--- googlecode.com/svn/trunk/public_html/meteor.js 2008/02/02 16:53:19 40
+++ googlecode.com/svn/trunk/public_html/meteor.js 2008/11/27 00:33:21 62
@@ -27,15 +27,33 @@
pingtimer: null,
pollfreq: 3000,
port: 80,
+ pollaborted: false,
+ pollhost: null,
+ pollnum: 0,
polltimeout: 30000,
+ polltimer: null,
recvtimes: [],
+ lastrequest: null,
status: 0,
updatepollfreqtimer: null,
+ isSupportedBrowser: function() {
+ var v;
+ if (v = navigator.userAgent.match(/compatible\; MSIE\ ([0-9\.]+)\;/i)) {
+ if (parseFloat(v[1]) <= 5.5) return false;
+ } else if (v = navigator.userAgent.match(/Gecko\/([0-9]+)/i)) {
+ if (parseInt(v[1]) <= 20051015) return false;
+ } else if (v = navigator.userAgent.match(/WebKit\/([0-9\.]+)/i)) {
+ if (parseFloat(v[1]) < 400) return false;
+ }
+ return true;
+ },
+
register: function(ifr) {
ifr.p = Meteor.process;
ifr.r = Meteor.reset;
ifr.eof = Meteor.eof;
+ ifr.ch = Meteor.channelInfo;
clearTimeout(Meteor.frameloadtimer);
Meteor.setstatus(4);
Meteor.log("Frame registered");
@@ -43,18 +61,19 @@
joinChannel: function(channelname, backtrack) {
if (typeof(Meteor.channels[channelname]) != "undefined") throw "Cannot join channel "+channelname+": already subscribed";
- Meteor.channels[channelname] = {backtrack:backtrack, lastmsgreceived:0};
+ Meteor.channels[channelname] = {backtrack:backtrack};
Meteor.log("Joined channel "+channelname);
Meteor.channelcount++;
- if (Meteor.status != 0) Meteor.connect();
+ if (Meteor.status != 0 && Meteor.status != 6) Meteor.connect();
},
leaveChannel: function(channelname) {
if (typeof(Meteor.channels[channelname]) == "undefined") throw "Cannot leave channel "+channelname+": not subscribed";
delete Meteor.channels[channelname];
Meteor.log("Left channel "+channelname);
- if (Meteor.status != 0) Meteor.connect();
Meteor.channelcount--;
+ if (Meteor.channelcount && Meteor.status != 0 && Meteor.status != 6) Meteor.connect();
+ else Meteor.disconnect();
},
connect: function() {
@@ -64,9 +83,7 @@
if (!Meteor.channelcount) throw "No channels specified";
if (Meteor.status) Meteor.disconnect();
Meteor.setstatus(1);
- var now = new Date();
- var t = now.getTime();
- if (!Meteor.hostid) Meteor.hostid = t+""+Math.floor(Math.random()*1000000)
+ if (!Meteor.hostid) Meteor.hostid = Meteor.time()+""+Math.floor(Math.random()*1000000)
document.domain = Meteor.extract_xss_domain(document.domain);
if (Meteor.mode=="stream") Meteor.mode = Meteor.selectStreamTransport();
Meteor.log("Selected "+Meteor.mode+" transport");
@@ -80,13 +97,12 @@
Meteor.pingtimer = setTimeout(Meteor.pollmode, Meteor.pingtimeout);
} else {
- Meteor.loadFrame("http://"+Meteor.host+((Meteor.port==80)?"":":"+Meteor.port)+"/poll.html");
- Meteor.recvtimes[0] = t;
+ Meteor.recvtimes[0] = Meteor.time();
if (Meteor.updatepollfreqtimer) clearTimeout(Meteor.updatepollfreqtimer);
- if (Meteor.mode=='smartpoll') Meteor.updatepollfreqtimer = setInterval(Meteor.updatepollfreq, 2500);
+ if (Meteor.mode=='smartpoll') Meteor.updatepollfreqtimer = setInterval(Meteor.updatepollfreq, 10000);
if (Meteor.mode=='longpoll') Meteor.pollfreq = Meteor.minpollfreq;
+ Meteor.poll();
}
- Meteor.lastrequest = t;
},
disconnect: function() {
@@ -95,7 +111,10 @@
clearTimeout(Meteor.updatepollfreqtimer);
clearTimeout(Meteor.frameloadtimer);
if (typeof CollectGarbage == 'function') CollectGarbage();
- Meteor.setstatus(0);
+ if (Meteor.status != 6) Meteor.setstatus(0);
+ Meteor.log("Disconnected");
+ try { Meteor.frameref.parentNode.removeChild(Meteor.frameref); delete Meteor.frameref; return true; } catch(e) { }
+ try { Meteor.frameref.open(); Meteor.frameref.close(); return true; } catch(e) {}
}
},
@@ -109,17 +128,19 @@
},
getSubsUrl: function() {
- var surl = "http://" + Meteor.host + ((Meteor.port==80)?"":":"+Meteor.port) + "/push/" + Meteor.hostid + "/" + Meteor.mode;
+ var host = ((Meteor.mode=='simplepoll' || Meteor.mode=='smartpoll' || Meteor.mode=='longpoll') && Meteor.pollhost) ? Meteor.pollhost : Meteor.host;
+ var surl = "http://" + host + ((Meteor.port==80)?"":":"+Meteor.port) + "/push/" + Meteor.hostid + "/" + Meteor.mode;
for (var c in Meteor.channels) {
surl += "/"+c;
- if (Meteor.channels[c].lastmsgreceived > 0) {
+ if (typeof Meteor.channels[c].lastmsgreceived != 'undefined') {
