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@@ -0,0 +1,1220 @@
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+/*! peerjs.js build:0.0.1, development. Copyright(c) 2013 Michelle Bu <michelle@michellebu.com> */
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+(function(exports){
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+var binaryFeatures = {};
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+binaryFeatures.useBlobBuilder = (function(){
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+ try {
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+ new Blob([]);
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+ return false;
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+ } catch (e) {
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+ return true;
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+ }
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+})();
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+
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+binaryFeatures.useArrayBufferView = !binaryFeatures.useBlobBuilder && (function(){
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+ try {
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+ return (new Blob([new Uint8Array([])])).size === 0;
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+ } catch (e) {
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+ return true;
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+ }
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+})();
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+binaryFeatures.supportsBinaryWebsockets = (function(){
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+ try {
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+ var wstest = new WebSocket('ws://null');
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+ wstest.onerror = function(){};
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+ if (typeof(wstest.binaryType) !== "undefined") {
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+ return true;
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+ } else {
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+ return false;
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+ }
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+ wstest.close();
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+ wstest = null;
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+ } catch (e) {
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+ return false;
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+ }
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+})();
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+
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+exports.binaryFeatures = binaryFeatures;
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+exports.BlobBuilder = window.WebKitBlobBuilder || window.MozBlobBuilder || window.MSBlobBuilder || window.BlobBuilder;
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+
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+function BufferBuilder(){
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+ this._pieces = [];
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+ this._parts = [];
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+}
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+
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+BufferBuilder.prototype.append = function(data) {
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+ if(typeof data === 'number') {
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+ this._pieces.push(data);
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+ } else {
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+ this._flush();
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+ this._parts.push(data);
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+ }
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+};
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+
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+BufferBuilder.prototype._flush = function() {
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+ if (this._pieces.length > 0) {
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+ var buf = new Uint8Array(this._pieces);
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+ if(!binaryFeatures.useArrayBufferView) {
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+ buf = buf.buffer;
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+ }
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+ this._parts.push(buf);
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+ this._pieces = [];
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+ }
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+};
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+
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+BufferBuilder.prototype.getBuffer = function() {
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+ this._flush();
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+ if(binaryFeatures.useBlobBuilder) {
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+ var builder = new BlobBuilder();
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+ for(var i = 0, ii = this._parts.length; i < ii; i++) {
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+ builder.append(this._parts[i]);
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+ }
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+ return builder.getBlob();
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+ } else {
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+ return new Blob(this._parts);
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+ }
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+};
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+exports.BinaryPack = {
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+ unpack: function(data){
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+ var unpacker = new Unpacker(data);
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+ return unpacker.unpack();
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+ },
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+ pack: function(data){
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+ var packer = new Packer();
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+ var buffer = packer.pack(data);
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+ return buffer;
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+ }
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+};
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+
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+function Unpacker (data){
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+ // Data is ArrayBuffer
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+ this.index = 0;
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+ this.dataBuffer = data;
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+ this.dataView = new Uint8Array(this.dataBuffer);
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+ this.length = this.dataBuffer.byteLength;
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+}
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+
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+
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+Unpacker.prototype.unpack = function(){
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+ var type = this.unpack_uint8();
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+ if (type < 0x80){
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+ var positive_fixnum = type;
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+ return positive_fixnum;
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+ } else if ((type ^ 0xe0) < 0x20){
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+ var negative_fixnum = (type ^ 0xe0) - 0x20;
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+ return negative_fixnum;
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+ }
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+ var size;
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+ if ((size = type ^ 0xa0) <= 0x0f){
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+ return this.unpack_raw(size);
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+ } else if ((size = type ^ 0xb0) <= 0x0f){
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+ return this.unpack_string(size);
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+ } else if ((size = type ^ 0x90) <= 0x0f){
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+ return this.unpack_array(size);
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+ } else if ((size = type ^ 0x80) <= 0x0f){
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+ return this.unpack_map(size);
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+ }
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+ switch(type){
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+ case 0xc0:
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+ return null;
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+ case 0xc1:
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+ return undefined;
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+ case 0xc2:
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+ return false;
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+ case 0xc3:
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+ return true;
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+ case 0xca:
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+ return this.unpack_float();
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+ case 0xcb:
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+ return this.unpack_double();
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+ case 0xcc:
