/
TCPServer.go
65 lines (52 loc) · 1.49 KB
/
TCPServer.go
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package netutil
import (
"net"
"time"
"github.com/xiaonanln/goworld/engine/gwioutil"
"github.com/xiaonanln/goworld/engine/gwlog"
)
const (
_RESTART_TCP_SERVER_INTERVAL = 3 * time.Second
_RESTART_UDP_SERVER_INTERVAL = 3 * time.Second
)
// TCPServerDelegate is the implementations that a TCP server should provide
type TCPServerDelegate interface {
ServeTCPConnection(net.Conn)
}
// ServeTCPForever serves on specified address as TCP server, for ever ...
func ServeTCPForever(listenAddr string, delegate TCPServerDelegate) {
for {
err := serveTCPForeverOnce(listenAddr, delegate)
gwlog.Errorf("server@%s failed with error: %v, will restart after %s", listenAddr, err, _RESTART_TCP_SERVER_INTERVAL)
time.Sleep(_RESTART_TCP_SERVER_INTERVAL)
}
}
func serveTCPForeverOnce(listenAddr string, delegate TCPServerDelegate) error {
defer func() {
if err := recover(); err != nil {
gwlog.TraceError("serveTCPImpl: paniced with error %s", err)
}
}()
return ServeTCP(listenAddr, delegate)
}
// ServeTCP serves on specified address as TCP server
func ServeTCP(listenAddr string, delegate TCPServerDelegate) error {
ln, err := net.Listen("tcp", listenAddr)
gwlog.Infof("Listening on TCP: %s ...", listenAddr)
if err != nil {
return err
}
defer ln.Close()
for {
conn, err := ln.Accept()
if err != nil {
if gwioutil.IsTimeoutError(err) {
continue
} else {
return err
}
}
gwlog.Infof("Connection from: %s", conn.RemoteAddr())
go delegate.ServeTCPConnection(conn)
}
}