Hyperswarm Relay

> :test_tube: This project is still experimental. Do not use it in production.

Relaying the Hyperswarm DHT over framed streams to bring decentralized networking to everyone.

Installation

``sh npm install @hyperswarm/dht-relay`

`Usage`

On the relaying side:

`js import DHT from 'hyperdht' import { relay } from '@hyperswarm/dht-relay'

relay(new DHT(), stream)`

On the relayed side:

`js import DHT from '@hyperswarm/dht-relay'

const dht = new DHT(stream)`

From here, the API matches that of the Hyperswarm DHT:

`$3`

As a convenience, we provide stream wrappers for common transport protocols. These may or may not be appropriate for your particular use case and so your mileage may vary.


TCP
The TCP wrapper is a re-export of  which adds both framing and encryption.
On the relaying side:

`js import net from 'net'

import DHT from 'hyperdht' import { relay } from '@hyperswarm/dht-relay' import Stream from '@hyperswarm/dht-relay/tcp'

const dht = new DHT() const server = net.createServer().listen(8080)

server.on('connection', (socket) => { relay(dht, new Stream(false, socket)) })`

On the relayed side:

`js import net from 'net'

import DHT from '@hyperswarm/dht-relay' import Stream from '@hyperswarm/dht-relay/tcp'

const socket = net.connect(8080) const dht = new DHT(new Stream(true, socket))`


WebSocket

The WebSocket wrapper is a simple Duplex stream that only adapts the interface of the WebSocket as the WebSocket API already provides its own framing and encryption.

On the relaying side:

`js import { WebSocketServer } from 'ws'

import DHT from 'hyperdht' import { relay } from '@hyperswarm/dht-relay' import Stream from '@hyperswarm/dht-relay/ws'

const dht = new DHT() const server = new WebSocketServer({ port: 8080 })

server.on('connection', (socket) => { relay(dht, new Stream(false, socket)) })`

On the relayed side:

`js import DHT from '@hyperswarm/dht-relay' import Stream from '@hyperswarm/dht-relay/ws'

const socket = new WebSocket('ws://localhost:8080') const dht = new DHT(new Stream(true, socket))`

`$3`

You can start a DHT relay in the command line:

`sh npm install -g @hyperswarm/dht-relay`

Run a DHT relay server:`sh dht-relay # [--port 49443] [--host 0.0.0.0] [--cert ] [--key ]`

If running behind a proxy like NGINX then add --behind-proxy so logging info is correct.

`Protocol`

A reference implementation of the relay protocol can be found in the lib/protocol.js module. The protocol is versioned and built on top of .

`$3`

All types are specified as their corresponding compact-encoding codec.

#### handshake (0)

1. uint8Flags -custodial: 12.fixed(32)The public key of the peer 3. (ifcustodial is set) fixed(64) The secret key

#### ping (1)

_Empty_

#### pong (2)

_Empty_

#### connect (3)

1. uint8Flags -custodial: 12.uint32The alias of the stream 3.fixed(32)The public key of the peer 4. (ifcustodial is set) fixed(64)The secret key 5.fixed(32) The public key of the remote peer

#### connection (4)

1. uint8Flags -custodial: 12.uint32The alias of the stream 3.uint32The alias of the server 4.fixed(32)The public key of the remote peer 5. (ifcustodial is set) fixed(64)The Noise handshake hash 6. (ifcustodial is not set) uint32 The ID of the Noise handshake session

#### connected (5)

1. uint32The alias of the stream 2.uint32 The remote alias of the stream

#### incoming (6)

1. uint32The ID of the request 2.uint32The alias of the server 3.fixed(32)The public key of the remote peer 4.buffer The Noise handshake payload

#### deny (7)

1. uint32 The ID of the request

#### accept (8)

1. uint32 The ID of the request

#### destroy (9)

1. uint8Flags -paired: 1-error: 22. (ifpaired is set) uint32The alias of the stream 2. (ifpaired is not set) uint32The remote alias of the stream 3. (iferror is set) string The reason the stream was destroyed

