/
opcode.go
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/
opcode.go
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// Copyright 2021-2023 antlabs. 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 opcode
type Opcode uint8
const (
Continuation Opcode = iota
Text
Binary
// 3 - 7保留
_ // 3
_
_ // 5
_
_ // 7
Close
Ping
Pong
)
var ErrClose = "websocket"
func (c Opcode) String() string {
switch {
case c >= 3 && c <= 7:
return "control"
case c == Text:
return "text"
case c == Binary:
return "binary"
case c == Close:
return "close"
case c == Ping:
return "ping"
case c == Pong:
return "pong"
case c == Continuation:
return "continuation"
default:
return "unknown"
}
}
func (c Opcode) IsControl() bool {
return (c & (1 << 3)) > 0
}