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+
+## Patterns
+
+### Detecting connectivity
+
+#### Not-Roadshow/UAE
+
+All other internet stacks need to be started up. Checking for a lack of bsdsocket.library in memory is an easy start.
+
+#### Roadshow/UAE
+
+* Perform a DNS lookup of a known remote hostname. If that fails, your stack is likely not running.
+* Perform a single socket connection with a long-ish timeout (5 seconds is likely enough). If that fails, you're likely unconnected from the Internet.
+
 ## Gotchas
 
 ### Servers