tsunami-udp: faster than rsync

1. build
1. sudo apt-get install git gcc
2. sudo apt-get install automake autoconf
3. git clone git://github.com/rriley/tsunami-udp.git
4. cd tsunami-udp
5. ./recompile.sh
6. sudo make install
2. run
1. you'll need a port open to allow direct connection from client to server
1. unfortunately, this doesn't work through NAT firewalls alone
2. firewall / port forwarding
1. to server, TCP, 46224 by default
2. to client, UDP, 46224 by default
2. start up server
1. tsunamid myfile.gz
3. connect with client
1. tsunami set rate 5M connect myserver.domain.com get myfile.gz
2. it will flood your connection if you dont set rate properly
3. documentation
1. http://tsunami-udp.cvs.sourceforge.net/viewvc/tsunami-udp/docs/USAGE.txt
2. splits files automatically
3. allows wildcards when running server and client commands, "*", namely
1. client will auto-find all files served, one after the next
2. use forward-slash, i.e. get \*, for client command 
1. so bash doesn't intrepret the asterisk
4. undocumented
1. doesn't do subdirectories, better tar that up and have plenty of disk space

telnet vs netcat

1. netcat
1. prints only what is sent by the remote host
2. telnet
1. not suitable for arbitrary binary data 
1. reserves some bytes as control characters 
2. quits when its input runs out
1. you may not see what the other end sends
3. doesn't do UDP

Fix bad/wrong aclocal version during make

1. autoreconf -fi
1. updates generated configuration files

This was necessary when building tsunami-udp from cvs repository, the configure files were old/incompatible.

Taken: http://stackoverflow.com/questions/8865093/should-a-configure-script-be-distributed-if-configure-ac-is-available

Check if a UDP port is open through a firewall

1. nmap -sU -p4569 remotehost