Downloading file from WCF REST with Azure Blob Storage

Question

I have a WCF REST service with Azure Blob Storage. I don't want to use my service as a proxy with a stream, so I wanted to redirect client's request to the absolute blob url but it redirects to the file and tries to open it directly. All I want is starting download process when server redirects the request to the absolute blob url. The code which I have tried is below:

    var sas = blob.GetSharedAccessSignature(new SharedAccessPolicy
    {
        Permissions = SharedAccessPermissions.Read,
        SharedAccessStartTime = DateTime.UtcNow,
        SharedAccessExpiryTime = DateTime.UtcNow + TimeSpan.FromMinutes(1)
    });
    WebOperationContext.Current.OutgoingResponse.ContentType = blob.Properties.ContentType;
    WebOperationContext.Current.OutgoingResponse.ContentLength = blob.Properties.Length;
    WebOperationContext.Current.OutgoingResponse.Location = blob.Uri.AbsoluteUri+sas;
    WebOperationContext.Current.OutgoingResponse.StatusCode = HttpStatusCode.Redirect;

PS I tried to change status code to Redirect, Moved.. etc. but nothing changes.

Update If I change ContentType to application/octet-stream, it results like this in IE:

<base64Binary xmlns="http://schemas.microsoft.com/2003/10/Serialization/">
...
</base64Binary>

Answer 1

Possible duplicate of this question .

Since Stive Marx sais that there is no way to control the "content-disposition" header for Azure Lbob, there is no way for force browser (IE) to download the file. Having the content-type set to "application/octet-stream" might force some browsers to downlaod the file, instead of opening it, but apparently it does not work for IE.