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Converted all classes to es6. #1

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39f3acb
Converted all classes to es6.
nleclerc Feb 13, 2024
2aaa361
Fixed calls to parent methods.
nleclerc Feb 13, 2024
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41 changes: 22 additions & 19 deletions src/AbstractMessage.js
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Original file line number Diff line number Diff line change
@@ -1,27 +1,30 @@
/* eslint-disable no-restricted-syntax */
// A Protocol message interface
function AbstractMessage() {}
class AbstractMessage {
constructor() {
this.isMessage = true;
this.isValid = true;
this.buffer = Buffer.alloc(0);
}

AbstractMessage.prototype.mixin = function copyFrom(data) {
for (const k in data) {
// eslint-disable-next-line no-prototype-builtins
if (data.hasOwnProperty(k)) {
this[k] = data[k];
mixin(data) {
for (const k in data) {
// eslint-disable-next-line no-prototype-builtins
if (data.hasOwnProperty(k)) {
this[k] = data[k];
}
}
return this;
}
}
return this;
};

AbstractMessage.prototype.parseBuffer = function parseBuffer(buffer) {
this.buffer = buffer;
return this;
};
parseBuffer(buffer) {
this.buffer = buffer;
return this;
}

AbstractMessage.prototype.generateBuffer = function generateBuffer() {
return this;
};
AbstractMessage.prototype.isMessage = true;
AbstractMessage.prototype.isValid = true;
AbstractMessage.prototype.buffer = Buffer.alloc(0);
generateBuffer() {
return this;
}
}

module.exports = AbstractMessage;
181 changes: 89 additions & 92 deletions src/ControlMessage.js
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Original file line number Diff line number Diff line change
@@ -1,6 +1,4 @@
/* eslint-disable no-bitwise */
const util = require('util');

const AbstractMessage = require('./AbstractMessage');

const byteToCommand = {
Expand Down Expand Up @@ -30,102 +28,101 @@ const flags = {
start: 0xFFFF,
};

function ControlMessage() {
AbstractMessage.apply(this);
}
class ControlMessage extends AbstractMessage {
constructor() {
super()
this.name = '';
this.isValid = true;
this.start = flags.start;
this.version = 2;
}

util.inherits(ControlMessage, AbstractMessage);
parseBuffer(buffer, ...args) {
super.parseBuffer(...args);
this.start = buffer.readUInt16BE(0);
if (this.start !== flags.start) {
this.isValid = false;
return this;
}
this.command = byteToCommand[buffer.readUInt16BE(2)];

ControlMessage.prototype.name = '';
ControlMessage.prototype.isValid = true;
ControlMessage.prototype.start = flags.start;
ControlMessage.prototype.version = 2;
switch (this.command) {
case 'invitation':
case 'invitation_accepted':
case 'invitation_rejected':
case 'end':
this.version = buffer.readUInt32BE(4);
this.token = buffer.readUInt32BE(8);
this.ssrc = buffer.readUInt32BE(12);
this.name = buffer.toString('utf-8', 16);
break;
case 'synchronization':
this.ssrc = buffer.readUInt32BE(4, 8);
this.count = buffer.readUInt8(8);
// eslint-disable-next-line no-bitwise
this.padding = (buffer.readUInt8(9) << 0xF0) + buffer.readUInt16BE(10);
this.timestamp1 = buffer.slice(12, 20);
this.timestamp2 = buffer.slice(20, 28);
this.timestamp3 = buffer.slice(28, 36);
break;
case 'receiver_feedback':
this.ssrc = buffer.readUInt32BE(4, 8);
this.sequenceNumber = buffer.readUInt16BE(8);
break;
default:
break;
}
return this;
}

