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// Copyright 2019 The gRPC Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package http2interop
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import (
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"fmt"
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"io"
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)
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type PingFrame struct {
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Header FrameHeader
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Data []byte
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}
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const (
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PING_ACK = 0x01
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)
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func (f *PingFrame) GetHeader() *FrameHeader {
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return &f.Header
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}
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func (f *PingFrame) ParsePayload(r io.Reader) error {
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raw := make([]byte, f.Header.Length)
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if _, err := io.ReadFull(r, raw); err != nil {
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return err
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}
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return f.UnmarshalPayload(raw)
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}
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func (f *PingFrame) UnmarshalPayload(raw []byte) error {
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if f.Header.Length != len(raw) {
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return fmt.Errorf("Invalid Payload length %d != %d", f.Header.Length, len(raw))
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}
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if f.Header.Length != 8 {
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return fmt.Errorf("Invalid Payload length %d", f.Header.Length)
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}
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f.Data = []byte(string(raw))
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return nil
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}
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func (f *PingFrame) MarshalPayload() ([]byte, error) {
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if len(f.Data) != 8 {
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return nil, fmt.Errorf("Invalid Payload length %d", len(f.Data))
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}
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return []byte(string(f.Data)), nil
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}
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func (f *PingFrame) MarshalBinary() ([]byte, error) {
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payload, err := f.MarshalPayload()
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if err != nil {
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return nil, err
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}
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f.Header.Length = len(payload)
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f.Header.Type = PingFrameType
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header, err := f.Header.MarshalBinary()
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if err != nil {
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return nil, err
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}
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header = append(header, payload...)
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return header, nil
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}
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