Hi Daniel
Further to the suggestion i made in http://scn.sap.com/thread/3383994 that I didn't think this was possible with the FileUploader control, I found some time today to investigate further.
I tried to use a proxy to set the http headers like Jibin Joy suggested in http://scn.sap.com/thread/3262540 the issue like he found was that the data that is posted is encoded as multipart/form-data and the Gateway service is expecting a media resource with the correct content type eg image/gif.
I managed to get the FileLoader control posting successfully to Gateway services by extending the control, replacing the form.submit with an AJAX call.
sap.ui.commons.FileUploader.extend("ODataFileLoader", {
... upload : function() {
... var file = jQuery.sap.domById("upload_1-fu").files[0]; var oRequest = sap.ui.getCore().getModel(this.getModelName())._createRequest(); var oHeaders = { "x-csrf-token": oRequest.headers['x-csrf-token'], "slug": this.getSlug(), }; jQuery.ajax({ type: 'POST', url: this.getUploadUrl(), headers: oHeaders, cache: false, contentType: false, processData: false, data: file, success: _handleSuccess, error: _handleError });The code gets the CSRF token from a nominated Model and uses this with a Slug header that can be dynamically set.
You can find a working example at https://github.com/jasper07/sapui5bin/blob/master/ODataFileUpload.html
Cheers
John P