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/*
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 * Copyright (C) 2015 Benjamin Fry <benjaminfry@me.com>
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *     http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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//! TCP protocol related components for DNS
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mod tcp_client_stream;
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mod tcp_stream;
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pub use self::tcp_client_stream::{TcpClientConnect, TcpClientStream};
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pub use self::tcp_stream::{Connect, DnsTcpStream, TcpStream};
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#[cfg(feature = "tokio-runtime")]
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#[doc(hidden)]
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pub mod tokio {
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    use std::io;
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    use std::net::SocketAddr;
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    use tokio::net::TcpSocket as TokioTcpSocket;
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    use tokio::net::TcpStream as TokioTcpStream;
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    pub async fn connect(addr: &SocketAddr) -> Result<TokioTcpStream, io::Error> {
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        connect_with_bind(addr, &None).await
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    }
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    pub async fn connect_with_bind(
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        addr: &SocketAddr,
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        bind_addr: &Option<SocketAddr>,
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    ) -> Result<TokioTcpStream, io::Error> {
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        let stream = match bind_addr {
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            Some(bind_addr) => {
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                let socket = match bind_addr {
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                    SocketAddr::V4(_) => TokioTcpSocket::new_v4()?,
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                    SocketAddr::V6(_) => TokioTcpSocket::new_v6()?,
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                };
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                socket.bind(*bind_addr)?;
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                socket.connect(*addr).await?
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            }
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            None => TokioTcpStream::connect(addr).await?,
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        };
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        stream.set_nodelay(true)?;
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        Ok(stream)
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    }
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}