Message.disableFeature

Disables the actions of ifaceSessionFeatures with the given feature_type (or a subclass of that type) on msg.

msg is processed as though the feature(s) hadn't been added to the session. Eg, passing #SOUP_TYPE_CONTENT_SNIFFER for feature_type will disable Content-Type sniffing on the message.

You must call this before queueing msg on a session; calling it on a message that has already been queued is undefined. In particular, you cannot call this on a message that is being requeued after a redirect or authentication.