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// Copyright (c) 2014 Maurice Nonnekes <maurice@codeninja.nl>
// All rights reserved.
// Package socketpair implements a simple interface to create a socket pair.
package socketpair
import (
"errors"
"net"
"os"
"syscall"
)
// New creates a socketpair of the specified network type.
//
// Known networks are "unix" and "unixgram".
func New(network string) (net.Conn, net.Conn, error) {
var spDomain, spType int
switch network {
case "unix":
spDomain, spType = syscall.AF_LOCAL, syscall.SOCK_STREAM
case "unixgram":
spDomain, spType = syscall.AF_LOCAL, syscall.SOCK_DGRAM
default:
return nil, nil, errors.New("unknown network " + network)
}
fds, err := syscall.Socketpair(spDomain, spType, 0)
if err != nil {
return nil, nil, err
}
fd1 := os.NewFile(uintptr(fds[0]), "fd1")
defer fd1.Close()
fd2 := os.NewFile(uintptr(fds[1]), "fd2")
defer fd2.Close()
sock1, err := net.FileConn(fd1)
if err != nil {
return nil, nil, err
}
sock2, err := net.FileConn(fd2)
if err != nil {
sock1.Close()
return nil, nil, err
}
return sock1, sock2, nil
}
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