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implement maxConns that prevents too many connections

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This commit is contained in:
Kevin Jahns 2020-01-27 19:06:46 +01:00
parent 7da32c37d2
commit c82a587e28
3 changed files with 181 additions and 245 deletions
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package-lock.json generated
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"require-main-filename": { "require-main-filename": {
"version": "1.0.1", "version": "2.0.0",
"resolved": "https://registry.npmjs.org/require-main-filename/-/require-main-filename-1.0.1.tgz", "resolved": "https://registry.npmjs.org/require-main-filename/-/require-main-filename-2.0.0.tgz",
"integrity": "sha1-l/cXtp1IeE9fUmpsWqj/3aBVpNE=", "integrity": "sha512-NKN5kMDylKuldxYLSUfrbo5Tuzh4hd+2E8NPPX02mZtn1VuREQToYe/ZdlJy+J3uCpfaiGF05e7B8W0iXbQHmg==",
"dev": true "dev": true
}, },
"require-uncached": { "require-uncached": {
@ -1993,9 +1879,9 @@
} }
}, },
"rollup": { "rollup": {
"version": "1.29.0", "version": "1.30.1",
"resolved": "https://registry.npmjs.org/rollup/-/rollup-1.29.0.tgz", "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.30.1.tgz",
"integrity": "sha512-V63Iz0dSdI5qPPN5HmCN6OBRzBFhMqNWcvwgq863JtSCTU6Vdvqq6S2fYle/dSCyoPrBkIP3EIr1RVs3HTRqqg==", "integrity": "sha512-Uus8mwQXwaO+ZVoNwBcXKhT0AvycFCBW/W8VZtkpVGsotRllWk9oldfCjqWmTnFRI0y7x6BnEqSqc65N+/YdBw==",
"dev": true, "dev": true,
"requires": { "requires": {
"@types/estree": "*", "@types/estree": "*",
@ -2294,12 +2180,6 @@
"integrity": "sha1-IzTBjpx1n3vdVv3vfprj1YjmjtM=", "integrity": "sha1-IzTBjpx1n3vdVv3vfprj1YjmjtM=",
"dev": true "dev": true
}, },
"strip-eof": {
"version": "1.0.0",
"resolved": "https://registry.npmjs.org/strip-eof/-/strip-eof-1.0.0.tgz",
"integrity": "sha1-u0P/VZim6wXYm1n80SnJgzE2Br8=",
"dev": true
},
"strip-json-comments": { "strip-json-comments": {
"version": "2.0.1", "version": "2.0.1",
"resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-2.0.1.tgz", "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-2.0.1.tgz",
@ -2386,9 +2266,9 @@
} }
}, },
"typescript": { "typescript": {
"version": "3.7.3", "version": "3.7.5",
"resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.3.tgz", "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.5.tgz",
"integrity": "sha512-Mcr/Qk7hXqFBXMN7p7Lusj1ktCBydylfQM/FZCk5glCNQJrCUKPkMHdo9R0MTFWsC/4kPFvDS0fDPvukfCkFsw==", "integrity": "sha512-/P5lkRXkWHNAbcJIiHPfRoKqyd7bsyCma1hZNUGfn20qm64T6ZBlrzprymeu918H+mB/0rIg2gGK/BXkhhYgBw==",
"dev": true "dev": true
}, },
"union": { "union": {
@ -2458,42 +2338,49 @@
"dev": true "dev": true
}, },
"wrap-ansi": { "wrap-ansi": {
"version": "2.1.0", "version": "5.1.0",
"resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz", "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-5.1.0.tgz",
"integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=", "integrity": "sha512-QC1/iN/2/RPVJ5jYK8BGttj5z83LmSKmvbvrXPNCLZSEb32KKVDJDl/MOt2N01qU2H/FkzEa9PKto1BqDjtd7Q==",
"dev": true, "dev": true,
"requires": { "requires": {
"string-width": "^1.0.1", "ansi-styles": "^3.2.0",
"strip-ansi": "^3.0.1" "string-width": "^3.0.0",
"strip-ansi": "^5.0.0"
}, },
"dependencies": { "dependencies": {
"is-fullwidth-code-point": { "ansi-regex": {
"version": "1.0.0", "version": "4.1.0",
"resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz", "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
"integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=", "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==",
"dev": true
},
"ansi-styles": {
"version": "3.2.1",
"resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
"integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
"dev": true, "dev": true,
"requires": { "requires": {
"number-is-nan": "^1.0.0" "color-convert": "^1.9.0"
} }
}, },
"string-width": { "string-width": {
"version": "1.0.2", "version": "3.1.0",
"resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz", "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
"integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=", "integrity": "sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==",
"dev": true, "dev": true,
"requires": { "requires": {
"code-point-at": "^1.0.0", "emoji-regex": "^7.0.1",
"is-fullwidth-code-point": "^1.0.0", "is-fullwidth-code-point": "^2.0.0",
"strip-ansi": "^3.0.0" "strip-ansi": "^5.1.0"
} }
}, },
"strip-ansi": { "strip-ansi": {
"version": "3.0.1", "version": "5.2.0",
"resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz", "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
"integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=", "integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
"dev": true, "dev": true,
"requires": { "requires": {
"ansi-regex": "^2.0.0" "ansi-regex": "^4.1.0"
} }
} }
} }
@ -2543,25 +2430,29 @@
"dev": true "dev": true
}, },
"yargs": { "yargs": {
"version": "12.0.5", "version": "13.3.0",
"resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.5.tgz", "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.3.0.tgz",
"integrity": "sha512-Lhz8TLaYnxq/2ObqHDql8dX8CJi97oHxrjUcYtzKbbykPtVW9WB+poxI+NM2UIzsMgNCZTIf0AQwsjK5yMAqZw==", "integrity": "sha512-2eehun/8ALW8TLoIl7MVaRUrg+yCnenu8B4kBlRxj3GJGDKU1Og7sMXPNm1BYyM1DOJmTZ4YeN/Nwxv+8XJsUA==",
"dev": true, "dev": true,
"requires": { "requires": {
"cliui": "^4.0.0", "cliui": "^5.0.0",
"decamelize": "^1.2.0",
"find-up": "^3.0.0", "find-up": "^3.0.0",
"get-caller-file": "^1.0.1", "get-caller-file": "^2.0.1",
"os-locale": "^3.0.0",
"require-directory": "^2.1.1", "require-directory": "^2.1.1",
"require-main-filename": "^1.0.1", "require-main-filename": "^2.0.0",
"set-blocking": "^2.0.0", "set-blocking": "^2.0.0",
"string-width": "^2.0.0", "string-width": "^3.0.0",
"which-module": "^2.0.0", "which-module": "^2.0.0",
"y18n": "^3.2.1 || ^4.0.0", "y18n": "^4.0.0",
"yargs-parser": "^11.1.1" "yargs-parser": "^13.1.1"
}, },
"dependencies": { "dependencies": {
"ansi-regex": {
"version": "4.1.0",
"resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
"integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==",
"dev": true
},
"find-up": { "find-up": {
"version": "3.0.0", "version": "3.0.0",
"resolved": "https://registry.npmjs.org/find-up/-/find-up-3.0.0.tgz", "resolved": "https://registry.npmjs.org/find-up/-/find-up-3.0.0.tgz",
@ -2582,9 +2473,9 @@
} }
}, },
"p-limit": { "p-limit": {
"version": "2.2.1", "version": "2.2.2",
"resolved": "https://registry.npmjs.org/p-limit/-/p-limit-2.2.1.tgz", "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-2.2.2.tgz",
"integrity": "sha512-85Tk+90UCVWvbDavCLKPOLC9vvY8OwEX/RtKF+/1OADJMVlFfEHOiMTPVyxg7mk/dKa+ipdHm0OUkTvCpMTuwg==", "integrity": "sha512-WGR+xHecKTr7EbUEhyLSh5Dube9JtdiG78ufaeLxTgpudf/20KqyMioIUZJAezlTIi6evxuoUs9YXc11cU+yzQ==",
