mirror of
https://github.com/fluencelabs/js-libp2p
synced 2025-04-24 18:12:14 +00:00
de30c2cec7
* feat: limit protocol streams per-connection Uses the `maxInboundStreams` and `maxOutboundStreams` of the `registrar.handle` opts to limit the number of concurrent streams open on each connection on a per-protocol basis. Both values default to 1 so some tuning will be necessary to set appropriate values for some protocols. * chore: make error codes consistent * chore: fix up examples
86 lines
2.4 KiB
JavaScript
86 lines
2.4 KiB
JavaScript
/* eslint-disable no-console */
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import { createLibp2p } from 'libp2p'
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import { TCP } from '@libp2p/tcp'
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import { WebSockets } from '@libp2p/websockets'
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import { Noise } from '@chainsafe/libp2p-noise'
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import { Mplex } from '@libp2p/mplex'
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import { pipe } from 'it-pipe'
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import { toString as uint8ArrayToString } from 'uint8arrays/to-string'
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import { fromString as uint8ArrayFromString } from 'uint8arrays/from-string'
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const createNode = async (transports, addresses = []) => {
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if (!Array.isArray(addresses)) {
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addresses = [addresses]
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}
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const node = await createLibp2p({
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addresses: {
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listen: addresses
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},
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transports: transports,
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connectionEncryption: [new Noise()],
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streamMuxers: [new Mplex()]
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})
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await node.start()
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return node
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}
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function printAddrs(node, number) {
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console.log('node %s is listening on:', number)
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node.getMultiaddrs().forEach((ma) => console.log(ma.toString()))
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}
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function print ({ stream }) {
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pipe(
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stream,
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async function (source) {
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for await (const msg of source) {
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console.log(uint8ArrayToString(msg))
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}
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}
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)
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}
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;(async () => {
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const [node1, node2, node3] = await Promise.all([
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createNode([new TCP()], '/ip4/0.0.0.0/tcp/0'),
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createNode([new TCP(), new WebSockets()], ['/ip4/0.0.0.0/tcp/0', '/ip4/127.0.0.1/tcp/10000/ws']),
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createNode([new WebSockets()], '/ip4/127.0.0.1/tcp/20000/ws')
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])
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printAddrs(node1, '1')
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printAddrs(node2, '2')
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printAddrs(node3, '3')
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node1.handle('/print', print)
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node2.handle('/print', print)
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node3.handle('/print', print)
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await node1.peerStore.addressBook.set(node2.peerId, node2.getMultiaddrs())
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await node2.peerStore.addressBook.set(node3.peerId, node3.getMultiaddrs())
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await node3.peerStore.addressBook.set(node1.peerId, node1.getMultiaddrs())
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// node 1 (TCP) dials to node 2 (TCP+WebSockets)
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const stream = await node1.dialProtocol(node2.peerId, '/print')
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await pipe(
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[uint8ArrayFromString('node 1 dialed to node 2 successfully')],
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stream
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)
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// node 2 (TCP+WebSockets) dials to node 2 (WebSockets)
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const stream2 = await node2.dialProtocol(node3.peerId, '/print')
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await pipe(
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[uint8ArrayFromString('node 2 dialed to node 3 successfully')],
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stream2
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)
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// node 3 (listening WebSockets) can dial node 1 (TCP)
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try {
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await node3.dialProtocol(node1.peerId, '/print')
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} catch (err) {
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console.log('node 3 failed to dial to node 1 with:', err.message)
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}
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})();
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