CA API Gateway 9.1

9.4 9.1

Compress Messages to/from SecureSpan XVC Assertion

The Compress Messages to/from SecureSpan XVC assertion is used to indicate that messages going to or coming from the Securespan XML VPN Client should be compressed using the gzip algorithm. Compressing XML/SOAP messages can decrease the transfer times and improve performance, especially for large HTTP payloads.
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The
Compress Messages to/from SecureSpan XVC
assertion is used to indicate that messages going to or coming from the Securespan XML VPN Client should be compressed using the
gzip
algorithm. Compressing XML/SOAP messages can decrease the transfer times and improve performance, especially for large HTTP payloads.
Message routing will proceed as normal when compression is in effect. The Gateway will decompress the payload upon reception, then compress the response payload before returning the message to the Securespan XML VPN Client.
When compression is in effect, the Gateway uses the
uncompressed
 message size to validate against the set limit (as defined by the
io.xmlPartMaxBytes
 cluster property).
The Compress Messages to/from SecureSpan XVC assertion will always succeed, unless it is configured to fail if it receives an uncompressed request. If you do not want your Gateway to accept compressed messages, modify the
request.compress.gzip.allow
 cluster property.
Messages are compressed only when submitted by the CA API Gateway XML VPN Client, or if the service endpoint is another Gateway. For more information, see the [Request HTTP Rules] tab of the Route via HTTP(S) Assertion.
For more information, see
Configuring HTTP Compression
in the Securespan XML VPN Client documentation.
Using the Assertion
  1. Do one of the following:
    • To add the assertion to the Policy Development window, see Add an Assertion.
    • To change the configuration of an existing assertion, proceed to step 2 below.
  2. Right-click
    Compress Messages to/from SecureSpan XVC
    in the policy window and select
    Compression Properties
     or double-click the assertion in the policy window. The assertion properties are displayed.
  3. Select the check box to cause the assertion to fail if the request could not be compressed for whatever reason (this will be noted in the audit logs). Clear the check box to always have the assertion succeed.
  4. Click [
    OK
    ] when done.

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