Index: doc/ChangeLog-2.4.0
===================================================================
--- doc/ChangeLog-2.4.0	(revision 56928)
+++ doc/ChangeLog-2.4.0	(working copy)
@@ -1,3 +1,8 @@
+Tue Nov  29 15:07:31 2016  Mohamed Osama  <mohamed.o.alnagdy@gmail.com>
+
+	* lib/net/http/generic_request.rb: Throw ArgumentError if hostname is
+		not provided in URI
+
 Mon Nov  7 00:32:45 2016  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* test/ruby/test_optimization.rb (test_tailcall_interrupted_by_sigint):
Index: lib/net/http/generic_request.rb
===================================================================
--- lib/net/http/generic_request.rb	(revision 56928)
+++ lib/net/http/generic_request.rb	(working copy)
@@ -15,6 +15,7 @@
 
     if URI === uri_or_path then
       @uri = uri_or_path.dup
+      raise ArgumentError, "no host component for URI" unless @uri.hostname
       host = @uri.hostname.dup
       host << ":".freeze << @uri.port.to_s if @uri.port != @uri.default_port
       @path = uri_or_path.request_uri
@@ -335,4 +336,3 @@
   end
 
 end
-