When doing around 400 requests to a machine running the pound server on a local network, the client will intermittently crash after receiving ECONNRESET (socket hang up on older versions of node)
You can use the requestsPerSecond option to throttle requests and avoid this error.
Still considering this an open issue.
Also, this will cause the client to crash from time to time. process.on('error'...) doesn't seem to be able to catch it.