Do you mean "how to extract BrowserUserAgent from that error"? You do not need to do that.
When "new Image().src='...'" sends request to your server - your server has all that information available: IPAddress, BrowserUserAgent, Time + all data that is sent in errmessage, errurl, errline parameters.
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timeasmymeasure
BrowserUserAgent
Date: 2016-02-07 03:25 pm (UTC)You do not need to do that.
When "new Image().src='...'" sends request to your server - your server has all that information available: IPAddress, BrowserUserAgent, Time + all data that is sent in errmessage, errurl, errline parameters.