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| 1 | +'use strict'; |
| 2 | + |
| 3 | +const assert = require('assert'); |
| 4 | +const common = require('../common'); |
| 5 | +const http = require('http'); |
| 6 | +const net = require('net'); |
| 7 | +const MAX = 8 * 1024; // 8KB |
| 8 | + |
| 9 | +// Verify that we cannot receive more than 8KB of headers. |
| 10 | + |
| 11 | +function once(cb) { |
| 12 | + let called = false; |
| 13 | + return () => { |
| 14 | + if (!called) { |
| 15 | + called = true; |
| 16 | + cb(); |
| 17 | + } |
| 18 | + }; |
| 19 | +} |
| 20 | + |
| 21 | +function finished(client, callback) { |
| 22 | + 'abort error end'.split(' ').forEach((e) => { |
| 23 | + client.on(e, once(() => setImmediate(callback))); |
| 24 | + }); |
| 25 | +} |
| 26 | + |
| 27 | +function fillHeaders(headers, currentSize, valid = false) { |
| 28 | + headers += 'a'.repeat(MAX - headers.length - 3); |
| 29 | + // Generate valid headers |
| 30 | + if (valid) { |
| 31 | + // TODO(mcollina): understand why -9 is needed instead of -1 |
| 32 | + headers = headers.slice(0, -9); |
| 33 | + } |
| 34 | + return headers + '\r\n\r\n'; |
| 35 | +} |
| 36 | + |
| 37 | +const timeout = common.platformTimeout(10); |
| 38 | + |
| 39 | +function writeHeaders(socket, headers) { |
| 40 | + const array = []; |
| 41 | + |
| 42 | + // this is off from 1024 so that \r\n does not get split |
| 43 | + const chunkSize = 1000; |
| 44 | + let last = 0; |
| 45 | + |
| 46 | + for (let i = 0; i < headers.length / chunkSize; i++) { |
| 47 | + const current = (i + 1) * chunkSize; |
| 48 | + array.push(headers.slice(last, current)); |
| 49 | + last = current; |
| 50 | + } |
| 51 | + |
| 52 | + // safety check we are chunking correctly |
| 53 | + assert.strictEqual(array.join(''), headers); |
| 54 | + |
| 55 | + next(); |
| 56 | + |
| 57 | + function next() { |
| 58 | + if (socket.write(array.shift())) { |
| 59 | + if (array.length === 0) { |
| 60 | + socket.end(); |
| 61 | + } else { |
| 62 | + setTimeout(next, timeout); |
| 63 | + } |
| 64 | + } else { |
| 65 | + socket.once('drain', next); |
| 66 | + } |
| 67 | + } |
| 68 | +} |
| 69 | + |
| 70 | +function test1() { |
| 71 | + let headers = |
| 72 | + 'HTTP/1.1 200 OK\r\n' + |
| 73 | + 'Content-Length: 0\r\n' + |
| 74 | + 'X-CRASH: '; |
| 75 | + |
| 76 | + // OK, Content-Length, 0, X-CRASH, aaa... |
| 77 | + const currentSize = 2 + 14 + 1 + 7; |
| 78 | + headers = fillHeaders(headers, currentSize); |
| 79 | + |
| 80 | + const server = net.createServer((sock) => { |
| 81 | + sock.once('data', (chunk) => { |
| 82 | + writeHeaders(sock, headers); |
| 83 | + sock.resume(); |
| 84 | + }); |
| 85 | + }); |
| 86 | + |
| 87 | + server.listen(0, common.mustCall(() => { |
| 88 | + const port = server.address().port; |
| 89 | + const client = http.get({ port: port }, common.mustNotCall(() => {})); |
| 90 | + |
| 91 | + client.on('error', common.mustCall((err) => { |
| 92 | + assert.strictEqual(err.code, 'HPE_HEADER_OVERFLOW'); |
| 93 | + server.close(); |
| 94 | + setImmediate(test2); |
| 95 | + })); |
| 96 | + })); |
| 97 | +} |
| 98 | + |
| 99 | +const test2 = common.mustCall(() => { |
| 100 | + let headers = |
| 101 | + 'GET / HTTP/1.1\r\n' + |
| 102 | + 'Host: localhost\r\n' + |
| 103 | + 'Agent: node\r\n' + |
| 104 | + 'X-CRASH: '; |
| 105 | + |
| 106 | + // /, Host, localhost, Agent, node, X-CRASH, a... |
| 107 | + const currentSize = 1 + 4 + 9 + 5 + 4 + 7; |
| 108 | + headers = fillHeaders(headers, currentSize); |
| 109 | + |
| 110 | + const server = http.createServer(common.mustNotCall()); |
| 111 | + |
| 112 | + server.on('clientError', common.mustCall((err) => { |
| 113 | + assert.strictEqual(err.code, 'HPE_HEADER_OVERFLOW'); |
| 114 | + })); |
| 115 | + |
| 116 | + server.listen(0, common.mustCall(() => { |
| 117 | + const client = net.connect(server.address().port); |
| 118 | + client.on('connect', () => { |
| 119 | + writeHeaders(client, headers); |
| 120 | + client.resume(); |
| 121 | + }); |
| 122 | + |
| 123 | + finished(client, common.mustCall((err) => { |
| 124 | + server.close(); |
| 125 | + setImmediate(test3); |
| 126 | + })); |
| 127 | + })); |
| 128 | +}); |
| 129 | + |
| 130 | +const test3 = common.mustCall(() => { |
| 131 | + let headers = |
| 132 | + 'GET / HTTP/1.1\r\n' + |
| 133 | + 'Host: localhost\r\n' + |
| 134 | + 'Agent: node\r\n' + |
| 135 | + 'X-CRASH: '; |
| 136 | + |
| 137 | + // /, Host, localhost, Agent, node, X-CRASH, a... |
| 138 | + const currentSize = 1 + 4 + 9 + 5 + 4 + 7; |
| 139 | + headers = fillHeaders(headers, currentSize, true); |
| 140 | + |
| 141 | + const server = http.createServer(common.mustCall((req, res) => { |
| 142 | + res.end('hello world'); |
| 143 | + setImmediate(server.close.bind(server)); |
| 144 | + })); |
| 145 | + |
| 146 | + server.listen(0, common.mustCall(() => { |
| 147 | + const client = net.connect(server.address().port); |
| 148 | + client.on('connect', () => { |
| 149 | + writeHeaders(client, headers); |
| 150 | + client.resume(); |
| 151 | + }); |
| 152 | + })); |
| 153 | +}); |
| 154 | + |
| 155 | +test1(); |
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