/*
   Copyright 2020 XiaochengTech

   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 connections

import (
	"net"
)

// 启动TCP监听
func (l *Listener) ListenTcp(addr string) (err error) {
	// 开启TCP监听器
	if l.tcpListener, err = net.Listen(TCP, addr); err != nil {
		return
	}
	// 开启监听循环
	go l.tcpLoop()
	return
}

// TCP监听循环
func (l *Listener) tcpLoop() {
	defer l.tcpListener.Close()
	// 启用TCP监听处理的循环
	for {
		// 已经关闭了
		if l.closed {
			return
		}
		// 获取连接
		conn, e := l.tcpListener.Accept()
		if e != nil {
			l.channel <- Packet{Error: e}
			continue
		}
		// 添加TCP连接
		l.GetConnFromPool(TCP, conn.RemoteAddr().String(), conn)
	}
}