107 lines
4.4 KiB
JavaScript
107 lines
4.4 KiB
JavaScript
/**
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* @description Mesh Agent Transport Module - using websocket relay
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* @author Ylian Saint-Hilaire
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* @version v0.0.1
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*/
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// Construct a MeshServer agent direction object
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var CreateKvmDataChannel = function (webchannel, module, keepalive) {
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var obj = {};
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obj.m = module; // This is the inner module (Terminal or Desktop)
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module.parent = obj;
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obj.webchannel = webchannel;
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obj.State = 0;
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obj.protocol = module.protocol; // 1 = SOL, 2 = KVM, 3 = IDER, 4 = Files, 5 = FileTransfer
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obj.onStateChanged = null;
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obj.onControlMsg = null;
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obj.debugmode = 0;
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obj.keepalive = keepalive;
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obj.rtcKeepAlive = null;
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// Private method
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//obj.debug = function (msg) { console.log(msg); }
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obj.Start = function () {
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if (obj.debugmode == 1) { console.log('start'); }
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obj.xxStateChange(3);
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obj.webchannel.onmessage = obj.xxOnMessage;
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obj.rtcKeepAlive = setInterval(obj.xxSendRtcKeepAlive, 30000);
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}
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obj.xxOnMessage = function (e) {
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//if (obj.debugmode == 1) { console.log('Recv', e.data); }
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//if (urlvars && urlvars['webrtctrace']) { console.log('WebRTC-Recv(' + obj.State + '): ', typeof e.data, e.data); }
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if (typeof e.data == 'string') { if (obj.onControlMsg != null) { obj.onControlMsg(e.data); } return; } // If this is a control message, handle it here.
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if (typeof e.data == 'object') {
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var f = new FileReader();
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if (f.readAsBinaryString) {
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// Chrome & Firefox (Draft)
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f.onload = function (e) { obj.xxOnSocketData(e.target.result); }
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f.readAsBinaryString(new Blob([e.data]));
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} else if (f.readAsArrayBuffer) {
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// Chrome & Firefox (Spec)
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f.onloadend = function (e) { obj.xxOnSocketData(e.target.result); }
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f.readAsArrayBuffer(e.data);
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} else {
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// IE10, readAsBinaryString does not exist, use an alternative.
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var binary = '', bytes = new Uint8Array(e.data), length = bytes.byteLength;
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for (var i = 0; i < length; i++) { binary += String.fromCharCode(bytes[i]); }
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obj.xxOnSocketData(binary);
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}
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} else {
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// If we get a string object, it maybe the WebRTC confirm. Ignore it.
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//obj.debug("Agent Redir Relay - OnData - " + typeof e.data + " - " + e.data.length);
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obj.xxOnSocketData(e.data);
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}
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};
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obj.xxOnSocketData = function (data) {
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if (!data) return;
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if (typeof data === 'object') {
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// This is an ArrayBuffer, convert it to a string array (used in IE)
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var binary = "", bytes = new Uint8Array(data), length = bytes.byteLength;
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for (var i = 0; i < length; i++) { binary += String.fromCharCode(bytes[i]); }
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data = binary;
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}
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else if (typeof data !== 'string') return;
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//console.log("xxOnSocketData", rstr2hex(data));
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return obj.m.ProcessData(data);
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}
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// Send a control message over the WebRTC data channel
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obj.sendCtrlMsg = function (x) {
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if (typeof x == 'string') {
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obj.webchannel.send(x);
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//if (urlvars && urlvars['webrtctrace']) { console.log('WebRTC-Send(' + obj.State + '): ', typeof x, x); }
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if (obj.keepalive != null) obj.keepalive.sendKeepAlive();
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}
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}
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// Send a binary message over the WebRTC data channel
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obj.send = function (x) {
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if (typeof x == 'string') { var b = new Uint8Array(x.length); for (var i = 0; i < x.length; ++i) { b[i] = x.charCodeAt(i); } x = b; }
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//if (urlvars && urlvars['webrtctrace']) { console.log('WebRTC-Send(' + obj.State + '): ', typeof x, x); }
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obj.webchannel.send(x);
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}
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obj.xxStateChange = function(newstate) {
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if (obj.State == newstate) return;
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obj.State = newstate;
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obj.m.xxStateChange(obj.State);
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if (obj.onStateChanged != null) obj.onStateChanged(obj, obj.State);
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}
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obj.Stop = function () {
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if (obj.debugmode == 1) { console.log('stop'); }
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if (obj.rtcKeepAlive != null) { clearInterval(obj.rtcKeepAlive); obj.rtcKeepAlive = null; }
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obj.xxStateChange(0);
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}
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obj.xxSendRtcKeepAlive = function () {
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//if (urlvars && urlvars['webrtctrace']) { console.log('WebRTC-SendKeepAlive()'); }
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obj.sendCtrlMsg(JSON.stringify({ action: 'ping' }));
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}
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return obj;
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}
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