sctp_darn

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 re-
       mote_port] -l|s

DESCRIPTION
       This is a userspace test application for the SCTP Linux  kernel  refer-
       ence  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 argu-
              ment 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 in-
              cremented 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 mes-
              sages 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)