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Image of Operating System Concepts
Image of Linux Kernel Development (3rd Edition)
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Image of Advanced Programming in the UNIX Environment, Second Edition (Addison-Wesley Professional Computing Series)

WSGI, GEvent and Web Sockets

Web Sockets is an emerging technology that enables bi-directional, full-duplex communications channels, over a single TCP socket. It was originally designed to be implemented in web browsers and web servers, but it can be used by any client or server application. Tests have demonstrated Web Sockets can provide a 500:1 reduction in network traffic and 3:1 reduction in latency. Web Sockets have been around in one form or another since 2009. However specifications are still not yet fully cooked. The W3C Web Applications Group is responsible for standardizing the WebSocket API. The editor of the W3C TR is Ian Hickson

Tooltips in Boonex Dolphin 7

Tooltips are implemented in the Boonex Dolphin 7 social network software but are not documented. Moreover, they are not called tooltips in Dolphin 7 nor are they implemented using the fairly common paradigm of converting the (X)HTML title attribute into a stylized tooltip as is done by the TipTip jQuery plugin and others. This post describes how they are implemented in Dolphin 7 and how they can be configured and stylized. Here is an example of a tooltip in Dolphin 7: Tooltips are implemented using JavaScript and a non-native attribute called float_info. Here is an example of this attribute being