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94 lines
2.9 KiB
94 lines
2.9 KiB
package internet
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import (
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"context"
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"github.com/xtls/xray-core/common/errors"
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"github.com/xtls/xray-core/common/net"
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"github.com/xtls/xray-core/transport/internet/stat"
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)
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var transportListenerCache = make(map[string]ListenFunc)
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func RegisterTransportListener(protocol string, listener ListenFunc) error {
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if _, found := transportListenerCache[protocol]; found {
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return errors.New(protocol, " listener already registered.").AtError()
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}
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transportListenerCache[protocol] = listener
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return nil
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}
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type ConnHandler func(stat.Connection)
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type ListenFunc func(ctx context.Context, address net.Address, port net.Port, settings *MemoryStreamConfig, handler ConnHandler) (Listener, error)
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type Listener interface {
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Close() error
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Addr() net.Addr
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}
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// ListenUnix is the UDS version of ListenTCP
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func ListenUnix(ctx context.Context, address net.Address, settings *MemoryStreamConfig, handler ConnHandler) (Listener, error) {
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if settings == nil {
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s, err := ToMemoryStreamConfig(nil)
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if err != nil {
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return nil, errors.New("failed to create default unix stream settings").Base(err)
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}
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settings = s
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}
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protocol := settings.ProtocolName
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listenFunc := transportListenerCache[protocol]
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if listenFunc == nil {
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return nil, errors.New(protocol, " unix listener not registered.").AtError()
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}
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listener, err := listenFunc(ctx, address, net.Port(0), settings, handler)
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if err != nil {
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return nil, errors.New("failed to listen on unix address: ", address).Base(err)
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}
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return listener, nil
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}
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func ListenTCP(ctx context.Context, address net.Address, port net.Port, settings *MemoryStreamConfig, handler ConnHandler) (Listener, error) {
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if settings == nil {
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s, err := ToMemoryStreamConfig(nil)
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if err != nil {
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return nil, errors.New("failed to create default stream settings").Base(err)
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}
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settings = s
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}
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if address.Family().IsDomain() && address.Domain() == "localhost" {
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address = net.LocalHostIP
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}
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if address.Family().IsDomain() {
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return nil, errors.New("domain address is not allowed for listening: ", address.Domain())
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}
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protocol := settings.ProtocolName
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listenFunc := transportListenerCache[protocol]
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if listenFunc == nil {
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return nil, errors.New(protocol, " listener not registered.").AtError()
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}
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listener, err := listenFunc(ctx, address, port, settings, handler)
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if err != nil {
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return nil, errors.New("failed to listen on address: ", address, ":", port).Base(err)
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}
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return listener, nil
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}
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// ListenSystem listens on a local address for incoming TCP connections.
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//
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// xray:api:beta
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func ListenSystem(ctx context.Context, addr net.Addr, sockopt *SocketConfig) (net.Listener, error) {
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return effectiveListener.Listen(ctx, addr, sockopt)
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}
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// ListenSystemPacket listens on a local address for incoming UDP connections.
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//
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// xray:api:beta
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func ListenSystemPacket(ctx context.Context, addr net.Addr, sockopt *SocketConfig) (net.PacketConn, error) {
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return effectiveListener.ListenPacket(ctx, addr, sockopt)
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}
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