Struct TcpIoWrapper 

pub struct TcpIoWrapper {
    pub local_port: u16,
    buffer: Vec<u8>,
    pos: usize,
    retry_write: bool,
}

Fields

local_port: u16

buffer: Vec<u8>

pos: usize

buffer の読み出し済み位置。

【2026-08-05】以前は読むたびに buffer.drain(0..len) していた。 TLS はレコードヘッダ 5 バイトのように小さく読むので、 そのたびに残り全体を前へ詰め直すことになり O(n²) だった。

一斉計測で受信ループの内訳を割ったところ、

受信待ち=40968/16661
  受信sleep=8102/5191   recv呼出=233/6684

sleep でも recv でもない残り 32633 tick がここだった。 位置を持てば詰め直しが要らない。

retry_write: bool

Implementations

impl TcpIoWrapper

pub fn new(local_port: u16) -> Self

pub fn new_with_retry_write(local_port: u16) -> Self

Trait Implementations

impl ErrorType for TcpIoWrapper

type Error = ErrorKind

Error type of all the IO operations on this type.

impl Read for TcpIoWrapper

fn read(&mut self, buf: &mut [u8]) -> Result<usize, Self::Error>

Read some bytes from this source into the specified buffer, returning how many bytes were read.

fn read_exact( &mut self, buf: &mut [u8], ) -> Result<(), ReadExactError<Self::Error>>

Read the exact number of bytes required to fill buf.

impl Write for TcpIoWrapper

fn write(&mut self, buf: &[u8]) -> Result<usize, Self::Error>

Write a buffer into this writer, returning how many bytes were written.

fn flush(&mut self) -> Result<(), Self::Error>

Flush this output stream, blocking until all intermediately buffered contents reach their destination.

fn write_all(&mut self, buf: &[u8]) -> Result<(), Self::Error>

Write an entire buffer into this writer.

fn write_fmt( &mut self, fmt: Arguments<'_>, ) -> Result<(), WriteFmtError<Self::Error>>

Write a formatted string into this writer, returning any error encountered.