In https://profiles.ihe.net/DEV/SDPi/#vol1_clause_sdpi_p_option_managed_discovery, the use of HTTPS is only introduced indirectly:
The default "ad hoc" approach using the [Section 2:3.23] and [Section 2:3.24] transactions, requires use of unsecured multicast messaging; however, some deployments do not support or allow this mode of discovery. The addition of a [Discovery Proxy] Actor enables a secure and non-multicast means for managing system discovery across the network.
Also, the transactions do not mention HTTPS explicitly
In https://profiles.ihe.net/DEV/SDPi/#vol1_clause_sdpi_p_option_managed_discovery, the use of HTTPS is only introduced indirectly:
The default "ad hoc" approach using the [Section 2:3.23] and [Section 2:3.24] transactions, requires use of unsecured multicast messaging; however, some deployments do not support or allow this mode of discovery. The addition of a [Discovery Proxy] Actor enables a secure and non-multicast means for managing system discovery across the network.
Also, the transactions do not mention HTTPS explicitly