att streams

[joost helberg]

Here at Nixdorf we are writing a protocol-stack based on streams to support
terminal-connection via networking. We map TPI to a standard-I/O interface.

One of the problems we encounter is how to tell a standard getty (using a
stdio streams-driver) that an online occurred. We don't want the getty
to fall asleep in every 'open()'-function (when using an administrator on the
same devices this causes problems).

A solution would be to introduce an 'M_ONLINE' message, indicating a
carrier of some sort (protocol dependent).

How does the world feel about this?

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