From 3381ffee1de87eab0c6254796b40bcfc19fc78ca Mon Sep 17 00:00:00 2001
From: seki <seki@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 17 Mar 2018 15:13:39 +0000
Subject: [PATCH] If host of URI is omitted, make it with IP address.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62798 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/drb/drb.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/drb/drb.rb b/lib/drb/drb.rb
index b30f28cc7c..24187dc2ee 100644
--- a/lib/drb/drb.rb
+++ b/lib/drb/drb.rb
@@ -847,7 +847,11 @@ module DRb
     def self.getservername
       host = Socket::gethostname
       begin
-        Socket::gethostbyname(host)[0]
+        Socket::getaddrinfo(host, nil,
+                                  Socket::AF_UNSPEC,
+                                  Socket::SOCK_STREAM,
+                                  0,
+                                  Socket::AI_PASSIVE)[0][3]
       rescue
         'localhost'
       end