Message Compression

Information

The XML protocol used for communication between client and server contains a lot of redundant information. Therefore, depending on customizing and data volume, messages can be of a size that may lead to performance losses, especially if the network bandwidth is low.
In order to counteract this, compression may be used.
In order for this to work, both client and server have to be configured accordingly.

Configuration

The server is configured via the ENABLE_COMPRESSION and COMPRESSION_LEVEL parameters in the planta_server.conf file.
The client is configured via the compressed and compress_level client parameters.
The compression can be configured individually for client and server. Data compression is only activated if message compression is set for both server and client.
- If compression is activated for the server, the server can be used with different clients (i.e. activated as well as deactivated compression).
In standard, compression is activated for both components, using the default compression ratio (6).

Notes

In order to be able to use message compression, a server version ≥ S 39.5.2 as well as a client version ≥ C 39.5.5 must be used.
For a compressing VPN tunnel, no advantage is to be expected from message compression.
- If, contrary to expectations, performance losses do occur due to the use of compression, it can be turned off for single clients.