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Diffstat (limited to 'signaling-server/node_modules/socket.io/node_modules/socket.io-client/lib/vendor/web-socket-js/flash-src/WebSocket.as')
-rw-r--r--signaling-server/node_modules/socket.io/node_modules/socket.io-client/lib/vendor/web-socket-js/flash-src/WebSocket.as464
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diff --git a/signaling-server/node_modules/socket.io/node_modules/socket.io-client/lib/vendor/web-socket-js/flash-src/WebSocket.as b/signaling-server/node_modules/socket.io/node_modules/socket.io-client/lib/vendor/web-socket-js/flash-src/WebSocket.as
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@@ -0,0 +1,464 @@
+// Copyright: Hiroshi Ichikawa <http://gimite.net/en/>
+// License: New BSD License
+// Reference: http://dev.w3.org/html5/websockets/
+// Reference: http://tools.ietf.org/html/draft-hixie-thewebsocketprotocol-76
+
+package {
+
+import com.adobe.net.proxies.RFC2817Socket;
+import com.gsolo.encryption.MD5;
+import com.hurlant.crypto.tls.TLSConfig;
+import com.hurlant.crypto.tls.TLSEngine;
+import com.hurlant.crypto.tls.TLSSecurityParameters;
+import com.hurlant.crypto.tls.TLSSocket;
+
+import flash.display.*;
+import flash.events.*;
+import flash.external.*;
+import flash.net.*;
+import flash.system.*;
+import flash.utils.*;
+
+import mx.controls.*;
+import mx.core.*;
+import mx.events.*;
+import mx.utils.*;
+
+public class WebSocket extends EventDispatcher {
+
+ private static var CONNECTING:int = 0;
+ private static var OPEN:int = 1;
+ private static var CLOSING:int = 2;
+ private static var CLOSED:int = 3;
+
+ private var id:int;
+ private var rawSocket:Socket;
+ private var tlsSocket:TLSSocket;
+ private var tlsConfig:TLSConfig;
+ private var socket:Socket;
+ private var url:String;
+ private var scheme:String;
+ private var host:String;
+ private var port:uint;
+ private var path:String;
+ private var origin:String;
+ private var requestedProtocols:Array;
+ private var acceptedProtocol:String;
+ private var buffer:ByteArray = new ByteArray();
+ private var headerState:int = 0;
+ private var readyState:int = CONNECTING;
+ private var cookie:String;
+ private var headers:String;
+ private var noiseChars:Array;
+ private var expectedDigest:String;
+ private var logger:IWebSocketLogger;
+
+ public function WebSocket(
+ id:int, url:String, protocols:Array, origin:String,
+ proxyHost:String, proxyPort:int,
+ cookie:String, headers:String,
+ logger:IWebSocketLogger) {
+ this.logger = logger;
+ this.id = id;
+ initNoiseChars();
+ this.url = url;
+ var m:Array = url.match(/^(\w+):\/\/([^\/:]+)(:(\d+))?(\/.*)?(\?.*)?$/);
+ if (!m) fatal("SYNTAX_ERR: invalid url: " + url);
+ this.scheme = m[1];
+ this.host = m[2];
+ var defaultPort:int = scheme == "wss" ? 443 : 80;
+ this.port = parseInt(m[4]) || defaultPort;
+ this.path = (m[5] || "/") + (m[6] || "");
+ this.origin = origin;
+ this.requestedProtocols = protocols;
+ this.cookie = cookie;
+ // if present and not the empty string, headers MUST end with \r\n
+ // headers should be zero or more complete lines, for example
+ // "Header1: xxx\r\nHeader2: yyyy\r\n"
+ this.headers = headers;
+
+ if (proxyHost != null && proxyPort != 0){
+ if (scheme == "wss") {
+ fatal("wss with proxy is not supported");
+ }
+ var proxySocket:RFC2817Socket = new RFC2817Socket();
+ proxySocket.setProxyInfo(proxyHost, proxyPort);
+ proxySocket.addEventListener(ProgressEvent.SOCKET_DATA, onSocketData);
+ rawSocket = socket = proxySocket;
+ } else {
+ rawSocket = new Socket();
+ if (scheme == "wss") {
+ tlsConfig= new TLSConfig(TLSEngine.CLIENT,
+ null, null, null, null, null,
+ TLSSecurityParameters.PROTOCOL_VERSION);
+ tlsConfig.trustAllCertificates = true;
+ tlsConfig.ignoreCommonNameMismatch = true;
+ tlsSocket = new TLSSocket();
+ tlsSocket.addEventListener(ProgressEvent.SOCKET_DATA, onSocketData);
+ socket = tlsSocket;
+ } else {
+ rawSocket.addEventListener(ProgressEvent.SOCKET_DATA, onSocketData);
+ socket = rawSocket;
+ }
+ }
+ rawSocket.addEventListener(Event.CLOSE, onSocketClose);
+ rawSocket.addEventListener(Event.CONNECT, onSocketConnect);
+ rawSocket.addEventListener(IOErrorEvent.IO_ERROR, onSocketIoError);
+ rawSocket.addEventListener(SecurityErrorEvent.SECURITY_ERROR, onSocketSecurityError);
+ rawSocket.connect(host, port);
+ }
+
+ /**
+ * @return This WebSocket's ID.
