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* feat: connectedMultiaddr * feat: all new shiny API that makes everyone happy
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| 'use strict' | ||
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| const ensureMultiaddr = require('./utils').ensureMultiaddr | ||
| const uniqBy = require('lodash.uniqby') | ||
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| // Because JavaScript doesn't let you overload the compare in Set().. | ||
| class MultiaddrSet { | ||
| constructor (multiaddrs) { | ||
| this._multiaddrs = multiaddrs || [] | ||
| this._observedMultiaddrs = [] | ||
| } | ||
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| add (ma) { | ||
| ma = ensureMultiaddr(ma) | ||
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| if (!this.has(ma)) { | ||
| this._multiaddrs.push(ma) | ||
| } | ||
| } | ||
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| // addSafe - prevent multiaddr explosion™ | ||
| // Multiaddr explosion is when you dial to a bunch of nodes and every node | ||
| // gives you a different observed address and you start storing them all to | ||
| // share with other peers. This seems like a good idea until you realize that | ||
| // most of those addresses are unique to the subnet that peer is in and so, | ||
| // they are completely worthless for all the other peers. This method is | ||
| // exclusively used by identify. | ||
| addSafe (ma) { | ||
| ma = ensureMultiaddr(ma) | ||
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| const check = this._observedMultiaddrs.some((m, i) => { | ||
| if (m.equals(ma)) { | ||
| this.add(ma) | ||
| this._observedMultiaddrs.splice(i, 1) | ||
| return true | ||
| } | ||
| }) | ||
| if (!check) { | ||
| this._observedMultiaddrs.push(ma) | ||
| } | ||
| } | ||
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| toArray () { | ||
| return this._multiaddrs.slice() | ||
| } | ||
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| get size () { | ||
| return this._multiaddrs.length | ||
| } | ||
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| forEach (fn) { | ||
| return this._multiaddrs.forEach(fn) | ||
| } | ||
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| has (ma) { | ||
| ma = ensureMultiaddr(ma) | ||
| return this._multiaddrs.some((m) => m.equals(ma)) | ||
| } | ||
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| delete (ma) { | ||
| ma = ensureMultiaddr(ma) | ||
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| this._multiaddrs.some((m, i) => { | ||
| if (m.equals(ma)) { | ||
| this._multiaddrs.splice(i, 1) | ||
| return true | ||
| } | ||
| }) | ||
| } | ||
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| // replaces selected existing multiaddrs with new ones | ||
| replace (existing, fresh) { | ||
| if (!Array.isArray(existing)) { | ||
| existing = [existing] | ||
| } | ||
| if (!Array.isArray(fresh)) { | ||
| fresh = [fresh] | ||
| } | ||
| existing.forEach((m) => this.delete(m)) | ||
| fresh.forEach((m) => this.add(m)) | ||
| } | ||
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| clear () { | ||
| this._multiaddrs = [] | ||
| } | ||
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| // this only really helps make ip6 and ip4 multiaddrs distinct if they are | ||
| // different | ||
| // TODO this is not an ideal solution, probably this code should just be | ||
| // in libp2p-tcp | ||
| distinct () { | ||
| return uniqBy(this._multiaddrs, (ma) => { | ||
| return [ma.toOptions().port, ma.toOptions().transport].join() | ||
| }) | ||
| } | ||
| } | ||
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| module.exports = MultiaddrSet |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,15 @@ | ||
| 'use strict' | ||
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| const multiaddr = require('multiaddr') | ||
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| function ensureMultiaddr (ma) { | ||
| if (multiaddr.isMultiaddr(ma)) { | ||
| return ma | ||
| } | ||
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| return multiaddr(ma) | ||
| } | ||
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| module.exports = { | ||
| ensureMultiaddr: ensureMultiaddr | ||
| } |
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