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.\" ========================================================================
.\"
.IX Title "Net::Write::Layer4 3pm"
.TH Net::Write::Layer4 3pm "2022-10-13" "perl v5.34.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
Net::Write::Layer4 \- object for a transport layer (layer 4) descriptor
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\&   use Net::Write::Layer qw(:constants);
\&   use Net::Write::Layer4;
\&
\&   my $desc = Net::Write::Layer4\->new(
\&      dst      => \*(Aq192.168.0.1\*(Aq,
\&      protocol => NW_IPPROTO_TCP,
\&      family   => NW_AF_INET,
\&   );
\&
\&   $desc\->open;
\&   $desc\->send(\*(AqG\*(Aqx666);
\&   $desc\->close;
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This is the class for creating a layer 4 descriptor.
.SH "ATTRIBUTES"
.IX Header "ATTRIBUTES"
.IP "\fBdst\fR" 4
.IX Item "dst"
The target IPv4 or IPv6 address we will send frames to.
.IP "\fBfamily\fR" 4
.IX Item "family"
Address family, see \fBNet::Write::Layer\fR \s-1CONSTANTS\s0 section.
.IP "\fBprotocol\fR" 4
.IX Item "protocol"
Transport layer protocol to use, see \fBNet::Write::Layer\fR \s-1CONSTANTS\s0 section.
.SH "METHODS"
.IX Header "METHODS"
.IP "\fBnew\fR" 4
.IX Item "new"
Object constructor. You \s-1MUST\s0 pass a valid \fBdst\fR attribute. Default values:
.Sp
protocol: \s-1NW_IPPROTO_TCP\s0
.Sp
family:   \s-1NW_AF_INET\s0
.Sp
Returns undef on error.
.IP "\fBopen\fR" 4
.IX Item "open"
Open the interface. Returns undef on error.
.IP "\fBsend\fR (scalar)" 4
.IX Item "send (scalar)"
Send raw data to the network.
.IP "\fBclose\fR" 4
.IX Item "close"
Close the descriptor.
.SH "CAVEATS"
.IX Header "CAVEATS"
Does not work at all under Win32 systems. They can't send frames at layer 4.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Net::Write::Layer
.SH "AUTHOR"
.IX Header "AUTHOR"
Patrice <GomoR> Auffret
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
Copyright (c) 2006\-2015, Patrice <GomoR> Auffret
.PP
You may distribute this module under the terms of the Artistic license.
See \s-1LICENSE\s0.Artistic file in the source distribution archive.