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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#![cfg_attr(feature = "deny-warnings", deny(warnings))]
#![warn(clippy::pedantic)]
// This is because of Encoder and Decoder structs. TODO: think about a better namings for crate and structs.
#![allow(clippy::module_name_repetitions)]
pub mod decoder;
mod decoder_instructions;
pub mod encoder;
mod encoder_instructions;
mod header_block;
pub mod huffman;
mod huffman_decode_helper;
pub mod huffman_table;
mod prefix;
mod qlog;
mod qpack_send_buf;
pub mod reader;
mod static_table;
mod stats;
mod table;
pub use decoder::QPackDecoder;
pub use encoder::QPackEncoder;
pub use stats::Stats;
type Res<T> = Result<T, Error>;
#[derive(Debug, PartialEq, PartialOrd, Ord, Eq, Clone, Copy)]
pub struct QpackSettings {
pub max_table_size_decoder: u64,
pub max_table_size_encoder: u64,
pub max_blocked_streams: u16,
}
#[derive(Clone, Debug, PartialEq, Eq)]
pub enum Error {
DecompressionFailed,
EncoderStream,
DecoderStream,
ClosedCriticalStream,
InternalError(u16),
// These are internal errors, they will be transformed into one of the above.
NeedMoreData, // Return when an input stream does not have more data that a decoder needs.(It does not mean that a stream is closed.)
HeaderLookup,
HuffmanDecompressionFailed,
ToStringFailed,
ChangeCapacity,
DynamicTableFull,
IncrementAck,
IntegerOverflow,
WrongStreamCount,
Decoding, // Decoding internal error that is not one of the above.
EncoderStreamBlocked,
Internal,
TransportError(neqo_transport::Error),
QlogError,
}
impl Error {
#[must_use]
pub fn code(&self) -> neqo_transport::AppError {
match self {
Self::DecompressionFailed => 0x200,
Self::EncoderStream => 0x201,
Self::DecoderStream => 0x202,
Self::ClosedCriticalStream => 0x104,
// These are all internal errors.
_ => 3,
}
}
/// # Errors
/// Any error is mapped to the indicated type.
fn map_error<R>(r: Result<R, Self>, err: Self) -> Result<R, Self> {
r.map_err(|e| {
if matches!(e, Self::ClosedCriticalStream) {
e
} else {
err
}
})
}
}
impl ::std::error::Error for Error {
fn source(&self) -> Option<&(dyn ::std::error::Error + 'static)> {
match self {
Self::TransportError(e) => Some(e),
_ => None,
}
}
}
impl ::std::fmt::Display for Error {
fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
write!(f, "QPACK error: {:?}", self)
}
}
impl From<neqo_transport::Error> for Error {
fn from(err: neqo_transport::Error) -> Self {
Self::TransportError(err)
}
}
impl From<::qlog::Error> for Error {
fn from(_err: ::qlog::Error) -> Self {
Self::QlogError
}
}
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