#### listen (10)

1. uint8Flags -custodial: 12.uint32The alias of the server 3.fixed(32)The public key of the server 4. (ifcustodial is set) fixed(64) The secret key

#### listening (11)

1. uint32The alias of the server 2.uint32The remote alias of the server 3. [ipv4Address][ipv4address] The address of the server

#### close (12)

1. uint32 The alias of the server

#### closed (13)

1. uint32 The alias of the server

#### open (14)

1. uint8Flags -custodial: 12.uint32The alias of the stream 3.uint32The alias of the server 4. (ifcustodial is set) fixed(64)The Noise handshake hash 5. (ifcustodial is not set) uint32 The ID of the Noise handshake session

#### end (15)

1. uint32 The alias of the stream

#### data (16)

1. uint32The alias of the stream 2.array(buffer) The data sent

#### result (17)

1. uint32The query ID 2.buffer The query specific data

#### finished (18)

1. uint32 The query ID

#### lookup (19)

1. uint32The query ID 2.fixed(32) The topic to look up

#### announce (20)

1. uint8Flags -custodial: 12.uint32The query ID 3.fixed(32)The topic to announce 4.fixed(32)The public key to announce on 5. (ifcustodial is set) fixed(64) The secret key

#### unannounce (21)

1. uint8Flags -custodial: 12.uint32The query ID 3.fixed(32)The topic to unannounce 4.fixed(32)The public key that was announced on 5. (ifcustodial is set) fixed(64) The secret key

#### signAnnounce (22)

1. uint32The ID of the request 2.uint32The alias of the signee 3.fixed(32)The roundtrip token of the peer 4.bufferThe ID of the peer 5.array([ipv4Address][ipv4address]) The addresses that may relay messages

#### signUnannounce (23)

#### signature (24)

1. uint32The ID of the request 2.buffer The signature

#### noiseSend (25)

1. uint8Flags -isInitiator: 12.uint32The ID of the handshake session 3. (ifisInitiatoris set) The alias of the remote stream 4.buffer The Noise handshake payload

#### noiseReceive (26)

1. uint8Flags -isInitiator: 12.uint32The ID of the handshake session 3. (ifisInitiatoris not set) The alias of the server 4.buffer The Noise handshake payload

#### noiseReply (27)

1. uint8Flags -isInitiator: 1-complete: 22.uint32The ID of the handshake session 3.bufferThe Noise handshake payload 4. (ifisInitiator and complete are not set) fixed(32)The public key of the remote peer 5. (ifcomplete is set) fixed(32)The ID of the remote stream 6. (ifcomplete is set) fixed(32)` The holepunch secret

License

ISC

[ipv4address]: https://github.com/compact-encoding/compact-encoding-net#ipv4address

Hyperswarm Relay

> :test_tube: This project is still experimental. Do not use it in production.

Relaying the Hyperswarm DHT over framed streams to bring decentralized networking to everyone.

Installation

``sh npm install @hyperswarm/dht-relay`

`Usage`

On the relaying side:

`js import DHT from 'hyperdht' import { relay } from '@hyperswarm/dht-relay'

relay(new DHT(), stream)`

On the relayed side:

`js import DHT from '@hyperswarm/dht-relay'

const dht = new DHT(stream)`

From here, the API matches that of the Hyperswarm DHT:

`$3`

As a convenience, we provide stream wrappers for common transport protocols. These may or may not be appropriate for your particular use case and so your mileage may vary.


TCP
The TCP wrapper is a re-export of  which adds both framing and encryption.
On the relaying side:

`js import net from 'net'

import DHT from 'hyperdht' import { relay } from '@hyperswarm/dht-relay' import Stream from '@hyperswarm/dht-relay/tcp'

const dht = new DHT() const server = net.createServer().listen(8080)

server.on('connection', (socket) => { relay(dht, new Stream(false, socket)) })`

On the relayed side:

`js import net from 'net'

import DHT from '@hyperswarm/dht-relay' import Stream from '@hyperswarm/dht-relay/tcp'

const socket = net.connect(8080) const dht = new DHT(new Stream(true, socket))`


WebSocket

The WebSocket wrapper is a simple Duplex stream that only adapts the interface of the WebSocket as the WebSocket API already provides its own framing and encryption.

