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use rlp::DecoderError;
use network::NetworkError;
use std::fmt;
#[derive(Debug, PartialEq, Eq)]
pub enum Punishment {
None,
Disconnect,
Disable,
}
#[derive(Debug)]
pub enum Error {
Rlp(DecoderError),
Network(NetworkError),
BufferEmpty,
UnrecognizedPacket(u8),
UnexpectedHandshake,
WrongNetwork,
UnknownPeer,
UnsolicitedResponse,
NotServer,
UnsupportedProtocolVersion(u8),
BadProtocolVersion,
Overburdened,
}
impl Error {
pub fn punishment(&self) -> Punishment {
match *self {
Error::Rlp(_) => Punishment::Disable,
Error::Network(_) => Punishment::None,
Error::BufferEmpty => Punishment::Disable,
Error::UnrecognizedPacket(_) => Punishment::Disconnect,
Error::UnexpectedHandshake => Punishment::Disconnect,
Error::WrongNetwork => Punishment::Disable,
Error::UnknownPeer => Punishment::Disconnect,
Error::UnsolicitedResponse => Punishment::Disable,
Error::NotServer => Punishment::Disable,
Error::UnsupportedProtocolVersion(_) => Punishment::Disable,
Error::BadProtocolVersion => Punishment::Disable,
Error::Overburdened => Punishment::None,
}
}
}
impl From<DecoderError> for Error {
fn from(err: DecoderError) -> Self {
Error::Rlp(err)
}
}
impl From<NetworkError> for Error {
fn from(err: NetworkError) -> Self {
Error::Network(err)
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Error::Rlp(ref err) => err.fmt(f),
Error::Network(ref err) => err.fmt(f),
Error::BufferEmpty => write!(f, "Out of buffer"),
Error::UnrecognizedPacket(code) => write!(f, "Unrecognized packet: 0x{:x}", code),
Error::UnexpectedHandshake => write!(f, "Unexpected handshake"),
Error::WrongNetwork => write!(f, "Wrong network"),
Error::UnknownPeer => write!(f, "Unknown peer"),
Error::UnsolicitedResponse => write!(f, "Peer provided unsolicited data"),
Error::NotServer => write!(f, "Peer not a server."),
Error::UnsupportedProtocolVersion(pv) => write!(f, "Unsupported protocol version: {}", pv),
Error::BadProtocolVersion => write!(f, "Bad protocol version in handshake"),
Error::Overburdened => write!(f, "Peer overburdened"),
}
}
}