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100 lines
1.9 KiB
100 lines
1.9 KiB
// Copyright 2017 fatedier, fatedier@gmail.com
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package net
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import (
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"fmt"
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"net"
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"sync"
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"github.com/fatedier/frp/utils/errors"
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"github.com/fatedier/frp/utils/log"
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)
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type Listener interface {
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Accept() (Conn, error)
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Close() error
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log.Logger
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}
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type LogListener struct {
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l net.Listener
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net.Listener
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log.Logger
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}
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func WrapLogListener(l net.Listener) Listener {
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return &LogListener{
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l: l,
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Listener: l,
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Logger: log.NewPrefixLogger(""),
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}
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}
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func (logL *LogListener) Accept() (Conn, error) {
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c, err := logL.l.Accept()
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return WrapConn(c), err
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}
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// Custom listener
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type CustomListener struct {
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conns chan Conn
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closed bool
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mu sync.Mutex
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log.Logger
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}
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func NewCustomListener() *CustomListener {
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return &CustomListener{
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conns: make(chan Conn, 64),
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Logger: log.NewPrefixLogger(""),
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}
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}
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func (l *CustomListener) Accept() (Conn, error) {
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conn, ok := <-l.conns
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if !ok {
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return nil, fmt.Errorf("listener closed")
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}
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conn.AddLogPrefix(l.GetPrefixStr())
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return conn, nil
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}
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func (l *CustomListener) PutConn(conn Conn) error {
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err := errors.PanicToError(func() {
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select {
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case l.conns <- conn:
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default:
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conn.Close()
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}
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})
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return err
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}
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func (l *CustomListener) Close() error {
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l.mu.Lock()
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defer l.mu.Unlock()
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if !l.closed {
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close(l.conns)
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l.closed = true
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}
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return nil
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}
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func (l *CustomListener) Addr() net.Addr {
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return (*net.TCPAddr)(nil)
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}
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