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General Introduction
********************

   This file documents the networking features in GNU Awk (`gawk')
version 3.1 and later.

Preface
About this document.
Introduction
About networkiing.
Using Networking
Some examples.
Some Applications and Techniques
More extended examples.
Links
Where to find the stuff mentioned in this
document.
GNU Free Documentation License
The license for this document.
Index
The index.
Stream Communications
Sending data streams.
Datagram Communications
Sending self-contained messages.
The TCP/IP Protocols
How these models work in the Internet.
Basic Protocols
The basic protocols.
Ports
The idea behind ports.
Making Connections
Making TCP/IP connections.
Gawk Special Files
How to do `gawk' networking.
Special File Fields
The fields in the special file name.
Comparing Protocols
Differences between the protocols.
File /inet/tcp
The TCP special file.
File /inet/udp
The UDB special file.
File /inet/raw
The RAW special file.
TCP Connecting
Making a TCP connection.
Troubleshooting
Troubleshooting TCP/IP connections.
Interacting
Interacting with a service.
Setting Up
Setting up a service.
Email
Reading email.
Web page
Reading a Web page.
Primitive Service
A primitive Web service.
Interacting Service
A Web service with interaction.
CGI Lib
A simple CGI library.
Simple Server
A simple Web server.
Caveats
Network programming caveats.
Challenges
Where to go from here.
PANIC
An Emergency Web Server.
GETURL
Retrieving Web Pages.
REMCONF
Remote Configuration Of Embedded Systems.
URLCHK
Look For Changed Web Pages.
WEBGRAB
Extract Links From A Page.
STATIST
Graphing A Statistical Distribution.
MAZE
Walking Through A Maze In Virtual Reality.
MOBAGWHO
A Simple Mobile Agent.
STOXPRED
Stock Market Prediction As A Service.
PROTBASE
Searching Through A Protein Database.

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