sctp_darn(1) [debian man page]

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)

tcpclient(1)						      General Commands Manual						      tcpclient(1)

NAME

       tcpclient - create an outgoing TCP connection

SYNOPSIS

       tcpclient [ -46hHrRdDqQv ] [ -ilocalip ] [ -plocalport ] [ -Ttimeoutconn ] [ -llocalname ] [ -ttimeoutinfo ] [ -Iinterface ] host port pro-
       gram [ arg ...  ]

DESCRIPTION

       tcpclient attempts to connect to a TCP server.  If it is successful, it runs program with the given arguments, with  descriptor	6  reading
       from the network and descriptor 7 writing to the network.

       The  server's  address is given by host and port.  host may be 0, referring to the local machine, or a dotted-decimal IP address, or a host
       name; if a host has several IP addresses, tcpclient tries each in turn.	port may be a numeric port number or a port name.

       tcpclient sets up several environment variables, as described in tcp-environ(5).

OPTIONS

       -ilocalip
	      Use localip as the IP address for the local side of the connection; quit if localip is not available.

       -plocalport
	      Use localport as the port number for the local side of the connection; quit if localport is not available.

       -Iinterface
	      Use interface as the local network interface.  This is only defined  for	IPv6  sockets  and  needed  if	you  use  link-local  IPv6
	      addresses.

       -Ttimeoutconn
	      Give up on the connection attempt after timeoutconn seconds. Default: 60.  This timeout applies to each IP address tried.

       -d     (Default.)   Delay  sending data for a fraction of a second whenever the remote host is responding slowly, to make better use of the
	      network.

       -D     Never delay sending data; enable TCP_NODELAY.  This is appropriate for interactive connections.

       -q     Quiet.  Do not print any messages.

       -Q     (Default.)  Print error messages.

       -v     Verbose.	Print all available messages.

DATA-GATHERING OPTIONS
       -h     (Default.)  Look up the remote host name for TCPREMOTEHOST.

       -H     Do not look up the remote host name; unset TCPREMOTEHOST.

       -llocalname
	      Do not look up the local host name; use localname for TCPLOCALHOST.

       -r     (Default.)  Attempt to obtain TCPREMOTEINFO from the remote host.

       -R     Do not attempt to obtain TCPREMOTEINFO from the remote host.

       -ttimeoutinfo
	      Give up on the TCPREMOTEINFO connection attempt after timeoutinfo seconds. Default: 26.

       -4     Fall back to IPv4 sockets.  This is necessary for terminally broken systems like OpenBSD which will not let IPv6 sockets connect	to
	      V4-mapped  IPv6  addresses.  Please note that this also applies to DNS lookups, so you will have to use an DNS resolver with an IPv6
	      address to connect to IPv6 systems.  Use DNSCACHEIP to set the DNS resolver IP dynamically.

       -6     Force IPv6 mode in UCSPI environment variables, even for IPv4 connections.  This will set $PROTO to TCP6 and  put  IPv4-mapped  IPv6
	      addresses in TCPLOCALIP and TCPREMOTEIP.

SEE ALSO

       date@(1), finger@(1), http@(1), mconnect(1), tcpcat(1), tcpserver(1), who@(1), tcp-environ(5)

																      tcpclient(1)