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+ return this.unpack_uint8();
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+ case 0xcd:
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+ return this.unpack_uint16();
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+ case 0xce:
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+ return this.unpack_uint32();
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+ case 0xcf:
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+ return this.unpack_uint64();
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+ case 0xd0:
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+ return this.unpack_int8();
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+ case 0xd1:
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+ return this.unpack_int16();
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+ case 0xd2:
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+ return this.unpack_int32();
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+ case 0xd3:
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+ return this.unpack_int64();
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+ case 0xd4:
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+ return undefined;
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+ case 0xd5:
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+ return undefined;
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+ case 0xd6:
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+ return undefined;
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+ case 0xd7:
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+ return undefined;
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+ case 0xd8:
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+ size = this.unpack_uint16();
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+ return this.unpack_string(size);
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+ case 0xd9:
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+ size = this.unpack_uint32();
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+ return this.unpack_string(size);
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+ case 0xda:
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+ size = this.unpack_uint16();
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+ return this.unpack_raw(size);
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+ case 0xdb:
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+ size = this.unpack_uint32();
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+ return this.unpack_raw(size);
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+ case 0xdc:
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+ size = this.unpack_uint16();
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+ return this.unpack_array(size);
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+ case 0xdd:
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+ size = this.unpack_uint32();
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+ return this.unpack_array(size);
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+ case 0xde:
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+ size = this.unpack_uint16();
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+ return this.unpack_map(size);
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+ case 0xdf:
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+ size = this.unpack_uint32();
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+ return this.unpack_map(size);
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+ }
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+}
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+
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+Unpacker.prototype.unpack_uint8 = function(){
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+ var byte = this.dataView[this.index] & 0xff;
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+ this.index++;
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+ return byte;
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+};
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+
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+Unpacker.prototype.unpack_uint16 = function(){
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+ var bytes = this.read(2);
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+ var uint16 =
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+ ((bytes[0] & 0xff) * 256) + (bytes[1] & 0xff);
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+ this.index += 2;
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+ return uint16;
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+}
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+
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+Unpacker.prototype.unpack_uint32 = function(){
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+ var bytes = this.read(4);
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+ var uint32 =
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+ ((bytes[0] * 256 +
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+ bytes[1]) * 256 +
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+ bytes[2]) * 256 +
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+ bytes[3];
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+ this.index += 4;
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+ return uint32;
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+}
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+
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+Unpacker.prototype.unpack_uint64 = function(){
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+ var bytes = this.read(8);
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+ var uint64 =
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+ ((((((bytes[0] * 256 +
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+ bytes[1]) * 256 +
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+ bytes[2]) * 256 +
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+ bytes[3]) * 256 +
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+ bytes[4]) * 256 +
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+ bytes[5]) * 256 +
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+ bytes[6]) * 256 +
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+ bytes[7];
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+ this.index += 8;
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+ return uint64;
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+}
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+
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+
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+Unpacker.prototype.unpack_int8 = function(){
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+ var uint8 = this.unpack_uint8();
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+ return (uint8 < 0x80 ) ? uint8 : uint8 - (1 << 8);
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+};
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+
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+Unpacker.prototype.unpack_int16 = function(){
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+ var uint16 = this.unpack_uint16();
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+ return (uint16 < 0x8000 ) ? uint16 : uint16 - (1 << 16);
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+}
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+
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+Unpacker.prototype.unpack_int32 = function(){
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+ var uint32 = this.unpack_uint32();
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+ return (uint32 < Math.pow(2, 31) ) ? uint32 :
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+ uint32 - Math.pow(2, 32);
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+}
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+
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+Unpacker.prototype.unpack_int64 = function(){
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+ var uint64 = this.unpack_uint64();
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+ return (uint64 < Math.pow(2, 63) ) ? uint64 :
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+ uint64 - Math.pow(2, 64);
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+}
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+
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+Unpacker.prototype.unpack_raw = function(size){
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+ if ( this.length < this.index + size){
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+ throw new Error('BinaryPackFailure: index is out of range'
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+ + ' ' + this.index + ' ' + size + ' ' + this.length);
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+ }
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+ var buf = this.dataBuffer.slice(this.index, this.index + size);
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+ this.index += size;
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+
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+ //buf = util.bufferToString(buf);
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+
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+ return buf;
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+}
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+
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+Unpacker.prototype.unpack_string = function(size){
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+ var bytes = this.read(size);
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+ var i = 0, str = '', c, code;
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+ while(i < size){
