move all frames to separate package

frames/connection_close_frame.go

@@ -0,0 +1,51 @@
+package frames
+
+import (
+	"bytes"
+	"errors"
+
+	"github.com/lucas-clemente/quic-go/utils"
+)
+
+// A ConnectionCloseFrame in QUIC
+type ConnectionCloseFrame struct {
+	ErrorCode    uint32
+	ReasonPhrase string
+}
+
+// Write writes an ACK frame.
+func (f *ConnectionCloseFrame) Write(b *bytes.Buffer) error {
+	return errors.New("ConnectionCloseFrame: Write not yet implemented")
+}
+
+// ParseConnectionCloseFrame reads an ACK frame
+func ParseConnectionCloseFrame(r *bytes.Reader) (*ConnectionCloseFrame, error) {
+	frame := &ConnectionCloseFrame{}
+
+	// read the TypeByte
+	_, err := r.ReadByte()
+	if err != nil {
+		return nil, err
+	}
+
+	frame.ErrorCode, err = utils.ReadUint32(r)
+	if err != nil {
+		return nil, err
+	}
+
+	reasonPhraseLen, err := utils.ReadUint16(r)
+	if err != nil {
+		return nil, err
+	}
+
+	for i := 0; i < int(reasonPhraseLen); i++ {
+		val, err := r.ReadByte()
+		if err != nil {
+			return nil, err
+		}
+
+		frame.ReasonPhrase += string(val)
+	}
+
+	return frame, nil
+}