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use crate::codec::SendError;
use crate::frame::{Reason, StreamId};
use bytes::Bytes;
use std::fmt;
use std::io;
/// Either an H2 reason or an I/O error
#[derive(Clone, Debug)]
pub enum Error {
Reset(StreamId, Reason, Initiator),
GoAway(Bytes, Reason, Initiator),
Io(io::ErrorKind, Option<String>),
}
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum Initiator {
User,
Library,
Remote,
}
impl Error {
pub(crate) fn is_local(&self) -> bool {
match *self {
Self::Reset(_, _, initiator) | Self::GoAway(_, _, initiator) => initiator.is_local(),
Self::Io(..) => true,
}
}
pub(crate) fn user_go_away(reason: Reason) -> Self {
Self::GoAway(Bytes::new(), reason, Initiator::User)
}
pub(crate) fn library_reset(stream_id: StreamId, reason: Reason) -> Self {
Self::Reset(stream_id, reason, Initiator::Library)
}
pub(crate) fn library_go_away(reason: Reason) -> Self {
Self::GoAway(Bytes::new(), reason, Initiator::Library)
}
pub(crate) fn library_go_away_data(reason: Reason, debug_data: impl Into<Bytes>) -> Self {
Self::GoAway(debug_data.into(), reason, Initiator::Library)
}
pub(crate) fn remote_reset(stream_id: StreamId, reason: Reason) -> Self {
Self::Reset(stream_id, reason, Initiator::Remote)
}
pub(crate) fn remote_go_away(debug_data: Bytes, reason: Reason) -> Self {
Self::GoAway(debug_data, reason, Initiator::Remote)
}
}
impl Initiator {
fn is_local(&self) -> bool {
match *self {
Self::User | Self::Library => true,
Self::Remote => false,
}
}
}
impl fmt::Display for Error {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
match *self {
Self::Reset(_, reason, _) | Self::GoAway(_, reason, _) => reason.fmt(fmt),
Self::Io(_, Some(ref inner)) => inner.fmt(fmt),
Self::Io(kind, None) => io::Error::from(kind).fmt(fmt),
}
}
}
impl From<io::ErrorKind> for Error {
fn from(src: io::ErrorKind) -> Self {
Error::Io(src, None)
}
}
impl From<io::Error> for Error {
fn from(src: io::Error) -> Self {
Error::Io(src.kind(), src.get_ref().map(|inner| inner.to_string()))
}
}
impl From<Error> for SendError {
fn from(src: Error) -> Self {
Self::Connection(src)
}
}