Merge pull request #463 from reist/ehostunreach

Add Errno::EHOSTUNREACH to possible CannotConnectError failures

Author: djanowski

lib/redis/client.rb

@@ -319,6 +319,8 @@ def establish_connection
       raise CannotConnectError, "Timed out connecting to Redis on #{location}"
     rescue Errno::ECONNREFUSED
       raise CannotConnectError, "Error connecting to Redis on #{location} (ECONNREFUSED)"
+    rescue Errno::EHOSTUNREACH
+      raise CannotConnectError, "Error connecting to Redis on #{location} (EHOSTUNREACH)"
     end
 
     def ensure_connected