/
main.go
137 lines (121 loc) · 3 KB
/
main.go
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package main
import (
"fmt"
"net"
"sync"
"encoding/binary"
"io"
"github.com/ying32/govcl/samples/simpleIM"
"github.com/ying32/govcl/vcl"
"github.com/ying32/govcl/vcl/types"
)
// 我就是测试下随便写的林
var (
clientMap sync.Map
onlineClientlbl *vcl.TLabel
onlineClientCount int
)
func main() {
vcl.Application.SetIconResId(3)
vcl.Application.Initialize()
vcl.Application.SetMainFormOnTaskBar(true)
mainForm := vcl.Application.CreateForm()
mainForm.SetCaption("IMServer")
mainForm.SetPosition(types.PoScreenCenter)
mainForm.EnabledMaximize(false)
mainForm.SetWidth(300)
mainForm.SetHeight(200)
//mainForm.SetOnCloseQuery(func(Sender vcl.IObject, CanClose *bool) {
// *CanClose = vcl.MessageDlg("是否退出?", types.MtConfirmation, types.MbYes, types.MbNo) == types.IdYes
//})
onlineClientlbl = vcl.NewLabel(mainForm)
onlineClientlbl.SetAlign(types.AlClient)
onlineClientlbl.SetParent(mainForm)
onlineClientlbl.SetAutoSize(false)
onlineClientlbl.Font().SetSize(13)
onlineClientlbl.SetAlignment(types.TaCenter)
onlineClientlbl.SetLayout(types.TlCenter)
onlineClientlbl.SetCaption("当前在线人数:0")
go initTCP()
vcl.Application.Run()
}
func updateOnlineClient() {
//vcl.ThreadSync(func() {
onlineClientlbl.SetCaption(fmt.Sprintf("当前在线人数:%d", onlineClientCount))
//})
}
func initTCP() {
tcpConn, err := net.Listen("tcp", ":6666")
if err != nil {
vcl.ShowMessage(err.Error())
return
}
defer tcpConn.Close()
for {
conn, err := tcpConn.Accept()
if err != nil {
fmt.Println("接受客户端连接异常:", err.Error())
continue
}
fmt.Println("客户连接来自:", conn.RemoteAddr().String())
go newConn(conn)
}
}
func removeConn(conn net.Conn) {
onlineClientCount--
if v, ok := clientMap.Load(conn); ok {
sendClientMsg(conn, simpleIM.TPacket{1002, v.(string), ""})
updateOnlineClient()
clientMap.Delete(conn)
}
}
func sendClientMsg(conn net.Conn, p simpleIM.TPacket) {
clientMap.Range(func(key, value interface{}) bool {
if key.(net.Conn) != conn {
bs, err := simpleIM.Encode(p.CMD, p.NK, p.Content)
if err == nil {
key.(net.Conn).Write(bs)
}
}
return true
})
}
func newConn(conn net.Conn) {
clientMap.Store(conn, "")
onlineClientCount++
updateOnlineClient()
defer conn.Close()
data := make([]byte, 4)
//conn.SetReadDeadline(time.Now().Add(time.Duration(5) * time.Second))
for {
n, err := conn.Read(data)
if err == io.EOF {
removeConn(conn)
break
}
if n == 4 && err == nil {
nLen := binary.LittleEndian.Uint32(data)
buff := make([]byte, nLen)
n, err = conn.Read(buff)
if err == nil {
p, err := simpleIM.Decode(buff)
if err == nil {
if p.CMD == 1001 {
clientMap.Store(conn, p.NK)
}
fmt.Println("cmd:", p.CMD)
fmt.Println("nk:", p.NK)
fmt.Println("content:", p.Content)
sendClientMsg(conn, p)
} else {
fmt.Println("3: n:", n, ", err:", err)
}
} else {
if err == io.EOF {
removeConn(conn)
break
}
}
}
}
}