unix2tcp 0.8.2 review

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unix2tcp is a small program to redirect all connections and traffic from a UNIX socket to a (remote) TCP/IP address. Example of us

License: GPL (GNU General Public License)
File size: 30K
Developer: Mihai Rusu
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unix2tcp is a small program to redirect all connections and traffic from a UNIX socket to a (remote) TCP/IP address.

Example of usage: I have started this project to be able to transparently move my "local" MySQL servers to whatever location I want.

Having a web-hosting server with lots of client scripts that all connect to "localhost" (ie /tmp/mysql.sock) for talking MySQL is a problem when you want to move the MySQL server on its dedicated machine.

This is how we did it: we run unix2tcp /tmp/mysql.sock remoteip remoteport so that unix2tcp will listen to /tmp/mysql.sock and tunnel any traffic to remoteip:remoteport .

There we would have run any "normal" portforwarder to forward from "remoteport" to 127.0.0.1:3306, thus beeing able to keep the grant tables in MySQL untouched (all connection would have seem to come from localhost).

I guess there can be other solutions to this problem too, but this way its the most flexible I have found yet. Another example ideea came from a user of this program. He wanted to remain anonymous so I will respect his wish.

He used unix2tcp to trick some X applications (binary release only) thinking that they are talking to the local X server but in fact they were talking to a remote X server were he forwarded the connections.

Here are some key features of "unix2tcp":
tunnels all traffic between a (remote) address/port and a local UNIX socket
does NOT use fork() (single process model)
does use O_NONBLOCK , should be no case of blocking

unix2tcp 0.8.2 keywords