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+ c = bytes[i];
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+ if ( c < 128){
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+ str += String.fromCharCode(c);
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+ i++;
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+ } else if ((c ^ 0xc0) < 32){
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+ code = ((c ^ 0xc0) << 6) | (bytes[i+1] & 63);
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+ str += String.fromCharCode(code);
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+ i += 2;
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+ } else {
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+ code = ((c & 15) << 12) | ((bytes[i+1] & 63) << 6) |
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+ (bytes[i+2] & 63);
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+ str += String.fromCharCode(code);
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+ i += 3;
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+ }
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+ }
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+ this.index += size;
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+ return str;
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+}
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+
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+Unpacker.prototype.unpack_array = function(size){
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+ var objects = new Array(size);
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+ for(var i = 0; i < size ; i++){
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+ objects[i] = this.unpack();
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+ }
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+ return objects;
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+}
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+
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+Unpacker.prototype.unpack_map = function(size){
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+ var map = {};
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+ for(var i = 0; i < size ; i++){
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+ var key = this.unpack();
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+ var value = this.unpack();
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+ map[key] = value;
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+ }
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+ return map;
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+}
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+
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+Unpacker.prototype.unpack_float = function(){
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+ var uint32 = this.unpack_uint32();
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+ var sign = uint32 >> 31;
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+ var exp = ((uint32 >> 23) & 0xff) - 127;
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+ var fraction = ( uint32 & 0x7fffff ) | 0x800000;
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+ return (sign == 0 ? 1 : -1) *
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+ fraction * Math.pow(2, exp - 23);
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+}
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+
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+Unpacker.prototype.unpack_double = function(){
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+ var h32 = this.unpack_uint32();
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+ var l32 = this.unpack_uint32();
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+ var sign = h32 >> 31;
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+ var exp = ((h32 >> 20) & 0x7ff) - 1023;
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+ var hfrac = ( h32 & 0xfffff ) | 0x100000;
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+ var frac = hfrac * Math.pow(2, exp - 20) +
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+ l32 * Math.pow(2, exp - 52);
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+ return (sign == 0 ? 1 : -1) * frac;
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+}
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+
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+Unpacker.prototype.read = function(length){
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+ var j = this.index;
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+ if (j + length <= this.length) {
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+ return this.dataView.subarray(j, j + length);
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+ } else {
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+ throw new Error('BinaryPackFailure: read index out of range');
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+ }
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+}
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+
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+function Packer (){
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+ this.bufferBuilder = new BufferBuilder();
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+}
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+
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+Packer.prototype.pack = function(value){
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+ var type = typeof(value);
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+ if (type == 'string'){
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+ this.pack_string(value);
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+ } else if (type == 'number'){
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+ if (Math.floor(value) === value){
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+ this.pack_integer(value);
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+ } else{
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+ this.pack_double(value);
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+ }
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+ } else if (type == 'boolean'){
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+ if (value === true){
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+ this.bufferBuilder.append(0xc3);
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+ } else if (value === false){
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+ this.bufferBuilder.append(0xc2);
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+ }
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+ } else if (type == 'undefined'){
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+ this.bufferBuilder.append(0xc0);
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+ } else if (type == 'object'){
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+ if (value === null){
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+ this.bufferBuilder.append(0xc0);
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+ } else {
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+ var constructor = value.constructor;
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+ if (constructor == Array){
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+ this.pack_array(value);
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+ } else if (constructor == Blob || constructor == File) {
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+ this.pack_bin(value);
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+ } else if (constructor == ArrayBuffer) {
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+ if(binaryFeatures.useArrayBufferView) {
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+ this.pack_bin(new Uint8Array(value));
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+ } else {
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+ this.pack_bin(value);
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+ }
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+ } else if ('BYTES_PER_ELEMENT' in value){
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+ if(binaryFeatures.useArrayBufferView) {
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+ this.pack_bin(value);
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+ } else {
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+ this.pack_bin(value.buffer);
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+ }
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+ } else if (constructor == Object){
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+ this.pack_object(value);
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+ } else if (constructor == Date){
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+ this.pack_string(value.toString());
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+ } else if (typeof value.toBinaryPack == 'function'){
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+ this.bufferBuilder.append(value.toBinaryPack());
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+ } else {
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+ throw new Error('Type "' + constructor.toString() + '" not yet supported');
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+ }
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+ }
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+ } else {
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+ throw new Error('Type "' + type + '" not yet supported');
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+ }
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+ return this.bufferBuilder.getBuffer();
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+}
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+
