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use crate::{
conn::AfterSend, received_body::ReceivedBodyState, Conn, Headers, KnownHeaderName, Method,
StateSet, Stopper, Version,
};
use futures_lite::io::{AsyncRead, AsyncWrite, Result};
use std::{
pin::Pin,
task::{Context, Poll},
time::Instant,
};
#[derive(Debug)]
pub struct Synthetic(Option<Vec<u8>>, usize);
impl Synthetic {
pub fn len(&self) -> Option<usize> {
self.0.as_ref().map(Vec::len)
}
pub fn is_empty(&self) -> bool {
self.0.as_ref().map_or(true, Vec::is_empty)
}
}
impl AsyncWrite for Synthetic {
fn poll_write(self: Pin<&mut Self>, _cx: &mut Context<'_>, _buf: &[u8]) -> Poll<Result<usize>> {
Poll::Ready(Ok(0))
}
fn poll_flush(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<Result<()>> {
Poll::Ready(Ok(()))
}
fn poll_close(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<Result<()>> {
Poll::Ready(Ok(()))
}
}
impl AsyncRead for Synthetic {
fn poll_read(
self: Pin<&mut Self>,
_cx: &mut Context<'_>,
buf: &mut [u8],
) -> Poll<Result<usize>> {
match &self.0 {
Some(bytes) => {
let bytes_left = bytes.len() - self.1;
let bytes_to_read = bytes_left.min(buf.len());
buf.copy_from_slice(&bytes[self.1..self.1 + bytes_to_read]);
Poll::Ready(Ok(bytes_to_read))
}
None => Poll::Ready(Ok(0)),
}
}
}
impl From<Vec<u8>> for Synthetic {
fn from(v: Vec<u8>) -> Self {
Some(v).into()
}
}
impl From<&[u8]> for Synthetic {
fn from(v: &[u8]) -> Self {
v.to_owned().into()
}
}
impl From<String> for Synthetic {
fn from(v: String) -> Self {
v.into_bytes().into()
}
}
impl From<&str> for Synthetic {
fn from(v: &str) -> Self {
v.as_bytes().into()
}
}
impl From<()> for Synthetic {
fn from(_: ()) -> Self {
Self(None, 0)
}
}
impl From<Option<Vec<u8>>> for Synthetic {
fn from(v: Option<Vec<u8>>) -> Self {
Self(v, 0)
}
}
impl Conn<Synthetic> {
pub fn new_synthetic(
method: Method,
path: impl Into<String>,
body: impl Into<Synthetic>,
) -> Self {
let transport = body.into();
let mut request_headers = Headers::new();
request_headers.insert(
KnownHeaderName::ContentLength,
transport.len().unwrap_or_default().to_string(),
);
Self {
transport,
request_headers,
response_headers: Headers::new(),
path: path.into(),
method,
status: None,
version: Version::Http1_1,
state: StateSet::new(),
response_body: None,
buffer: None,
request_body_state: ReceivedBodyState::Start,
secure: false,
stopper: Stopper::new(),
after_send: AfterSend::default(),
start_time: Instant::now(),
peer_ip: None,
}
}
pub fn replace_body(&mut self, body: impl Into<Synthetic>) {
let transport = body.into();
self.request_headers_mut().insert(
KnownHeaderName::ContentLength,
transport.len().unwrap_or_default().to_string(),
);
self.transport = transport;
self.request_body_state = ReceivedBodyState::default();
}
}