All,
I am building a Jboss cluster aware perl module for our legacy apps to take advantage
of JBoss clustering and failover by listening to the UDP broadcasts, to maintain a
near realtime list of available nodes.
What is the possibility of me getting the datagram spec?
If this is inappropriate for this list, I'll re-post on the user list.
I have a UDP client eavesdropping on the broadcasts (really cool!!!) but don't know
where to start with parsing these datagrams. See below.
This module will be extremely useful to people who want to plop a Jboss cluster in
their DMZ and take advantage of the cutting edge tech in Jboss, without rewriting all
of their apps.
Once perl is done, I will be doing a php port, then a c library (with appropriate
updates to the perl and php modules) If I can somehow work with this data. I could do
a regex on split arrays, but need a beginning and end for each message.
Any way of getting a spec which defines these messages, fields, and meanings?
Or alternatively, a list of libraries so I can figure it out from the source?
I am unsure of how to digest these messages.
LMK,
thx,
Neil
(slightly adjusted example from CPAN)
| #!/usr/bin/perl -w
| # client
|
| use strict;
| use IO::Socket::Multicast;
| use IO::Socket::INET;
| use constant GROUP => '228.3.2.1';
| use constant PORT => '45566';
|
| my $sock = IO::Socket::Multicast->new(Proto=>'udp',LocalPort=>PORT);
| $sock->mcast_add(GROUP) || die "Couldn't set group: $!\n";
|
| while (1) {
| my $data;
| next unless $sock->recv($data,1024);
| print $data;
| }
|
|
To me it looks like a fixed width with some control characters.
Sample from raw print:
VT102UDPDefaultPartitionNAKACK
|
0220ÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂwRÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI2161.161.73.50:1099STABLEr[Lorg.jgroups.Address;
fÃÂÃÂÃÂÃÂQqÃÂÃÂÃÂÃÂMxpsrrg.jgroups.stack.IpAddressÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ5a0F
|
xpwÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI%161.161.73.37:1099xsq~wÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI2161.161.73.50:1099xwz
|
| UDPDefaultPartitionNAKACK
|
0220ÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂwRÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI%161.161.73.37:1099STABLEr[Lorg.jgroups.Address;
fÃÂÃÂÃÂÃÂQqÃÂÃÂÃÂÃÂMxpsrrg.jgroups.stack.IpAddressÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ5a0F
|
xpwÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI%161.161.73.37:1099xsq~wÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI2161.161.73.50:1099xwzÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ
| VT102VT102
|
pwUDPDefaultPartition0220ÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂwRÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI%161.161.73.37:1099STABLEr[Lorg.jgroups.Address;
fÃÂÃÂÃÂÃÂQqÃÂÃÂÃÂÃÂMxpsrrg.jgroups.stack.IpAddressÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ5a0F
|
xpwÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI%161.161.73.37:1099xsq~wÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI2161.161.73.50:1099xwz
|
|
pwUDPDefaultPartition0220ÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂwRÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI2161.161.73.50:1099STABLEr[Lorg.jgroups.Address;
fÃÂÃÂÃÂÃÂQqÃÂÃÂÃÂÃÂMxpsrrg.jgroups.stack.IpAddressÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ5a0F
|
xpwÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI%16VT102VT102VT102VT102VT1021.161.73.37:1099xsq~wÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI2161.161.73.50:1099xwzÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ
|
|
pwUDPDefaultPartition0220ÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂwRÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI2161.161.73.50:1099STABLEr[Lorg.jgroups.Address;
fÃÂÃÂÃÂÃÂQqÃÂÃÂÃÂÃÂMxpsrrg.jgroups.stack.IpAddressÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ5a0F
|
xpwÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI%161.161.73.37:1099xsq~wÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI2161.161.73.50UDPDefaultPartitionVT102VT102VT102VT102VT102NAKACK0220ÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂwRÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI2161.161.73.50:1099STABLEr[Lorg.jgroups.Address;
fÃÂÃÂÃÂÃÂQqÃÂÃÂÃÂÃÂMxpsrrg.jgroups.stack.IpAddressÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ5a0F
|
xpwÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI%161.161.73.37:1099xsq~wÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI2161.161.73.50:1099xwz
UDPDefaultPartitionNAKACK0220ÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂwRÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI%161.161.73.37:1099STABLEr[Lorg.jgroups.Address;
fÃÂÃÂÃÂÃÂQqÃÂÃÂÃÂÃÂMxpsrrg.jgroups.stack.IpAddressÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ5a0F
|
xpwÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI%161.161.73.37:1099xsq~wÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI2161.161.73.50:1099xwzÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ
|
pwUDPDefaultPartition0220ÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂwRÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI%161.161.73.37:1099STABLEr[Lorg.jgroups.Address;
fÃÂÃÂÃÂÃÂQVT102VT102VT102VT102qÃÂÃÂÃÂÃÂMxpsrrg.jgroups.stack.IpAddressÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ5a0F
|
xpwÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI%161.161.73.37:1099xspwUDPDefaultPartition0220ÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂwRÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI2161.161.73.50:1099STABLEr[Lorg.jgroups.Address;7:109fÃÂÃÂÃÂÃÂQqÃÂÃÂÃÂÃÂMxpsrrg.jgroups.stack.IpAddressÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ5a0F
|
xpwÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI%161.161.73.37:1099xsq~wÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI2161.161.73.50pwUDPDefaultPartitVT102VT102VT102VT102VT102VT102VT102VT102ion0220ÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂwPÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂI%161.161.73.37:1099PING
|
Are these objects or text messages?
thx,
Neil
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