# File lib/gssapi/simple.rb, line 150
    def display_name
      raise GssApiError.new(), "No context accepted yet. Call #{self.class.name}#accept_context(in_token) first" if @client.nil?

      output_name = GSSAPI::LibGSSAPI::ManagedGssBufferDesc.new

      min_stat = FFI::MemoryPointer.new :OM_uint32
      maj_stat = LibGSSAPI.gss_display_name(min_stat,
                                            @client.get_pointer(0),
                                            output_name.pointer,
                                            nil)

      if maj_stat != GSSAPI::LibGSSAPI::GSS_S_COMPLETE
        raise GssApiError.new(maj_stat, min_stat),
          "gss_display_name did not return GSS_S_COMPLETE but #{ maj_stat }"
      end

      output_name.value
    end