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#[derive(Debug)]
pub enum Error {
/// A request used the CONNECT method.
ConnectUnsupported,
/// A field contained invalid Unicode.
CharacterEncoding(std::string::FromUtf8Error),
/// A field contained an integer value that was out of range.
IntRange(std::num::TryFromIntError),
/// The mode of the message was invalid.
InvalidMode,
/// An IO error.
Io(std::io::Error),
/// A field or line was missing a necessary character.
Missing(u8),
/// A URL was missing a key component.
MissingUrlComponent,
/// An obs-fold line was the first line of a field section.
ObsFold,
/// A field contained a non-integer value.
ParseInt(std::num::ParseIntError),
/// A field was truncated.
Truncated,
/// A message included the Upgrade field.
UpgradeUnsupported,
/// A URL could not be parsed into components.
UrlParse(url::ParseError),
}
macro_rules! forward_errors {
{$($(#[$a:meta])* $t:path => $v:ident),* $(,)?} => {
$(
impl From<$t> for Error {
fn from(e: $t) -> Self {
Self::$v(e)
}
}
)*
impl std::error::Error for Error {
fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
match self {
$( $(#[$a])* Self::$v(e) => Some(e), )*
_ => None,
}
}
}
};
}
forward_errors! {
std::io::Error => Io,
std::string::FromUtf8Error => CharacterEncoding,
std::num::ParseIntError => ParseInt,
std::num::TryFromIntError => IntRange,
url::ParseError => UrlParse,
}
impl std::fmt::Display for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> Result<(), std::fmt::Error> {
write!(f, "{:?}", self)
}
}
#[cfg(any(
feature = "read-http",
feature = "write-http",
feature = "read-bhttp",
feature = "write-bhttp"
))]
pub type Res<T> = Result<T, Error>;
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