VA Smalltalk uses a singleton instance of SciSslBlockingDispatcher to perform function calls to the underlying OpenSSL API calls on behalf of the SciSslSocketInterface classes. Directly accessing this singleton is not necessary but is mentioned here for completeness.

All instance methods for SciSslBlockingDispatcher are defined in the SciSslOpenSSLInterface subapplication. These methods wrap the underlying OpenSSL API call and start with the selector #call*. For example, the SciSslSocket>>#sslAccept method calls on #callSSL_acceptWith: to perform the actual operation.