On the relaying side:

`js import { WebSocketServer } from 'ws'

import DHT from 'hyperdht' import { relay } from '@hyperswarm/dht-relay' import Stream from '@hyperswarm/dht-relay/ws'

const dht = new DHT() const server = new WebSocketServer({ port: 8080 })

server.on('connection', (socket) => { relay(dht, new Stream(false, socket)) })`

On the relayed side:

`js import DHT from '@hyperswarm/dht-relay' import Stream from '@hyperswarm/dht-relay/ws'

const socket = new WebSocket('ws://localhost:8080') const dht = new DHT(new Stream(true, socket))`

`$3`

You can start a DHT relay in the command line:

`sh npm install -g @hyperswarm/dht-relay`

Run a DHT relay server:`sh dht-relay # [--port 49443] [--host 0.0.0.0] [--cert ] [--key ]`

If running behind a proxy like NGINX then add --behind-proxy so logging info is correct.

`Protocol`

A reference implementation of the relay protocol can be found in the lib/protocol.js module. The protocol is versioned and built on top of .

`$3`

All types are specified as their corresponding compact-encoding codec.

#### handshake (0)

1. uint8Flags -custodial: 12.fixed(32)The public key of the peer 3. (ifcustodial is set) fixed(64) The secret key

#### ping (1)

_Empty_

#### pong (2)

_Empty_

#### connect (3)

#### connection (4)

#### connected (5)

1. uint32The alias of the stream 2.uint32 The remote alias of the stream

#### incoming (6)

1. uint32The ID of the request 2.uint32The alias of the server 3.fixed(32)The public key of the remote peer 4.buffer The Noise handshake payload

#### deny (7)

1. uint32 The ID of the request

#### accept (8)

1. uint32 The ID of the request

#### destroy (9)

#### listen (10)

1. uint8Flags -custodial: 12.uint32The alias of the server 3.fixed(32)The public key of the server 4. (ifcustodial is set) fixed(64) The secret key

#### listening (11)

1. uint32The alias of the server 2.uint32The remote alias of the server 3. [ipv4Address][ipv4address] The address of the server

#### close (12)

1. uint32 The alias of the server

#### closed (13)

1. uint32 The alias of the server

#### open (14)

#### end (15)

1. uint32 The alias of the stream

#### data (16)

1. uint32The alias of the stream 2.array(buffer) The data sent

#### result (17)

1. uint32The query ID 2.buffer The query specific data

#### finished (18)

1. uint32 The query ID

#### lookup (19)

1. uint32The query ID 2.fixed(32) The topic to look up

#### announce (20)

1. uint8Flags -custodial: 12.uint32The query ID 3.fixed(32)The topic to announce 4.fixed(32)The public key to announce on 5. (ifcustodial is set) fixed(64) The secret key

#### unannounce (21)

1. uint8Flags -custodial: 12.uint32The query ID 3.fixed(32)The topic to unannounce 4.fixed(32)The public key that was announced on 5. (ifcustodial is set) fixed(64) The secret key

#### signAnnounce (22)

#### signUnannounce (23)

#### signature (24)

1. uint32The ID of the request 2.buffer The signature

#### noiseSend (25)

1. uint8Flags -isInitiator: 12.uint32The ID of the handshake session 3. (ifisInitiatoris set) The alias of the remote stream 4.buffer The Noise handshake payload

#### noiseReceive (26)

1. uint8Flags -isInitiator: 12.uint32The ID of the handshake session 3. (ifisInitiatoris not set) The alias of the server 4.buffer The Noise handshake payload

#### noiseReply (27)

License

ISC

[ipv4address]: https://github.com/compact-encoding/compact-encoding-net#ipv4address