forked from TrueCloudLab/neoneo-go
41 lines
896 B
Go
41 lines
896 B
Go
package payload
|
|
|
|
import (
|
|
"github.com/CityOfZion/neo-go/pkg/core"
|
|
"github.com/CityOfZion/neo-go/pkg/io"
|
|
log "github.com/sirupsen/logrus"
|
|
)
|
|
|
|
// Headers payload.
|
|
type Headers struct {
|
|
Hdrs []*core.Header
|
|
}
|
|
|
|
// Users can at most request 2k header.
|
|
const (
|
|
maxHeadersAllowed = 2000
|
|
)
|
|
|
|
// DecodeBinary implements Serializable interface.
|
|
func (p *Headers) DecodeBinary(br *io.BinReader) {
|
|
lenHeaders := br.ReadVarUint()
|
|
|
|
// C# node does it silently
|
|
if lenHeaders > maxHeadersAllowed {
|
|
log.Warnf("received %d headers, capping to %d", lenHeaders, maxHeadersAllowed)
|
|
lenHeaders = maxHeadersAllowed
|
|
}
|
|
|
|
p.Hdrs = make([]*core.Header, lenHeaders)
|
|
|
|
for i := 0; i < int(lenHeaders); i++ {
|
|
header := &core.Header{}
|
|
header.DecodeBinary(br)
|
|
p.Hdrs[i] = header
|
|
}
|
|
}
|
|
|
|
// EncodeBinary implements Serializable interface.
|
|
func (p *Headers) EncodeBinary(bw *io.BinWriter) {
|
|
bw.WriteArray(p.Hdrs)
|
|
}
|