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package main
import (
"encoding/binary"
"errors"
"fmt"
"io"
"os"
"github.com/quic-go/qpack"
)
func main() {
file, err := os.Open("example/fb-req-hq.out.0.0.0")
if err != nil {
panic(err)
}
dec := qpack.NewDecoder(emitFunc)
for {
in, err := decodeInput(file)
if err != nil {
panic(err)
}
fmt.Printf("\nRequest on stream %d:\n", in.streamID)
dec.Write(in.data)
}
}
func emitFunc(hf qpack.HeaderField) {
fmt.Printf("%#v\n", hf)
}
type input struct {
streamID uint64
data []byte
}
func decodeInput(r io.Reader) (*input, error) {
prefix := make([]byte, 12)
if _, err := io.ReadFull(r, prefix); err != nil {
return nil, errors.New("insufficient data for prefix")
}
streamID := binary.BigEndian.Uint64(prefix[:8])
length := binary.BigEndian.Uint32(prefix[8:12])
if length > (1 << 15) {
return nil, errors.New("input too long")
}
data := make([]byte, int(length))
if _, err := io.ReadFull(r, data); err != nil {
return nil, errors.New("incomplete data")
}
return &input{
streamID: streamID,
data: data,
}, nil
}
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