Merge pull request #246 from tma/tma/keep-alive-fix

Ruby driver: Pass keep alive TTL/idle value correctly

Author: byroot

lib/redis_client/ruby_connection.rb

@@ -169,7 +169,7 @@ def connect
     if %i[SOL_TCP SOL_SOCKET TCP_KEEPIDLE TCP_KEEPINTVL TCP_KEEPCNT].all? { |c| Socket.const_defined? c } # Linux
       def enable_socket_keep_alive(socket)
         socket.setsockopt(Socket::SOL_SOCKET, Socket::SO_KEEPALIVE, true)
-        socket.setsockopt(Socket::SOL_TCP, Socket::TCP_KEEPIDLE, KEEP_ALIVE_INTERVAL)
+        socket.setsockopt(Socket::SOL_TCP, Socket::TCP_KEEPIDLE, KEEP_ALIVE_TTL)
         socket.setsockopt(Socket::SOL_TCP, Socket::TCP_KEEPINTVL, KEEP_ALIVE_INTERVAL)
         socket.setsockopt(Socket::SOL_TCP, Socket::TCP_KEEPCNT, KEEP_ALIVE_PROBES)
       end