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// Copyright 2019 The gRPC Authors
//
// 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 http2interop
import (
"fmt"
"io"
)
type PingFrame struct {
Header FrameHeader
Data []byte
}
const (
PING_ACK = 0x01
)
func (f *PingFrame) GetHeader() *FrameHeader {
return &f.Header
}
func (f *PingFrame) ParsePayload(r io.Reader) error {
raw := make([]byte, f.Header.Length)
if _, err := io.ReadFull(r, raw); err != nil {
return err
}
return f.UnmarshalPayload(raw)
}
func (f *PingFrame) UnmarshalPayload(raw []byte) error {
if f.Header.Length != len(raw) {
return fmt.Errorf("Invalid Payload length %d != %d", f.Header.Length, len(raw))
}
if f.Header.Length != 8 {
return fmt.Errorf("Invalid Payload length %d", f.Header.Length)
}
f.Data = []byte(string(raw))
return nil
}
func (f *PingFrame) MarshalPayload() ([]byte, error) {
if len(f.Data) != 8 {
return nil, fmt.Errorf("Invalid Payload length %d", len(f.Data))
}
return []byte(string(f.Data)), nil
}
func (f *PingFrame) MarshalBinary() ([]byte, error) {
payload, err := f.MarshalPayload()
if err != nil {
return nil, err
}
f.Header.Length = len(payload)
f.Header.Type = PingFrameType
header, err := f.Header.MarshalBinary()
if err != nil {
return nil, err
}
header = append(header, payload...)
return header, nil
}
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