make wire an internal package

internal/wire/rst_stream_frame.go

@@ -0,0 +1,57 @@
+package wire
+
+import (
+	"bytes"
+
+	"github.com/lucas-clemente/quic-go/internal/utils"
+	"github.com/lucas-clemente/quic-go/protocol"
+)
+
+// A RstStreamFrame in QUIC
+type RstStreamFrame struct {
+	StreamID   protocol.StreamID
+	ErrorCode  uint32
+	ByteOffset protocol.ByteCount
+}
+
+//Write writes a RST_STREAM frame
+func (f *RstStreamFrame) Write(b *bytes.Buffer, version protocol.VersionNumber) error {
+	b.WriteByte(0x01)
+	utils.GetByteOrder(version).WriteUint32(b, uint32(f.StreamID))
+	utils.GetByteOrder(version).WriteUint64(b, uint64(f.ByteOffset))
+	utils.GetByteOrder(version).WriteUint32(b, f.ErrorCode)
+	return nil
+}
+
+// MinLength of a written frame
+func (f *RstStreamFrame) MinLength(version protocol.VersionNumber) (protocol.ByteCount, error) {
+	return 1 + 4 + 8 + 4, nil
+}
+
+// ParseRstStreamFrame parses a RST_STREAM frame
+func ParseRstStreamFrame(r *bytes.Reader, version protocol.VersionNumber) (*RstStreamFrame, error) {
+	frame := &RstStreamFrame{}
+
+	// read the TypeByte
+	if _, err := r.ReadByte(); err != nil {
+		return nil, err
+	}
+
+	sid, err := utils.GetByteOrder(version).ReadUint32(r)
+	if err != nil {
+		return nil, err
+	}
+	frame.StreamID = protocol.StreamID(sid)
+
+	byteOffset, err := utils.GetByteOrder(version).ReadUint64(r)
+	if err != nil {
+		return nil, err
+	}
+	frame.ByteOffset = protocol.ByteCount(byteOffset)
+
+	frame.ErrorCode, err = utils.GetByteOrder(version).ReadUint32(r)
+	if err != nil {
+		return nil, err
+	}
+	return frame, nil
+}