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+
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+Packer.prototype.pack_bin = function(blob){
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+ var length = blob.length || blob.byteLength || blob.size;
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+ if (length <= 0x0f){
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+ this.pack_uint8(0xa0 + length);
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+ } else if (length <= 0xffff){
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+ this.bufferBuilder.append(0xda) ;
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+ this.pack_uint16(length);
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+ } else if (length <= 0xffffffff){
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+ this.bufferBuilder.append(0xdb);
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+ this.pack_uint32(length);
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+ } else{
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+ throw new Error('Invalid length');
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+ return;
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+ }
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+ this.bufferBuilder.append(blob);
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+}
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+
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+Packer.prototype.pack_string = function(str){
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+ var length = str.length;
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+ if (length <= 0x0f){
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+ this.pack_uint8(0xb0 + length);
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+ } else if (length <= 0xffff){
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+ this.bufferBuilder.append(0xd8) ;
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+ this.pack_uint16(length);
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+ } else if (length <= 0xffffffff){
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+ this.bufferBuilder.append(0xd9);
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+ this.pack_uint32(length);
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+ } else{
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+ throw new Error('Invalid length');
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+ return;
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+ }
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+ this.bufferBuilder.append(str);
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+}
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+
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+Packer.prototype.pack_array = function(ary){
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+ var length = ary.length;
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+ if (length <= 0x0f){
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+ this.pack_uint8(0x90 + length);
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+ } else if (length <= 0xffff){
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+ this.bufferBuilder.append(0xdc)
|
|
|
+ this.pack_uint16(length);
|
|
|
+ } else if (length <= 0xffffffff){
|
|
|
+ this.bufferBuilder.append(0xdd);
|
|
|
+ this.pack_uint32(length);
|
|
|
+ } else{
|
|
|
+ throw new Error('Invalid length');
|
|
|
+ }
|
|
|
+ for(var i = 0; i < length ; i++){
|
|
|
+ this.pack(ary[i]);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+Packer.prototype.pack_integer = function(num){
|
|
|
+ if ( -0x20 <= num && num <= 0x7f){
|
|
|
+ this.bufferBuilder.append(num & 0xff);
|
|
|
+ } else if (0x00 <= num && num <= 0xff){
|
|
|
+ this.bufferBuilder.append(0xcc);
|
|
|
+ this.pack_uint8(num);
|
|
|
+ } else if (-0x80 <= num && num <= 0x7f){
|
|
|
+ this.bufferBuilder.append(0xd0);
|
|
|
+ this.pack_int8(num);
|
|
|
+ } else if ( 0x0000 <= num && num <= 0xffff){
|
|
|
+ this.bufferBuilder.append(0xcd);
|
|
|
+ this.pack_uint16(num);
|
|
|
+ } else if (-0x8000 <= num && num <= 0x7fff){
|
|
|
+ this.bufferBuilder.append(0xd1);
|
|
|
+ this.pack_int16(num);
|
|
|
+ } else if ( 0x00000000 <= num && num <= 0xffffffff){
|
|
|
+ this.bufferBuilder.append(0xce);
|
|
|
+ this.pack_uint32(num);
|
|
|
+ } else if (-0x80000000 <= num && num <= 0x7fffffff){
|
|
|
+ this.bufferBuilder.append(0xd2);
|
|
|
+ this.pack_int32(num);
|
|
|
+ } else if (-0x8000000000000000 <= num && num <= 0x7FFFFFFFFFFFFFFF){
|
|
|
+ this.bufferBuilder.append(0xd3);
|
|
|
+ this.pack_int64(num);
|
|
|
+ } else if (0x0000000000000000 <= num && num <= 0xFFFFFFFFFFFFFFFF){
|
|
|
+ this.bufferBuilder.append(0xcf);
|
|
|
+ this.pack_uint64(num);
|
|
|
+ } else{
|
|
|
+ throw new Error('Invalid integer');
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+Packer.prototype.pack_double = function(num){
|
|
|
+ var sign = 0;
|
|
|
+ if (num < 0){
|
|
|
+ sign = 1;
|
|
|
+ num = -num;
|
|
|
+ }
|
|
|
+ var exp = Math.floor(Math.log(num) / Math.LN2);
|
|
|
+ var frac0 = num / Math.pow(2, exp) - 1;
|
|
|
+ var frac1 = Math.floor(frac0 * Math.pow(2, 52));
|
|
|
+ var b32 = Math.pow(2, 32);
|
|
|
+ var h32 = (sign << 31) | ((exp+1023) << 20) |
|
|
|
+ (frac1 / b32) & 0x0fffff;
|
|
|
+ var l32 = frac1 % b32;
|
|
|
+ this.bufferBuilder.append(0xcb);
|
|
|
+ this.pack_int32(h32);
|
|
|
+ this.pack_int32(l32);
|
|
|
+}
|
|
|
+
|
|
|
+Packer.prototype.pack_object = function(obj){
|
|
|
+ var keys = Object.keys(obj);
|
|
|
+ var length = keys.length;
|
|
|
+ if (length <= 0x0f){
|
|
|
+ this.pack_uint8(0x80 + length);
|
|
|
+ } else if (length <= 0xffff){
|
|
|
+ this.bufferBuilder.append(0xde);
|
|
|
+ this.pack_uint16(length);
|
|
|
+ } else if (length <= 0xffffffff){
|
|
|
+ this.bufferBuilder.append(0xdf);
|
|
|
+ this.pack_uint32(length);
|
|
|
+ } else{
|
|
|
+ throw new Error('Invalid length');
|
|
|
+ }
|
|
|
+ for(var prop in obj){
|
|
|
+ if (obj.hasOwnProperty(prop)){
|
|
|
+ this.pack(prop);
|
|
|
+ this.pack(obj[prop]);
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+Packer.prototype.pack_uint8 = function(num){
|
|
|
+ this.bufferBuilder.append(num);
|
|
|
+}
|
|
|
+
|
|
|
+Packer.prototype.pack_uint16 = function(num){
|
|
|
+ this.bufferBuilder.append(num >> 8);
|
|
|
+ this.bufferBuilder.append(num & 0xff);
|
|
|
+}
|
|
|
+
|
|
|
+Packer.prototype.pack_uint32 = function(num){
|
|
|
+ var n = num & 0xffffffff;
|
|
|
+ this.bufferBuilder.append((n & 0xff000000) >>> 24);
|
|
|
+ this.bufferBuilder.append((n & 0x00ff0000) >>> 16);
|
|
|
+ this.bufferBuilder.append((n & 0x0000ff00) >>> 8);
|
|
|
+ this.bufferBuilder.append((n & 0x000000ff));
|
|
|
+}
|
|
|
+
|
|
|
+Packer.prototype.pack_uint64 = function(num){
|
|
|
+ var high = num / Math.pow(2, 32);
|
|
|
+ var low = num % Math.pow(2, 32);
|
|
|
+ this.bufferBuilder.append((high & 0xff000000) >>> 24);
|
|
|
+ this.bufferBuilder.append((high & 0x00ff0000) >>> 16);
|
|
|
+ this.bufferBuilder.append((high & 0x0000ff00) >>> 8);
|
|
|
+ this.bufferBuilder.append((high & 0x000000ff));
|
|
|
+ this.bufferBuilder.append((low & 0xff000000) >>> 24);
|
|
|
+ this.bufferBuilder.append((low & 0x00ff0000) >>> 16);
|
|
|
+ this.bufferBuilder.append((low & 0x0000ff00) >>> 8);
|
|
|
+ this.bufferBuilder.append((low & 0x000000ff));
|
|
|
+}
|
|
|
+
|
|
|
+Packer.prototype.pack_int8 = function(num){
|
|
|
+ this.bufferBuilder.append(num & 0xff);
|
|
|
+}
|
|
|
+
|
|
|
+Packer.prototype.pack_int16 = function(num){
|
|
|
+ this.bufferBuilder.append((num & 0xff00) >> 8);
|
|
|
+ this.bufferBuilder.append(num & 0xff);
|
|
|
+}
|
|
|
+
|
|
|
+Packer.prototype.pack_int32 = function(num){
|
|
|
+ this.bufferBuilder.append((num >>> 24) & 0xff);
|
|
|
+ this.bufferBuilder.append((num & 0x00ff0000) >>> 16);
|
|
|
+ this.bufferBuilder.append((num & 0x0000ff00) >>> 8);
|
|
|
+ this.bufferBuilder.append((num & 0x000000ff));
|
|
|
+}
|
|
|
+
|
|
|
+Packer.prototype.pack_int64 = function(num){
|
|
|
+ var high = Math.floor(num / Math.pow(2, 32));
|
|
|
+ var low = num % Math.pow(2, 32);
|
|
|
+ this.bufferBuilder.append((high & 0xff000000) >>> 24);
|
|
|
+ this.bufferBuilder.append((high & 0x00ff0000) >>> 16);
|
|
|
+ this.bufferBuilder.append((high & 0x0000ff00) >>> 8);
|
|
|
+ this.bufferBuilder.append((high & 0x000000ff));
|
|
|
+ this.bufferBuilder.append((low & 0xff000000) >>> 24);
|
|
|
+ this.bufferBuilder.append((low & 0x00ff0000) >>> 16);
|
|
|
+ this.bufferBuilder.append((low & 0x0000ff00) >>> 8);
|
|
|
+ this.bufferBuilder.append((low & 0x000000ff));
|
|
|
+}
|
|
|
+/**
|
|
|
+ * Light EventEmitter. Ported from Node.js/events.js
|
|
|
+ * Eric Zhang
|
|
|
+ */
|
|
|
+
|
|
|
+/**
|
|
|
+ * EventEmitter class
|
|
|
+ * Creates an object with event registering and firing methods
|
|
|
+ */
|
|
|
+function EventEmitter() {
|
|
|
+ // Initialise required storage variables
|
|
|
+ this._events = {};
|
|
|
+}
|
|
|
+
|
|
|
+var isArray = Array.isArray;
|
|
|
+
|
|
|
+
|
|
|
+EventEmitter.prototype.addListener = function(type, listener, scope, once) {
|
|
|
+ if ('function' !== typeof listener) {
|
|
|
+ throw new Error('addListener only takes instances of Function');
|
|
|
+ }
|
|
|
+
|
|
|
+ // To avoid recursion in the case that type == "newListeners"! Before
|
|
|
+ // adding it to the listeners, first emit "newListeners".
|
|
|
+ this.emit('newListener', type, typeof listener.listener === 'function' ?
|
|
|
+ listener.listener : listener);
|
|
|
+
|
|
|
+ if (!this._events[type]) {
|
|
|
+ // Optimize the case of one listener. Don't need the extra array object.
|
|
|
+ this._events[type] = listener;
|
|
|
+ } else if (isArray(this._events[type])) {
|
|
|
+
|
|
|
+ // If we've already got an array, just append.
|
|
|
+ this._events[type].push(listener);
|
|
|
+
|
|
|
+ } else {
|
|
|
+ // Adding the second element, need to change to array.
