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messages.go
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messages.go
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// Copyright 2023 Blink Labs Software
//
// 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 keepalive
import (
"fmt"
"github.com/blinklabs-io/gouroboros/cbor"
"github.com/blinklabs-io/gouroboros/protocol"
)
const (
MessageTypeKeepAlive = 0
MessageTypeKeepAliveResponse = 1
MessageTypeDone = 2
)
func NewMsgFromCbor(msgType uint, data []byte) (protocol.Message, error) {
var ret protocol.Message
switch msgType {
case MessageTypeKeepAlive:
ret = &MsgKeepAlive{}
case MessageTypeKeepAliveResponse:
ret = &MsgKeepAliveResponse{}
case MessageTypeDone:
ret = &MsgDone{}
}
if _, err := cbor.Decode(data, ret); err != nil {
return nil, fmt.Errorf("%s: decode error: %s", ProtocolName, err)
}
if ret != nil {
// Store the raw message CBOR
ret.SetCbor(data)
}
return ret, nil
}
type MsgKeepAlive struct {
protocol.MessageBase
Cookie uint16
}
func NewMsgKeepAlive(cookie uint16) *MsgKeepAlive {
msg := &MsgKeepAlive{
MessageBase: protocol.MessageBase{
MessageType: MessageTypeKeepAlive,
},
Cookie: cookie,
}
return msg
}
type MsgKeepAliveResponse struct {
protocol.MessageBase
Cookie uint16
}
func NewMsgKeepAliveResponse(cookie uint16) *MsgKeepAliveResponse {
msg := &MsgKeepAliveResponse{
MessageBase: protocol.MessageBase{
MessageType: MessageTypeKeepAliveResponse,
},
Cookie: cookie,
}
return msg
}
type MsgDone struct {
protocol.MessageBase
}
func NewMsgDone() *MsgDone {
m := &MsgDone{
MessageBase: protocol.MessageBase{
MessageType: MessageTypeDone,
},
}
return m
}