+ */
+ public function getId():int {
+ return this.id;
+ }
+
+ /**
+ * @return this WebSocket's readyState.
+ */
+ public function getReadyState():int {
+ return this.readyState;
+ }
+
+ public function getAcceptedProtocol():String {
+ return this.acceptedProtocol;
+ }
+
+ public function send(encData:String):int {
+ var data:String = decodeURIComponent(encData);
+ if (readyState == OPEN) {
+ socket.writeByte(0x00);
+ socket.writeUTFBytes(data);
+ socket.writeByte(0xff);
+ socket.flush();
+ logger.log("sent: " + data);
+ return -1;
+ } else if (readyState == CLOSING || readyState == CLOSED) {
+ var bytes:ByteArray = new ByteArray();
+ bytes.writeUTFBytes(data);
+ return bytes.length; // not sure whether it should include \x00 and \xff
+ } else {
+ fatal("invalid state");
+ return 0;
+ }
+ }
+
+ public function close(isError:Boolean = false):void {
+ logger.log("close");
+ try {
+ if (readyState == OPEN && !isError) {
+ socket.writeByte(0xff);
+ socket.writeByte(0x00);
+ socket.flush();
+ }
+ socket.close();
+ } catch (ex:Error) { }
+ readyState = CLOSED;
+ this.dispatchEvent(new WebSocketEvent(isError ? "error" : "close"));
+ }
+
+ private function onSocketConnect(event:Event):void {
+ logger.log("connected");
+
+ if (scheme == "wss") {
+ logger.log("starting SSL/TLS");
+ tlsSocket.startTLS(rawSocket, host, tlsConfig);
+ }
+
+ var defaultPort:int = scheme == "wss" ? 443 : 80;
+ var hostValue:String = host + (port == defaultPort ? "" : ":" + port);
+ var key1:String = generateKey();
+ var key2:String = generateKey();
+ var key3:String = generateKey3();
+ expectedDigest = getSecurityDigest(key1, key2, key3);
+ var opt:String = "";
+ if (requestedProtocols.length > 0) {
+ opt += "Sec-WebSocket-Protocol: " + requestedProtocols.join(",") + "\r\n";
+ }
+ // if caller passes additional headers they must end with "\r\n"
+ if (headers) opt += headers;
+
+ var req:String = StringUtil.substitute(
+ "GET {0} HTTP/1.1\r\n" +
+ "Upgrade: WebSocket\r\n" +
+ "Connection: Upgrade\r\n" +
+ "Host: {1}\r\n" +
+ "Origin: {2}\r\n" +
+ "Cookie: {3}\r\n" +
+ "Sec-WebSocket-Key1: {4}\r\n" +
+ "Sec-WebSocket-Key2: {5}\r\n" +
+ "{6}" +
+ "\r\n",
+ path, hostValue, origin, cookie, key1, key2, opt);
+ logger.log("request header:\n" + req);
+ socket.writeUTFBytes(req);
+ logger.log("sent key3: " + key3);
+ writeBytes(key3);
+ socket.flush();
+ }
+
+ private function onSocketClose(event:Event):void {
+ logger.log("closed");
+ readyState = CLOSED;
+ this.dispatchEvent(new WebSocketEvent("close"));
+ }
+
+ private function onSocketIoError(event:IOErrorEvent):void {
+ var message:String;
+ if (readyState == CONNECTING) {
+ message = "cannot connect to Web Socket server at " + url + " (IoError)";
+ } else {
+ message = "error communicating with Web Socket server at " + url + " (IoError)";
+ }
+ onError(message);
+ }
+
+ private function onSocketSecurityError(event:SecurityErrorEvent):void {
+ var message:String;
+ if (readyState == CONNECTING) {
+ message =
+ "cannot connect to Web Socket server at " + url + " (SecurityError)\n" +
+ "make sure the server is running and Flash socket policy file is correctly placed";
+ } else {
+ message = "error communicating with Web Socket server at " + url + " (SecurityError)";
+ }
+ onError(message);
+ }
+
+ private function onError(message:String):void {
+ if (readyState == CLOSED) return;
+ logger.error(message);
+ close(readyState != CONNECTING);
+ }
+
+ private function onSocketData(event:ProgressEvent):void {
