Type Alias NrosRmwSessionOptions 

pub type NrosRmwSessionOptions = rmw_session_options_t;

issue 0808 — session creation options; NULL means every default.

Aliased Type

#[repr(C)]
pub struct NrosRmwSessionOptions {
    pub localhost_only: u8,
    pub _reserved: [u8; 7],
    pub enclave: *const i8,
    pub properties: *const rmw_session_property_t,
    pub property_count: usize,
}

Fields

localhost_only: u8

Restrict discovery to this host. Upstream rmw_localhost_only_t, narrowed to a flag: 0 = the system default, non-zero = localhost only.

A backend that cannot restrict discovery must IGNORE this rather than fail — same contract as mode. Cyclone is the one that can honour it.

_reserved: [u8; 7]

< Reserved; must be zero.

enclave: *const i8

The security enclave this session belongs to, or NULL.

Borrowed for the duration of the call. Carried so rmw_get_node_names_with_enclaves stops being a HOLLOW grouping: the visitor’s enclave argument was structurally always NULL because nothing in this ABI accepted one (issue 0785). A backend that does not track enclaves still reports NULL, which is now a fact about the backend rather than about the seam.

properties: *const rmw_session_property_t

Backend-specific configuration properties, or NULL.

Borrowed for the duration of the call, as is every string they point at. property_count must be 0 when this is NULL, and must not exceed RMW_SESSION_MAX_PROPERTIES; a violation is RMW_RET_INVALID_ARGUMENT, not a truncation.

property_count: usize

< Number of entries in properties.