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 con-
              nect 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 connec-
              tion; 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 connec-
              tion; 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 explic-
              environment  variable  $TCPLOCALHOST. A common choice for local-
              name 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 sec-
              onds. 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), tcp-
       cat(1), mconnect(1), tcp-environ(5)

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



                                                                  tcpclient(1)