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listener.go
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listener.go
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// Copyright 2020 - See NOTICE file for copyright holders.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package simple
import (
"net"
"github.com/pkg/errors"
wirenet "perun.network/go-perun/wire/net"
)
// Listener is a TCP Listener.
type Listener struct {
net.Listener
}
var _ wirenet.Listener = (*Listener)(nil)
// NewNetListener creates a listener reachable under the requested address.
func NewNetListener(network string, address string) (*Listener, error) {
l, err := net.Listen(network, address)
if err != nil {
return nil, errors.Wrapf(err,
"failed to create listener for '%s'", address)
}
return &Listener{Listener: l}, nil
}
// NewTCPListener is a short-hand version of NewNetListener for TCP listeners.
func NewTCPListener(address string) (*Listener, error) {
return NewNetListener("tcp", address)
}
// NewUnixListener is a short-hand version of NewNetListener for Unix listeners.
func NewUnixListener(address string) (*Listener, error) {
return NewNetListener("unix", address)
}
// Accept implements peer.Dialer.Accept().
func (l *Listener) Accept() (wirenet.Conn, error) {
conn, err := l.Listener.Accept()
if err != nil {
return nil, errors.Wrap(err, "accept failed")
}
return wirenet.NewIoConn(conn), nil
}