packet

lib/message/disconnect.go

@@ -0,0 +1,49 @@
+// Copyright (c) 2014 The SurgeMQ Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package message
+
+import "fmt"
+
+// The DISCONNECT Packet is the final Control Packet sent from the Client to the Server.
+// It indicates that the Client is disconnecting cleanly.
+type DisconnectMessage struct {
+	header
+}
+
+var _ Message = (*DisconnectMessage)(nil)
+
+// NewDisconnectMessage creates a new DISCONNECT message.
+func NewDisconnectMessage() *DisconnectMessage {
+	msg := &DisconnectMessage{}
+	msg.SetType(DISCONNECT)
+
+	return msg
+}
+
+func (this *DisconnectMessage) Decode(src []byte) (int, error) {
+	return this.header.decode(src)
+}
+
+func (this *DisconnectMessage) Encode(dst []byte) (int, error) {
+	if !this.dirty {
+		if len(dst) < len(this.dbuf) {
+			return 0, fmt.Errorf("disconnect/Encode: Insufficient buffer size. Expecting %d, got %d.", len(this.dbuf), len(dst))
+		}
+
+		return copy(dst, this.dbuf), nil
+	}
+
+	return this.header.encode(dst)
+}