One of the errors that is possible when creating socket in a strategy is
-438 = Could not create socket.
The users guide hints that TCP sockets are a limited resource. I could not find an upper limit documented anywhere.
What is the upper limit of the number of sockets that can be created and used by the strategies on the Groov at the same time?
Never mind, I found it:
The number of Ethernet sessions available to listen for incoming communications depends in part on the
control engine and the number of Ethernet sessions in use. (Ethernet sessions are used for a variety of
purposes, such as making connections for FTP, email, Modbus/TCP, Ethernet/IP, and so forth.)
A GRV-EPIC-PR1 can manage over 500 Ethernet sessions in total; a SNAP-PAC-S1 can manage about 100;
and a SNAP-PAC-R1 or -R1-B, about 75.