+ var pos:int = buffer.length;
+ socket.readBytes(buffer, pos);
+ for (; pos < buffer.length; ++pos) {
+ if (headerState < 4) {
+ // try to find "\r\n\r\n"
+ if ((headerState == 0 || headerState == 2) && buffer[pos] == 0x0d) {
+ ++headerState;
+ } else if ((headerState == 1 || headerState == 3) && buffer[pos] == 0x0a) {
+ ++headerState;
+ } else {
+ headerState = 0;
+ }
+ if (headerState == 4) {
+ var headerStr:String = readUTFBytes(buffer, 0, pos + 1);
+ logger.log("response header:\n" + headerStr);
+ if (!validateHeader(headerStr)) return;
+ removeBufferBefore(pos + 1);
+ pos = -1;
+ }
+ } else if (headerState == 4) {
+ if (pos == 15) {
+ var replyDigest:String = readBytes(buffer, 0, 16);
+ logger.log("reply digest: " + replyDigest);
+ if (replyDigest != expectedDigest) {
+ onError("digest doesn't match: " + replyDigest + " != " + expectedDigest);
+ return;
+ }
+ headerState = 5;
+ removeBufferBefore(pos + 1);
+ pos = -1;
+ readyState = OPEN;
+ this.dispatchEvent(new WebSocketEvent("open"));
+ }
+ } else {
+ if (buffer[pos] == 0xff && pos > 0) {
+ if (buffer[0] != 0x00) {
+ onError("data must start with \\x00");
+ return;
+ }
+ var data:String = readUTFBytes(buffer, 1, pos - 1);
+ logger.log("received: " + data);
+ this.dispatchEvent(new WebSocketEvent("message", encodeURIComponent(data)));
+ removeBufferBefore(pos + 1);
+ pos = -1;
+ } else if (pos == 1 && buffer[0] == 0xff && buffer[1] == 0x00) { // closing
+ logger.log("received closing packet");
+ removeBufferBefore(pos + 1);
+ pos = -1;
+ close();
+ }
+ }
+ }
+ }
+
+ private function validateHeader(headerStr:String):Boolean {
+ var lines:Array = headerStr.split(/\r\n/);
+ if (!lines[0].match(/^HTTP\/1.1 101 /)) {
+ onError("bad response: " + lines[0]);
+ return false;
+ }
+ var header:Object = {};
+ var lowerHeader:Object = {};
+ for (var i:int = 1; i < lines.length; ++i) {
+ if (lines[i].length == 0) continue;
+ var m:Array = lines[i].match(/^(\S+): (.*)$/);
+ if (!m) {
+ onError("failed to parse response header line: " + lines[i]);
+ return false;
+ }
+ header[m[1].toLowerCase()] = m[2];
+ lowerHeader[m[1].toLowerCase()] = m[2].toLowerCase();
+ }
+ if (lowerHeader["upgrade"] != "websocket") {
+ onError("invalid Upgrade: " + header["Upgrade"]);
+ return false;
+ }
+ if (lowerHeader["connection"] != "upgrade") {
+ onError("invalid Connection: " + header["Connection"]);
+ return false;
+ }
+ if (!lowerHeader["sec-websocket-origin"]) {
+ if (lowerHeader["websocket-origin"]) {
+ onError(
+ "The WebSocket server speaks old WebSocket protocol, " +
+ "which is not supported by web-socket-js. " +
+ "It requires WebSocket protocol 76 or later. " +
+ "Try newer version of the server if available.");
+ } else {
+ onError("header Sec-WebSocket-Origin is missing");
+ }
+ return false;
+ }
+ var resOrigin:String = lowerHeader["sec-websocket-origin"];
+ if (resOrigin != origin) {
+ onError("origin doesn't match: '" + resOrigin + "' != '" + origin + "'");
+ return false;
+ }
+ if (requestedProtocols.length > 0) {
+ acceptedProtocol = header["sec-websocket-protocol"];
+ if (requestedProtocols.indexOf(acceptedProtocol) < 0) {
+ onError("protocol doesn't match: '" +
+ acceptedProtocol + "' not in '" + requestedProtocols.join(",") + "'");
+ return false;
+ }
+ }
+ return true;
+ }
+
+ private function removeBufferBefore(pos:int):void {
+ if (pos == 0) return;
+ var nextBuffer:ByteArray = new ByteArray();
+ buffer.position = pos;
+ buffer.readBytes(nextBuffer);
