From: matz@... (Yukihiro Matsumoto) Date: 2001-11-15T15:15:52+09:00 Subject: [ruby-talk:25248] Re: Is TCPSocket thread safe? Hi, In message "[ruby-talk:25211] Is TCPSocket thread safe?" on 01/11/15, Jakub Travnik 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.