RhoHttpRequest is a typed request value. rho_http_send() returns a task
resolving to RhoHttpResponse; rho_http_open_stream() resolves to a
RhoHttpBodyStream after the response head arrives. RhoSseDecoder
preserves protocol state across arbitrary byte chunks. rho_sse_connect()
exposes decoded RhoSseEvent values through the common Rho stream protocol.
Details
TLS configuration is an explicit property of RhoHttpClient and is created
in memory by nanonext::tls_config(); this package does not search the host
filesystem for certificate bundles.