sctp_darn(1)						      General Commands Manual						      sctp_darn(1)

NAME

       sctp_darn - Send and receive messages via SCTP

SYNOPSIS

       sctp_darn -H local_address -P local_port [-h remote_host] [-p remote_port] -l|s

DESCRIPTION

       This  is a userspace test application for the SCTP Linux kernel reference implementation state machine.	It is vaguely inspired by Stevens'
       program "sock".

       It has the limited ability to send messages and to listen for messages sent via SCTP.

OPTIONS

       -H, --local local_address
	      specify one of the local addresses

       -P, --local-port local_port
	      specify the port number for local addresses

       -h, --remote remote_address
	      specify the peer address

       -p, --remote-port remote_port
	      specify the port number for the peer address

       -l, --listen
	      print messages received from the peer

       -s, --send
	      send messages to the peer

       -B, --bindx-add address
	      add the specified address(es) as additional bind addresses to the local socket. Multiple addresses can be specified by this argument
	      multiple times.  For example, '-B 10.0.0.1 -B 20.0.0.2'.

       -b, --bindx-rem address
	      remove  the  specified address(es) from the bind addresses of the local socket. Multiple addresses can be specified by this argument
	      multiple times.  For example, '-b 10.0.0.1 -b 20.0.0.2'.

       -I     use the interactive mode.

       -i     setup the specified number of endpoints by using the specified local host (-H) and local port (-P). The port number will	be  incre-
	      mented  by one for each additional endpoint.  All of these endpoints will be listening.  If a remote host (-h) and a remote port are
	      also specified, the first endpoint will start sending fixed sized messages to the remote host.

       -m size
	      specify the sockopt sndbuf/rcvbuf size.

       -n     set the socket(s) to be in the non-blocking mode.  collect messages from stdin and deliver them to the peer

       --use-poll
	      use system call poll() for polling among the number of endpoints specified by the -i option. Without this option, select() would	be
	      used as default.

       -t     use SOCK_STREAM tcp-style sockets.

       -z size
	      specify the message size to be sent.  The default message size generated would be 16K.

       --interface ifname
	      select interface for sin6_scope_id.

AUTHOR

       Michael Biebl <biebl@debian.org>

																      sctp_darn(1)