List of TCP and UDP port numbers /etc/services, a service name database file on Unix-like operating systems. This is a list of notable port numbers used by protocols of the transport layer of the Internet protocol suite for the establishment of host-to-host connectivity. Originally, port numbers were used by the Network Control Program (NCP) in the ARPANET for which two ports were required for half-duplex transmission. Later, the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) needed only one port for full-duplex, bidirectional traffic. The even-numbered ports were not used, and this resulted in some even numbers in the well-known port number range being unassigned. The Internet Assigned Numbers Authority (IANA) is responsible for maintaining the official assignments of port numbers for specific uses. However, many unofficial uses of both well-known and registered port numbers occur in practice. Table legend Official: Port is registered with IANA for the application.
Beginner's Guide to HTML5 & CSS3 - Coding Canvas Download html5canvas.zip - 5.5 KB Introduction Traditional HTML was created with text in mind. While the insertion of images can be done through the <img> tag, the inclusion of animation will require third-party plug-ins. In this respect, traditional HTML is vastly lacking in its capability to meet the multimedia needs of modern web pages. Fret not! The <canvas> acts as a bitmap-based drawing board Canvas on a web page. If you are interested in finding out how the "Bouncing on Canvas" and "Merry-Go-Round on Canvas" were created, you have certainly come to the right place. Preparing the Canvas Every artist needs a canvas to draw upon. Nothing except the heading as shown on the lower part of Figure 1. You can have multiple <canvas> elements on the same page. Let's add some inline CSS style to it so that you can verify its existence. Now you should be able to see a rectangular area displayed on the browser as shown on the lower part of Figure 2. That's it? Getting Your Feet Wet Drawing It Out