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remove unnecessary Raw byte slice from the header

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This commit is contained in:
Marten Seemann 2019-01-03 10:14:08 +07:00
parent 3691a18849
commit 5a37e8983d
3 changed files with 3 additions and 7 deletions
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8
packet_unpacker.go
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@ -66,18 +66,16 @@ func (u *packetUnpacker) Unpack(hdr *wire.Header, data []byte) (*unpackedPacket,
&data[0],
data[hdrLen:hdrLen+4],
)
// 3. parse the header (and learn the actual length of the packet number)
extHdr, err := hdr.ParseExtended(r, u.version)
if err != nil {
return nil, fmt.Errorf("error parsing extended header: %s", err)
}
extHdr.Raw = data[:hdrLen+int(extHdr.PacketNumberLen)]
extHdrLen := hdrLen + int(extHdr.PacketNumberLen)
// 4. if the packet number is shorter than 4 bytes, replace the remaining bytes with the copy we saved earlier
if extHdr.PacketNumberLen != protocol.PacketNumberLen4 {
copy(data[hdrLen+int(extHdr.PacketNumberLen):hdrLen+4], origPNBytes[int(extHdr.PacketNumberLen):])
copy(data[extHdrLen:hdrLen+4], origPNBytes[int(extHdr.PacketNumberLen):])
}
data = data[hdrLen+int(extHdr.PacketNumberLen):]
pn := protocol.DecodePacketNumber(
extHdr.PacketNumberLen,
@ -85,7 +83,7 @@ func (u *packetUnpacker) Unpack(hdr *wire.Header, data []byte) (*unpackedPacket,
extHdr.PacketNumber,
)
decrypted, err := opener.Open(data[:0], data, pn, extHdr.Raw)
decrypted, err := opener.Open(data[extHdrLen:extHdrLen], data[extHdrLen:], pn, data[:extHdrLen])
if err != nil {
return nil, err
}