add http3 reverse proxy

listener/http3/conn.go

@@ -0,0 +1,66 @@
+package http3
+
+import (
+	"errors"
+	"net"
+	"net/http"
+	"time"
+
+	mdata "github.com/go-gost/core/metadata"
+)
+
+// a dummy HTTP3 server conn used by HTTP3 handler
+type conn struct {
+	md     mdata.Metadata
+	r      *http.Request
+	w      http.ResponseWriter
+	laddr  net.Addr
+	raddr  net.Addr
+	closed chan struct{}
+}
+
+func (c *conn) Read(b []byte) (n int, err error) {
+	return 0, &net.OpError{Op: "read", Net: "http3", Source: nil, Addr: nil, Err: errors.New("read not supported")}
+}
+
+func (c *conn) Write(b []byte) (n int, err error) {
+	return 0, &net.OpError{Op: "write", Net: "http3", Source: nil, Addr: nil, Err: errors.New("write not supported")}
+}
+
+func (c *conn) Close() error {
+	select {
+	case <-c.closed:
+	default:
+		close(c.closed)
+	}
+	return nil
+}
+
+func (c *conn) LocalAddr() net.Addr {
+	return c.laddr
+}
+
+func (c *conn) RemoteAddr() net.Addr {
+	return c.raddr
+}
+
+func (c *conn) SetDeadline(t time.Time) error {
+	return &net.OpError{Op: "set", Net: "http3", Source: nil, Addr: nil, Err: errors.New("deadline not supported")}
+}
+
+func (c *conn) SetReadDeadline(t time.Time) error {
+	return &net.OpError{Op: "set", Net: "http3", Source: nil, Addr: nil, Err: errors.New("deadline not supported")}
+}
+
+func (c *conn) SetWriteDeadline(t time.Time) error {
+	return &net.OpError{Op: "set", Net: "http3", Source: nil, Addr: nil, Err: errors.New("deadline not supported")}
+}
+
+func (c *conn) Done() <-chan struct{} {
+	return c.closed
+}
+
+// Metadata implements metadata.Metadatable interface.
+func (c *conn) Metadata() mdata.Metadata {
+	return c.md
+}