Ajax long connect using server heart beat to check client connect if it is closed

Using a trick HTTP response header

HTTP/1.1 200 OK
Server: xxx
Beat: Waiting.................................... // trick
Connection:Close
Content-length:255
Content-type:text/xml
Date:Wed Apr 20 12:01:17 EST 2011
Expires:Sun, 24 Apr 1981 01:29:32 GMT

Void Google Chrome pointer spinning for long Ajax connection

Put the request in a timer, or link, never directly put in page onload event

function onload() {

setTimeout(function() { // start ajax long connection in another thread to avoid google Chrome pointer spinning

doLongAjaxCallLoop ();

}, 3000);

}

google data and blogger api

http://code.google.com/apis/gdata/docs/2.0/reference.html#Queries
http://code.google.com/apis/blogger/docs/1.0/developers_guide_js.html

http://itcoding.blogspot.com/feeds/posts/default?alt=json-in-script&category=mobile

Stanford Javascript Crypto Library

SJCL is secure. It uses the industry-standard AES algorithm at 128, 192 or 256 bits; the SHA256 hash function; the HMAC authentication code; the PBKDF2 password strengthener; and the CCM and OCB authenticated-encryption modes.

http://crypto.stanford.edu/sjcl/
https://github.com/bitwiseshiftleft/sjcl/tree/master/browserTest
http://bitwiseshiftleft.github.com/sjcl/demo/