|
|
|
+ this._events[type] = [this._events[type], listener];
|
|
|
+ }
|
|
|
+
|
|
|
+};
|
|
|
+
|
|
|
+EventEmitter.prototype.on = EventEmitter.prototype.addListener;
|
|
|
+
|
|
|
+EventEmitter.prototype.once = function(type, listener, scope) {
|
|
|
+ if ('function' !== typeof listener) {
|
|
|
+ throw new Error('.once only takes instances of Function');
|
|
|
+ }
|
|
|
+
|
|
|
+ var self = this;
|
|
|
+ function g() {
|
|
|
+ self.removeListener(type, g);
|
|
|
+ listener.apply(this, arguments);
|
|
|
+ };
|
|
|
+
|
|
|
+ g.listener = listener;
|
|
|
+ self.on(type, g);
|
|
|
+
|
|
|
+ return this;
|
|
|
+};
|
|
|
+
|
|
|
+EventEmitter.prototype.removeListener = function(type, listener, scope) {
|
|
|
+ if ('function' !== typeof listener) {
|
|
|
+ throw new Error('removeListener only takes instances of Function');
|
|
|
+ }
|
|
|
+
|
|
|
+ // does not use listeners(), so no side effect of creating _events[type]
|
|
|
+ if (!this._events[type]) return this;
|
|
|
+
|
|
|
+ var list = this._events[type];
|
|
|
+
|
|
|
+ if (isArray(list)) {
|
|
|
+ var position = -1;
|
|
|
+ for (var i = 0, length = list.length; i < length; i++) {
|
|
|
+ if (list[i] === listener ||
|
|
|
+ (list[i].listener && list[i].listener === listener))
|
|
|
+ {
|
|
|
+ position = i;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if (position < 0) return this;
|
|
|
+ list.splice(position, 1);
|
|
|
+ if (list.length == 0)
|
|
|
+ delete this._events[type];
|
|
|
+ } else if (list === listener ||
|
|
|
+ (list.listener && list.listener === listener))
|
|
|
+ {
|
|
|
+ delete this._events[type];
|
|
|
+ }
|
|
|
+
|
|
|
+ return this;
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+EventEmitter.prototype.off = EventEmitter.prototype.removeListener;
|
|
|
+
|
|
|
+
|
|
|
+EventEmitter.prototype.removeAllListeners = function(type) {
|
|
|
+ if (arguments.length === 0) {
|
|
|
+ this._events = {};
|
|
|
+ return this;
|
|
|
+ }
|
|
|
+
|
|
|
+ // does not use listeners(), so no side effect of creating _events[type]
|
|
|
+ if (type && this._events && this._events[type]) this._events[type] = null;
|
|
|
+ return this;
|
|
|
+};
|
|
|
+
|
|
|
+EventEmitter.prototype.listeners = function(type) {
|
|
|
+ if (!this._events[type]) this._events[type] = [];
|
|
|
+ if (!isArray(this._events[type])) {
|
|
|
+ this._events[type] = [this._events[type]];
|
|
|
+ }
|
|
|
+ return this._events[type];
|
|
|
+};
|
|
|
+
|
|
|
+EventEmitter.prototype.emit = function(type) {
|
|
|
+ var type = arguments[0];
|
|
|
+ var handler = this._events[type];
|
|
|
+ if (!handler) return false;
|
|
|
+
|
|
|
+ if (typeof handler == 'function') {
|
|
|
+ switch (arguments.length) {
|
|
|
+ // fast cases
|
|
|
+ case 1:
|
|
|
+ handler.call(this);
|
|
|
+ break;
|
|
|
+ case 2:
|
|
|
+ handler.call(this, arguments[1]);
|
|
|
+ break;
|
|
|
+ case 3:
|
|
|
+ handler.call(this, arguments[1], arguments[2]);
|
|
|
+ break;
|
|
|
+ // slower
|
|
|
+ default:
|
|
|
+ var l = arguments.length;
|
|
|
+ var args = new Array(l - 1);
|
|
|
+ for (var i = 1; i < l; i++) args[i - 1] = arguments[i];
|
|
|
+ handler.apply(this, args);
|
|
|
+ }
|
|
|
+ return true;
|
|
|
+
|
|
|
+ } else if (isArray(handler)) {
|
|
|
+ var l = arguments.length;
|
|
|
+ var args = new Array(l - 1);
|
|
|
+ for (var i = 1; i < l; i++) args[i - 1] = arguments[i];
|
|
|
+
|
|
|
+ var listeners = handler.slice();
|
|
|
+ for (var i = 0, l = listeners.length; i < l; i++) {
|
|
|
+ listeners[i].apply(this, args);
|
|
|
+ }
|
|
|
+ return true;
|
|
|
+ } else {
|
|
|
+ return false;
|
|
|
+ }
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+var util = {
|
|
|
+
|
|
|
+ debug: false,
|
|
|
+
|
|
|
+ inherits: function(ctor, superCtor) {
|
|
|
+ ctor.super_ = superCtor;
|
|
|
+ ctor.prototype = Object.create(superCtor.prototype, {
|
|
|
+ constructor: {
|
|
|
+ value: ctor,
|
|
|
+ enumerable: false,
|
|
|
+ writable: true,
|
|
|
+ configurable: true
|
|
|
+ }
|
|
|
+ });
|
|
|
+ },
|
|
|
+ extend: function(dest, source) {
|
|
|
+ for(var key in source) {
|
|
|
+ if(source.hasOwnProperty(key)) {
|
|
|
+ dest[key] = source[key];
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return dest;
|
|
|
+ },
|
|
|
+ pack: BinaryPack.pack,
|
|
|
+ unpack: BinaryPack.unpack,
|
|
|
+ randomPort: function() {
|
|
|
+ return Math.round(Math.random() * 60535) + 5000;
|
|
|
+ },
|
|
|
+
|
|
|
+ log: function () {
|
|
|
+ if (util.debug) {
|
|
|
+ for (var i = 0; i < arguments.length; i++) {
|
|
|
+ console.log('*', i, '-- ', arguments[i]);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ },
|
|
|
+
|
|
|
+ setZeroTimeout: (function(global) {
|
|
|
+ var timeouts = [];
|
|
|
+ var messageName = 'zero-timeout-message';
|
|
|
+
|
|
|
+ // Like setTimeout, but only takes a function argument. There's
|
|
|
+ // no time argument (always zero) and no arguments (you have to
|
|
|
+ // use a closure).
