Hi,

In message "[ruby-talk:25211] Is TCPSocket thread safe?"
    on 01/11/15, Jakub Travnik <j.travnik / sh.cvut.cz> writes:

|  Does anybody know if TCPServer is thread safe?

Socket classes are Ruby-thread safe, with exception of gethostbyname()
etc.  If you need gethostbyname() thread-safe-ness, try

  require 'resolv-replace'

|And one more general question, how to determine
|thread safeness for other objects from default
|ruby libraries?

You have to check out the source.

							matz.