var expect = require('chai').expect;
var util = require('./util');
var compressor = require('../lib/protocol/compressor');
var HeaderTable = compressor.HeaderTable;
var HuffmanTable = compressor.HuffmanTable;
var HeaderSetCompressor = compressor.HeaderSetCompressor;
var HeaderSetDecompressor = compressor.HeaderSetDecompressor;
var Compressor = compressor.Compressor;
var Decompressor = compressor.Decompressor;
var test_integers = [{
N: 5,
I: 10,
buffer: new Buffer([10])
}, {
N: 0,
I: 10,
buffer: new Buffer([10])
}, {
N: 5,
I: 1337,
buffer: new Buffer([31, 128 + 26, 10])
}, {
N: 0,
I: 1337,
buffer: new Buffer([128 + 57, 10])
}];
var test_strings = [{
string: 'www.foo.com',
buffer: new Buffer('89f1e3c2f29ceb90f4ff', 'hex')
}, {
string: 'éáűőúöüó€',
buffer: new Buffer('13c3a9c3a1c5b1c591c3bac3b6c3bcc3b3e282ac', 'hex')
}];
test_huffman_request = {
'GET': 'c5837f',
'http': '9d29af',
'/': '63',
'www.foo.com': 'f1e3c2f29ceb90f4ff',
'https': '9d29ad1f',
'www.bar.com': 'f1e3c2f18ec5c87a7f',
'no-cache': 'a8eb10649cbf',
'/custom-path.css': '6096a127a56ac699d72211',
'custom-key': '25a849e95ba97d7f',
'custom-value': '25a849e95bb8e8b4bf'
};
test_huffman_response = {
'302': '6402',
'private': 'aec3771a4b',
'Mon, 21 OCt 2013 20:13:21 GMT': 'd07abe941054d5792a0801654102e059b820a98b46ff',
': https://www.bar.com': 'b8a4e94d68b8c31e3c785e31d8b90f4f',
'200': '1001',
'Mon, 21 OCt 2013 20:13:22 GMT': 'd07abe941054d5792a0801654102e059b821298b46ff',
'https://www.bar.com': '9d29ad171863c78f0bc63b1721e9',
'gzip': '9bd9ab',
'foo=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\
AAAAAAAAAAAAAAAAAAAAAAAAAALASDJKHQKBZXOQWEOPIUAXQWEOIUAXLJKHQWOEIUAL\
QWEOIUAXLQEUAXLLKJASDQWEOUIAXN1234LASDJKHQKBZXOQWEOPIUAXQWEOIUAXLJKH\
QWOEIUALQWEOIUAXLQEUAXLLKJASDQWEOUIAXN1234LASDJKHQKBZXOQWEOPIUAXQWEO\
IUAXLJKHQWOEIUALQWEOIUAXLQEUAXLLKJASDQWEOUIAXN1234LASDJKHQKBZXOQWEOP\
IUAXQWEOIUAXLJKHQWOEIUALQWEOIUAXLQEUAXLLKJASDQWEOUIAXN1234ZZZZZZZZZZ\
ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ1234 m\
ax-age=3600; version=1': '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',
'foo=ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ\
ZZZZZZZZZZZZZZZZZZZZZZZZZZLASDJKHQKBZXOQWEOPIUAXQWEOIUAXLJKHQWOEIUAL\
QWEOIUAXLQEUAXLLKJASDQWEOUIAXN1234LASDJKHQKBZXOQWEOPIUAXQWEOIUAXLJKH\
QWOEIUALQWEOIUAXLQEUAXLLKJASDQWEOUIAXN1234LASDJKHQKBZXOQWEOPIUAXQWEO\
IUAXLJKHQWOEIUALQWEOIUAXLQEUAXLLKJASDQWEOUIAXN1234LASDJKHQKBZXOQWEOP\
IUAXQWEOIUAXLJKHQWOEIUALQWEOIUAXLQEUAXLLKJASDQWEOUIAXN1234AAAAAAAAAA\
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA1234 m\
ax-age=3600; version=1': '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'
};
var test_headers = [{
// index
header: {
name: 1,
value: 1,
index: false,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('82', 'hex')
}, {
// index
header: {
name: 5,
value: 5,
index: false,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('86', 'hex')
}, {
// index
header: {
name: 3,
value: 3,
index: false,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('84', 'hex')
}, {
// literal w/index, name index
header: {
name: 0,
value: 'www.foo.com',
index: true,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('41' + '89f1e3c2f29ceb90f4ff', 'hex')
}, {
// indexed
header: {
name: 1,
value: 1,
index: false,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('82', 'hex')
}, {
// indexed
header: {
name: 6,
value: 6,
index: false,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('87', 'hex')
}, {
// indexed
header: {
name: 3,
value: 3,
index: false,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('84', 'hex')
}, {
// literal w/index, name index
header: {
name: 0,
value: 'www.bar.com',
index: true,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('41' + '89f1e3c2f18ec5c87a7f', 'hex')
}, {
// literal w/index, name index
header: {
name: 23,
value: 'no-cache',
index: true,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('58' + '86a8eb10649cbf', 'hex')
}, {
// index
header: {
name: 1,
value: 1,
index: false,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('82', 'hex')
}, {
// index
header: {
name: 6,
value: 6,
index: false,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('87', 'hex')
}, {
// literal w/index, name index
header: {
name: 3,
value: '/custom-path.css',
index: true,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('44' + '8b6096a127a56ac699d72211', 'hex')
}, {
// index
header: {
name: 63,
value: 63,
index: false,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('C0', 'hex')
}, {
// literal w/index, new name & value
header: {
name: 'custom-key',
value: 'custom-value',
