Struct MsgHdrMut

pub struct MsgHdrMut<'addr, 'bufs, 'control> { /* private fields */ }

Configuration of a recvmsg(2) system call.

This wraps msghdr on Unix and WSAMSG on Windows. Also see MsgHdr for the variant used by sendmsg(2).

Implementations

impl<'addr, 'bufs, 'control> MsgHdrMut<'addr, 'bufs, 'control>

pub fn new() -> MsgHdrMut<'addr, 'bufs, 'control>

Create a new MsgHdrMut with all empty/zero fields.

pub fn with_addr(self, addr: &'addr mut SockAddr) -> Self

Set the mutable address (name) of the message.

Corresponds to setting msg_name and msg_namelen on Unix and name and namelen on Windows.

pub fn with_buffers(self, bufs: &'bufs mut [MaybeUninitSlice<'_>]) -> Self

Set the mutable buffer(s) of the message.

Corresponds to setting msg_iov and msg_iovlen on Unix and lpBuffers and dwBufferCount on Windows.

pub fn with_control(self, buf: &'control mut [MaybeUninit<u8>]) -> Self

Set the mutable control buffer of the message.

Corresponds to setting msg_control and msg_controllen on Unix and Control on Windows.

pub fn flags(&self) -> RecvFlags

Returns the flags of the message.

pub fn control_len(&self) -> usize

Gets the length of the control buffer.

Can be used to determine how much, if any, of the control buffer was filled by recvmsg.

Corresponds to msg_controllen on Unix and Control.len on Windows.

Trait Implementations

impl<'name, 'bufs, 'control> Debug for MsgHdrMut<'name, 'bufs, 'control>

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

Formats the value using the given formatter.

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: 56 bytes