Simple Golang server socket long connection skeleton
go get github.com/yale8848/gosocket- server
package main
import (
"fmt"
"github.com/yale8848/gosocket"
)
type ServerHandlerImp struct {
}
func (s *ServerHandlerImp) Connect(session *gosocket.Session) {
fmt.Println("Connect : ")
}
func (s *ServerHandlerImp) HandleData(session *gosocket.Session, protocol *gosocket.Protocol) {
if protocol.IsHeartBeat() {
fmt.Println("ReadData : IsHeartBeat")
d := protocol.Encode(nil)
session.WriteData(d)
} else {
fmt.Println("ReadData :" + protocol.String())
d := protocol.Encode(protocol.GetData())
session.WriteData(d)
}
}
func (s *ServerHandlerImp) Close(session *gosocket.Session) {
fmt.Println("Close : ")
}
func (s *ServerHandlerImp) AcceptError(err error) {
fmt.Println("AcceptError : " + err.Error())
}
func (s *ServerHandlerImp) ReadTimeout(err error) {
fmt.Println("ReadTimeout : " + err.Error())
}
func main() {
server := gosocket.NewServer(&ServerHandlerImp{}, &gosocket.Protocol{})
server.Start(&gosocket.Config{
Network: "tcp", Address: ":7777", NetworkListen: "tcp", ReadTimeout: 20})
}
- client
package main
import (
"fmt"
"github.com/yale8848/gosocket"
"net"
"time"
)
func main() {
hawkServer, err := net.ResolveTCPAddr("tcp4", "127.0.0.1:7777")
if err != nil {
fmt.Println(err)
return
}
connection, err := net.DialTCP("tcp4", nil, hawkServer)
if err != nil {
fmt.Println(err)
return
}
time.Sleep(10 * time.Second)
protocol := &gosocket.Protocol{
Version: 1,
Reserve: 0,
}
connection.Write(protocol.Encode([]byte("Hello World")))
sig := make(chan bool)
go heartBeat(connection)
go receive(connection, protocol, sig)
<-sig
connection.Close()
}
func heartBeat(con *net.TCPConn) {
protocol := &gosocket.Protocol{
Version: 1,
Reserve: gosocket.HEART_BEAT,
}
ticker := time.Tick(10 * time.Second)
count := 0
for {
select {
case <-ticker:
con.Write(protocol.Encode(nil))
count++
if count == 3 {
return
}
}
}
}
func receive(con *net.TCPConn, protocol *gosocket.Protocol, sig chan bool) {
buff := make([]byte, 1024)
for {
n, error := con.Read(buff)
if error != nil {
fmt.Println(error)
break
}
finish := protocol.Decode(buff[0:n])
if finish {
if protocol.IsHeartBeat() {
fmt.Println("receive from server: IsHeartBeat")
} else {
fmt.Println("receive from server: " + string(protocol.GetData()))
}
}
}
fmt.Printf("read finish")
sig <- true
}