index: true,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('40' + '8825a849e95ba97d7f' + '8925a849e95bb8e8b4bf', 'hex')
}, {
// index
header: {
name: 1,
value: 1,
index: false,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('82', 'hex')
}, {
// index
header: {
name: 6,
value: 6,
index: false,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('87', 'hex')
}, {
// index
header: {
name: 62,
value: 62,
index: false,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('BF', 'hex')
}, {
// index
header: {
name: 65,
value: 65,
index: false,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('C2', 'hex')
}, {
// index
header: {
name: 64,
value: 64,
index: false,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('C1', 'hex')
}, {
// index
header: {
name: 61,
value: 61,
index: false,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('BE', 'hex')
}, {
// Literal w/o index, name index
header: {
name: 6,
value: "whatever",
index: false,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('07' + '86f138d25ee5b3', 'hex')
}, {
// Literal w/o index, new name & value
header: {
name: "foo",
value: "bar",
index: false,
mustNeverIndex: false,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('00' + '8294e7' + '03626172', 'hex')
}, {
// Literal never indexed, name index
header: {
name: 6,
value: "whatever",
index: false,
mustNeverIndex: true,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('17' + '86f138d25ee5b3', 'hex')
}, {
// Literal never indexed, new name & value
header: {
name: "foo",
value: "bar",
index: false,
mustNeverIndex: true,
contextUpdate: false,
newMaxSize: 0
},
buffer: new Buffer('10' + '8294e7' + '03626172', 'hex')
}, {
header: {
name: -1,
value: -1,
index: false,
mustNeverIndex: false,
contextUpdate: true,
newMaxSize: 100
},
buffer: new Buffer('3F45', 'hex')
}];
var test_header_sets = [{
headers: {
':method': 'GET',
':scheme': 'http',
':path': '/',
':authority': 'www.foo.com'
},
buffer: util.concat(test_headers.slice(0, 4).map(function(test) { return test.buffer; }))
}, {
headers: {
':method': 'GET',
':scheme': 'https',
':path': '/',
':authority': 'www.bar.com',
'cache-control': 'no-cache'
},
buffer: util.concat(test_headers.slice(4, 9).map(function(test) { return test.buffer; }))
}, {
headers: {
':method': 'GET',
':scheme': 'https',
':path': '/custom-path.css',
':authority': 'www.bar.com',
'custom-key': 'custom-value'
},
buffer: util.concat(test_headers.slice(9, 14).map(function(test) { return test.buffer; }))
}, {
headers: {
':method': 'GET',
':scheme': 'https',
':path': '/custom-path.css',
':authority': ['www.foo.com', 'www.bar.com'],
'custom-key': 'custom-value'
},
buffer: util.concat(test_headers.slice(14, 19).map(function(test) { return test.buffer; }))
}];
describe('compressor.js', function() {
describe('HeaderTable', function() {
});
describe('HuffmanTable', function() {
describe('method encode(buffer)', function() {
it('should return the Huffman encoded version of the input buffer', function() {
var table = HuffmanTable.huffmanTable;
for (var decoded in test_huffman_request) {
var encoded = test_huffman_request[decoded];
expect(table.encode(new Buffer(decoded)).toString('hex')).to.equal(encoded);
}
table = HuffmanTable.huffmanTable;
for (decoded in test_huffman_response) {
encoded = test_huffman_response[decoded];
expect(table.encode(new Buffer(decoded)).toString('hex')).to.equal(encoded);
}
});
});
describe('method decode(buffer)', function() {
it('should return the Huffman decoded version of the input buffer', function() {
var table = HuffmanTable.huffmanTable;
for (var decoded in test_huffman_request) {
var encoded = test_huffman_request[decoded];
expect(table.decode(new Buffer(encoded, 'hex')).toString()).to.equal(decoded);
}
table = HuffmanTable.huffmanTable;
for (decoded in test_huffman_response) {
encoded = test_huffman_response[decoded];
expect(table.decode(new Buffer(encoded, 'hex')).toString()).to.equal(decoded);
}
});
});
});
describe('HeaderSetCompressor', function() {
describe('static method .integer(I, N)', function() {
it('should return an array of buffers that represent the N-prefix coded form of the integer I', function() {
for (var i = 0; i < test_integers.length; i++) {
var test = test_integers[i];
test.buffer.cursor = 0;
expect(util.concat(HeaderSetCompressor.integer(test.I, test.N))).to.deep.equal(test.buffer);
}
});
});
describe('static method .string(string)', function() {
it('should return an array of buffers that represent the encoded form of the string', function() {
var table = HuffmanTable.huffmanTable;
for (var i = 0; i < test_strings.length; i++) {
