Per-origin protocol state of this runtime's native transport client, read from the transport on every call: which protocol the last request to each origin used and, when HTTP/3 was not used, why and when it is tried again. Empty before the first request. See TransportProtocolDiagnostic.
Runtime returned by createIosIgpapi.
It includes the shared mobile facades (
users,direct,media,account,run,feed, session export helpers, and others) plus the iOS-specific Bloks login wrapper.