Provided by: ucspi-tcp_0.88-3_i386 bug

NAME

       tcpclient - creates an outgoing TCP connection.

SYNOPSIS

       tcpclient [ opts ] host port prog

DESCRIPTION

       opts  is a series of getopt-style options.  host is one argument.  port
       is one argument.  prog consists of one or more arguments.

       tcpclient attempts to connect to a TCP server. If it is successful,  it
       runs  prog, with descriptor 6 reading from the network and descriptor 7
       writing to the network. It also sets up several  environment  variables
       (see tcp-environ(5) ).

       The  server's  address  is  given by host and port.  port may be a name
       from /etc/services or a number.  host may be 0, referring to the  local
       machine,  or  a  dotted-decimal  IP  address, or a host name; it is fed
       through qualification using dns_ip4_qualify.

       If the server has several IP addresses, tcpclient tries each address in
       turn.

OPTIONS

       General options:

       -q     Quiet. Do not print error messages.

       -Q     (Default.) Print error messages.

       -v     Verbose. Print error messages and status messages.

       Connection options:

       -T x+y Give  up  on  the connection attempt after x+y seconds. Default:
              2+58. When a host has several IP addresses, tcpclient  tries  to
              connect  to  the  first  IP  address,  waits x seconds, tries to
              connect to the second IP address, waits x seconds, etc.; then it
              retries  each  address  that  timed  out,  waiting y seconds per
              address. You may omit +y to skip the second try. Before  version
              0.88, tcpclient(1) will use only x (default: 60).

       -i localip
              Use  localip  as  the  IP  address  for  the  local  side of the
              connection; quit if localip is not available. Normally tcpclient
              lets the operating system choose an address.

       -p localport
              Use  localport  as  the  TCP  port  for  the  local  side of the
              connection;  quit  if  localport  is  not  available.   Normally
              tcpclient lets the operating system choose a port.

       -d     Delay  sending  data  for  a  fraction  of a second whenever the
              remote host is responding slowly. This is currently the default,
              but  it  may  not  be  in  the  future;  if  you want it, set it
              explicitly.

       -D     Never delay sending data; enable TCP_NODELAY.

       Data-gathering options:

       -h     (Default.) Look up the remote  host  name  in  DNS  to  set  the
              environment variable $TCPREMOTEHOST.

       -H     Do  not  look  up  the  remote  host  name  in  DNS;  remove the
              environment variable $TCPREMOTEHOST.

       -l localname
              Do not look up the local host name in DNS; use localname for the
              environment   variable   $TCPLOCALHOST.   A  common  choice  for
              localname is 0.

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

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

       -t n   Give  up  on  the  $TCPREMOTEINFO  connection  attempt  after  n
              seconds. Default: 26.

SEE ALSO

       tcpserver(1),  tcprules(1),  tcprulescheck(1),  argv0(1),   fixcrio(1),
       recordio(1),  rblsmtpd(1),  who@(1),  date@(1),  finger@(1),  http@(1),
       tcpcat(1), mconnect(1), tcp-environ(5)

       http://cr.yp.to/ucspi-tcp.html

                                                                  tcpclient(1)