129 lines
4.1 KiB
Go
129 lines
4.1 KiB
Go
package wire
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import (
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"bytes"
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"github.com/lucas-clemente/quic-go/internal/protocol"
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"github.com/lucas-clemente/quic-go/internal/utils"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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)
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var _ = Describe("RST_STREAM frame", func() {
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Context("when parsing", func() {
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Context("in varint encoding", func() {
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It("accepts sample frame", func() {
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data := []byte{0x1}
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data = append(data, encodeVarInt(0xdeadbeef)...) // stream ID
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data = append(data, []byte{0x13, 0x37}...) // error code
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data = append(data, encodeVarInt(0x987654321)...) // byte offset
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b := bytes.NewReader(data)
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frame, err := ParseRstStreamFrame(b, versionIETFFrames)
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Expect(err).ToNot(HaveOccurred())
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Expect(frame.StreamID).To(Equal(protocol.StreamID(0xdeadbeef)))
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Expect(frame.ByteOffset).To(Equal(protocol.ByteCount(0x987654321)))
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Expect(frame.ErrorCode).To(Equal(protocol.ApplicationErrorCode(0x1337)))
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})
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It("errors on EOFs", func() {
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data := []byte{0x1}
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data = append(data, encodeVarInt(0xdeadbeef)...) // stream ID
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data = append(data, []byte{0x13, 0x37}...) // error code
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data = append(data, encodeVarInt(0x987654321)...) // byte offset
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_, err := ParseRstStreamFrame(bytes.NewReader(data), versionIETFFrames)
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Expect(err).NotTo(HaveOccurred())
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for i := range data {
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_, err := ParseRstStreamFrame(bytes.NewReader(data[0:i]), versionIETFFrames)
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Expect(err).To(HaveOccurred())
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}
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})
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})
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Context("in big endian", func() {
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It("accepts sample frame", func() {
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b := bytes.NewReader([]byte{0x1,
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0xde, 0xad, 0xbe, 0xef, // stream id
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0x88, 0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11, // byte offset
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0x0, 0x0, 0xca, 0xfe, // error code
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})
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frame, err := ParseRstStreamFrame(b, versionBigEndian)
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Expect(err).ToNot(HaveOccurred())
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Expect(frame.StreamID).To(Equal(protocol.StreamID(0xdeadbeef)))
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Expect(frame.ByteOffset).To(Equal(protocol.ByteCount(0x8877665544332211)))
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Expect(frame.ErrorCode).To(Equal(protocol.ApplicationErrorCode(0xcafe)))
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})
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It("errors on EOFs", func() {
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data := []byte{0x1,
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0xef, 0xbe, 0xad, 0xde, 0x44, // stream id
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0x33, 0x22, 0x11, 0xad, 0xfb, 0xca, 0xde, 0x34, // byte offset
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0x12, 0x37, 0x13, // error code
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}
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_, err := ParseRstStreamFrame(bytes.NewReader(data), versionBigEndian)
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Expect(err).NotTo(HaveOccurred())
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for i := range data {
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_, err := ParseRstStreamFrame(bytes.NewReader(data[0:i]), versionBigEndian)
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Expect(err).To(HaveOccurred())
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}
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})
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})
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})
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Context("when writing", func() {
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Context("in varint encoding", func() {
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It("writes a sample frame", func() {
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frame := RstStreamFrame{
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StreamID: 0x1337,
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ByteOffset: 0x11223344decafbad,
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ErrorCode: 0xcafe,
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}
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b := &bytes.Buffer{}
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err := frame.Write(b, versionIETFFrames)
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Expect(err).ToNot(HaveOccurred())
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expected := []byte{0x1}
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expected = append(expected, encodeVarInt(0x1337)...)
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expected = append(expected, []byte{0xca, 0xfe}...)
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expected = append(expected, encodeVarInt(0x11223344decafbad)...)
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Expect(b.Bytes()).To(Equal(expected))
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})
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It("has the correct min length", func() {
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rst := RstStreamFrame{
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StreamID: 0x1337,
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ByteOffset: 0x1234567,
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ErrorCode: 0xde,
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}
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expectedLen := 1 + utils.VarIntLen(0x1337) + utils.VarIntLen(0x1234567) + 2
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Expect(rst.MinLength(versionIETFFrames)).To(Equal(expectedLen))
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})
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})
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Context("in big endian", func() {
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It("writes a sample frame", func() {
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frame := RstStreamFrame{
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StreamID: 0x1337,
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ByteOffset: 0x11223344decafbad,
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ErrorCode: 0xcafe,
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}
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b := &bytes.Buffer{}
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err := frame.Write(b, versionBigEndian)
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Expect(err).ToNot(HaveOccurred())
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Expect(b.Bytes()).To(Equal([]byte{0x01,
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0x0, 0x0, 0x13, 0x37, // stream id
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0x11, 0x22, 0x33, 0x44, 0xde, 0xca, 0xfb, 0xad, // byte offset
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0x0, 0x0, 0xca, 0xfe, // error code
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}))
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})
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It("has the correct min length", func() {
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rst := RstStreamFrame{
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StreamID: 0x1337,
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ByteOffset: 0x1000,
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ErrorCode: 0xde,
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}
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Expect(rst.MinLength(versionBigEndian)).To(Equal(protocol.ByteCount(17)))
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})
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})
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})
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})
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