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javascriptproxyxmlhttprequest

Send XMLHttpRequest behind proxy

I want to execute a POST via the XMLHttpRequest Object below in TypeScript. Sadly I keep getting the following error:

407: Proxy Authentication Failed. Forefront TMG requires authorization to fulfill the request.

My Code: 

        var oReq = new XMLHttpRequest();
        oReq.withCredentials = true;
        oReq.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
        oReq.open("POST", "https://api.sandbox.paypal.com/v1/oauth2/token", true, clientID, secret);
        oReq.onload = function() {
            console.log(oReq.responseText);
        };
        oReq.send();

I went through several Posts on how to configure a proxy for these requests but nothing really worked. Since our Proxy only supports ntlm I tried installing cntlm and setting the proxy to http://credentials@localhost:Port which worked for installing stuff via npm but sadly not for this issue. The only thing I did not try is configuring the proxy within the code. I did not find a way to configure it with my credentials which I need to pass.

Solution

  • There is no way to use the XHR in my context via emulator, since I was using Xcode 7. Xcode does not support the usage of a proxy that requires authentication since Xcode 6.

    Reference:

    iOS Simulator does not support the use of network proxy servers that require authentication. (14889876)

    from the Xcode 6 Release Notes.