+ buffer = nextBuffer;
+ }
+
+ private function initNoiseChars():void {
+ noiseChars = new Array();
+ for (var i:int = 0x21; i <= 0x2f; ++i) {
+ noiseChars.push(String.fromCharCode(i));
+ }
+ for (var j:int = 0x3a; j <= 0x7a; ++j) {
+ noiseChars.push(String.fromCharCode(j));
+ }
+ }
+
+ private function generateKey():String {
+ var spaces:uint = randomInt(1, 12);
+ var max:uint = uint.MAX_VALUE / spaces;
+ var number:uint = randomInt(0, max);
+ var key:String = (number * spaces).toString();
+ var noises:int = randomInt(1, 12);
+ var pos:int;
+ for (var i:int = 0; i < noises; ++i) {
+ var char:String = noiseChars[randomInt(0, noiseChars.length - 1)];
+ pos = randomInt(0, key.length);
+ key = key.substr(0, pos) + char + key.substr(pos);
+ }
+ for (var j:int = 0; j < spaces; ++j) {
+ pos = randomInt(1, key.length - 1);
+ key = key.substr(0, pos) + " " + key.substr(pos);
+ }
+ return key;
+ }
+
+ private function generateKey3():String {
+ var key3:String = "";
+ for (var i:int = 0; i < 8; ++i) {
+ key3 += String.fromCharCode(randomInt(0, 255));
+ }
+ return key3;
+ }
+
+ private function getSecurityDigest(key1:String, key2:String, key3:String):String {
+ var bytes1:String = keyToBytes(key1);
+ var bytes2:String = keyToBytes(key2);
+ return MD5.rstr_md5(bytes1 + bytes2 + key3);
+ }
+
+ private function keyToBytes(key:String):String {
+ var keyNum:uint = parseInt(key.replace(/[^\d]/g, ""));
+ var spaces:uint = 0;
+ for (var i:int = 0; i < key.length; ++i) {
+ if (key.charAt(i) == " ") ++spaces;
+ }
+ var resultNum:uint = keyNum / spaces;
+ var bytes:String = "";
+ for (var j:int = 3; j >= 0; --j) {
+ bytes += String.fromCharCode((resultNum >> (j * 8)) & 0xff);
+ }
+ return bytes;
+ }
+
+ // Writes byte sequence to socket.
+ // bytes is String in special format where bytes[i] is i-th byte, not i-th character.
+ private function writeBytes(bytes:String):void {
+ for (var i:int = 0; i < bytes.length; ++i) {
+ socket.writeByte(bytes.charCodeAt(i));
+ }
+ }
+
+ // Reads specified number of bytes from buffer, and returns it as special format String
+ // where bytes[i] is i-th byte (not i-th character).
+ private function readBytes(buffer:ByteArray, start:int, numBytes:int):String {
+ buffer.position = start;
+ var bytes:String = "";
+ for (var i:int = 0; i < numBytes; ++i) {
+ // & 0xff is to make \x80-\xff positive number.
+ bytes += String.fromCharCode(buffer.readByte() & 0xff);
+ }
+ return bytes;
+ }
+
+ private function readUTFBytes(buffer:ByteArray, start:int, numBytes:int):String {
+ buffer.position = start;
+ var data:String = "";
+ for(var i:int = start; i < start + numBytes; ++i) {
+ // Workaround of a bug of ByteArray#readUTFBytes() that bytes after "\x00" is discarded.
+ if (buffer[i] == 0x00) {
+ data += buffer.readUTFBytes(i - buffer.position) + "\x00";
+ buffer.position = i + 1;
+ }
+ }
+ data += buffer.readUTFBytes(start + numBytes - buffer.position);
+ return data;
+ }
+
+ private function randomInt(min:uint, max:uint):uint {
+ return min + Math.floor(Math.random() * (Number(max) - min + 1));
+ }
+
+ private function fatal(message:String):void {
+ logger.error(message);
+ throw message;
+ }
+
+ // for debug
+ private function dumpBytes(bytes:String):void {
+ var output:String = "";
+ for (var i:int = 0; i < bytes.length; ++i) {
+ output += bytes.charCodeAt(i).toString() + ", ";
+ }
+ logger.log(output);
+ }
+
+}
+
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-24 18:13:13 +0000