Hi,

I noticed that the TCPClient uses endTime as nanoseconds but this line still compares it with currentTimeMillis
https://github.com/dnsjava/dnsjava/blob/master/src/main/java/org/xbill/DNS/TCPClient.java#L115. This essentially makes the receive timeout being ignored.

This was introduced in 629f2eb, and I don't know if there are other similar bugs in the other files that were changed.

Thanks!