func (n *networkManager) Connect(profile mojang.Profile, server string) {
logLevel := networkLog.Value()
go func() {
var err error
n.conn, err = protocol.Dial(server)
if err != nil {
n.SignalClose(err)
return
}
if logLevel > 0 {
n.conn.Logger = func(read bool, packet protocol.Packet) {
if !read && logLevel < 2 {
return
}
if logLevel < 3 {
switch packet.(type) {
case *protocol.ChunkData:
return
}
}
dir := "read"
if !read {
dir = "write"
}
console.Text("%s[%s] %T%+v", server, dir, packet, packet)
}
}
err = n.conn.LoginToServer(profile)
if err != nil {
n.SignalClose(err)
return
}
preLogin:
for {
packet, err := n.conn.ReadPacket()
if err != nil {
n.SignalClose(err)
return
}
switch packet := packet.(type) {
case *protocol.SetInitialCompression:
n.conn.SetCompression(int(packet.Threshold))
case *protocol.LoginSuccess:
n.conn.State = protocol.Play
break preLogin
case *protocol.LoginDisconnect:
n.SignalClose(errors.New(packet.Reason.String()))
return
default:
n.SignalClose(fmt.Errorf("unhandled packet %T", packet))
return
}
}
first := true
for {
packet, err := n.conn.ReadPacket()
if err != nil {
n.SignalClose(err)
return
}
if first {
go n.writeHandler()
first = false
}
// Handle keep alives async as there is no need to process them
switch packet := packet.(type) {
case *protocol.KeepAliveClientbound:
n.Write(&protocol.KeepAliveServerbound{ID: packet.ID})
case *protocol.SetCompression:
n.conn.SetCompression(int(packet.Threshold))
default:
n.readChan <- packet
}
}
}()
}
func (sl *serverList) pingServer(addr string, motd, version *ui.Formatted,
icon *ui.Image, id string, ping *ui.Image, players *ui.Text) {
conn, err := protocol.Dial(addr)
if err != nil {
syncChan <- func() {
msg := &format.TextComponent{Text: err.Error()}
msg.Color = format.Red
motd.Update(format.Wrap(msg))
}
return
}
defer conn.Close()
resp, pingTime, err := conn.RequestStatus()
syncChan <- func() {
if err != nil {
msg := &format.TextComponent{Text: err.Error()}
msg.Color = format.Red
motd.Update(format.Wrap(msg))
return
}
y := 0.0
pt := pingTime.Seconds() / 1000
switch {
case pt <= 75:
y = 16 / 256.0
case pt <= 150:
y = 24 / 256.0
case pt <= 225:
y = 32 / 256.0
case pt <= 350:
y = 40 / 256.0
case pt < 999:
y = 48 / 256.0
default:
y = 56 / 256.0
}
ping.SetTextureY(y)
if resp.Version.Protocol == protocol.SupportedProtocolVersion {
players.SetG(255)
players.SetB(255)
players.Update(fmt.Sprintf("%d/%d", resp.Players.Online, resp.Players.Max))
} else {
players.SetG(85)
players.SetB(85)
players.Update(fmt.Sprintf("Out of date %d/%d", resp.Players.Online, resp.Players.Max))
}
txt := &format.TextComponent{Text: resp.Version.Name}
txt.Color = format.Yellow
ver := format.Wrap(txt)
format.ConvertLegacy(ver)
version.Update(ver)
desc := resp.Description
format.ConvertLegacy(desc)
motd.Update(desc)
if strings.HasPrefix(resp.Favicon, "data:image/png;base64,") {
favicon := resp.Favicon[len("data:image/png;base64,"):]
data, err := base64.StdEncoding.DecodeString(favicon)
if err != nil {
fmt.Printf("error base64 decoding favicon: %s\n", err)
return
}
img, err := png.Decode(bytes.NewReader(data))
if err != nil {
fmt.Printf("error decoding favicon: %s\n", err)
return
}
render.AddIcon(id, img)
icon.SetTexture(render.Icon(id))
}
}
}