Ruida driver silently ignores IOException

[jnweiger]

@kkaempf this is odd:

• disconnect laser.
• send a job. It takes susiciously long, but finally a success message appears in visicut.

Expected behaviour:

• the response timeout should be visible to the end user.

I've instrumented the code with a println when the expeton is generated https://github.com/t-oster/LibLaserCut/pull/192/files#diff-5ae64b97dafd0d2f7ce3630b6e3719f6441852673ffec02e43ba2e2a8a9a365cR1224

the println happens, but no exception. I cannot find where the IOException gets dropped.

[jnweiger]

Proably easy to reproduce with a laptop at home i.e. outside the fablab wlan...