mirror of
https://github.com/refraction-networking/uquic.git
synced 2025-04-03 20:27:35 +03:00
230 lines
9.3 KiB
Go
230 lines
9.3 KiB
Go
package quic
|
|
|
|
import (
|
|
"bytes"
|
|
|
|
"github.com/golang/mock/gomock"
|
|
|
|
"github.com/lucas-clemente/quic-go/internal/protocol"
|
|
"github.com/lucas-clemente/quic-go/internal/wire"
|
|
. "github.com/onsi/ginkgo"
|
|
. "github.com/onsi/gomega"
|
|
)
|
|
|
|
var _ = Describe("Stream Framer", func() {
|
|
const (
|
|
id1 = protocol.StreamID(10)
|
|
id2 = protocol.StreamID(11)
|
|
)
|
|
|
|
var (
|
|
framer *framer
|
|
cryptoStream *MockCryptoStream
|
|
stream1, stream2 *MockSendStreamI
|
|
streamGetter *MockStreamGetter
|
|
)
|
|
|
|
BeforeEach(func() {
|
|
streamGetter = NewMockStreamGetter(mockCtrl)
|
|
stream1 = NewMockSendStreamI(mockCtrl)
|
|
stream1.EXPECT().StreamID().Return(protocol.StreamID(5)).AnyTimes()
|
|
stream2 = NewMockSendStreamI(mockCtrl)
|
|
stream2.EXPECT().StreamID().Return(protocol.StreamID(6)).AnyTimes()
|
|
cryptoStream = NewMockCryptoStream(mockCtrl)
|
|
framer = newFramer(cryptoStream, streamGetter, versionGQUICFrames)
|
|
})
|
|
|
|
Context("handling control frames", func() {
|
|
It("adds control frames", func() {
|
|
mdf := &wire.MaxDataFrame{ByteOffset: 0x42}
|
|
msdf := &wire.MaxStreamDataFrame{ByteOffset: 0x1337}
|
|
framer.QueueControlFrame(mdf)
|
|
framer.QueueControlFrame(msdf)
|
|
frames, length := framer.AppendControlFrames(nil, 1000)
|
|
Expect(frames).To(ContainElement(mdf))
|
|
Expect(frames).To(ContainElement(msdf))
|
|
Expect(length).To(Equal(mdf.Length(framer.version) + msdf.Length(framer.version)))
|
|
})
|
|
|
|
It("appends to the slice given", func() {
|
|
ack := &wire.AckFrame{}
|
|
mdf := &wire.MaxDataFrame{ByteOffset: 0x42}
|
|
framer.QueueControlFrame(mdf)
|
|
frames, length := framer.AppendControlFrames([]wire.Frame{ack}, 1000)
|
|
Expect(frames).To(Equal([]wire.Frame{ack, mdf}))
|
|
Expect(length).To(Equal(mdf.Length(framer.version)))
|
|
})
|
|
|
|
It("adds the right number of frames", func() {
|
|
maxSize := protocol.ByteCount(1000)
|
|
bf := &wire.BlockedFrame{Offset: 0x1337}
|
|
bfLen := bf.Length(framer.version)
|
|
numFrames := int(maxSize / bfLen) // max number of frames that fit into maxSize
|
|
for i := 0; i < numFrames+1; i++ {
|
|
framer.QueueControlFrame(bf)
|
|
}
|
|
frames, length := framer.AppendControlFrames(nil, protocol.ByteCount(maxSize))
|
|
Expect(frames).To(HaveLen(numFrames))
|
|
Expect(length).To(BeNumerically(">", maxSize-bfLen))
|
|
frames, length = framer.AppendControlFrames(nil, protocol.ByteCount(maxSize))
|
|
Expect(frames).To(HaveLen(1))
|
|
Expect(length).To(Equal(bfLen))
|
|
})
|
|
})
|
|
|
|
Context("popping STREAM frames", func() {
|
|
It("returns nil when popping an empty framer", func() {
|
|
Expect(framer.AppendStreamFrames(nil, 1000)).To(BeEmpty())
|
|
})
|
|
|
|
It("returns STREAM frames", func() {
|
|
streamGetter.EXPECT().GetOrOpenSendStream(id1).Return(stream1, nil)
|
|
f := &wire.StreamFrame{
|
|
StreamID: id1,
|
|
Data: []byte("foobar"),
|
|
Offset: 42,
|
|
}
|
|
stream1.EXPECT().popStreamFrame(gomock.Any()).Return(f, false)
|
|
framer.AddActiveStream(id1)
|
|
fs := framer.AppendStreamFrames(nil, 1000)
|
|
Expect(fs).To(Equal([]wire.Frame{f}))
|
|
})
|
|
|
|
It("appends to a frame slice", func() {
|
|
