implement PingFrame

frames/ping_frame.go

@@ -0,0 +1,33 @@
+package frames
+
+import (
+	"bytes"
+
+	"github.com/lucas-clemente/quic-go/protocol"
+)
+
+// A PingFrame is a ping frame
+type PingFrame struct{}
+
+// ParsePingFrame parses a Ping frame
+func ParsePingFrame(r *bytes.Reader) (*PingFrame, error) {
+	frame := &PingFrame{}
+
+	_, err := r.ReadByte()
+	if err != nil {
+		return nil, err
+	}
+
+	return frame, nil
+}
+
+func (f *PingFrame) Write(b *bytes.Buffer, packetNumber protocol.PacketNumber, packetNumberLen uint8) error {
+	typeByte := uint8(0x07)
+	b.WriteByte(typeByte)
+	return nil
+}
+
+// MinLength of a written frame
+func (f *PingFrame) MinLength() int {
+	return 1
+}

frames/ping_frame_test.go

@@ -0,0 +1,33 @@
+package frames
+
+import (
+	"bytes"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("PingFrame", func() {
+	Context("when parsing", func() {
+		It("accepts sample frame", func() {
+			b := bytes.NewReader([]byte{0x07})
+			_, err := ParsePingFrame(b)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(b.Len()).To(Equal(0))
+		})
+	})
+
+	Context("when writing", func() {
+		It("writes a sample frame", func() {
+			b := &bytes.Buffer{}
+			frame := PingFrame{}
+			frame.Write(b, 10, 6)
+			Expect(b.Bytes()).To(Equal([]byte{0x07}))
+		})
+
+		It("has the correct min length", func() {
+			frame := PingFrame{}
+			Expect(frame.MinLength()).To(Equal(1))
+		})
+	})
+})