NAME

       gensio - Tool for doing gensio connections

SYNOPSIS

       gensiotool [options] io2

DESCRIPTION

       The gensiotool program allows connections to be made using gensios  It creates two gensios called io1 and
       io2.  io1 is by default the local terminal and io2 must be specified.

       By  default,  gensiotool  make  two normal gensios and establishes connections to each of them.  Any data
       that comes in on one gensio is transmitted on the other.

       For a description of how to specify a gensio, see the gensio documentation.

OPTIONS

       -i|--input io1
              By default io1 is the local terminal ( /dev/tty ) for a tty stdin, or the  program's  stdin/stdout
              for a non-tty stdin.  This lets another gensio be specified as the device to hook to io2.

       -a|--accepter
              By  default io2 makes an outgoing connection.  This modifies io2 to be a gensio accepter and waits
              for an incoming connection.  Once the connection comes in, the accepter is closed  and  operations
              proceeds as normal.

       --signature
              Serial server signature reported to the remote end.  If an accepter is specified (currently only a
              telnet RFC2217 server) the signature given is used instead of "gensiotool".

       -d|--debug
              Generate debugging output.  Specifying more than once increases the output.

       -e|--escchar char
              Specify  a  character  to  use  for  the  escape  character.  Setting it to -1 disables the escape
              character.  This can either be a decimal or hexadeximal number or ^x to set a  control  character.
              By  default it is ^\ if io1 is the default and stdin is a tty, or disabled otherwise.  See ESCAPES
              below for more details on the escape character.  Only handled on io1.

       -p|--printacc
              If -a is specified, print out all the accept addresses chosen by the program.

       -n|--extra-threads <n>
              Spawn <n> extra threads to handle gensio operations.  Useful for scalabiity with --server.

       --server
              When an accept happens, don't disable accept, but continue to accept connections, and won't  close
              if  all  the  connections  go  away..   If this is not specified, it shut down the accepter when a
              connection comes in and will terminate when that connection closes.

       --version
              Print the version number and exit.

       -h|--help
              Help output

ESCAPES

       If the escape character is received on io1, the character is not transferred and the  program  waits  for
       another  character.   If  the  other character is also the escape character, a single escape character is
       sent.  If the other character is not recognized as a valid escape, it  is  ignore  and  not  transferred.
       Upper and lower case are equivalent.

       Escape characters are:

       q      Quit the program.

       b      Send a break to io2.  Ignored if io2 does not support break.

       d      Dump serial data for io2.  Ignored if io2 is not a serial gensio.

       s      Set  the serial port (baud) rate for io2.  Ignored if io2 is not a serial gensio.  After this, the
              serial port speed must be typed, terminated by  a  new  line.   Invalid  speeds  are  ignore,  use
              escchar-d to know if you set it right.

       n, o, e
              Set the parity on io2 to none, odd, or even.  Ignored if io2 is not a serial gensio.

       5, 6, 7, 8
              Set the data size on io2 to the number of bits.  Ignored if io2 is not a serial gensio.

       1, 2   Set the number of stop bits to 1 or 2 on io2 bits.  Ignored if io2 is not a serial gensio.

       x, r, f
              Sets flow control to xonxoff, rtscts, or none.

SEE ALSO

       gensio(5)

KNOWN PROBLEMS

       None.

AUTHOR

       Corey Minyard <minyard@acm.org>

Tool for doing gensio connections                   01/02/19                                       gensiotool(1)