add support for receiving BLOCKED frames

frames/blocked_frame.go

@@ -0,0 +1,42 @@
+package frames
+
+import (
+	"bytes"
+
+	"github.com/lucas-clemente/quic-go/protocol"
+	"github.com/lucas-clemente/quic-go/utils"
+)
+
+// A BlockedFrame in QUIC
+type BlockedFrame struct {
+	StreamID protocol.StreamID
+}
+
+//Write writes a RST_STREAM frame
+func (f *BlockedFrame) Write(b *bytes.Buffer, packetNumber protocol.PacketNumber, packetNumberLen uint8) error {
+	panic("BlockedFrame: Write not yet implemented")
+}
+
+// MinLength of a written frame
+func (f *BlockedFrame) MinLength() int {
+	panic("BlockedFrame: Write not yet implemented")
+}
+
+// ParseBlockedFrame parses a BLOCKED frame
+func ParseBlockedFrame(r *bytes.Reader) (*BlockedFrame, error) {
+	frame := &BlockedFrame{}
+
+	// read the TypeByte
+	_, err := r.ReadByte()
+	if err != nil {
+		return nil, err
+	}
+
+	sid, err := utils.ReadUint32(r)
+	if err != nil {
+		return nil, err
+	}
+	frame.StreamID = protocol.StreamID(sid)
+
+	return frame, nil
+}

frames/blocked_frame_test.go

@@ -0,0 +1,20 @@
+package frames
+
+import (
+	"bytes"
+
+	"github.com/lucas-clemente/quic-go/protocol"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("BlockedFrame", func() {
+	Context("when parsing", func() {
+		It("accepts sample frame", func() {
+			b := bytes.NewReader([]byte{0x05, 0xEF, 0xBE, 0xAD, 0xDE})
+			frame, err := ParseBlockedFrame(b)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(frame.StreamID).To(Equal(protocol.StreamID(0xDEADBEEF)))
+		})
+	})
+})