82 lines
1.8 KiB
Go
82 lines
1.8 KiB
Go
package ftcp
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import (
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"net"
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"github.com/go-gost/core/common/net/udp"
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"github.com/go-gost/core/listener"
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"github.com/go-gost/core/logger"
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md "github.com/go-gost/core/metadata"
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admission "github.com/go-gost/x/admission/wrapper"
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xnet "github.com/go-gost/x/internal/net"
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limiter "github.com/go-gost/x/limiter/wrapper"
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metrics "github.com/go-gost/x/metrics/wrapper"
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"github.com/go-gost/x/registry"
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"github.com/xtaci/tcpraw"
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)
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func init() {
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registry.ListenerRegistry().Register("ftcp", NewListener)
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}
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type ftcpListener struct {
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ln net.Listener
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logger logger.Logger
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md metadata
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options listener.Options
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}
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func NewListener(opts ...listener.Option) listener.Listener {
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options := listener.Options{}
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for _, opt := range opts {
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opt(&options)
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}
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return &ftcpListener{
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logger: options.Logger,
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options: options,
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}
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}
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func (l *ftcpListener) Init(md md.Metadata) (err error) {
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if err = l.parseMetadata(md); err != nil {
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return
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}
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var conn net.PacketConn
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network := "tcp"
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if xnet.IsIPv4(l.options.Addr) {
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network = "tcp4"
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}
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conn, err = tcpraw.Listen(network, l.options.Addr)
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if err != nil {
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return
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}
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conn = metrics.WrapPacketConn(l.options.Service, conn)
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conn = admission.WrapPacketConn(l.options.Admission, conn)
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conn = limiter.WrapPacketConn(l.options.RateLimiter, conn)
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l.ln = udp.NewListener(
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conn,
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&udp.ListenConfig{
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Backlog: l.md.backlog,
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ReadQueueSize: l.md.readQueueSize,
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ReadBufferSize: l.md.readBufferSize,
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TTL: l.md.ttl,
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KeepAlive: true,
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Logger: l.logger,
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})
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return
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}
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func (l *ftcpListener) Accept() (conn net.Conn, err error) {
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return l.ln.Accept()
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}
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func (l *ftcpListener) Addr() net.Addr {
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return l.ln.Addr()
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}
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func (l *ftcpListener) Close() error {
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return l.ln.Close()
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}
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