143 lines
2.7 KiB
Go
143 lines
2.7 KiB
Go
package rtcp
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import (
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"context"
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"net"
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"sync"
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"github.com/go-gost/core/chain"
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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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climiter "github.com/go-gost/x/limiter/conn/wrapper"
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limiter "github.com/go-gost/x/limiter/traffic/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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)
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func init() {
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registry.ListenerRegistry().Register("rtcp", NewListener)
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}
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type rtcpListener struct {
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laddr net.Addr
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ln net.Listener
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router *chain.Router
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logger logger.Logger
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closed chan struct{}
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options listener.Options
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mu sync.Mutex
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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 &rtcpListener{
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closed: make(chan struct{}),
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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 *rtcpListener) 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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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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if laddr, _ := net.ResolveTCPAddr(network, l.options.Addr); laddr != nil {
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l.laddr = laddr
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}
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if l.laddr == nil {
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l.laddr = &bindAddr{addr: l.options.Addr}
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}
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l.router = chain.NewRouter(
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chain.ChainRouterOption(l.options.Chain),
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chain.LoggerRouterOption(l.logger),
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)
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return
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}
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func (l *rtcpListener) Accept() (conn net.Conn, err error) {
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select {
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case <-l.closed:
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return nil, net.ErrClosed
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default:
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}
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ln := l.getListener()
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if ln == nil {
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ln, err = l.router.Bind(
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context.Background(), "tcp", l.laddr.String(),
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chain.MuxBindOption(true),
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)
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if err != nil {
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return nil, listener.NewAcceptError(err)
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}
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ln = metrics.WrapListener(l.options.Service, ln)
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ln = admission.WrapListener(l.options.Admission, ln)
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ln = limiter.WrapListener(l.options.TrafficLimiter, ln)
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ln = climiter.WrapListener(l.options.ConnLimiter, ln)
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l.setListener(ln)
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}
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conn, err = l.ln.Accept()
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if err != nil {
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ln.Close()
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l.setListener(nil)
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return nil, listener.NewAcceptError(err)
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}
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return
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}
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func (l *rtcpListener) Addr() net.Addr {
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return l.laddr
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}
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func (l *rtcpListener) Close() error {
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select {
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case <-l.closed:
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default:
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close(l.closed)
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ln := l.getListener()
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if ln != nil {
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ln.Close()
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// l.ln = nil
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}
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}
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return nil
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}
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func (l *rtcpListener) setListener(ln net.Listener) {
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l.mu.Lock()
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defer l.mu.Unlock()
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l.ln = ln
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}
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func (l *rtcpListener) getListener() net.Listener {
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l.mu.Lock()
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defer l.mu.Unlock()
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return l.ln
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}
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type bindAddr struct {
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addr string
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}
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func (p *bindAddr) Network() string {
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return "tcp"
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}
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func (p *bindAddr) String() string {
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return p.addr
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}
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