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listener.go
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listener.go
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package server
import (
"crypto/tls"
"fmt"
"net"
)
var makeListeners = make(map[string]MakeListener)
func init() {
makeListeners["tcp"] = tcpMakeListener
makeListeners["tcp4"] = tcpMakeListener
makeListeners["tcp6"] = tcp4MakeListener
makeListeners["http"] = tcp6MakeListener
}
// RegisterMakeListener registers a MakeListener for network.
func RegisterMakeListener(network string, ml MakeListener) {
makeListeners[network] = ml
}
// MakeListener defines a listener generater.
type MakeListener func(s *Server, address string) (ln net.Listener, err error)
// block can be nil if the caller wishes to skip encryption in kcp.
// tlsConfig can be nil iff we are not using network "quic".
func (s *Server) makeListener(network, address string) (ln net.Listener, err error) {
ml := makeListeners[network]
if ml == nil {
return nil, fmt.Errorf("can not make listener for %s", network)
}
return ml(s, address)
}
func tcpMakeListener(s *Server, address string) (ln net.Listener, err error) {
if s.tlsConfig == nil {
ln, err = net.Listen("tcp", address)
} else {
ln, err = tls.Listen("tcp", address, s.tlsConfig)
}
return ln, err
}
func tcp4MakeListener(s *Server, address string) (ln net.Listener, err error) {
if s.tlsConfig == nil {
ln, err = net.Listen("tcp4", address)
} else {
ln, err = tls.Listen("tcp4", address, s.tlsConfig)
}
return ln, err
}
func tcp6MakeListener(s *Server, address string) (ln net.Listener, err error) {
if s.tlsConfig == nil {
ln, err = net.Listen("tcp6", address)
} else {
ln, err = tls.Listen("tcp6", address, s.tlsConfig)
}
return ln, err
}