99 lines
3.0 KiB
Go
99 lines
3.0 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/onsi/ginkgo"
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. "github.com/onsi/gomega"
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)
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var _ = Describe("WINDOW_UPDATE frame", func() {
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Context("parsing", func() {
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Context("in big endian", func() {
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It("parses a stream-level WINDOW_UPDATE", func() {
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b := bytes.NewReader([]byte{0x4,
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0xde, 0xad, 0xbe, 0xef, // stream id
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0xde, 0xca, 0xfb, 0xad, 0x11, 0x22, 0x33, 0x44, // byte offset
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})
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f, err := ParseWindowUpdateFrame(b, versionBigEndian)
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Expect(err).ToNot(HaveOccurred())
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Expect(f).To(BeAssignableToTypeOf(&MaxStreamDataFrame{}))
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frame := f.(*MaxStreamDataFrame)
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Expect(frame.ByteOffset).To(Equal(protocol.ByteCount(0xdecafbad11223344)))
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Expect(frame.StreamID).To(Equal(protocol.StreamID(0xdeadbeef)))
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})
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It("parses a connection-level WINDOW_UPDATE", func() {
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b := bytes.NewReader([]byte{0x4,
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0x0, 0x0, 0x0, 0x0, // stream id
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0xde, 0xca, 0xfb, 0xad, 0x11, 0x22, 0x33, 0x44, // byte offset
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})
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f, err := ParseWindowUpdateFrame(b, versionBigEndian)
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Expect(err).ToNot(HaveOccurred())
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Expect(f).To(BeAssignableToTypeOf(&MaxDataFrame{}))
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frame := f.(*MaxDataFrame)
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Expect(frame.ByteOffset).To(Equal(protocol.ByteCount(0xdecafbad11223344)))
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})
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It("errors on EOFs", func() {
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data := []byte{0x4,
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0xef, 0xbe, 0xad, 0xde, // stream id
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0x44, 0x33, 0x22, 0x11, 0xad, 0xfb, 0xca, 0xde, // byte offset
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}
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_, err := ParseWindowUpdateFrame(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 := ParseWindowUpdateFrame(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("writing", func() {
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It("has the proper min length for the stream-level WINDOW_UPDATE frame", func() {
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f := &MaxDataFrame{
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ByteOffset: 0xdeadbeef,
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}
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Expect(f.MinLength(versionBigEndian)).To(Equal(protocol.ByteCount(1 + 4 + 8)))
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})
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It("has the proper min length for the connection-level WINDOW_UPDATE frame", func() {
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f := &MaxDataFrame{
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ByteOffset: 0xdeadbeef,
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}
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Expect(f.MinLength(versionBigEndian)).To(Equal(protocol.ByteCount(1 + 4 + 8)))
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})
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Context("in big endian", func() {
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It("writes a stream-level WINDOW_UPDATE frame", func() {
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b := &bytes.Buffer{}
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f := &MaxStreamDataFrame{
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StreamID: 0xdecafbad,
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ByteOffset: 0xdeadbeefcafe1337,
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}
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err := f.Write(b, versionBigEndian)
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Expect(err).ToNot(HaveOccurred())
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Expect(b.Bytes()).To(Equal([]byte{0x4,
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0xde, 0xca, 0xfb, 0xad, // stream ID 0
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0xde, 0xad, 0xbe, 0xef, 0xca, 0xfe, 0x13, 0x37, // byte offset
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}))
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})
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It("writes a connection-level WINDOW_UPDATE frame", func() {
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b := &bytes.Buffer{}
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f := &MaxDataFrame{
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ByteOffset: 0xdeadbeefcafe1337,
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}
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err := f.Write(b, versionBigEndian)
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Expect(err).ToNot(HaveOccurred())
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Expect(b.Bytes()).To(Equal([]byte{0x4,
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0x0, 0x0, 0x0, 0x0, // stream ID 0
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0xde, 0xad, 0xbe, 0xef, 0xca, 0xfe, 0x13, 0x37, // byte offset
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}))
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})
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})
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})
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})
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