libgo/go/net/pipe.go

   1 // Copyright 2010 The Go Authors.  All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 package net
   6
   7 import (
   8         "errors"
   9         "io"
  10         "time"
  11 )
  12
  13 // Pipe creates a synchronous, in-memory, full duplex
  14 // network connection; both ends implement the Conn interface.
  15 // Reads on one end are matched with writes on the other,
  16 // copying data directly between the two; there is no internal
  17 // buffering.
  18 func Pipe() (Conn, Conn) {
  19         r1, w1 := io.Pipe()
  20         r2, w2 := io.Pipe()
  21
  22         return &pipe{r1, w2}, &pipe{r2, w1}
  23 }
  24
  25 type pipe struct {
  26         *io.PipeReader
  27         *io.PipeWriter
  28 }
  29
  30 type pipeAddr int
  31
  32 func (pipeAddr) Network() string {
  33         return "pipe"
  34 }
  35
  36 func (pipeAddr) String() string {
  37         return "pipe"
  38 }
  39
  40 func (p *pipe) Close() error {
  41         err := p.PipeReader.Close()
  42         err1 := p.PipeWriter.Close()
  43         if err == nil {
  44                 err = err1
  45         }
  46         return err
  47 }
  48
  49 func (p *pipe) LocalAddr() Addr {
  50         return pipeAddr(0)
  51 }
  52
  53 func (p *pipe) RemoteAddr() Addr {
  54         return pipeAddr(0)
  55 }
  56
  57 func (p *pipe) SetDeadline(t time.Time) error {
  58         return errors.New("net.Pipe does not support deadlines")
  59 }
  60
  61 func (p *pipe) SetReadDeadline(t time.Time) error {
  62         return errors.New("net.Pipe does not support deadlines")
  63 }
  64
  65 func (p *pipe) SetWriteDeadline(t time.Time) error {
  66         return errors.New("net.Pipe does not support deadlines")
  67 }