How can I validate that the streams I am sending to Swarm are being received?

The Node Status Report on the admin console as well as the SNMP MIB include multiple variables that allow you to see the read, write, info and delete activity for the cluster. By watching the stream count and "SCSP: Number of writes" variables while you are writing data to the cluster, you can see the counters increase and validate that the data is being received.