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| 1 | +// Flags: --js-immutable-arraybuffer |
| 2 | +'use strict'; |
| 3 | + |
| 4 | +const common = require('../common'); |
| 5 | +const assert = require('assert'); |
| 6 | +const net = require('net'); |
| 7 | +const { once } = require('events'); |
| 8 | +const { test } = require('node:test'); |
| 9 | + |
| 10 | +if (typeof ArrayBuffer.prototype.transferToImmutable !== 'function') |
| 11 | + common.skip('ArrayBuffer.prototype.transferToImmutable is not available'); |
| 12 | + |
| 13 | +const message = Buffer.from('test'); |
| 14 | + |
| 15 | +async function createServer(t) { |
| 16 | + const connections = []; |
| 17 | + const server = net.createServer((socket) => { |
| 18 | + connections.push(socket); |
| 19 | + // Rejecting a replacement buffer may close the client with unread data. |
| 20 | + socket.on('error', (err) => { |
| 21 | + if (err.code !== 'ECONNRESET') throw err; |
| 22 | + }); |
| 23 | + socket.end(message); |
| 24 | + }); |
| 25 | + t.after(async () => { |
| 26 | + for (const socket of connections) socket.destroy(); |
| 27 | + await new Promise((resolve) => server.close(resolve)); |
| 28 | + }); |
| 29 | + server.listen(0, '127.0.0.1'); |
| 30 | + await once(server, 'listening'); |
| 31 | + return server.address().port; |
| 32 | +} |
| 33 | + |
| 34 | +for (const View of [Buffer, Uint8Array]) { |
| 35 | + for (const offset of [0, 1]) { |
| 36 | + for (const mode of ['direct', 'first', 'replacement']) { |
| 37 | + test(`${View.name}, offset ${offset}, ${mode} immutable buffer`, { |
| 38 | + timeout: common.platformTimeout(5000), |
| 39 | + }, async (t) => { |
| 40 | + const original = [0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff]; |
| 41 | + const backing = Uint8Array.from(original).buffer.transferToImmutable(); |
| 42 | + const target = View === Buffer ? |
| 43 | + Buffer.from(backing, offset, 4) : new Uint8Array(backing, offset, 4); |
| 44 | + const mutable = new Uint8Array(1); |
| 45 | + let generated = 0; |
| 46 | + const factory = () => { |
| 47 | + generated++; |
| 48 | + return mode === 'replacement' && generated === 1 ? mutable : target; |
| 49 | + }; |
| 50 | + const reads = []; |
| 51 | + const errors = []; |
| 52 | + const socket = new net.Socket({ |
| 53 | + onread: { |
| 54 | + buffer: mode === 'direct' ? target : factory, |
| 55 | + callback(nread, buffer) { |
| 56 | + reads.push({ buffer, bytes: [...buffer.subarray(0, nread)] }); |
| 57 | + }, |
| 58 | + }, |
| 59 | + }); |
| 60 | + t.after(() => socket.destroy()); |
| 61 | + socket.on('error', (err) => errors.push(err)); |
| 62 | + socket.on('close', common.mustCall()); |
| 63 | + socket.on('data', common.mustNotCall()); |
| 64 | + const closed = new Promise((resolve) => socket.once('close', resolve)); |
| 65 | + const port = await createServer(t); |
| 66 | + socket.connect(port, '127.0.0.1'); |
| 67 | + await closed; |
| 68 | + |
| 69 | + assert.strictEqual(errors.length, 1); |
| 70 | + assert.strictEqual(errors[0].name, 'TypeError'); |
| 71 | + assert.strictEqual(errors[0].code, 'ERR_INVALID_ARG_VALUE'); |
| 72 | + assert.match(errors[0].message, /onread\.buffer.*immutable ArrayBuffer/); |
| 73 | + assert.strictEqual(socket.connecting, false); |
| 74 | + assert.strictEqual(backing.immutable, true); |