|
|
|
+ function setZeroTimeoutPostMessage(fn) {
|
|
|
+ timeouts.push(fn);
|
|
|
+ global.postMessage(messageName, '*');
|
|
|
+ }
|
|
|
+
|
|
|
+ function handleMessage(event) {
|
|
|
+ if (event.source == global && event.data == messageName) {
|
|
|
+ if (event.stopPropagation) {
|
|
|
+ event.stopPropagation();
|
|
|
+ }
|
|
|
+ if (timeouts.length) {
|
|
|
+ timeouts.shift()();
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (global.addEventListener) {
|
|
|
+ global.addEventListener('message', handleMessage, true);
|
|
|
+ } else if (global.attachEvent) {
|
|
|
+ global.attachEvent('onmessage', handleMessage);
|
|
|
+ }
|
|
|
+ return setZeroTimeoutPostMessage;
|
|
|
+ }(this))
|
|
|
+};
|
|
|
+var RTCPeerConnection = null;
|
|
|
+var getUserMedia = null;
|
|
|
+var attachMediaStream = null;
|
|
|
+var browserisms = null;
|
|
|
+
|
|
|
+if (navigator.mozGetUserMedia) {
|
|
|
+ browserisms = 'Firefox'
|
|
|
+
|
|
|
+ RTCPeerConnection = mozRTCPeerConnection;
|
|
|
+
|
|
|
+ getUserMedia = navigator.mozGetUserMedia.bind(navigator);
|
|
|
+ attachMediaStream = function(element, stream) {
|
|
|
+ console.log("Attaching media stream");
|
|
|
+ element.mozSrcObject = stream;
|
|
|
+ element.play();
|
|
|
+ };
|
|
|
+} else if (navigator.webkitGetUserMedia) {
|
|
|
+ browserisms = 'Webkit'
|
|
|
+
|
|
|
+ RTCPeerConnection = webkitRTCPeerConnection;
|
|
|
+
|
|
|
+ getUserMedia = navigator.webkitGetUserMedia.bind(navigator);
|
|
|
+ attachMediaStream = function(element, stream) {
|
|
|
+ element.src = webkitURL.createObjectURL(stream);
|
|
|
+ };
|
|
|
+}
|
|
|
+
|
|
|
+exports.RTCPeerConnection = RTCPeerConnection;
|
|
|
+exports.getUserMedia = getUserMedia;
|
|
|
+exports.attachMediaStream = attachMediaStream;
|
|
|
+exports.browserisms = browserisms;
|
|
|
+function Peer(options) {
|
|
|
+ if (!(this instanceof Peer)) return new Peer(options);
|
|
|
+ EventEmitter.call(this);
|
|
|
+
|
|
|
+ options = util.extend({
|
|
|
+ debug: false,
|
|
|
+ config: { 'iceServers': [{ 'url': 'stun:stun.l.google.com:19302' }] },
|
|
|
+ ws: 'ws://localhost'
|
|
|
+ }, options);
|
|
|
+ util.debug = options.debug;
|
|
|
+
|
|
|
+ this._id = null;
|
|
|
+
|
|
|
+ // Connections
|
|
|
+ this.connections = {};
|
|
|
+ this._socket = new WebSocket(options.ws);
|
|
|
+
|
|
|
+ // Init socket msg handlers
|
|
|
+ var self = this;
|
|
|
+ this._socket.onopen = function() {
|
|
|
+ self.socketInit();
|
|
|
+ };
|
|
|
+};
|
|
|
+
|
|
|
+util.inherits(Peer, EventEmitter);
|
|
|
+
|
|
|
+/** Start up websocket communications. */
|
|
|
+Peer.prototype.socketInit = function() {
|
|
|
+ var self = this;
|
|
|
+ // Announce as a PEER to receive an ID.
|
|
|
+ this._socket.send(JSON.stringify({
|
|
|
+ type: 'PEER'
|
|
|
+ }));
|
|
|
+
|
|
|
+ this._socket.onmessage = function(event) {
|
|
|
+ var message = JSON.parse(event.data);
|
|
|
+ var peer = message.src;
|
|
|
+ var connection = self.connections[peer];
|
|
|
+
|
|
|
+ switch (message.type) {
|
|
|
+ case 'ID':
|
|
|
+ self._id = message.id;
|
|
|
+ self.emit('ready', self._id);
|
|
|
+ break;
|
|
|
+ case 'OFFER':
|
|
|
+ var options = {
|
|
|
+ metadata: message.metadata,
|
|
|
+ peer: peer,
|
|
|
+ id: self._id,
|
|
|
+ originator: false,
|
|
|
+ sdp: message.sdp
|
|
|
+ };
|
|
|
+ var connection = new DataConnection(options, socket, function(err, connection) {
|
|
|
+ if (!err) {
|
|
|
+ self.emit('connection', connection);
|
|
|
+ }
|
|
|
+ });
|
|
|
+ self.connections[peer] = connection;
|
|
|
+ break;
|
|
|
+ case 'ANSWER':
|
|
|
+ if (connection) connection.handleAnswer(message);
|
|
|
+ break;
|
|
|
+ case 'CANDIDATE':
|
|
|
+ if (connection) connection.handleCandidate(message);
|
|
|
+ break;
|
|
|
+ case 'LEAVE':
|
|
|
+ if (connection) connection.handleLeave(message);
|
|
|
+ break;
|
|
|
+ case 'PORT':
|
|
|
+ if (browserisms && browserisms == 'Firefox') {
|
|
|
+ connection.handlePort(message);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ case 'DEFAULT':
|
|
|
+ util.log('PEER: unrecognized message ', message.type);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ };
|
|
|
+
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+Peer.prototype.connect = function(peer, metadata, cb) {
|
|
|
+ if (typeof metadata === 'function' && !cb) cb = metadata; metadata = false;
|
|
|
+
|
|
|
+ var options = {
|
|
|
+ metadata: metadata,
|
|
|
+ id: this._id,
|
|
|
+ peer: peer,
|
|
|
+ originator: true
|
|
|
+ };
|
|
|
+ var connection = new DataConnection(options, socket, cb);
|
|
|
+ this.connections[peer] = connection;
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+exports.Peer = Peer;
|
|
|
+
|
|
|
+function DataConnection(options, socket, cb) {
|
|
|
+ if (!(this instanceof DataConnection)) return new DataConnection(options);
|
|
|
+ EventEmitter.call(this);
|
|
|
+
|
|
|
+ // Is this the originator?
