multiple host names connection issue

When I try to initialize the connection with multiple host names, "host1 host2", it can't connect and return nil. Single host name works just fine.

Sorry to put this issue on this fork, we are using luarocks to install the package and looks like the original repo has been abandoned.

Start by reproducing connection initialization with the host list "host1 host2" and compare it with the working single-host case. Trace the C connection-handling entry point used by the Lua binding; done means multiple hosts connect successfully without regressing single-host connections.

Written by the indexing model from the issue text.