Address resolution¶

The driver auto-detects new nodes when they are added to the cluster by means of server-side push notifications and checking the system tables.

For each node, the address the driver receives the address set as rpc_address in the node’s cassandra.yaml file (or broadcast_rpc_address when defined). In most cases, this is the correct value, however, sometimes the addresses received in this manner are either not reachable directly by the driver or are not the preferred address to use. A common such scenario is a multi-datacenter deployment with a client connecting using the private IP address to the local datacenter (to reduce network costs) and the public IP address for the remote datacenter nodes.

namespace Cassandra
{
    public interface IAddressTranslator
    {
        IPEndPoint Translate(IPEndPoint address);
    }
}

var cluster = Cluster.Builder()
    .AddContactPoint("1.2.3.4")
    .WithAddressTranslator(new MyAddressTranslator())
    .Build();