'Platform-specific file transmission
Override this method in subclasses to support platform-specific
file transmission.  It is only called if the application\'s
return iterable (\'self.result\') is an instance of
\'self.wsgi_file_wrapper\'.
This method should return a true value if it was able to actually
transmit the wrapped file-like object using a platform-specific
approach.  It should return a false value if normal iteration
should be used instead.  An exception can be raised to indicate
that transmission was attempted, but failed.
NOTE: this method should call \'self.send_headers()\' if
\'self.headers_sent\' is false and it is going to attempt direct
transmission of the file1.'

def sendfile(self):

    return False
