Type Alias riot_sys::coap_request_cb_t

pub type coap_request_cb_t = Option<unsafe extern "C" fn(arg: *mut c_void, pkt: *mut coap_pkt_t) -> c_int>;

@brief Coap request callback descriptor

@param[in] arg Pointer to be passed as arguments to the callback @param[in] pkt The received CoAP response. Buffers point to network stack internal memory.

@returns >=0 on success @returns <0 on error

Aliased Type

enum coap_request_cb_t {
    None,
    Some(unsafe extern "C" fn(_: *mut c_void, _: *mut coap_pkt_t) -> i32),
}

Variants

None

No value.

Some(unsafe extern "C" fn(_: *mut c_void, _: *mut coap_pkt_t) -> i32)

Some value of type T.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 4 bytes

Size for each variant:

• None: 0 bytes
• Some: 4 bytes