SSLOBSIZE (JANUS DEFINE parameter)

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SSLOBSIZE is a parameter on JANUS DEFINE, which defines and sets characteristics of a Janus port. See the List of JANUS DEFINE parameters.

This parameter specifies the size of the SSL output buffer to be used on SSL ports. An SSL port is a Janus port whose definition includes an SSL parameter (:hdref refid=ssl.) setting, which indicates that communications on this port may be encrypted using Janus Network Security SSL (Secure Sockets Layer) or TLS (Transport Layer Security) support.

Before Version 6.0 of the Sirius Mods, the size of the SSL output buffer was always 256 bytes and the SSLOBSIZE parameter was not available.

There is little or no performance benefit to using large SSL output buffers, because the amount of work associated with creating an SSL output packet is almost directly proportional to the size of the packet. Typically, it is sensible to use the default SSLOBSIZE of 4096, or even to make it smaller to save on memory.

The default for SSLOBSIZE is 4096, and the minimum and maximum allowable values are 1024 and 16000, respectively.

For Model 204 to Model 204 applications, the SSLOBSIZE on each side must be less than or equal to the SSLIBSIZE (:hdref refid=sslibs.) on the other side.

SSLOBSIZE is valid for SRVSOCK, &P$WBSYB port types.

References

See: List of Janus commands | List of JANUS DEFINE parameters.