|
|
|
+ this._originator = options.originator || false;
|
|
|
+ this._cb = cb;
|
|
|
+ this._peer = options.peer;
|
|
|
+ this._id = options.id;
|
|
|
+
|
|
|
+ var sdp = options.sdp;
|
|
|
+ this.metadata = options.metadata;
|
|
|
+
|
|
|
+ // Set up socket handlers.
|
|
|
+ this._socket = socket;
|
|
|
+
|
|
|
+ // Firefoxism: connectDataConnection ports.
|
|
|
+ if (browserisms == 'Firefox') {
|
|
|
+ if (!DataConnection.usedPorts) {
|
|
|
+ DataConnection.usedPorts = [];
|
|
|
+ }
|
|
|
+ this.localPort = util.randomPort();
|
|
|
+ while (DataConnection.usedPorts.indexOf(this.localPort) != -1) {
|
|
|
+ this.localPort = util.randomPort();
|
|
|
+ }
|
|
|
+ this.remotePort = util.randomPort();
|
|
|
+ while (this.remotePort == this.localPort ||
|
|
|
+ DataConnection.usedPorts.indexOf(this.localPort) != -1) {
|
|
|
+ this.remotePort = util.randomPort();
|
|
|
+ }
|
|
|
+ DataConnection.usedPorts.push(this.remotePort);
|
|
|
+ DataConnection.usedPorts.push(this.localPort);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Set up PeerConnection.
|
|
|
+ this._startPeerConnection();
|
|
|
+ if (this._originator) {
|
|
|
+ var self = this;
|
|
|
+ this._setupDataConnection(function() {
|
|
|
+ this._maybeBrowserisms();
|
|
|
+ });
|
|
|
+ } else if (sdp) {
|
|
|
+ try {
|
|
|
+ sdp = new RTCSessionDescription(message.sdp);
|
|
|
+ } catch(e) {
|
|
|
+ util.log('Firefox');
|
|
|
+ }
|
|
|
+ this._pc.setRemoteDescription(sdp, function() {
|
|
|
+ util.log('setRemoteDescription: offer');
|
|
|
+
|
|
|
+ self._setupDataChannel(function() {
|
|
|
+ self._maybeBrowserisms();
|
|
|
+ });
|
|
|
+ }, function(err) {
|
|
|
+ util.log('failed to setRemoteDescription with offer, ', err);
|
|
|
+ });
|
|
|
+ }
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+DataConnection.prototype.handleAnswer(message) {
|
|
|
+ var sdp = message.sdp;
|
|
|
+ try {
|
|
|
+ sdp = new RTCSessionDescription(message.sdp);
|
|
|
+ } catch(e) {
|
|
|
+ util.log('Firefox');
|
|
|
+ }
|
|
|
+ var self = this;
|
|
|
+ this._pc.setRemoteDescription(sdp, function() {
|
|
|
+ util.log('setRemoteDescription: answer');
|
|
|
+ // Firefoxism
|
|
|
+ if (browserisms == 'Firefox') {
|
|
|
+ self._pc.connectDataConnection(self.localPort, self.remotePort);
|
|
|
+ self._socket.send(JSON.stringify({
|
|
|
+ type: 'PORT',
|
|
|
+ dst: self._peer,
|
|
|
+ src: self._id,
|
|
|
+ remote: self.localPort,
|
|
|
+ local: self.remotePort
|
|
|
+ }));
|
|
|
+ }
|
|
|
+ util.log('ORIGINATOR: PeerConnection success');
|
|
|
+ }, function(err) {
|
|
|
+ util.log('failed to setRemoteDescription, ', err);
|
|
|
+ });
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+DataConnection.prototype.handleCandidate(message) {
|
|
|
+ util.log(message.candidate);
|
|
|
+ var candidate = new RTCIceCandidate(message.candidate);
|
|
|
+ this._pc.addIceCandidate(candidate);
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+DataConnection.prototype.handleLeave(message) {
|
|
|
+ util.log('counterpart disconnected');
|
|
|
+ if (!!this._pc && this._pc.readyState != 'closed') {
|
|
|
+ this._pc.close();
|
|
|
+ this._pc = null;
|
|
|
+ }
|
|
|
+ if (!!this._dc && this._dc.readyState != 'closed') {
|
|
|
+ this._dc.close();
|
|
|
+ this._dc = null;
|
|
|
+ }
|
|
|
+ this.emit('close', this._peer);
|
|
|
+};
|
|
|
+
|
|
|
+DataConnection.prototype.handlePort(message) {
|
|
|
+ if (!DataConnection.usedPorts) {
|
|
|
+ DataConnection.usedPorts = [];
|
|
|
+ }
|
|
|
+ DataConnection.usedPorts.push(message.local);
|
|
|
+ DataConnection.usedPorts.push(message.remote);
|
|
|
+ this._pc.connectDataConnection(message.local, message.remote);
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+/** Starts a PeerConnection and sets up handlers. */
|
|
|
+DataConnection.prototype._startPeerConnection = function() {
|
|
|
+ this._pc = new RTCPeerConnection(this._config, { optional:[ { RtpDataChannels: true } ]});
|
|
|
+ this._setupIce();
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+/** Takes care of ice handlers. */
|
|
|
+DataConnection.prototype._setupIce = function() {
|
|
|
+ var self = this;
|
|
|
+ this._pc.onicecandidate = function(event) {
|
|
|
+ util.log('candidates received');
|
|
|
+ if (event.candidate) {
|
|
|
+ self._socket.send(JSON.stringify({
|
|
|
+ type: 'CANDIDATE',
|
|
|
+ candidate: event.candidate,
|
|
|
+ dst: self._peer,
|
|
|
+ src: self._id
|
|
|
+ }));
|
|
|
+ } else {
|
|
|
+ util.log("End of candidates.");
|
|
|
+ }
|
|
|
+ };
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+/** Sets up DataChannel handlers. */
|
|
|
+DataConnection.prototype._setupDataChannel = function(cb) {
|
|
|
+ var self = this;
|
|
|
+ if (this._originator) {
|
|
|
+ /** ORIGINATOR SETUP */
|
|
|
+ if (browserisms == 'Webkit') {
|
|
|
+
|
|
|
+ // TODO: figure out the right thing to do with this.