surl += ".r"+(Meteor.channels[c].lastmsgreceived+1);
} else if (Meteor.channels[c].backtrack > 0) {
surl += ".b"+Meteor.channels[c].backtrack;
- } else if (Meteor.channels[c].backtrack < 0 || isNaN(Meteor.channels[c].backtrack)) {
+ } else if (Meteor.channels[c].backtrack != undefined) {
surl += ".h";
}
}
+ surl += "?nc="+Meteor.time();
return surl;
},
@@ -160,24 +181,25 @@
pollmode: function() {
Meteor.log("Ping timeout");
- Meteor.mode="smartpoll";
- clearTimeout(Meteor.pingtimer);
+ if (Meteor.mode != "smartpoll") {
+ Meteor.mode="smartpoll";
+ Meteor.callbacks["changemode"]("poll");
+ clearTimeout(Meteor.pingtimer);
+ Meteor.lastpingtime = false;
+ }
Meteor.connect();
- Meteor.callbacks["changemode"]("poll");
- Meteor.lastpingtime = false;
},
process: function(id, channel, data) {
if (id == -1) {
Meteor.log("Ping");
Meteor.ping();
- } else if (typeof(Meteor.channels[channel]) != "undefined" && id > Meteor.channels[channel].lastmsgreceived) {
+ } else if (typeof(Meteor.channels[channel]) != "undefined") {
Meteor.log("Message "+id+" received on channel "+channel+" (last id on channel: "+Meteor.channels[channel].lastmsgreceived+")\n"+data);
Meteor.callbacks["process"](data);
Meteor.channels[channel].lastmsgreceived = id;
if (Meteor.mode=="smartpoll") {
- var now = new Date();
- Meteor.recvtimes[Meteor.recvtimes.length] = now.getTime();
+ Meteor.recvtimes[Meteor.recvtimes.length] = Meteor.time();
while (Meteor.recvtimes.length > 5) Meteor.recvtimes.shift();
}
}
@@ -188,35 +210,40 @@
if (Meteor.pingtimer) {
clearTimeout(Meteor.pingtimer);
Meteor.pingtimer = setTimeout(Meteor.pollmode, Meteor.pingtimeout);
- var now = new Date();
- Meteor.lastpingtime = now.getTime();
+ Meteor.lastpingtime = Meteor.time();
}
Meteor.setstatus(5);
},
reset: function() {
- Meteor.log("Stream reset");
- Meteor.ping();
- Meteor.callbacks["reset"]();
- var now = new Date();
- var t = now.getTime();
- var x = Meteor.pollfreq - (t-Meteor.lastrequest);
- if (x < 10) x = 10;
- setTimeout(Meteor.connect, x);
+ if (Meteor.status != 6 && Meteor.status != 0) {
+ Meteor.log("Stream reset");
+ Meteor.ping();
+ Meteor.callbacks["reset"]();
+ var x = Meteor.pollfreq - (Meteor.time()-Meteor.lastrequest);
+ if (x < 10) x = 10;
+ setTimeout(Meteor.connect, x);
+ }
},
eof: function() {
+ Meteor.log("Received end of stream, will not reconnect");
Meteor.callbacks["eof"]();
+ Meteor.setstatus(6);
+ Meteor.disconnect();
+ },
+
+ channelInfo: function(channel, id) {
+ Meteor.channels[channel].lastmsgreceived = id;
+ Meteor.log("Received channel info for channel "+channel+": resume from "+id);
},
updatepollfreq: function() {
- var now = new Date();
- var t = now.getTime();
var avg = 0;
for (var i=1; i Meteor.minpollfreq) Meteor.pollfreq = Math.ceil(Meteor.pollfreq*0.9);
@@ -242,7 +269,7 @@
Meteor.log("Frame load timeout");
if (Meteor.frameloadtimer) clearTimeout(Meteor.frameloadtimer);
Meteor.setstatus(3);
- setTimeout(Meteor.connect, 5000);
+ Meteor.pollmode();
},
extract_xss_domain: function(old_domain) {
@@ -258,6 +285,7 @@
// 3 = Controller frame timeout, retrying.
// 4 = Controller frame loaded and ready
// 5 = Receiving data
+ // 6 = End of stream, will not reconnect
if (Meteor.status != newstatus) {
Meteor.status = newstatus;
@@ -273,6 +301,36 @@
document.getElementById("meteorlogoutput").innerHTML += logstr+"
";
}
}
+ },
+
+ poll: function() {
+ Meteor.pollaborted = 0;
+ try {
+ clearTimeout(Meteor.polltimer);
+ } catch (e) {};
+ Meteor.lastrequest = Meteor.time();
+ if (Meteor.polltimeout) Meteor.polltimer = setTimeout(Meteor.clearpoll, Meteor.polltimeout);
+ var scripttag = document.createElement("SCRIPT");
+ scripttag.type = "text/javascript";
+ scripttag.src = Meteor.getSubsUrl();
+ scripttag.id = "meteorpoll"+(++Meteor.pollnum);
+ scripttag.className = "meteorpoll";
+ document.getElementsByTagName("HEAD")[0].appendChild(scripttag);
+ },
+
+ clearpoll: function() {
+ var s = document.getElementById('meteorpoll'+Meteor.pollnum);
+ if (typeof s != 'undefined') s.parentNode.removeChild(s);
+ if (Meteor.status) {
+ var x = parent.Meteor.pollfreq - (Meteor.time()-Meteor.lastrequest);
+ if (x < 10) x = 10;
+ setTimeout(Meteor.poll, x);
+ }
+ },
+
+ time: function() {
+ var now = new Date();
+ return now.getTime();
}
}