135 lines
2.6 KiB
Go
135 lines
2.6 KiB
Go
package http3
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import (
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"net"
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"net/http"
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"sync"
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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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xnet "github.com/go-gost/x/internal/net"
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mdx "github.com/go-gost/x/metadata"
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"github.com/go-gost/x/registry"
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"github.com/lucas-clemente/quic-go"
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"github.com/lucas-clemente/quic-go/http3"
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)
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func init() {
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registry.ListenerRegistry().Register("http3", NewListener)
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}
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type http3Listener struct {
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server *http3.Server
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addr net.Addr
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cqueue chan net.Conn
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errChan chan error
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logger logger.Logger
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md metadata
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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 &http3Listener{
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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 *http3Listener) 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 := "udp"
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if xnet.IsIPv4(l.options.Addr) {
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network = "udp4"
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}
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l.addr, err = net.ResolveUDPAddr(network, l.options.Addr)
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if err != nil {
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return
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}
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l.server = &http3.Server{
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Addr: l.options.Addr,
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TLSConfig: l.options.TLSConfig,
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QuicConfig: &quic.Config{
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KeepAlivePeriod: l.md.keepAlivePeriod,
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HandshakeIdleTimeout: l.md.handshakeTimeout,
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MaxIdleTimeout: l.md.maxIdleTimeout,
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Versions: []quic.VersionNumber{
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quic.Version1,
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},
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MaxIncomingStreams: int64(l.md.maxStreams),
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},
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Handler: http.HandlerFunc(l.handleFunc),
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}
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l.cqueue = make(chan net.Conn, l.md.backlog)
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l.errChan = make(chan error, 1)
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go func() {
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if err := l.server.ListenAndServe(); err != nil {
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l.logger.Error(err)
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}
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}()
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return
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}
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func (l *http3Listener) Accept() (conn net.Conn, err error) {
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var ok bool
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select {
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case conn = <-l.cqueue:
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case err, ok = <-l.errChan:
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if !ok {
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err = listener.ErrClosed
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}
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}
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return
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}
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func (l *http3Listener) Addr() net.Addr {
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return l.addr
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}
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func (l *http3Listener) Close() (err error) {
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l.mu.Lock()
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defer l.mu.Unlock()
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select {
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case <-l.errChan:
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default:
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err = l.server.Close()
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l.errChan <- err
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close(l.errChan)
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}
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return nil
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}
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func (l *http3Listener) handleFunc(w http.ResponseWriter, r *http.Request) {
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raddr, _ := net.ResolveTCPAddr("tcp", r.RemoteAddr)
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conn := &conn{
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laddr: l.addr,
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raddr: raddr,
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closed: make(chan struct{}),
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md: mdx.NewMetadata(map[string]any{
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"r": r,
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"w": w,
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}),
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}
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select {
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case l.cqueue <- conn:
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default:
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l.logger.Warnf("connection queue is full, client %s discarded", r.RemoteAddr)
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return
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}
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<-conn.Done()
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}
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