How to fix NativeScript file upload on some files aborts the upload after just 196608 bytes

Question

On some files, (ios) at the moment is the only platform I'm testing on, if the file is under 30 megs everything seems to work using nativescript-background-http to upload a video file to the server. If the filesize is over 30 megs the upload aborts at exactly 196608 bytes every time.

I know it's not a server issue aborting the upload. As I have set both the POST Size Limits in IIS and the Max File Size Limit in ColdFusion to 500 megs.

mediafilepicker.on("getFiles", function (res) {
    let results = res.object.get('results');

    if (results) {

        for (let i = 0; i < results.length; i++) {

            let result = results[i];
            let file = result.file;

            if (result.file && applicationModule.ios) 
            {
                console.dir(result);

                // We can copy it to app directory, if need
                //let fileName = "myTmpImage.mov";

                var session = bghttp.session("image-upload");
                var sFile = result.file.replace("file://", "");

                var filename = sFile.substring(sFile.lastIndexOf('/') + 1);
                var mimetype = filename.substring(filename.lastIndexOf('.') + 1);

                console.log(sFile);

                var request = {
                    url: 'http://www.mobilecoach.me/test_upload.cfm',
                    method: "POST",
                    headers: {
                        "Content-Type": "application/octet-stream",
                        "File-Name" : filename
                    },
                    description: "Uploading"
                };

                var params = [
                    { name: "file", filename: sFile, mimeType: "video/" + mimetype }
                    ];

                task = session.multipartUpload(params, request);
                task.on("progress", logEvent);
                task.on("error", logEvent);
                task.on("complete", logEvent);

                function logEvent(e) {
                    console.log("currentBytes: " + e.currentBytes);
                    console.log("totalBytes: " + e.totalBytes);
                    console.log(e.eventName);

                    if(e.eventName == "complete")
                    {
                        dialogsModule.alert({
                            message: "Upload Completed",
                            okButtonText: "Ok",
                            cancelable: false
                            }).then(() => {

                        })
                    }
                }
            }
        }
    }
});

Like I said on less than 30 meg files works fine. Over 30 megs upload aborts without error just completes/aborts @ exactly 196608 bytes.