tari_comms 5.4.0-pre.2

A peer-to-peer messaging system
Documentation 
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//  Copyright 2020, The Tari Project
//
//  Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
//  following conditions are met:
//
//  1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following
//  disclaimer.
//
//  2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
//  following disclaimer in the documentation and/or other materials provided with the distribution.
//
//  3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote
//  products derived from this software without specific prior written permission.
//
//  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
//  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
//  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
//  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
//  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
//  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
//  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

use std::{borrow::Cow, io};

use thiserror::Error;
use tokio::task::JoinError;

use crate::{multiaddr::Multiaddr, socks::SocksError};

#[derive(Debug, Error)]
pub enum DnsResolverError {
    #[error("The address is empty")]
    EmptyAddress,
    #[error("Invalid address '{address}': {message}")]
    InvalidAddress {
        address: Multiaddr,
        message: Cow<'static, str>,
    },
    #[error("DNS Resolution: address '{0}' is not supported")]
    UnsupportedAddress(Multiaddr),
    #[error("DNS Resolution: Expected a TCP/IP address, got '{0}'")]
    ExpectedTcpIpAddress(Multiaddr),
    #[error("DNS Resolution: Could not connect to proxy: {0}")]
    ProxyConnectFailed(io::Error),
    #[error("SOCKS error: {0}")]
    SocksError(#[from] SocksError),
    #[error("Name resolution failed for address `{address_str}`: {source}")]
    NameResolutionFailed { address_str: String, source: io::Error },
    #[error("DNS address not found")]
    DnsAddressNotFound,
    #[error("Failed to join on blocking task: {0}")]
    BlockingJoinError(#[from] JoinError),
}