Struct SendZc 

pub struct SendZc<'a> { /* private fields */ }

Send a zerocopy message on a socket, equivalent to send(2).

When dest_addr is non-zero it points to the address of the target with dest_addr_len specifying its size, turning the request into a sendto(2)

A fixed (pre-mapped) buffer can optionally be used from pre-mapped buffers that have been previously registered with Submitter::register_buffers.

This operation might result in two completion queue entries. See the IORING_OP_SEND_ZC section at io_uring_enter for the exact semantics. Notifications posted by this operation can be checked with notif.

Implementations

impl<'a> SendZc<'a>

pub const CODE: u8

pub fn new(entry: &'a mut Entry) -> Self

pub fn with(entry: &'a mut Entry, fd: impl UseFixed) -> Self

pub fn ioprio(self, ioprio: u16) -> Self

pub fn flags(self, flags: i32) -> Self

impl<'a> SendZc<'a>

pub fn buffer(self, buf: *const u8, len: u32) -> Self

pub fn buf_index(self, idx: u16) -> Self

The buf_index is an index into an array of fixed buffers, and is only valid if fixed buffers were registered.

The buf and len arguments must fall within a region specified by buf_index in the previously registered buffer. The buffer need not be aligned with the start of the registered buffer.

pub fn dest_addr(self, addr: *const sockaddr, len: socklen_t) -> Self

Set the destination address, for sending from an unconnected socket.

When set, dest_addr_len must be set as well. See also man 3 io_uring_prep_send_set_addr.