in.chargend - UDP or TCP character generator service daemon
FMRI stands for Fault Management Resource Identifier. It is used
to identify resources managed by the Fault Manager. See fmd(1M) and
The in.chargend service provides the server-side of the
character-generator protocol. This protocol is used for debugging and
bandwidth measurement and is available on both TCP and UDP transports,
through port 19.
The in.chargend service is an inetd(1M) smf(5)
delegated service. The in.chargend detects which transport is
requested by examining the socket it is passed by the inetd
Once a connection is established, the in.chargend
generates a stream of data. Any data received is discarded. The server
generates data until the client program terminates the connection. Note that
the data flow is limited by TCP flow control mechanisms.
The in.chargend listens for UDP datagrams. When a
datagram is received, the server generates a UDP datagram in response
containing a random number of ASCII characters (ranging from 0 to 512
characters). Any received data is ignored.
The in.chargend data consists of a pattern of 72 character
lines containing the printable, 7-bit ASCII characters. Each line is
terminated with a carriage return and a line feed character.
See attributes(5) for descriptions of the following