Chargen

The CHARGEN (character generator) service is an internet protocol defined in RFC 864. It is intended for testing and measurement purposes.

A host may connect to a server that supports the CHARGEN protocol, on either TCP or UDP port 19. Upon opening a TCP connection, the server starts sending arbitrary characters to the connecting host and continues until the hosts closes the connection. In the UDP version of the protocol, the server sends a UDP packet containing a random number (between 0 and 512) of characters every time it receives a UDP packet from the connecting host. Any data received by the server is thrown away.

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