implement parsing of stream frames

frame_test.go

@@ -0,0 +1,40 @@
+package quic
+
+import (
+	"bytes"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("Frame", func() {
+	Context("when parsing", func() {
+		It("accepts sample frame", func() {
+			b := bytes.NewReader([]byte{0xa0, 0x1, 0x06, 0x00, 'f', 'o', 'o', 'b', 'a', 'r'})
+			frame, err := ParseStreamFrame(b)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(frame.FinBit).To(BeFalse())
+			Expect(frame.DataLengthPresent).To(BeTrue())
+			Expect(frame.OffsetLength).To(BeZero())
+			Expect(frame.StreamIDLength).To(Equal(uint8(1)))
+			Expect(frame.StreamID).To(Equal(uint32(1)))
+			Expect(frame.Offset).To(BeZero())
+			Expect(frame.DataLength).To(Equal(uint16(6)))
+			Expect(frame.Data).To(Equal([]byte("foobar")))
+		})
+
+		It("accepts frame without datalength", func() {
+			b := bytes.NewReader([]byte{0x80, 0x1, 'f', 'o', 'o', 'b', 'a', 'r'})
+			frame, err := ParseStreamFrame(b)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(frame.FinBit).To(BeFalse())
+			Expect(frame.DataLengthPresent).To(BeFalse())
+			Expect(frame.OffsetLength).To(BeZero())
+			Expect(frame.StreamIDLength).To(Equal(uint8(1)))
+			Expect(frame.StreamID).To(Equal(uint32(1)))
+			Expect(frame.Offset).To(BeZero())
+			Expect(frame.DataLength).To(Equal(uint16(0)))
+			Expect(frame.Data).To(Equal([]byte("foobar")))
+		})
+	})
+})