Connection Configuration
The connection configuration is set according to the table below:
Configuration Parameter | Value | Description/Comment |
|---|---|---|
TCP send buffer size | 8196 bytes | Minimum requirement from OPC UA |
TCP receive buffer size | 8196 bytes | Minimum requirement from OPC UA |
Max message size | 25576 bytes | - |
Number of TCP connections | 4 | One TCP connection per secure channel plus one to provide a better error message to clients when out of sessions |
Number of secure channels | 3 | One secure channel supported per session plus one more to provide a better error message to clients when out of sessions |
TCP connection lifetime | 2 min | If not attached to a secure channel the TCP connection can be overtaken after 2 minutes of inactivity |
Security token lifetime | 5 min | Minimum lifetime required |
Number of sessions | 2 | Minimum requirement of the Micro Embedded Device Server profile |
Max session timeout | 5 min | - |