Javascript XMLHttpRequest: Ignore invalid SSL Certificate

javascript networking xmlhttprequest ssl-certificate windows-desktop-gadgets
user535617 picture user535617 · Dec 20, 2010 · Viewed 22.8k times · Source

so I have been having trouble with grabbing information from a device that is interfaced with via https due to the fact that it has an invalid security certificate. I know the device is to be trusted and I don't have access to the server-side so I can't change it. I was wondering if there was any way to set up an XMLHttpRequest object in Javascript to just ignore an invalid SSL certificate and just grab the information anyway. As it is now it seems to just reject the certificate and stop. Thanks.

Answer

user535617 picture user535617 · Dec 20, 2010

Well I had found this solution before but it didn't work, this was because I was still using actual XMLHttpRequest though. When creating it using this statement: 

httpreq = new ActiveXObject("Msxml2.ServerXMLHTTP.3.0");

There is a method called setOption that is opened up for use:

httpreq.setOption(2, 13056);

With those parameters, the request now ignores the invalid certificate and grabs the information anyway. If I understand correctly this won't work with any non-Microsoft technology trying to run the script, but that's ok for the scope of my project.

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