mirror of https://github.com/grpc/grpc.git
The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
86 lines
2.1 KiB
86 lines
2.1 KiB
// 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 ( |
|
"encoding/binary" |
|
"fmt" |
|
"io" |
|
) |
|
|
|
type GoAwayFrame struct { |
|
Header FrameHeader |
|
Reserved |
|
StreamID |
|
// TODO(carl-mastrangelo): make an enum out of this. |
|
Code uint32 |
|
Data []byte |
|
} |
|
|
|
func (f *GoAwayFrame) GetHeader() *FrameHeader { |
|
return &f.Header |
|
} |
|
|
|
func (f *GoAwayFrame) 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 *GoAwayFrame) 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 = GoAwayFrame{ |
|
Reserved: Reserved(raw[0]>>7 == 1), |
|
StreamID: StreamID(binary.BigEndian.Uint32(raw[0:4]) & 0x7fffffff), |
|
Code: binary.BigEndian.Uint32(raw[4:8]), |
|
Data: []byte(string(raw[8:])), |
|
} |
|
|
|
return nil |
|
} |
|
|
|
func (f *GoAwayFrame) MarshalPayload() ([]byte, error) { |
|
raw := make([]byte, 8, 8+len(f.Data)) |
|
binary.BigEndian.PutUint32(raw[:4], uint32(f.StreamID)) |
|
binary.BigEndian.PutUint32(raw[4:8], f.Code) |
|
raw = append(raw, f.Data...) |
|
|
|
return raw, nil |
|
} |
|
|
|
func (f *GoAwayFrame) MarshalBinary() ([]byte, error) { |
|
payload, err := f.MarshalPayload() |
|
if err != nil { |
|
return nil, err |
|
} |
|
|
|
f.Header.Length = len(payload) |
|
f.Header.Type = GoAwayFrameType |
|
header, err := f.Header.MarshalBinary() |
|
if err != nil { |
|
return nil, err |
|
} |
|
|
|
header = append(header, payload...) |
|
|
|
return header, nil |
|
}
|
|
|