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// Copyright 2010 The Go Authors.  All rights reserved.

// Use of this source code is governed by a BSD-style

// license that can be found in the LICENSE file.

package net

import (

        "errors"

        "io"

        "time"

)

// Pipe creates a synchronous, in-memory, full duplex

// network connection; both ends implement the Conn interface.

// Reads on one end are matched with writes on the other,

// copying data directly between the two; there is no internal

// buffering.

func Pipe() (Conn, Conn) {

        r1, w1 := io.Pipe()

        r2, w2 := io.Pipe()

        return &pipe{r1, w2}, &pipe{r2, w1}

}

type pipe struct {

        *io.PipeReader

        *io.PipeWriter

}

type pipeAddr int

func (pipeAddr) Network() string {

        return "pipe"

}

func (pipeAddr) String() string {

        return "pipe"

}

func (p *pipe) Close() error {

        err := p.PipeReader.Close()

        err1 := p.PipeWriter.Close()

        if err == nil {

                err = err1

        }

        return err

}

func (p *pipe) LocalAddr() Addr {

        return pipeAddr(0)

}

func (p *pipe) RemoteAddr() Addr {

        return pipeAddr(0)

}

func (p *pipe) SetDeadline(t time.Time) error {

        return errors.New("net.Pipe does not support deadlines")

}

func (p *pipe) SetReadDeadline(t time.Time) error {

        return errors.New("net.Pipe does not support deadlines")

}

func (p *pipe) SetWriteDeadline(t time.Time) error {

        return errors.New("net.Pipe does not support deadlines")

}