net::libnetfaq.3

视频监控网络部分的协议ddns,的模块的实现代码,请大家大胆指正.

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.\" ========================================================================
.\"
.IX Title "Net::libnetFAQ 3"
.TH Net::libnetFAQ 3 "2007-12-18" "perl v5.10.0" "Perl Programmers Reference Guide"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH "NAME"
libnetFAQ \- libnet Frequently Asked Questions
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
.Sh "Where to get this document"
.IX Subsection "Where to get this document"
This document is distributed with the libnet distribution, and is also
available on the libnet web page at
.PP
.Vb 1
\&    http://search.cpan.org/~gbarr/libnet/
.Ve
.Sh "How to contribute to this document"
.IX Subsection "How to contribute to this document"
You may mail corrections, additions, and suggestions to me
[e-mail].
.SH "Author and Copyright Information"
.IX Header "Author and Copyright Information"
Copyright (c) 1997\-1998 Graham Barr. All rights reserved.
This document is free; you can redistribute it and/or modify it
under the terms of the Artistic License.
.Sh "Disclaimer"
.IX Subsection "Disclaimer"
This information is offered in good faith and in the hope that it may
be of use, but is not guaranteed to be correct, up to date, or suitable
for any particular purpose whatsoever.  The authors accept no liability
in respect of this information or its use.
.SH "Obtaining and installing libnet"
.IX Header "Obtaining and installing libnet"
.Sh "What is libnet ?"
.IX Subsection "What is libnet ?"
libnet is a collection of perl5 modules which all related to network
programming. The majority of the modules available provided the
client side of popular server-client protocols that are used in
the internet community.
.Sh "Which version of perl do I need ?"
.IX Subsection "Which version of perl do I need ?"
libnet has been know to work with versions of perl from 5.002 onwards. However
if your release of perl is prior to perl5.004 then you will need to
obtain and install the \s-1IO\s0 distribution from \s-1CPAN\s0. If you have perl5.004
or later then you will have the \s-1IO\s0 modules in your installation already,
but \s-1CPAN\s0 may contain updates.
.Sh "What other modules do I need ?"
.IX Subsection "What other modules do I need ?"
The only modules you will need installed are the modules from the \s-1IO\s0
distribution. If you have perl5.004 or later you will already have
these modules.
.Sh "What machines support libnet ?"
.IX Subsection "What machines support libnet ?"
libnet itself is an entirely perl-code distribution so it should work
on any machine that perl runs on. However \s-1IO\s0 may not work
with some machines and earlier releases of perl. But this
should not be the case with perl version 5.004 or later.
.Sh "Where can I get the latest libnet release"
.IX Subsection "Where can I get the latest libnet release"
The latest libnet release is always on \s-1CPAN\s0, you will find it
in
.PP
.Vb 1
\& http://www.cpan.org/modules/by\-module/Net/
.Ve
.PP
The latest release and information is also available on the libnet web page
at
.PP
.Vb 1
\& http://search.cpan.org/~gbarr/libnet/
.Ve
.SH "Using Net::FTP"
.IX Header "Using Net::FTP"
.Sh "How do I download files from an \s-1FTP\s0 server ?"
.IX Subsection "How do I download files from an FTP server ?"
An example taken from an article posted to comp.lang.perl.misc
.PP
.Vb 1
\&    #!/your/path/to/perl
\&
\&    # a module making life easier
\&
\&    use Net::FTP;
\&
\&    # for debugging: $ftp = Net::FTP\->new(\*(Aqsite\*(Aq,\*(AqDebug\*(Aq,10);