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// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package pipes
import (
"net"
)
// NetPipe wraps net.Pipe in a signature returning an error
func NetPipe() (net.Conn, net.Conn, error) {
p1, p2 := net.Pipe()
return p1, p2, nil
}
// TCPPipe creates an in process full duplex pipe based on a localhost TCP socket
func TCPPipe() (net.Conn, net.Conn, error) {
l, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
return nil, nil, err
}
defer l.Close()
var aconn net.Conn
aerr := make(chan error, 1)
go func() {
var err error
aconn, err = l.Accept()
aerr <- err
}()
dconn, err := net.Dial("tcp", l.Addr().String())
if err != nil {
<-aerr
return nil, nil, err
}
if err := <-aerr; err != nil {
dconn.Close()
return nil, nil, err
}
return aconn, dconn, nil
}
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