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only set the 0x80 bit to 1 for version negotiation packets

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This commit is contained in:
Marten Seemann 2020-03-10 14:43:19 +07:00
parent ba4194153e
commit c720250b9b
2 changed files with 1 additions and 2 deletions
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2
internal/wire/version_negotiation.go
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@ -15,7 +15,7 @@ func ComposeVersionNegotiation(destConnID, srcConnID protocol.ConnectionID, vers
buf := bytes.NewBuffer(make([]byte, 0, expectedLen))
r := make([]byte, 1)
_, _ = rand.Read(r) // ignore the error here. It is not critical to have perfect random here.
buf.WriteByte(r[0] | 0xc0)
buf.WriteByte(r[0] | 0x80)
utils.BigEndian.WriteUint32(buf, 0) // version 0
buf.WriteByte(uint8(destConnID.Len()))
buf.Write(destConnID)

1
internal/wire/version_negotiation_test.go
View file

@ -14,7 +14,6 @@ var _ = Describe("Version Negotiation Packets", func() {
data, err := ComposeVersionNegotiation(destConnID, srcConnID, versions)
Expect(err).ToNot(HaveOccurred())
Expect(data[0] & 0x80).ToNot(BeZero())
Expect(data[0] & 0x40).ToNot(BeZero())
hdr, _, rest, err := ParsePacket(data, 4)
Expect(err).ToNot(HaveOccurred())
Expect(hdr.DestConnectionID).To(Equal(destConnID))