|
|
|
+ this._pc.onstatechange = function() {
|
|
|
+ util.log('State Change: ', self._pc.readyState);
|
|
|
+ }
|
|
|
+
|
|
|
+ } else {
|
|
|
+ this._pc.onconnection = function() {
|
|
|
+ util.log('ORIGINATOR: onconnection triggered');
|
|
|
+
|
|
|
+ self._startDataChannel();
|
|
|
+ };
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ /** TARGET SETUP */
|
|
|
+ this._pc.ondatachannel = function(dc) {
|
|
|
+ util.log('SINK: ondatachannel triggered');
|
|
|
+ self._dc = dc;
|
|
|
+ self._dc.binaryType = 'blob';
|
|
|
+
|
|
|
+ self._cb(null, self);
|
|
|
+
|
|
|
+ self._dc.onmessage = function(e) {
|
|
|
+ self._handleDataMessage(e);
|
|
|
+ };
|
|
|
+ };
|
|
|
+
|
|
|
+ this._pc.onconnection = function() {
|
|
|
+ util.log('SINK: onconnection triggered');
|
|
|
+ };
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ this._pc.onclosedconnection = function() {
|
|
|
+ // Remove socket handlers perhaps.
|
|
|
+ self.emit('close', self._peer);
|
|
|
+ };
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+DataConnection.prototype._startDataChannel = function() {
|
|
|
+ var self = this;
|
|
|
+ this._dc = this._pc.createDataChannel(this._peer, { reliable: false });
|
|
|
+ this._dc.binaryType = 'blob';
|
|
|
+
|
|
|
+ this._cb(null, self);
|
|
|
+
|
|
|
+ this._dc.onmessage = function(e) {
|
|
|
+ self._handleDataMessage(e);
|
|
|
+ };
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+/** Decide whether to handle Firefoxisms. */
|
|
|
+DataConnection.prototype._maybeBrowserisms = function() {
|
|
|
+ var self = this;
|
|
|
+ if (browserisms == 'Firefox') {
|
|
|
+ getUserMedia({ audio: true, fake: true }, function(s) {
|
|
|
+ self._pc.addStream(s);
|
|
|
+
|
|
|
+ if (self._originator) {
|
|
|
+ self._makeOffer();
|
|
|
+ } else {
|
|
|
+ self._makeAnswer();
|
|
|
+ }
|
|
|
+
|
|
|
+ }, function(err) { util.log('crap'); });
|
|
|
+ } else {
|
|
|
+ if (self._originator) {
|
|
|
+ this._makeOffer();
|
|
|
+ } else {
|
|
|
+ this._makeAnswer();
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/** Create an answer for PC. */
|
|
|
+DataConnection.prototype._makeAnswer = function() {
|
|
|
+ var self = this;
|
|
|
+
|
|
|
+ this._pc.createAnswer(function(answer) {
|
|
|
+ util.log('createAnswer');
|
|
|
+ self._pc.setLocalDescription(answer, function() {
|
|
|
+ util.log('setLocalDescription: answer');
|
|
|
+ self._socket.send(JSON.stringify({
|
|
|
+ type: 'ANSWER',
|
|
|
+ src: self._id,
|
|
|
+ sdp: answer,
|
|
|
+ dst: self._peer
|
|
|
+ }));
|
|
|
+ }, function(err) {
|
|
|
+ util.log('failed to setLocalDescription, ', err)
|
|
|
+ });
|
|
|
+ }, function(err) {
|
|
|
+ util.log('failed to create answer, ', err)
|
|
|
+ });
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+/** Create an offer for PC. */
|
|
|
+DataConnection.prototype._makeOffer = function() {
|
|
|
+ var self = this;
|
|
|
+
|
|
|
+ this._pc.createOffer(function(offer) {
|
|
|
+ util.log('createOffer')
|
|
|
+ self._pc.setLocalDescription(offer, function() {
|
|
|
+ util.log('setLocalDescription: offer');
|
|
|
+ self._socket.send(JSON.stringify({
|
|
|
+ type: 'OFFER',
|
|
|
+ sdp: offer,
|
|
|
+ dst: self._peer,
|
|
|
+ src: self._id,
|
|
|
+ metadata: self._metadata
|
|
|
+ }));
|
|
|
+ }, function(err) {
|
|
|
+ util.log('failed to setLocalDescription, ', err);
|
|
|
+ });
|
|
|
+ });
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+/** Allows user to send data. */
|
|
|
+DataConnection.prototype.send = function(data) {
|
|
|
+ var ab = BinaryPack.pack(data);
|
|
|
+ this._dc.send(ab);
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+// Handles a DataChannel message.
|
|
|
+DataConnection.prototype._handleDataMessage = function(e) {
|
|
|
+ var self = this;
|
|
|
+ var fr = new FileReader();
|
|
|
+ fr.onload = function(evt) {
|
|
|
+ var ab = evt.target.result;
|
|
|
+ var data = BinaryPack.unpack(ab);
|
|
|
+
|
|
|
+ self.emit('data', data);
|
|
|
+ };
|
|
|
+ fr.readAsArrayBuffer(e.data);
|
|
|
+};
|
|
|
+
|
|
|
+exports.DataChannel = DataChannel;
|
|
|
+
|
|
|
+
|
|
|
+})(this);
|
Michelle Bu