| 75 | + assert.deepStrictEqual([...new Uint8Array(backing)], original); |
| 76 | + if (mode === 'replacement') { |
| 77 | + assert.strictEqual(generated, 2); |
| 78 | + assert.strictEqual(reads.length, 1); |
| 79 | + assert.strictEqual(reads[0].buffer, mutable); |
| 80 | + assert.deepStrictEqual(reads[0].bytes, [...message.subarray(0, 1)]); |
| 81 | + } else { |
| 82 | + assert.strictEqual(generated, mode === 'first' ? 1 : 0); |
| 83 | + assert.deepStrictEqual(reads, []); |
| 84 | + } |
| 85 | + }); |
| 86 | + } |
| 87 | + } |
| 88 | +} |
| 89 | + |
| 90 | +for (const kind of ['bound', 'retry']) { |
| 91 | + test(`reject an immutable buffer during ${kind} initialization`, { |
| 92 | + timeout: common.platformTimeout(5000), |
| 93 | + }, async (t) => { |
| 94 | + const port = await createServer(t); |
| 95 | + const backing = new ArrayBuffer(4).transferToImmutable(); |
| 96 | + const target = new Uint8Array(backing); |
| 97 | + let generated = 0; |
| 98 | + const options = { |
| 99 | + host: '127.0.0.1', |
| 100 | + port, |
| 101 | + onread: { |
| 102 | + buffer: target, |
| 103 | + callback: common.mustNotCall(), |
| 104 | + }, |
| 105 | + }; |
| 106 | + let socket; |
| 107 | + if (kind === 'bound') { |
| 108 | + options.handle = new net.BoundSocket({ host: '127.0.0.1' }); |
| 109 | + socket = net.connect(options); |
| 110 | + } else { |
| 111 | + options.host = 'localhost'; |
| 112 | + options.autoSelectFamily = true; |
| 113 | + options.autoSelectFamilyAttemptTimeout = common.platformTimeout(10); |
| 114 | + options.lookup = (host, opts, callback) => callback(null, [ |
| 115 | + { address: '127.0.0.2', family: 4 }, |
| 116 | + { address: '127.0.0.1', family: 4 }, |
| 117 | + ]); |
| 118 | + options.onread.buffer = () => (++generated === 1 ? new Uint8Array(4) : target); |
| 119 | + socket = net.connect(options).unref(); |
| 120 | + } |
| 121 | + t.after(() => socket.destroy()); |
| 122 | + socket.on('close', common.mustCall()); |
| 123 | + socket.on('error', common.expectsError({ |
| 124 | + name: 'TypeError', |
| 125 | + code: 'ERR_INVALID_ARG_VALUE', |
| 126 | + })); |
| 127 | + await new Promise((resolve) => socket.once('close', resolve)); |
| 128 | + assert.deepStrictEqual([...target], [0, 0, 0, 0]); |
| 129 | + if (kind === 'retry') assert.strictEqual(generated, 2); |
| 130 | + }); |
| 131 | +} |
| 132 | + |
| 133 | +for (const shared of [false, true]) { |
| 134 | + test(`mutable ${shared ? 'shared' : 'on-heap'} replacement buffers`, { |
| 135 | + timeout: common.platformTimeout(5000), |
| 136 | + }, async (t) => { |
| 137 | + const chunks = []; |
| 138 | + const socket = new net.Socket({ |
| 139 | + onread: { |
| 140 | + buffer: () => (shared ? |
| 141 | + new Uint8Array(new SharedArrayBuffer(1)) : new Uint8Array(1)), |
| 142 | + callback(nread, buffer) { |
| 143 | + chunks.push(Buffer.from(buffer.subarray(0, nread))); |
| 144 | + }, |
| 145 | + }, |
| 146 | + }); |
| 147 | + t.after(() => socket.destroy()); |
| 148 | + socket.on('error', common.mustNotCall()); |
| 149 | + const closed = new Promise((resolve) => socket.once('close', resolve)); |
| 150 | + const port = await createServer(t); |
| 151 | + socket.connect(port, '127.0.0.1'); |
| 152 | + await closed; |
| 153 | + assert.deepStrictEqual(Buffer.concat(chunks), message); |
| 154 | + }); |
| 155 | +} |
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