func dial(netw, addr, svc string) (nchan.Conn, error) {
switch netw {
case "tcp", "tcp4", "tcp6":
if auth.TLSclient == nil {
taddr, err := net.ResolveTCPAddr(netw, addr+":"+svc)
if err != nil {
return nchan.Conn{}, err
}
c, err := net.DialTCP(netw, nil, taddr)
if err != nil {
return nchan.Conn{}, err
}
nc := nchan.NewConn(c, 5, nil, nil)
return nc, nil
}
taddr, err := net.ResolveTCPAddr(netw, addr+":"+svc)
if err != nil {
return nchan.Conn{}, err
}
c, err := net.DialTCP(netw, nil, taddr)
if err != nil {
return nchan.Conn{}, err
}
// Beware this is not enough if you have NATs
c.SetKeepAlivePeriod(2 * time.Second)
c.SetKeepAlive(true)
tc := tls.Client(c, auth.TLSclient)
nc := nchan.NewConn(tc, 5, nil, nil)
return nc, nil
case "pipe":
lk.Lock()
defer lk.Unlock()
dialer, ok := pipes[svc]
if !ok {
return nchan.Conn{}, errors.New("no such pipe")
}
return dialer()
case "fifo":
return fifo.Dial(svc)
default:
return nchan.Conn{}, errors.New("unknown network")
}
}
// Handle one client, called by net.Srv.
func (h ch) HandleCli(c net.Conn, endc chan bool) {
inc := make(chan bool)
outc := make(chan bool)
nc := nchan.NewConn(c, 5, inc, outc)
nc.Tag = c.RemoteAddr().String()
h.ncc <- &nc
doselect {
case <-inc:
inc = nil
if inc==nil && outc==nil {
return
}
case <-outc:
outc = nil
if inc==nil && outc==nil {
return
}
case <-endc:
close(nc.In, "server closing")
close(nc.Out, "server closing")
c.Close()
}
}
