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The TCP ECHO Agent - SMTECHO

Provides the TCP echo service on port 7.

To use SMTECHO, call smtecho init(). This initialises the echo service on TCP port 7. If you set the global variable ip_portbase to some value before initialising SMTECHO, the echo port is moved by that value. For instance, if you set ip_portbase to 8000, the echo port is 8007. This lets you run the service in 'user space': on most systems you need root access to use ports below 1000.

SMTECHO Implementation

The hypertext view of SMTECHO's dialog and source code may help to understand how SMTECHO works.

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