NAME

       Net::TFTPd - Perl extension for Trivial File Transfer Protocol Server

SYNOPSIS

         use strict;
         use Net::TFTPd;

         my $tftpdOBJ = Net::TFTPd->new('RootDir' => 'path/to/files')
           or die "Error creating TFTPd listener: %s", Net::TFTPd->error;

         my $tftpRQ = $tftpdOBJ->waitRQ(10)
           or die "Error waiting for TFTP request: %s", Net::TFTPd->error;

         $tftpRQ->processRQ()
           or die "Error processing TFTP request: %s", Net::TFTPd->error;

         printf "%u bytes has been transferred", $tftpRQ->getTotalBytes() || 0;

DESCRIPTION

       "Net::TFTPd" is a class implementing a simple Trivial File Transfer Protocol server in
       Perl as described in RFC1350.

       "Net::TFTPd" also supports the TFTP Option Extension (as described in RFC2347), with the
       following options:

         RFC2348 TFTP Blocksize Option
         RFC2349 TFTP Timeout Interval and Transfer Size Options

EXPORT

       None by default.

   %OPCODES
       The %OPCODES tag exports the %OPCODES hash:

         %OPCODES = (
           1       => 'RRQ',
           2       => 'WRQ',
           3       => 'DATA',
           4       => 'ACK',
           5       => 'ERROR',
           6       => 'OACK',
           'RRQ'   => 1,
           'WRQ'   => 2,
           'DATA'  => 3,
           'ACK'   => 4,
           'ERROR' => 5,
           'OACK'  => 6
         );

Listener constructor

   new()
         $listener = new Net::TFTPd( ['RootDir' => 'path/to/files' | 'FileName' => 'path/to/file'] [, OPTIONS ] );

       or

         $listener = Net::TFTPd->new( ['RootDir' => 'path/to/files' | 'FileName' => 'path/to/file'] [, OPTIONS ] );

       Create a new Net::TFTPd object where 'path/to/files' is the default path to file
       repository or 'path/to/file' is the single file allowed for download, and OPTIONS are the
       default server options.

       Valid options are:

         Option     Description                                        Default
         ------     -----------                                        -------
         LocalAddr  Interface to bind to (for multi-homed server)          any
         LocalPort  Port to bind server to                                  69
         Timeout    Timeout in seconds to wait for a request                10
         ACKtimeout Timeout in seconds to wait for an ACK packet             4
         ACKretries Maximum number of retries waiting for ACK                4
         Readable   Clients are allowed to read files                        1
         Writable   Clients are allowed to write files                       0
         BlkSize    Minimum blocksize to negotiate for transfers           512
         CallBack   Reference to code executed for each transferred block    -
         Debug      Activates debug mode (verbose)                           0
         Family     Address family IPv4/IPv6                              IPv4
                      Valid values for IPv4:
                        4, v4, ip4, ipv4, AF_INET (constant)
                      Valid values for IPv6:
                        6, v6, ip6, ipv6, AF_INET6 (constant)
         V6Only     Enable / disable v6only (see IO::Socket::IP)             1

       NOTE:  IPv6 requires IO::Socket::IP.  Failback is IO::Socket::INET and only IPv4 support.

   CallBack
       The CallBack code is called by processRQ method for each tranferred block.

       The code receives (into @_ array) a reference to internal $request object.

       Example:

         sub callback
         {
           my $req = shift;
           printf "block: %u\/%u\n", $req->{'_REQUEST_'}{'LASTACK'}, $req->{'_REQUEST_'}{'LASTBLK'};
         }

         my $tftpdOBJ = Net::TFTPd->new('RootDir' => 'c:/temp', 'Timeout' => 60, 'CallBack' => \&callback) or die Net::TFTPd->error;

Listener methods

   waitRQ()
         $request = $listener->waitRQ([Timeout]);

       Waits for a client request (RRQ or WRQ) and returns a $request object or undef if timed
       out.

       If Timeout is missing, the timeout defined for $listener object is used instead.

       When the method returns, the program should fork() and process the request invoking
       processRQ() while the parent process should re-start waiting for another request.

Request methods

   processRQ()
         $ret = $request->processRQ();

       Processes a request and returns 1 if success, undef if error.

   getFileName()
         $ret = $request->getFileName();

       Returns the requested file name.

   getMode()
         $ret = $request->getMode();

       Returns the transfer mode for the request.

   getBlkSize()
         $ret = $request->getBlkSize();

       Returns the block size used for the transfer.

   server()
         $ret = $request->server();

       Return IO::Socket::* object for the created server.  All IO::Socket::* accessors can then
       be called.

   getPeerAddr()
         $ret = $request->getPeerAddr();

       Returns the address of the requesting client.

   getPeerPort()
         $ret = $request->getPeerMode();

       Returns the port of the requesting client.

   getTotalBytes()
         $ret = $request->getTotalBytes();

       Returns the number of bytes transferred for the request.

CREDITS

       Thanks to Michael Vincent (<VINSWORLD>) for the NETASCII support, transferred bytes and
       IPv6 patches.

AUTHOR

       Luigino Masarati, <lmasarati@hotmail.com>

SEE ALSO

       Net::TFTP.