in r2007b, I get
      Static method or constructor invocations cannot be indexed.
      Do not follow the call to the static method or constructor with
      any additional indexing or dot references.
when calling the code as-was; fixed by creating a temporary variable.

I am not sure if this is an 'old Matlab' problem or an issue of
using a non-standard browser for HTTP requests, but I was getting
out-of-bound errors when trying to set the header.Get.Protocol field.

I cannot find any place in the codebase that even *uses* the .Protocol,
but perhaps a better default should be filled in.