Can't use pipes. But I'd like to if I can.

door/help_test.go

@@ -8,13 +8,14 @@ import (
 
 // helper routines - to help with testing.
 
-func setupSockets() (server net.Conn, client net.Conn) {
+// Using pipes causes failures.
+func Possible_setupSockets() (server net.Conn, client net.Conn) {
 	// the better way to set up connections.
 	return net.Pipe()
 }
 
 // setupSockets: return server and client (that's connected to server)
-func Old_setupSockets() (server net.Conn, client net.Conn) {
+func setupSockets() (server net.Conn, client net.Conn) {
 	// establish network socket connection to set Comm_handle
 	var err error
 	var sock net.Listener