If <iron-ajax> makes a request and can't connect to the server (e.g. the webserver is down) it triggers the on-response handler.
I expect it to trigger the on-error handler and set lastError, as it does e.g. for a 404 response.
Possibly related to #19 and #17.
For clarity, below is a complete example (my-elem.html and index.html) and the steps I'm taking.
- Start a webserver, e.g.
python3 -m http.server
- Open http://localhost:8000
- Stop the webserver
- Clicking the first button does
<iron-ajax>.generateRequest() → the on-response handler runs and prints ev.detail.response null, ev.detail.xhr.status 0. Afterwards, the xhr.addEventListener('error', …) handler runs (at
|
this.rejectCompletes(error); |
). But my on-error handler doesn't run and lastError is not set.
- Clicking the second button makes a plain XMLHttpRequest which correctly handles this
net::ERR_CONNECTION_REFUSED case by running its onerror handler.
- my-elem.html
<link rel="import" href="bower_components/polymer/polymer.html">
<link rel="import" href="bower_components/iron-ajax/iron-ajax.html">
<dom-module id="my-elem">
<template>
<iron-ajax id="ajax" url="/dummy"
on-response="handleResp"
on-error="handleErr"></iron-ajax>
<button on-click="useIronAjax">Iron-Ajax</button>
<button on-click="useXHR">XmlHttpRequest</button>
</template>
</dom-module>
<script>
Polymer({
is: 'my-elem',
handleResp: function(ev) {
console.log('Response', ev.detail.response, 'status', ev.detail.xhr.status);
},
handleErr: function(ev) {
console.log('Error');
},
useIronAjax: function() {
this.$.ajax.generateRequest();
},
useXHR: function() {
var xhr = new XMLHttpRequest();
xhr.onerror = function() {
console.log('XHR error');
}
xhr.open('GET', '/dummy', true);
xhr.send();
}
});
</script><!DOCTYPE html>
<html>
<head>
<script src="bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
<link rel="import" href="my-elem.html">
</head>
<body>
<my-elem></my-elem>
</body>
</html>
If
<iron-ajax>makes a request and can't connect to the server (e.g. the webserver is down) it triggers theon-responsehandler.I expect it to trigger the
on-errorhandler and setlastError, as it does e.g. for a404response.Possibly related to #19 and #17.
For clarity, below is a complete example (
my-elem.htmlandindex.html) and the steps I'm taking.python3 -m http.server<iron-ajax>.generateRequest()→ theon-responsehandler runs and printsev.detail.response null,ev.detail.xhr.status 0. Afterwards, thexhr.addEventListener('error', …)handler runs (atiron-ajax/iron-request.html
Line 179 in 6ed75a4
on-errorhandler doesn't run andlastErroris not set.net::ERR_CONNECTION_REFUSEDcase by running itsonerrorhandler.