Support timeout for Addrinfo

Addrinfo.getaddrinfo and .foreach now accepts :timeout in seconds as
a keyword argument. If getaddrinfo_a(3) is available, the timeout will be
applied for name resolution. Otherwise, it will be ignored.

Socket.tcp accepts :resolv_timeout to use this feature.

1 files changed, 5 insertions, 0 deletions

diff --git a/test/socket/test_addrinfo.rb b/test/socket/test_addrinfo.rb
index a06f3eb451..2af6918caa 100644
--- a/test/socket/test_addrinfo.rb
+++ b/test/socket/test_addrinfo.rb
@@ -688,5 +688,10 @@ class TestSocketAddrinfo < Test::Unit::TestCase
       assert_equal(ai1.canonname, ai2.canonname)
     end
 
+    def test_addrinfo_timeout
+      ai = Addrinfo.getaddrinfo("localhost.localdomain", "http", Socket::PF_INET, Socket::SOCK_STREAM, timeout: 1).fetch(0)
+      assert_equal(6, ai.protocol)
+      assert_equal(80, ai.ip_port)
+    end
   end
 end