streamGetter.EXPECT().GetOrOpenSendStream(id1).Return(stream1, nil)
|
|
f := &wire.StreamFrame{
|
|
StreamID: id1,
|
|
Data: []byte("foobar"),
|
|
}
|
|
stream1.EXPECT().popStreamFrame(gomock.Any()).Return(f, false)
|
|
framer.AddActiveStream(id1)
|
|
mdf := &wire.MaxDataFrame{ByteOffset: 1337}
|
|
frames := []wire.Frame{mdf}
|
|
fs := framer.AppendStreamFrames(frames, 1000)
|
|
Expect(fs).To(Equal([]wire.Frame{mdf, f}))
|
|
})
|
|
|
|
It("skips a stream that was reported active, but was completed shortly after", func() {
|
|
streamGetter.EXPECT().GetOrOpenSendStream(id1).Return(nil, nil)
|
|
streamGetter.EXPECT().GetOrOpenSendStream(id2).Return(stream2, nil)
|
|
f := &wire.StreamFrame{
|
|
StreamID: id2,
|
|
Data: []byte("foobar"),
|
|
}
|
|
stream2.EXPECT().popStreamFrame(gomock.Any()).Return(f, false)
|
|
framer.AddActiveStream(id1)
|
|
framer.AddActiveStream(id2)
|
|
Expect(framer.AppendStreamFrames(nil, 1000)).To(Equal([]wire.Frame{f}))
|
|
})
|
|
|
|
It("skips a stream that was reported active, but doesn't have any data", func() {
|
|
streamGetter.EXPECT().GetOrOpenSendStream(id1).Return(stream1, nil)
|
|
streamGetter.EXPECT().GetOrOpenSendStream(id2).Return(stream2, nil)
|
|
f := &wire.StreamFrame{
|
|
StreamID: id2,
|
|
Data: []byte("foobar"),
|
|
}
|
|
stream1.EXPECT().popStreamFrame(gomock.Any()).Return(nil, false)
|
|
stream2.EXPECT().popStreamFrame(gomock.Any()).Return(f, false)
|
|
framer.AddActiveStream(id1)
|
|
framer.AddActiveStream(id2)
|
|
Expect(framer.AppendStreamFrames(nil, 1000)).To(Equal([]wire.Frame{f}))
|
|
})
|
|
|
|
It("pops from a stream multiple times, if it has enough data", func() {
|
|
streamGetter.EXPECT().GetOrOpenSendStream(id1).Return(stream1, nil).Times(2)
|
|
f1 := &wire.StreamFrame{StreamID: id1, Data: []byte("foobar")}
|
|
f2 := &wire.StreamFrame{StreamID: id1, Data: []byte("foobaz")}
|
|
stream1.EXPECT().popStreamFrame(gomock.Any()).Return(f1, true)
|
|
stream1.EXPECT().popStreamFrame(gomock.Any()).Return(f2, false)
|
|
framer.AddActiveStream(id1) // only add it once
|
|
Expect(framer.AppendStreamFrames(nil, protocol.MinStreamFrameSize)).To(Equal([]wire.Frame{f1}))
|
|
Expect(framer.AppendStreamFrames(nil, protocol.MinStreamFrameSize)).To(Equal([]wire.Frame{f2}))
|
|
// no further calls to popStreamFrame, after popStreamFrame said there's no more data
|
|
Expect(framer.AppendStreamFrames(nil, protocol.MinStreamFrameSize)).To(BeNil())
|
|
})
|
|
|
|
It("re-queues a stream at the end, if it has enough data", func() {
|
|
streamGetter.EXPECT().GetOrOpenSendStream(id1).Return(stream1, nil).Times(2)
|
|
streamGetter.EXPECT().GetOrOpenSendStream(id2).Return(stream2, nil)
|
|
f11 := &wire.StreamFrame{StreamID: id1, Data: []byte("foobar")}
|
|
f12 := &wire.StreamFrame{StreamID: id1, Data: []byte("foobaz")}
|
|
f2 := &wire.StreamFrame{StreamID: id2, Data: []byte("raboof")}
|
|
stream1.EXPECT().popStreamFrame(gomock.Any()).Return(f11, true)
|
|
stream1.EXPECT().popStreamFrame(gomock.Any()).Return(f12, false)
|
|
stream2.EXPECT().popStreamFrame(gomock.Any()).Return(f2, false)
|
|
framer.AddActiveStream(id1) // only add it once
|
|
framer.AddActiveStream(id2)
|
|
// first a frame from stream 1
|
|
Expect(framer.AppendStreamFrames(nil, protocol.MinStreamFrameSize)).To(Equal([]wire.Frame{f11}))
|
|
// then a frame from stream 2
|
|
