java - WebSocket in Javascript not connecting to servlet -

i trying use javascript websockets connect java servlet, onerror function being called, , not providing information. javascript:

var websocket = new websocket('ws://localhost:8080/test');  websocket.onerror = function(event) {   onerror(event); };  websocket.onclose = function(event) {     onclose(event); };  websocket.onopen = function(event) {   onopen(event); };  websocket.onmessage = function(event) {   onmessage(event); };  function onclose(event) {     var code = event.code;     var reason = event.reason;     var wasclean = event.wasclean;     alert(code + "; " + reason + "; " + wasclean); }  function onmessage(event) {     //do stuff }  function onopen(event) {   websocket.send('opening socket'); }  function onerror(event) {   alert(event.message); } 

for servlet, have

@serverendpoint("/test") public class transcodersnsservlet extends httpservlet {      ... } 

the useful error codes i've been able find event.code = 1006, event.wasclean = false. browser using supports websockets. trying run on elasticbeanstalk. appreciated