Module libp2p_core::protocols_handler

Once we are connected to a node, a protocols handler handles one or more specific protocols on this connection.

This includes: how to handle incoming substreams, which protocols are supported, when to open a new outbound substream, and so on.

Each implementation of the ProtocolsHandler trait handles one or more specific protocols. Two ProtocolsHandlers can be combined together with the select() method in order to build a ProtocolsHandler that combines both. This can be repeated multiple times in order to create a handler that handles all the protocols that you wish.

Note: A ProtocolsHandler handles one or more protocols in relation to a specific connection with a remote. In order to handle a protocol that requires knowledge of the network as a whole, see the NetworkBehaviour trait.

Structs

DummyProtocolsHandler	Implementation of ProtocolsHandler that doesn't handle anything.
Fuse	Wrapper around a protocol handler and ignores all further method calls once it has shut down.
IntoProtocolsHandlerSelect	Implementation of IntoProtocolsHandler that combines two protocols into one.
MapInEvent	Wrapper around a protocol handler that turns the input event into something else.
MapOutEvent	Wrapper around a protocol handler that turns the output event into something else.
NodeHandlerWrapper	Wraps around an implementation of ProtocolsHandler, and implements NodeHandler.
NodeHandlerWrapperBuilder	Prototype for a NodeHandlerWrapper.
OneShotHandler	Implementation of ProtocolsHandler that opens a new substream for each individual message.
ProtocolsHandlerSelect	Implementation of ProtocolsHandler that combines two protocols into one.

Enums

KeepAlive	How long the connection should be kept alive.
ProtocolsHandlerEvent	Event produced by a handler.
ProtocolsHandlerUpgrErr	Error that can happen on an outbound substream opening attempt.

Traits

IntoProtocolsHandler	Prototype for a ProtocolsHandler.
ProtocolsHandler	Handler for a set of protocols for a specific connection with a remote.