func wd(z int) uint {
//
if z < 0 {
z = -z
}
return 1 + nat.Wd(uint(z))
}
func New(n uint) *Imp {
//
x := new(Imp)
x.start = n
x.wd = nat.Wd(n)
x.zero = n%10 == 0
if x.wd > 9 {
x.wd = 9
}
switch {
case x.wd <= 2:
x.invalid = 1e2
case x.wd <= 4:
x.invalid = 1e4
default:
x.invalid = 1e9
}
x.n = x.invalid
x.cF, x.cB = col.ScreenF, col.ScreenB
return x
}
func (x *Imp) Go() {
//
if x.gone {
return
}
x.gone = true
portstring := nat.StringFmt(uint(x.port), nat.Wd(uint(x.port)), true)
if x.isServer {
if x.info {
println("nchan.Go started on server", x.server)
}
x.addr, _ = net.ResolveTCPAddr(tcp, ":"+portstring)
// if x.err != nil { Stop (pack, 2) }
x.list, _ = net.ListenTCP(tcp, x.addr)
// if x.err != nil { Stop (pack, 3) }
if x.oneOne {
var e error
x.conn, e = x.list.Accept() // x.conn.RemoteAddr().(*net.TCPAddr).IP == ipFar
if e != nil || x.conn == nil {
Stop(pack, 4)
}
} else {
if x.info {
println("server", x.server, "is up")
}
x.in, x.out = make(chan Any), make(chan Any)
go func() {
for {
conn, err := x.list.Accept()
if err == nil {
x.nClients++
go x.serve(conn)
} else {
// if tst { println ("not accepted because " + err.String()) }
}
}
}()
}
} else { // client
if tst {
println("nchan.Go started for", x.server, "as client")
}
x.farHost.SetFormat(host.Hostname)
dialaddr := x.farHost.String() + ":" + portstring
for {
// println ("waiting for server", x.server)
x.conn, x.err = net.Dial(tcp, dialaddr)
if x.err == nil {
break
}
time.Sleep(2e9)
}
if x.conn == nil {
Stop(pack, 5)
}
if tst {
println("nchan.Go.Dial", x.server, "war erfolgreich")
}
// if x.info { errh.DelHint () }
}
}