Expect(framer.AppendStreamFrames(nil, protocol.MinStreamFrameSize)).To(Equal([]wire.Frame{f2}))
|
|
// then another frame from stream 1
|
|
Expect(framer.AppendStreamFrames(nil, protocol.MinStreamFrameSize)).To(Equal([]wire.Frame{f12}))
|
|
})
|
|
|
|
It("only dequeues data from each stream once per packet", func() {
|
|
streamGetter.EXPECT().GetOrOpenSendStream(id1).Return(stream1, nil)
|
|
streamGetter.EXPECT().GetOrOpenSendStream(id2).Return(stream2, nil)
|
|
f1 := &wire.StreamFrame{StreamID: id1, Data: []byte("foobar")}
|
|
f2 := &wire.StreamFrame{StreamID: id2, Data: []byte("raboof")}
|
|
// both streams have more data, and will be re-queued
|
|
stream1.EXPECT().popStreamFrame(gomock.Any()).Return(f1, true)
|
|
stream2.EXPECT().popStreamFrame(gomock.Any()).Return(f2, true)
|
|
framer.AddActiveStream(id1)
|
|
framer.AddActiveStream(id2)
|
|
Expect(framer.AppendStreamFrames(nil, 1000)).To(Equal([]wire.Frame{f1, f2}))
|
|
})
|
|
|
|
It("returns multiple normal frames in the order they were reported active", func() {
|
|
streamGetter.EXPECT().GetOrOpenSendStream(id1).Return(stream1, nil)
|
|
streamGetter.EXPECT().GetOrOpenSendStream(id2).Return(stream2, nil)
|
|
f1 := &wire.StreamFrame{Data: []byte("foobar")}
|
|
f2 := &wire.StreamFrame{Data: []byte("foobaz")}
|
|
stream1.EXPECT().popStreamFrame(gomock.Any()).Return(f1, false)
|
|
stream2.EXPECT().popStreamFrame(gomock.Any()).Return(f2, false)
|
|
framer.AddActiveStream(id2)
|
|
framer.AddActiveStream(id1)
|
|
Expect(framer.AppendStreamFrames(nil, 1000)).To(Equal([]wire.Frame{f2, f1}))
|
|
})
|
|
|
|
It("only asks a stream for data once, even if it was reported active multiple times", func() {
|
|
streamGetter.EXPECT().GetOrOpenSendStream(id1).Return(stream1, nil)
|
|
f := &wire.StreamFrame{Data: []byte("foobar")}
|
|
stream1.EXPECT().popStreamFrame(gomock.Any()).Return(f, false) // only one call to this function
|
|
framer.AddActiveStream(id1)
|
|
framer.AddActiveStream(id1)
|
|
Expect(framer.AppendStreamFrames(nil, 1000)).To(HaveLen(1))
|
|
})
|
|
|
|
It("does not pop empty frames", func() {
|
|
fs := framer.AppendStreamFrames(nil, 500)
|
|
Expect(fs).To(BeEmpty())
|
|
})
|
|
|
|
It("pops frames that have the minimum size", func() {
|
|
streamGetter.EXPECT().GetOrOpenSendStream(id1).Return(stream1, nil)
|
|
stream1.EXPECT().popStreamFrame(protocol.MinStreamFrameSize).Return(&wire.StreamFrame{Data: []byte("foobar")}, false)
|
|
framer.AddActiveStream(id1)
|
|
framer.AppendStreamFrames(nil, protocol.MinStreamFrameSize)
|
|
})
|
|
|
|
It("does not pop frames smaller than the minimum size", func() {
|
|
// don't expect a call to PopStreamFrame()
|
|
framer.AppendStreamFrames(nil, protocol.MinStreamFrameSize-1)
|
|
})
|
|
|
|
It("stops iterating when the remaining size is smaller than the minimum STREAM frame size", func() {
|
|
streamGetter.EXPECT().GetOrOpenSendStream(id1).Return(stream1, nil)
|
|
// pop a frame such that the remaining size is one byte less than the minimum STREAM frame size
|
|
f := &wire.StreamFrame{
|
|
StreamID: id1,
|
|
Data: bytes.Repeat([]byte("f"), int(500-protocol.MinStreamFrameSize)),
|
|
}
|
|
stream1.EXPECT().popStreamFrame(protocol.ByteCount(500)).Return(f, false)
|
|
framer.AddActiveStream(id1)
|
|
fs := framer.AppendStreamFrames(nil, 500)
|
|
Expect(fs).To(Equal([]wire.Frame{f}))
|
|
})
|
|
})
|
|
})
|