ControlMessage.prototype.parseBuffer = function parseBuffer(buffer, ...args) {
AbstractMessage.prototype.parseBuffer.apply(this, args);
this.start = buffer.readUInt16BE(0);
if (this.start !== flags.start) {
this.isValid = false;
return this;
}
this.command = byteToCommand[buffer.readUInt16BE(2)];
generateBuffer() {
let buffer;
const commandByte = commandToByte[this.command];

switch (this.command) {
case 'invitation':
case 'invitation_accepted':
case 'invitation_rejected':
case 'end':
this.version = buffer.readUInt32BE(4);
this.token = buffer.readUInt32BE(8);
this.ssrc = buffer.readUInt32BE(12);
this.name = buffer.toString('utf-8', 16);
break;
case 'synchronization':
this.ssrc = buffer.readUInt32BE(4, 8);
this.count = buffer.readUInt8(8);
// eslint-disable-next-line no-bitwise
this.padding = (buffer.readUInt8(9) << 0xF0) + buffer.readUInt16BE(10);
this.timestamp1 = buffer.slice(12, 20);
this.timestamp2 = buffer.slice(20, 28);
this.timestamp3 = buffer.slice(28, 36);
break;
case 'receiver_feedback':
this.ssrc = buffer.readUInt32BE(4, 8);
this.sequenceNumber = buffer.readUInt16BE(8);
break;
default:
break;
}
return this;
};
switch (this.command) {
case 'invitation':
case 'invitation_accepted':
case 'invitation_rejected':
case 'end':
this.name = this.name || '';
buffer = Buffer.alloc(17 + Buffer.byteLength(this.name, 'utf8'));
buffer.writeUInt16BE(this.start, 0);
buffer.writeUInt16BE(commandByte, 2);
buffer.writeUInt32BE(this.version, 4);
buffer.writeUInt32BE(this.token, 8);
buffer.writeUInt32BE(this.ssrc, 12);
buffer.write(this.name, 16);
if (this.command !== 'end') {
buffer.writeUInt8(0, buffer.length - 1);
}
break;
case 'synchronization':
buffer = Buffer.alloc(36);
buffer.writeUInt16BE(this.start, 0);
buffer.writeUInt16BE(commandByte, 2);
buffer.writeUInt32BE(this.ssrc, 4);
buffer.writeUInt8(this.count, 8);
buffer.writeUInt8(this.padding >>> 0xF0, 9);
buffer.writeUInt16BE(this.padding & 0x00FFFF, 10);

ControlMessage.prototype.generateBuffer = function generateBuffer() {
let buffer;
const commandByte = commandToByte[this.command];
this.timestamp1.copy(buffer, 12);
this.timestamp2.copy(buffer, 20);
this.timestamp3.copy(buffer, 28);

switch (this.command) {
case 'invitation':
case 'invitation_accepted':
case 'invitation_rejected':
case 'end':
this.name = this.name || '';
buffer = Buffer.alloc(17 + Buffer.byteLength(this.name, 'utf8'));
buffer.writeUInt16BE(this.start, 0);
buffer.writeUInt16BE(commandByte, 2);
buffer.writeUInt32BE(this.version, 4);
buffer.writeUInt32BE(this.token, 8);
buffer.writeUInt32BE(this.ssrc, 12);
buffer.write(this.name, 16);
if (this.command !== 'end') {
buffer.writeUInt8(0, buffer.length - 1);
break;
case 'receiver_feedback':
buffer = Buffer.alloc(12);
buffer.writeUInt16BE(this.start, 0);
buffer.writeUInt16BE(commandByte, 2);
buffer.writeUInt32BE(this.ssrc, 4);
buffer.writeUInt16BE(this.sequenceNumber, 8);
break;
default:
break;
}
break;
case 'synchronization':
buffer = Buffer.alloc(36);
buffer.writeUInt16BE(this.start, 0);
buffer.writeUInt16BE(commandByte, 2);
buffer.writeUInt32BE(this.ssrc, 4);
buffer.writeUInt8(this.count, 8);
buffer.writeUInt8(this.padding >>> 0xF0, 9);
buffer.writeUInt16BE(this.padding & 0x00FFFF, 10);

this.timestamp1.copy(buffer, 12);
this.timestamp2.copy(buffer, 20);
this.timestamp3.copy(buffer, 28);

break;
case 'receiver_feedback':
buffer = Buffer.alloc(12);
buffer.writeUInt16BE(this.start, 0);
buffer.writeUInt16BE(commandByte, 2);
buffer.writeUInt32BE(this.ssrc, 4);
buffer.writeUInt16BE(this.sequenceNumber, 8);
break;
default:
break;
}
this.buffer = buffer;
return this;
};
this.buffer = buffer;
return this;
}
}

module.exports = ControlMessage;
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