set 'duplicate-packets 0' in server command always upload failed

[jinxsong]

when I start the server using this command 'tftpd -p 8888 -d /tmp/tftp --overwrite --duplicate-packets 0'

but client upload the file always 'Transfer timed out.'

the Version: tftpd v0.2.8

[Altuğ Bakan]

Thanks for catching this, I will try to implement a testing suite for the server so that these bugs can be easily caught in the future.

[Altuğ Bakan]

Fixed with #11