an empty UDP packet.
[ruby-dev:28820]
This commit is a result of hacks at the CodeFest Akihabara 2006 hosted by FSIJ.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@10442 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
BasicSocket#recv_nonblock.
(udp_recvfrom_nonblock): renamed from ip_recvfrom_nonblock.
IPSocket#recvfrom_nonblock is moved to UDPSocket#recvfrom_nonblock.
(unix_recvfrom_nonblock): removed. UNIXSocket#is removed.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@10305 b2dd03c8-39d4-4d8f-98ff-823fe69b080e