
         if (!this.options.db || !this.options.host) {
             console.error('config error: db or host undefined!');
@@ -131,7 +135,7 @@ class Sender extends EventEmitter {
             headers: {
                 'content-type': 'text/plain'
             },
-            url: `http://${this.options.host}:${this.options.port || 80}/write`,
+            url: `http://${this.options.host}:${this.options.port}${this.options.path}`,
             qs: {
                 db: this.options.db
             },