Struct coap_pkt_t

#[repr(C)]
pub struct coap_pkt_t {
    pub hdr: *mut coap_hdr_t,
    pub payload: *mut u8,
    pub snips: *mut iolist_t,
    pub payload_len: u16,
    pub options_len: u16,
    pub options: [coap_optpos_t; 16],
    pub opt_crit: [u8; 2],
    pub observe_value: u32,
}

@brief CoAP PDU parsing context structure

When this struct is used to assemble the header, @p payload is used as the write pointer and @p payload_len contains the number of free bytes left in then packet buffer pointed to by @ref coap_pkt_t::hdr

When the header was written, @p payload must not be changed, it must remain pointing to the end of the header. @p payload_len must then be set to the size of the payload that was further copied into the packet buffer, after the header.

@ref coap_pkt_t::snips can be used to attach further payload buffers without copying them into the CoAP packet buffer. If there are any, they will be attached in order after the last payload byte (or header byte) in the original CoAP packet buffer.

Fields

hdr: *mut coap_hdr_t

< pointer to raw packet

payload: *mut u8

< pointer to end of the header

snips: *mut iolist_t

< payload snips (optional)

payload_len: u16

< length of payload

options_len: u16

< length of options array

options: [coap_optpos_t; 16]

< option offset array

opt_crit: [u8; 2]

observe_value: u32

< observe value

Trait Implementations

impl Clone for coap_pkt_t

fn clone(&self) -> coap_pkt_t

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for coap_pkt_t

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for coap_pkt_t

fn default() -> Self

Returns the “default value” for a type.

impl Copy for coap_pkt_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: 88 bytes