69 lines
1.5 KiB
JavaScript
69 lines
1.5 KiB
JavaScript
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//>>built
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define(["dijit","dojo","dojox","dojo/require!dojox/cometd/_base"],function(_1,_2,_3){
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_2.provide("dojox.cometd.timesync");
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_2.require("dojox.cometd._base");
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_3.cometd.timesync=new function(){
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this._window=10;
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this._lags=[];
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this._offsets=[];
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this.lag=0;
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this.offset=0;
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this.samples=0;
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this.getServerTime=function(){
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return new Date().getTime()+this.offset;
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};
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this.getServerDate=function(){
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return new Date(this.getServerTime());
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};
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this.setTimeout=function(_4,_5){
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var ts=(_5 instanceof Date)?_5.getTime():(0+_5);
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var tc=ts-this.offset;
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var _6=tc-new Date().getTime();
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if(_6<=0){
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_6=1;
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}
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return setTimeout(_4,_6);
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};
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this._in=function(_7){
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var _8=_7.channel;
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if(_8&&_8.indexOf("/meta/")==0){
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if(_7.ext&&_7.ext.timesync){
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var _9=_7.ext.timesync;
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var _a=new Date().getTime();
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var l=(_a-_9.tc-_9.p)/2-_9.a;
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var o=_9.ts-_9.tc-l;
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this._lags.push(l);
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this._offsets.push(o);
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if(this._offsets.length>this._window){
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this._offsets.shift();
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this._lags.shift();
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}
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this.samples++;
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l=0;
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o=0;
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for(var i in this._offsets){
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l+=this._lags[i];
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o+=this._offsets[i];
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}
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this.offset=parseInt((o/this._offsets.length).toFixed());
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this.lag=parseInt((l/this._lags.length).toFixed());
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}
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}
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return _7;
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};
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this._out=function(_b){
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var _c=_b.channel;
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if(_c&&_c.indexOf("/meta/")==0){
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var _d=new Date().getTime();
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if(!_b.ext){
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_b.ext={};
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}
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_b.ext.timesync={tc:_d,l:this.lag,o:this.offset};
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}
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return _b;
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};
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};
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_3.cometd._extendInList.push(_2.hitch(_3.cometd.timesync,"_in"));
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_3.cometd._extendOutList.push(_2.hitch(_3.cometd.timesync,"_out"));
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});
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