[Users] catching exception in ScriptTagProxy

[John Cartwright - NOAA Federal]

Hello All,

I'm using GeoExt 1.1 with a Ext.data.JsonStore and having problems catching
the exception event when the server returns a non-200 response.  I
recognize that it's not strictly a GeoExt problem, but was hoping someone
here could help me anyway - hours of research have produced no success.

Here's the code:

var imageStore = new Ext.data.JsonStore({
  root: 'geotiffs',
  fields: ['value'],
  baseParams: {
  date: date
  },
  proxy:new Ext.data.ScriptTagProxy({
  url:'http://devel.ngdc.noaa.gov/mapviewer-support/viirs_thailand/images',
  listeners: {
  //TODO not working
  'exception': function(proxy, type, action, options, response) {
  console.log('loading exception: ');
  }
  }
  })
});

When the server returns a 404, an error is immediately printed in the
console, but the function above doesn't fire until the default timeout has
elapsed.

Can someone please help me?

Thanks!

--john
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