Implementations

Mandatory Core Protocol Features

Drivers are assumed to implement all core features defined in the Protocol document. The core scope includes the following (and is not limited to) :

• Metadata and Payload frames
• All 4 interaction models : Fire-and-forget, request/response, requestStream, requestChannel
• Request-N frame : application level flow control
• Fragmentation/Reassembly : Drivers are assumed to fully encode/decode the expected user data type
• Keep-Alive frame : A responder receiving a keep-alive frame must reply a keep-alive frame
• Error Frame : in order to fully support connection lifecycle
• Handling the unexpected : If Resumption, Leasing or an extension is not supported, rejected error frames must be used

Supported Core Protocol Features Matrix

Driver	Transport(s)	Version	Core Support	Resumption	Leasing	RPC
rsocket-java	aeron (UDP) akka reactor-netty (TCP, websocket)	1.0	x		x	x
rsocket-js	nodejs net (TCP) plain (websocket)	1.0	x	x		x
rsocket-net	System.Net (TCP, websocket)	1.0	x			x
rsocket-cpp	Folly (TCP)	1.0	x	x
rsocket-go	Go NET (TCP)	1.0	x			x
rsocket-kotlin	ktor multiplatform (TCP, websocket)	1.0	x
rsocket-py	asyncio (TCP, websocket)	1.0	x		x
rsocket-swift	SwiftNIO (TCP, WebSocket) Network.framework through NIO Transport Services	0.0.1
rsocket-rust	Tokio (TCP, WebSocket)	0.1	x