github.com/apernet/quic-go@v0.43.1-0.20240515053213-5e9e635fd9f0/internal/wire/reset_stream_frame_test.go (about)

     1  package wire
     2  
     3  import (
     4  	"bytes"
     5  
     6  	"github.com/apernet/quic-go/internal/protocol"
     7  	"github.com/apernet/quic-go/internal/qerr"
     8  	"github.com/apernet/quic-go/quicvarint"
     9  
    10  	. "github.com/onsi/ginkgo/v2"
    11  	. "github.com/onsi/gomega"
    12  )
    13  
    14  var _ = Describe("RESET_STREAM frame", func() {
    15  	Context("when parsing", func() {
    16  		It("accepts sample frame", func() {
    17  			data := encodeVarInt(0xdeadbeef)                  // stream ID
    18  			data = append(data, encodeVarInt(0x1337)...)      // error code
    19  			data = append(data, encodeVarInt(0x987654321)...) // byte offset
    20  			b := bytes.NewReader(data)
    21  			frame, err := parseResetStreamFrame(b, protocol.Version1)
    22  			Expect(err).ToNot(HaveOccurred())
    23  			Expect(frame.StreamID).To(Equal(protocol.StreamID(0xdeadbeef)))
    24  			Expect(frame.FinalSize).To(Equal(protocol.ByteCount(0x987654321)))
    25  			Expect(frame.ErrorCode).To(Equal(qerr.StreamErrorCode(0x1337)))
    26  		})
    27  
    28  		It("errors on EOFs", func() {
    29  			data := encodeVarInt(0xdeadbeef)                  // stream ID
    30  			data = append(data, encodeVarInt(0x1337)...)      // error code
    31  			data = append(data, encodeVarInt(0x987654321)...) // byte offset
    32  			_, err := parseResetStreamFrame(bytes.NewReader(data), protocol.Version1)
    33  			Expect(err).NotTo(HaveOccurred())
    34  			for i := range data {
    35  				_, err := parseResetStreamFrame(bytes.NewReader(data[:i]), protocol.Version1)
    36  				Expect(err).To(HaveOccurred())
    37  			}
    38  		})
    39  	})
    40  
    41  	Context("when writing", func() {
    42  		It("writes a sample frame", func() {
    43  			frame := ResetStreamFrame{
    44  				StreamID:  0x1337,
    45  				FinalSize: 0x11223344decafbad,
    46  				ErrorCode: 0xcafe,
    47  			}
    48  			b, err := frame.Append(nil, protocol.Version1)
    49  			Expect(err).ToNot(HaveOccurred())
    50  			expected := []byte{resetStreamFrameType}
    51  			expected = append(expected, encodeVarInt(0x1337)...)
    52  			expected = append(expected, encodeVarInt(0xcafe)...)
    53  			expected = append(expected, encodeVarInt(0x11223344decafbad)...)
    54  			Expect(b).To(Equal(expected))
    55  		})
    56  
    57  		It("has the correct length", func() {
    58  			rst := ResetStreamFrame{
    59  				StreamID:  0x1337,
    60  				FinalSize: 0x1234567,
    61  				ErrorCode: 0xde,
    62  			}
    63  			expectedLen := 1 + quicvarint.Len(0x1337) + quicvarint.Len(0x1234567) + 2
    64  			Expect(rst.Length(protocol.Version1)).To(BeEquivalentTo(expectedLen))
    65  		})
    66  	})
    67  })