Version: 5.6
public Networking.NetworkError lastError ;

説明

The last error associated with this connection.

Retrieve the last error that occurred on the connection, this value is set every time an event is received from the NetworkTransport.

In the following example, OnServerDisconnect is overridden from NetworkManager:

public override void OnServerDisconnect(NetworkConnection conn)
{
    if (conn.lastError != NetworkError.Ok)
    {
        if (LogFilter.logError)
        {
            Debug.LogError("ServerDisconnected due to error: " + conn.lastError);
        }
    }
}