UDP Servers
Client-Server architecture: basis for most distributed apps today (eg Web, telnet, ftp)
Most UDP servers are “iterative” => a single server process receives and handles incoming requests on a “well-known” port.
Can filter client requests based on incoming IP address, client IP address, incoming port address, or wild card filters
Port numbers may be reused, but packet is delivered to at most one end-point.
Queues to hold requests if server busy