'Error getting response stream (ReadDoneAsync2): ReceiveFailure'

As I said, SBBs are fine, the problem is with the Bridge only. And I don’t see how cURL might help.

The problem is that sometimes the socket read returns 0 bytes:

var nread = await RequestStream.InnerStream.ReadAsync (
					buffer.Buffer, buffer.Offset, buffer.Size, cancellationToken).ConfigureAwait (false);

if (nread == 0)
    throw GetReadException (WebExceptionStatus.ReceiveFailure, null, "ReadDoneAsync2");

And only with the Bridge, not SBBs.

I might dig deeper into ReadAsync() to see why it might return 0 bytes, but not timeout.