📄 cometd.js
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if (!this.phonyForm) { if (dojo.render.html.ie) { this.phonyForm = document.createElement("<form enctype='application/x-www-form-urlencoded' method='POST' style='display: none;'>"); dojo.body().appendChild(this.phonyForm); } else { this.phonyForm = document.createElement("form"); this.phonyForm.style.display = "none"; dojo.body().appendChild(this.phonyForm); this.phonyForm.enctype = "application/x-www-form-urlencoded"; this.phonyForm.method = "POST"; } } this.phonyForm.action = url || cometd.url; this.phonyForm.target = this.rcvNodeName; this.phonyForm.setAttribute("target", this.rcvNodeName); while (this.phonyForm.firstChild) { this.phonyForm.removeChild(this.phonyForm.firstChild); } for (var x in content) { var tn; if (dojo.render.html.ie) { tn = document.createElement("<input type='hidden' name='" + x + "' value='" + content[x] + "'>"); this.phonyForm.appendChild(tn); } else { tn = document.createElement("input"); this.phonyForm.appendChild(tn); tn.type = "hidden"; tn.name = x; tn.value = content[x]; } } this.phonyForm.submit(); }; this.processBacklog = function () { while (this.backlog.length > 0) { this.sendMessage(this.backlog.shift(), true); } }; this.sendMessage = function (message, bypassBacklog) { if ((bypassBacklog) || (this.connected)) { message.connectionId = this.connectionId; message.clientId = cometd.clientId; var bindArgs = {url:cometd.url || djConfig["cometdRoot"], method:"POST", mimetype:"text/json", content:{message:dojo.json.serialize([message])}}; return dojo.io.bind(bindArgs); } else { this.backlog.push(message); } }; this.startup = function (handshakeData) { dojo.debug("startup!"); dojo.debug(dojo.json.serialize(handshakeData)); if (this.connected) { return; } this.rcvNodeName = "cometdRcv_" + cometd._getRandStr(); var initUrl = cometd.url + "/?tunnelInit=iframe"; if (false && dojo.render.html.ie) { this.rcvNode = new ActiveXObject("htmlfile"); this.rcvNode.open(); this.rcvNode.write("<html>"); this.rcvNode.write("<script>document.domain = '" + document.domain + "'"); this.rcvNode.write("</html>"); this.rcvNode.close(); var ifrDiv = this.rcvNode.createElement("div"); this.rcvNode.appendChild(ifrDiv); this.rcvNode.parentWindow.dojo = dojo; ifrDiv.innerHTML = "<iframe src='" + initUrl + "'></iframe>"; } else { this.rcvNode = dojo.io.createIFrame(this.rcvNodeName, "", initUrl); } };};cometd.mimeReplaceTransport = new function () { this.connected = false; this.connectionId = null; this.xhr = null; this.authToken = null; this.lastTimestamp = null; this.lastId = null; this.backlog = []; this.check = function (types, version, xdomain) { return ((!xdomain) && (dojo.render.html.mozilla) && (dojo.lang.inArray(types, "mime-message-block"))); }; this.tunnelInit = function () { if (this.connected) { return; } this.openTunnelWith({message:dojo.json.serialize([{channel:"/meta/connect", clientId:cometd.clientId, connectionType:"mime-message-block"}])}); this.connected = true; }; this.tunnelCollapse = function () { if (this.connected) { this.connected = false; this.openTunnelWith({message:dojo.json.serialize([{channel:"/meta/reconnect", clientId:cometd.clientId, connectionId:this.connectionId, timestamp:this.lastTimestamp, id:this.lastId}])}); } }; this.deliver = cometd.iframeTransport.deliver; this.handleOnLoad = function (resp) { cometd.deliver(dojo.json.evalJson(this.xhr.responseText)); }; this.openTunnelWith = function (content, url) { this.xhr = dojo.hostenv.getXmlhttpObject(); this.xhr.multipart = true; if (dojo.render.html.mozilla) { this.xhr.addEventListener("load", dojo.lang.hitch(this, "handleOnLoad"), false); } else { if (dojo.render.html.safari) { dojo.debug("Webkit is broken with multipart responses over XHR = ("); this.xhr.onreadystatechange = dojo.lang.hitch(this, "handleOnLoad"); } else { this.xhr.onload = dojo.lang.hitch(this, "handleOnLoad"); } } this.xhr.open("POST", (url || cometd.url), true); this.xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); dojo.debug(dojo.json.serialize(content)); this.xhr.send(dojo.io.argsFromMap(content, "utf8")); }; this.processBacklog = function () { while (this.backlog.length > 0) { this.sendMessage(this.backlog.shift(), true); } }; this.sendMessage = function (message, bypassBacklog) { if ((bypassBacklog) || (this.connected)) { message.connectionId = this.connectionId; message.clientId = cometd.clientId; var bindArgs = {url:cometd.url || djConfig["cometdRoot"], method:"POST", mimetype:"text/json", content:{message:dojo.json.serialize([message])}}; return dojo.io.bind(bindArgs); } else { this.backlog.push(message); } }; this.startup = function (handshakeData) { dojo.debugShallow(handshakeData); if (this.connected) { return; } this.tunnelInit(); };};cometd.longPollTransport = new function () { this.connected = false; this.connectionId = null; this.authToken = null; this.lastTimestamp = null; this.lastId = null; this.backlog = []; this.check = function (types, version, xdomain) { return ((!xdomain) && (dojo.lang.inArray(types, "long-polling"))); }; this.tunnelInit = function () { if (this.connected) { return; } this.openTunnelWith({message:dojo.json.serialize([{channel:"/meta/connect", clientId:cometd.clientId, connectionType:"long-polling"}])}); this.connected = true; }; this.tunnelCollapse = function () { if (!this.connected) { this.connected = false; dojo.debug("clientId:", cometd.clientId); this.openTunnelWith({message:dojo.json.serialize([{channel:"/meta/reconnect", connectionType:"long-polling", clientId:cometd.clientId, connectionId:this.connectionId, timestamp:this.lastTimestamp, id:this.lastId}])}); } }; this.deliver = cometd.iframeTransport.deliver; this.openTunnelWith = function (content, url) { dojo.io.bind({url:(url || cometd.url), method:"post", content:content, mimetype:"text/json", load:dojo.lang.hitch(this, function (type, data, evt, args) { cometd.deliver(data); this.connected = false; this.tunnelCollapse(); }), error:function () { dojo.debug("tunnel opening failed"); }}); this.connected = true; }; this.processBacklog = function () { while (this.backlog.length > 0) { this.sendMessage(this.backlog.shift(), true); } }; this.sendMessage = function (message, bypassBacklog) { if ((bypassBacklog) || (this.connected)) { message.connectionId = this.connectionId; message.clientId = cometd.clientId; var bindArgs = {url:cometd.url || djConfig["cometdRoot"], method:"post", mimetype:"text/json", content:{message:dojo.json.serialize([message])}, load:dojo.lang.hitch(this, function (type, data, evt, args) { cometd.deliver(data); })}; return dojo.io.bind(bindArgs); } else { this.backlog.push(message); } }; this.startup = function (handshakeData) { if (this.connected) { return; } this.tunnelInit(); };};cometd.callbackPollTransport = new function () { this.connected = false; this.connectionId = null; this.authToken = null; this.lastTimestamp = null; this.lastId = null; this.backlog = []; this.check = function (types, version, xdomain) { return dojo.lang.inArray(types, "callback-polling"); }; this.tunnelInit = function () { if (this.connected) { return; } this.openTunnelWith({message:dojo.json.serialize([{channel:"/meta/connect", clientId:cometd.clientId, connectionType:"callback-polling"}])}); this.connected = true; }; this.tunnelCollapse = function () { if (!this.connected) { this.connected = false; this.openTunnelWith({message:dojo.json.serialize([{channel:"/meta/reconnect", connectionType:"long-polling", clientId:cometd.clientId, connectionId:this.connectionId, timestamp:this.lastTimestamp, id:this.lastId}])}); } }; this.deliver = cometd.iframeTransport.deliver; this.openTunnelWith = function (content, url) { var req = dojo.io.bind({url:(url || cometd.url), content:content, mimetype:"text/json", transport:"ScriptSrcTransport", jsonParamName:"jsonp", load:dojo.lang.hitch(this, function (type, data, evt, args) { cometd.deliver(data); this.connected = false; this.tunnelCollapse(); }), error:function () { dojo.debug("tunnel opening failed"); }}); this.connected = true; }; this.processBacklog = function () { while (this.backlog.length > 0) { this.sendMessage(this.backlog.shift(), true); } }; this.sendMessage = function (message, bypassBacklog) { if ((bypassBacklog) || (this.connected)) { message.connectionId = this.connectionId; message.clientId = cometd.clientId; var bindArgs = {url:cometd.url || djConfig["cometdRoot"], mimetype:"text/json", transport:"ScriptSrcTransport", jsonParamName:"jsonp", content:{message:dojo.json.serialize([message])}, load:dojo.lang.hitch(this, function (type, data, evt, args) { cometd.deliver(data); })}; return dojo.io.bind(bindArgs); } else { this.backlog.push(message); } }; this.startup = function (handshakeData) { if (this.connected) { return; } this.tunnelInit(); };};cometd.connectionTypes.register("mime-message-block", cometd.mimeReplaceTransport.check, cometd.mimeReplaceTransport);cometd.connectionTypes.register("long-polling", cometd.longPollTransport.check, cometd.longPollTransport);cometd.connectionTypes.register("callback-polling", cometd.callbackPollTransport.check, cometd.callbackPollTransport);cometd.connectionTypes.register("iframe", cometd.iframeTransport.check, cometd.iframeTransport);dojo.io.cometd = cometd;⌨️ 快捷键说明
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