Struct InboundSubscribeNamespace 

struct InboundSubscribeNamespace {
    message: SubscribeNamespace,
    state: SubscribeNamespaceStateMachine,
    overlaps: Option<u64>,
}

A SUBSCRIBE_NAMESPACE the peer sent, and how far the namespace subscription it opens has got.

Kept apart from subscribe_namespaces, which holds the ones this endpoint made: the two are answered by opposite ends, and this one is waiting for an answer from here.

Fields

message: SubscribeNamespace

The message as it arrived, which is what the answer is built from.

state: SubscribeNamespaceStateMachine

How far the namespace subscription it opens has got.

overlaps: Option<u64>

The namespace subscription this one overlapped when it arrived, which is when the rule about it is read.