"dev": true, "dev": true,
"requires": { "requires": {
"p-try": "^2.0.0" "p-try": "^2.0.0"
@ -2604,13 +2495,33 @@
"resolved": "https://registry.npmjs.org/p-try/-/p-try-2.2.0.tgz", "resolved": "https://registry.npmjs.org/p-try/-/p-try-2.2.0.tgz",
"integrity": "sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==", "integrity": "sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==",
"dev": true "dev": true
},
"string-width": {
"version": "3.1.0",
"resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
"integrity": "sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==",
"dev": true,
"requires": {
"emoji-regex": "^7.0.1",
"is-fullwidth-code-point": "^2.0.0",
"strip-ansi": "^5.1.0"
}
},
"strip-ansi": {
"version": "5.2.0",
"resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
"integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
"dev": true,
"requires": {
"ansi-regex": "^4.1.0"
}
} }
} }
}, },
"yargs-parser": { "yargs-parser": {
"version": "11.1.1", "version": "13.1.1",
"resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-11.1.1.tgz", "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.1.tgz",
"integrity": "sha512-C6kB/WJDiaxONLJQnF8ccx9SEeoTTLek8RVbaOIsrAUS8VrBEXfmeSnCZxygc+XC2sNMBIwOOnfcxiynjHsVSQ==", "integrity": "sha512-oVAVsHz6uFrg3XQheFII8ESO2ssAf9luWuAd6Wexsu4F3OtIW0o8IribPXYrD4WC24LWtPrJlGy87y5udK+dxQ==",
"dev": true, "dev": true,
"requires": { "requires": {
"camelcase": "^5.0.0", "camelcase": "^5.0.0",
@ -2618,12 +2529,29 @@
} }
}, },
"yjs": { "yjs": {
"version": "13.0.0-105", "version": "13.0.1",
"resolved": "https://registry.npmjs.org/yjs/-/yjs-13.0.0-105.tgz", "resolved": "https://registry.npmjs.org/yjs/-/yjs-13.0.1.tgz",
"integrity": "sha512-nsTm0LVMsOVKpRYXrJHqu9g+ISphBoEnqropblkTUFBbv0TyYVbq11CqN846ip0RC9Nq1Kh8kZ+QHUL1CHnuyA==", "integrity": "sha512-j6M241DhLC0HfGub1gtqpnhe1gzSJJiusKaRB1yO0/I92F9C65sIDY4AD/8bY8jiKXiJGfNv8iQ7PUv+tXWTpg==",
"dev": true, "dev": true,
"requires": { "requires": {
"lib0": "^0.2.2" "lib0": "^0.2.7"
},
"dependencies": {
"isomorphic.js": {
"version": "0.1.3",
"resolved": "https://registry.npmjs.org/isomorphic.js/-/isomorphic.js-0.1.3.tgz",
"integrity": "sha512-pabBRLDwYefSsNS+qCazJ97o7P5xDTrNoxSYFTM09JlZTxPrOEPGKekwqUy3/Np4C4PHnVUXHYsZPOix0jELsA==",
"dev": true
},
"lib0": {
"version": "0.2.12",
"resolved": "https://registry.npmjs.org/lib0/-/lib0-0.2.12.tgz",
"integrity": "sha512-ileLyIMsWqcpyFLP6WMIgD6C7rkwrdYjH6CCFvAnqOhnGcyAl8LmLkiryVNmKW0sLRw/gLcB47LGXJDw0tDlkg==",
"dev": true,
"requires": {
"isomorphic.js": "^0.1.1"
}
}
} }
} }
} }

12
package.json
View file

@ -42,24 +42,24 @@
] ]
}, },
"dependencies": { "dependencies": {
"lib0": "^0.2.3", "lib0": "^0.2.12",
"simple-peer": "^9.6.2", "simple-peer": "^9.6.2",
"y-protocols": "^0.2.0" "y-protocols": "^0.2.0"
}, },
"devDependencies": { "devDependencies": {
"@rollup/plugin-commonjs": "^11.0.1", "@rollup/plugin-commonjs": "^11.0.1",
"@rollup/plugin-node-resolve": "^7.0.0", "@rollup/plugin-node-resolve": "^7.0.0",
"concurrently": "^5.0.0", "concurrently": "^5.1.0",
"http-server": "^0.12.1", "http-server": "^0.12.1",
"rollup": "^1.29.0", "rollup": "^1.30.1",
"rollup-cli": "^1.0.9", "rollup-cli": "^1.0.9",
"rollup-plugin-terser": "^5.2.0", "rollup-plugin-terser": "^5.2.0",
"standard": "^12.0.1", "standard": "^12.0.1",
"typescript": "^3.7.3", "typescript": "^3.7.5",
"yjs": "^13.0.0-105" "yjs": "^13.0.0"
