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#![warn(missing_docs)]
#![cfg_attr(test, allow(dead_code))]
#[macro_use]
extern crate slog;
use std::fmt;
use std::net::SocketAddr;
use std::ops;
use std::time::Duration;
mod assembler;
#[doc(hidden)]
pub mod coding;
mod packet;
mod range_set;
mod spaces;
#[cfg(all(test, feature = "rustls"))]
mod tests;
mod transport_parameters;
mod varint;
pub use varint::{VarInt, VarIntBoundsExceeded};
mod timer;
pub use timer::{Timer, TimerTable, TimerTableIter, TimerTableIterMut};
mod connection;
pub use crate::connection::{ConnectionError, Event, TimerSetting, TimerUpdate};
pub mod crypto;
mod frame;
use crate::frame::Frame;
pub use crate::frame::{ApplicationClose, ConnectionClose};
mod endpoint;
pub use crate::endpoint::{ConnectError, ConnectionHandle, DatagramEvent};
mod shared;
pub use crate::shared::{
ConfigError, ConnectionEvent, ConnectionId, EcnCodepoint, EndpointConfig, EndpointEvent,
TransportConfig,
};
mod streams;
pub use crate::streams::{FinishError, ReadError, UnknownStream, WriteError};
mod transport_error;
pub use crate::transport_error::{Code as TransportErrorCode, Error as TransportError};
pub mod generic {
pub use crate::connection::Connection;
pub use crate::endpoint::Endpoint;
pub use crate::shared::{ClientConfig, ServerConfig};
}
#[cfg(feature = "rustls")]
mod rustls_impls {
use crate::{crypto, generic};
pub type Connection = generic::Connection<crypto::rustls::TlsSession>;
pub type ClientConfig = generic::ClientConfig<crypto::rustls::ClientConfig>;
pub type Endpoint = generic::Endpoint<crypto::rustls::TlsSession>;
pub type ServerConfig = generic::ServerConfig<crypto::rustls::TlsSession>;
}
#[cfg(feature = "rustls")]
pub use crate::rustls_impls::*;
const VERSION: u32 = 0xff00_0016;
#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
pub enum Side {
Client = 0,
Server = 1,
}
impl Side {
#[inline]
pub fn is_client(self) -> bool {
self == Side::Client
}
#[inline]
pub fn is_server(self) -> bool {
self == Side::Server
}
}
impl ops::Not for Side {
type Output = Side;
fn not(self) -> Side {
match self {
Side::Client => Side::Server,
Side::Server => Side::Client,
}
}
}
impl slog::Value for Side {
fn serialize(
&self,
_: &slog::Record<'_>,
key: slog::Key,
serializer: &mut dyn slog::Serializer,
) -> slog::Result {
serializer.emit_arguments(key, &format_args!("{:?}", self))
}
}
#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
pub enum Dir {
Bi = 0,
Uni = 1,
}
impl Dir {
fn iter() -> impl Iterator<Item = Self> {
[Dir::Bi, Dir::Uni].iter().cloned()
}
}
impl fmt::Display for Dir {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
use self::Dir::*;
f.pad(match *self {
Bi => "bidirectional",
Uni => "unidirectional",
})
}
}
impl slog::Value for Dir {
fn serialize(
&self,
_: &slog::Record<'_>,
key: slog::Key,
serializer: &mut dyn slog::Serializer,
) -> slog::Result {
serializer.emit_arguments(key, &format_args!("{:?}", self))
}
}
#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
pub struct StreamId(#[doc(hidden)] pub u64);
impl fmt::Display for StreamId {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let initiator = match self.initiator() {
Side::Client => "client",
Side::Server => "server",
};
let dir = match self.dir() {
Dir::Uni => "uni",
Dir::Bi => "bi",
};
write!(
f,
"{} {}directional stream {}",
initiator,
dir,
self.index()
)
}
}
impl slog::Value for StreamId {
fn serialize(
&self,
_: &slog::Record<'_>,
key: slog::Key,
serializer: &mut dyn slog::Serializer,
) -> slog::Result {
serializer.emit_arguments(key, &format_args!("{:?}", self))
}
}
impl StreamId {
pub(crate) fn new(initiator: Side, dir: Dir, index: u64) -> Self {
StreamId(index << 2 | (dir as u64) << 1 | initiator as u64)
}
pub fn initiator(self) -> Side {
if self.0 & 0x1 == 0 {
Side::Client
} else {
Side::Server
}
}
pub fn dir(self) -> Dir {
if self.0 & 0x2 == 0 {
Dir::Bi
} else {
Dir::Uni
}
}
pub fn index(self) -> u64 {
self.0 >> 2
}
}
impl coding::Codec for StreamId {
fn decode<B: bytes::Buf>(buf: &mut B) -> coding::Result<StreamId> {
VarInt::decode(buf).map(|x| StreamId(x.into_inner()))
}
fn encode<B: bytes::BufMut>(&self, buf: &mut B) {
VarInt::from_u64(self.0).unwrap().encode(buf);
}
}
#[derive(Debug)]
pub struct Transmit {
pub destination: SocketAddr,
pub ecn: Option<EcnCodepoint>,
pub contents: Box<[u8]>,
}
const LOC_CID_COUNT: u64 = 8;
const REM_CID_COUNT: u64 = 32;
const RESET_TOKEN_SIZE: usize = 16;
const MAX_CID_SIZE: usize = 20;
const MIN_INITIAL_SIZE: usize = 1200;
const MIN_MTU: u16 = 1232;
const TIMER_GRANULARITY: Duration = Duration::from_millis(1);
const MAX_STREAM_COUNT: u64 = 1 << 60;