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103 lines
3.0 KiB
JavaScript
103 lines
3.0 KiB
JavaScript
dojo.provide("dojox.cometd.callbackPollTransport");
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dojo.require("dojox.cometd._base");
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dojo.require("dojox.cometd.longPollTransport");
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dojo.require("dojo.io.script");
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dojox.cometd.callbackPollTransport = new function(){
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this._connectionType = "callback-polling";
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this._cometd = null;
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this.check = function(types, version, xdomain){
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// we handle x-domain!
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return (dojo.indexOf(types, "callback-polling") >= 0);
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}
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this.tunnelInit = function(){
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var message = {
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channel: "/meta/connect",
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clientId: this._cometd.clientId,
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connectionType: this._connectionType,
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id: "" + this._cometd.messageId++
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};
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message = this._cometd._extendOut(message);
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this.openTunnelWith([message]);
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}
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this.tunnelCollapse = dojox.cometd.longPollTransport.tunnelCollapse;
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this._connect = dojox.cometd.longPollTransport._connect;
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this.deliver = dojox.cometd.longPollTransport.deliver;
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this.openTunnelWith = function(content, url){
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this._cometd._polling = true;
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var script = {
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load: dojo.hitch(this, function(data){
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this._cometd._polling=false;
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this._cometd.deliver(data);
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this._cometd._backon();
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this.tunnelCollapse();
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}),
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error: dojo.hitch(this, function(err){
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this._cometd._polling = false;
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this._cometd._publishMeta("connect",false);
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this._cometd._backoff();
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this.tunnelCollapse();
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}),
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url: (url || this._cometd.url),
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content: { message: dojo.toJson(content) },
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callbackParamName: "jsonp"
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};
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var connectTimeout = this._cometd._connectTimeout();
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if(connectTimeout > 0){
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script.timeout=connectTimeout;
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}
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dojo.io.script.get(script);
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}
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this.sendMessages = function(/*array*/ messages){
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for(var i = 0; i < messages.length; i++){
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messages[i].clientId = this._cometd.clientId;
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messages[i].id = ""+this._cometd.messageId++;
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messages[i]=this._cometd._extendOut(messages[i]);
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}
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var bindArgs = {
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url: this._cometd.url || dojo.config["cometdRoot"],
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load: dojo.hitch(this._cometd, "deliver"),
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callbackParamName: "jsonp",
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content: { message: dojo.toJson( messages ) },
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error: dojo.hitch(this, function(err){
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this._cometd._publishMeta("publish",false,{messages:messages});
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}),
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timeout: this._cometd.expectedNetworkDelay
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};
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return dojo.io.script.get(bindArgs);
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}
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this.startup = function(handshakeData){
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if(this._cometd._connected){ return; }
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this.tunnelInit();
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}
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// FIXME: what is this supposed to do? ;)
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this.disconnect = dojox.cometd.longPollTransport.disconnect;
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this.disconnect = function(){
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var message = {
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channel: "/meta/disconnect",
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clientId: this._cometd.clientId,
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id: "" + this._cometd.messageId++
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};
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message = this._cometd._extendOut(message);
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dojo.io.script.get({
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url: this._cometd.url || dojo.config["cometdRoot"],
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callbackParamName: "jsonp",
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content: { message: dojo.toJson([message]) }
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});
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}
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this.cancelConnect = function(){}
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}
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dojox.cometd.connectionTypes.register("callback-polling", dojox.cometd.callbackPollTransport.check, dojox.cometd.callbackPollTransport);
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