var test = test_strings[i];
expect(util.concat(HeaderSetCompressor.string(test.string, table))).to.deep.equal(test.buffer);
}
});
});
describe('static method .header({ name, value, index })', function() {
it('should return an array of buffers that represent the encoded form of the header', function() {
var table = HuffmanTable.huffmanTable;
for (var i = 0; i < test_headers.length; i++) {
var test = test_headers[i];
expect(util.concat(HeaderSetCompressor.header(test.header, table))).to.deep.equal(test.buffer);
}
});
});
});
describe('HeaderSetDecompressor', function() {
describe('static method .integer(buffer, N)', function() {
it('should return the parsed N-prefix coded number and increase the cursor property of buffer', function() {
for (var i = 0; i < test_integers.length; i++) {
var test = test_integers[i];
test.buffer.cursor = 0;
expect(HeaderSetDecompressor.integer(test.buffer, test.N)).to.equal(test.I);
expect(test.buffer.cursor).to.equal(test.buffer.length);
}
});
});
describe('static method .string(buffer)', function() {
it('should return the parsed string and increase the cursor property of buffer', function() {
var table = HuffmanTable.huffmanTable;
for (var i = 0; i < test_strings.length; i++) {
var test = test_strings[i];
test.buffer.cursor = 0;
expect(HeaderSetDecompressor.string(test.buffer, table)).to.equal(test.string);
expect(test.buffer.cursor).to.equal(test.buffer.length);
}
});
});
describe('static method .header(buffer)', function() {
it('should return the parsed header and increase the cursor property of buffer', function() {
var table = HuffmanTable.huffmanTable;
for (var i = 0; i < test_headers.length; i++) {
var test = test_headers[i];
test.buffer.cursor = 0;
expect(HeaderSetDecompressor.header(test.buffer, table)).to.deep.equal(test.header);
expect(test.buffer.cursor).to.equal(test.buffer.length);
}
});
});
});
describe('Decompressor', function() {
describe('method decompress(buffer)', function() {
it('should return the parsed header set in { name1: value1, name2: [value2, value3], ... } format', function() {
var decompressor = new Decompressor(util.log, 'REQUEST');
for (var i = 0; i < test_header_sets.length - 1; i++) {
var header_set = test_header_sets[i];
expect(decompressor.decompress(header_set.buffer)).to.deep.equal(header_set.headers);
}
});
});
describe('transform stream', function() {
it('should emit an error event if a series of header frames is interleaved with other frames', function() {
var decompressor = new Decompressor(util.log, 'REQUEST');
var error_occured = false;
decompressor.on('error', function() {
error_occured = true;
});
decompressor.write({
type: 'HEADERS',
flags: {
END_HEADERS: false
},
data: new Buffer(5)
});
decompressor.write({
type: 'DATA',
flags: {},
data: new Buffer(5)
});
expect(error_occured).to.be.equal(true);
});
});
});
describe('invariant', function() {
describe('decompressor.decompress(compressor.compress(headerset)) === headerset', function() {
it('should be true for any header set if the states are synchronized', function() {
var compressor = new Compressor(util.log, 'REQUEST');
var decompressor = new Decompressor(util.log, 'REQUEST');
var n = test_header_sets.length;
for (var i = 0; i < 10; i++) {
var headers = test_header_sets[i%n].headers;
var compressed = compressor.compress(headers);
var decompressed = decompressor.decompress(compressed);
expect(decompressed).to.deep.equal(headers);
expect(compressor._table).to.deep.equal(decompressor._table);
}
});
});
describe('source.pipe(compressor).pipe(decompressor).pipe(destination)', function() {
it('should behave like source.pipe(destination) for a stream of frames', function(done) {
var compressor = new Compressor(util.log, 'RESPONSE');
var decompressor = new Decompressor(util.log, 'RESPONSE');
var n = test_header_sets.length;
compressor.pipe(decompressor);
for (var i = 0; i < 10; i++) {
compressor.write({
type: i%2 ? 'HEADERS' : 'PUSH_PROMISE',
flags: {},
headers: test_header_sets[i%n].headers
});
}
setTimeout(function() {
for (var j = 0; j < 10; j++) {
expect(decompressor.read().headers).to.deep.equal(test_header_sets[j%n].headers);
}
done();
}, 10);
});
});
describe('huffmanTable.decompress(huffmanTable.compress(buffer)) === buffer', function() {
it('should be true for any buffer', function() {
for (var i = 0; i < 10; i++) {
var buffer = [];
while (Math.random() > 0.1) {
buffer.push(Math.floor(Math.random() * 256))
}
buffer = new Buffer(buffer);
var table = HuffmanTable.huffmanTable;
var result = table.decode(table.encode(buffer));
expect(result).to.deep.equal(buffer);
}
});
});
});
});