Look for lines containing Host Name, Service Name, and Network Type.
These are Progress sockets startup parameters.
Host Name and Service Name should always be present.
For example:
1:50:04 BROKER 0: Host Name (-H): oplusaix3. (4261)
11:50:04 BROKER 0: Service Name (-S): pro91d. (4262)
11:50:04 BROKER 0: Network Type (-N): tcp. (4263)