}, },
"peerDependenies": { "peerDependenies": {
"yjs": ">=13.0.0-103" "yjs": "^13.0.0"
}, },
"optionalDependencies": { "optionalDependencies": {
"ws": "^7.2.0" "ws": "^7.2.0"

16
src/y-webrtc.js
View file

@ -9,6 +9,7 @@ import * as logging from 'lib0/logging.js'
import * as promise from 'lib0/promise.js' import * as promise from 'lib0/promise.js'
import * as bc from 'lib0/broadcastchannel.js' import * as bc from 'lib0/broadcastchannel.js'
import * as buffer from 'lib0/buffer.js' import * as buffer from 'lib0/buffer.js'
import * as math from 'lib0/math.js'
import { createMutex } from 'lib0/mutex.js' import { createMutex } from 'lib0/mutex.js'
import * as Y from 'yjs' // eslint-disable-line import * as Y from 'yjs' // eslint-disable-line
@ -262,7 +263,9 @@ const announceSignalingInfo = room => {
// only subcribe if connection is established, otherwise the conn automatically subscribes to all rooms // only subcribe if connection is established, otherwise the conn automatically subscribes to all rooms
if (conn.connected) { if (conn.connected) {
conn.send({ type: 'subscribe', topics: [room.name] }) conn.send({ type: 'subscribe', topics: [room.name] })
publishSignalingMessage(conn, room, { type: 'announce', from: room.peerId }) if (room.webrtcConns.size < room.provider.maxConns) {
publishSignalingMessage(conn, room, { type: 'announce', from: room.peerId })
}
} }
}) })
} }
@ -483,8 +486,10 @@ export class SignalingConn extends ws.WebsocketClient {
}]) }])
switch (data.type) { switch (data.type) {
case 'announce': case 'announce':
map.setIfUndefined(webrtcConns, data.from, () => new WebrtcConn(this, true, data.from, room)) if (webrtcConns.size < room.provider.maxConns) {
emitPeerChange() map.setIfUndefined(webrtcConns, data.from, () => new WebrtcConn(this, true, data.from, room))
emitPeerChange()
}
break break
case 'signal': case 'signal':
if (data.to === peerId) { if (data.to === peerId) {
@ -519,6 +524,7 @@ export class WebrtcProvider extends Observable {
* @param {Array<string>} [opts.signaling] * @param {Array<string>} [opts.signaling]
* @param {string?} [opts.password] * @param {string?} [opts.password]
* @param {awarenessProtocol.Awareness} [opts.awareness] * @param {awarenessProtocol.Awareness} [opts.awareness]
* @param {number} [opts.maxConns]
*/ */
constructor ( constructor (
roomName, roomName,
@ -526,7 +532,8 @@ export class WebrtcProvider extends Observable {
{ {
signaling = ['wss://signaling.yjs.dev', 'wss://y-webrtc-uchplqjsol.now.sh', 'wss://y-webrtc-signaling-eu.herokuapp.com', 'wss://y-webrtc-signaling-us.herokuapp.com'], signaling = ['wss://signaling.yjs.dev', 'wss://y-webrtc-uchplqjsol.now.sh', 'wss://y-webrtc-signaling-eu.herokuapp.com', 'wss://y-webrtc-signaling-us.herokuapp.com'],
password = null, password = null,
awareness = new awarenessProtocol.Awareness(doc) awareness = new awarenessProtocol.Awareness(doc),
maxConns = 20 + math.floor(random.rand() * 15) // just to prevent that exactly n clients form a cluster
} = {} } = {}
) { ) {
super() super()
@ -539,6 +546,7 @@ export class WebrtcProvider extends Observable {
this.shouldConnect = false this.shouldConnect = false
this.signalingUrls = signaling this.signalingUrls = signaling
this.signalingConns = [] this.signalingConns = []
this.maxConns = maxConns
/** /**
* @type {PromiseLike<CryptoKey | null>} * @type {PromiseLike<CryptoKey | null>}
*/ */