http3: add compatibility with net/http.ResponseController (#3790)

* feat: compatibility with "net/http".ResponseController

* better deadline tests

* don't run deadline tests on Go 1.19

* skip deadline tests on Go 1.19

http3/response_writer.go

@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"strconv"
 	"strings"
+	"time"
 
 	"github.com/quic-go/quic-go"
 	"github.com/quic-go/quic-go/internal/utils"
@@ -15,6 +16,7 @@ import (
 
 type responseWriter struct {
 	conn        quic.Connection
+	str         quic.Stream
 	bufferedStr *bufio.Writer
 	buf         []byte
 
@@ -36,6 +38,7 @@ func newResponseWriter(str quic.Stream, conn quic.Connection, logger utils.Logge
 		header:      http.Header{},
 		buf:         make([]byte, 16),
 		conn:        conn,
+		str:         str,
 		bufferedStr: bufio.NewWriter(str),
 		logger:      logger,
 	}
@@ -121,6 +124,14 @@ func (w *responseWriter) StreamCreator() StreamCreator {
 	return w.conn
 }
 
+func (w *responseWriter) SetReadDeadline(deadline time.Time) error {
+	return w.str.SetReadDeadline(deadline)
+}
+
+func (w *responseWriter) SetWriteDeadline(deadline time.Time) error {
+	return w.str.SetWriteDeadline(deadline)
+}
+
 // copied from http2/http2.go
 // bodyAllowedForStatus reports whether a given response status code
 // permits a body. See RFC 2616, section 4.4.