I just discovered the TS API void *TSHttpSsnConnectionGet(TSHttpSsn ssnp)
This seems redundant with the TSVConnSSLConnectionGet and TSHttpSsnClientVConnGet functions. I propose removing it. If we need to keep this, we should document the API and change the signature to return TSSslConnection instead of void * Details in PR https://github.com/apache/trafficserver/pull/3644