Increasing the HTTP Header Buffer Size for Kerberos

When using Kerberos, the header of the negotiate messages is large. Therefore, TIBCO recommends that you increase the HTTP Header Buffer Size for your TIBCO ActiveMatrix BPM application in TIBCO ActiveMatrixAdministrator.

TIBCO recommends that you increase the HTTP Header Buffer size to 8192 bytes. If this causes runtime errors, for example, HEAD FULL, then increase the HTTP Header Buffer size again.

In a Windows Active Directory Kerberos realm, the size of the payload reflects the access control list associated with the user principal. As this can grow large, there is not one value that is ideal for all environments. Therefore, tune the size to suit your environment.

Procedure

  1. From TIBCO ActiveMatrix Administrator, select Shared Objects > Resource Templates > HTTP Connector.
  2. From the Scope window, select Environment and, from the drop-down list, select BPMEnvironment.
  3. From the Scope Window, select Application and, from the drop-down list, select amx.bpm.app.
  4. From the right-hand pane, select httpConnector.
  5. Select the Advanced tab.
  6. In the Header Buffer Size (B) box, type the new buffer size.
    Note: The value is in bytes.