Type Alias riot_sys::gcoap_link_encoder_t

source ·
pub type gcoap_link_encoder_t = Option<unsafe extern "C" fn(resource: *const coap_resource_t, buf: *mut c_char, maxlen: size_t, context: *mut coap_link_encoder_ctx_t) -> ssize_t>;
Expand description

@brief Handler function to write a resource link

@param[in] resource Resource for link @param[out] buf Buffer on which to write; may be null @param[in] maxlen Remaining length for @p buf @param[in] context Contextual information on what/how to write

@return count of bytes written to @p buf (or writable if @p buf is null) @return -1 on error

Aliased Type§

enum gcoap_link_encoder_t {
    None,
    Some(unsafe extern "C" fn(_: *const coap_resource_t, _: *mut u8, _: u32, _: *mut coap_link_encoder_ctx_t) -> i32),
}

Variants§

§1.0.0

None

No value.

§1.0.0

Some(unsafe extern "C" fn(_: *const coap_resource_t, _: *mut u8, _: u32, _: *mut coap_link_encoder_ctx_t) -> i32)

Some value of type T.