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protocol.go
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protocol.go
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// Copyright (c) 2021 Terminus, Inc.
//
// 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 forward
import (
"encoding/gob"
"io"
"time"
)
const (
// ProtocolVersion .
ProtocolVersion = 1
// HandshakeTimeout .
HandshakeTimeout = 60 * time.Second
)
func init() {
gob.Register(&RequestHeader{})
gob.Register(&ResponseHeader{})
}
// RequestHeader .
type RequestHeader struct {
Version uint32
Name string
Token string
ShadowAddr string
}
// DecodeRequestHeader .
func DecodeRequestHeader(r io.Reader) (*RequestHeader, error) {
dec := gob.NewDecoder(r)
h := &RequestHeader{}
err := dec.Decode(h)
if err != nil {
return nil, err
}
return h, nil
}
// EncodeRequestHeader .
func EncodeRequestHeader(w io.Writer, h *RequestHeader) error {
enc := gob.NewEncoder(w)
return enc.Encode(h)
}
// ResponseHeader .
type ResponseHeader struct {
ShadowAddr string
Error string
Values map[string]interface{}
}
// DecodeResponseHeader .
func DecodeResponseHeader(r io.Reader) (*ResponseHeader, error) {
dec := gob.NewDecoder(r)
h := &ResponseHeader{}
err := dec.Decode(h)
if err != nil {
return nil, err
}
return h, nil
}
// EncodeResponseHeader .
func EncodeResponseHeader(w io.Writer, h *ResponseHeader) error {
enc := gob.NewEncoder(w)
return enc.Encode(h)
}