Using Out-of-Band Data

Although you probably still have many questions about out-of-band data, fret not. Some simple example programs will help illustrate the concepts more clearly than a lot of text. An explanation

will be provided as you progress through the demonstrations.

A few more basics about out-of-band I/O must be covered in the next short sections. After that is out of the way, the fun begins.

I am covering the following areas under using the out of band data:

1. Writing Out-of-Band Data
2. Reading Out-of-Band Data
3. Understanding the Signal SIGURG
4. Receiving with the SIGURG Signal
5. Sending Out-of-Band Data
6. Testing the oobrecv and oobsend Programs