neoneo-go/pkg/network/payload/address.go

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package payload
import (
"io"
"net"
"strconv"
"time"
"github.com/CityOfZion/neo-go/pkg/util"
)
// AddressAndTime payload.
type AddressAndTime struct {
Timestamp uint32
Services uint64
IP [16]byte
Port uint16
}
// NewAddressAndTime creates a new AddressAndTime object.
func NewAddressAndTime(e *net.TCPAddr, t time.Time) *AddressAndTime {
aat := AddressAndTime{
Timestamp: uint32(t.UTC().Unix()),
Services: 1,
Port: uint16(e.Port),
}
copy(aat.IP[:], e.IP)
return &aat
}
// DecodeBinary implements the Payload interface.
func (p *AddressAndTime) DecodeBinary(r io.Reader) error {
br := util.BinReader{R: r}
br.ReadLE(&p.Timestamp)
br.ReadLE(&p.Services)
br.ReadBE(&p.IP)
br.ReadBE(&p.Port)
return br.Err
}
// EncodeBinary implements the Payload interface.
func (p *AddressAndTime) EncodeBinary(w io.Writer) error {
bw := util.BinWriter{W: w}
bw.WriteLE(p.Timestamp)
bw.WriteLE(p.Services)
bw.WriteBE(p.IP)
bw.WriteBE(p.Port)
return bw.Err
}
// IPPortString makes a string from IP and port specified.
func (p *AddressAndTime) IPPortString() string {
var netip net.IP = make(net.IP, 16)
copy(netip, p.IP[:])
port := strconv.Itoa(int(p.Port))
return netip.String() + ":" + port
}
// AddressList is a list with AddrAndTime.
type AddressList struct {
Addrs []*AddressAndTime
}
// DecodeBinary implements the Payload interface.
func (p *AddressList) DecodeBinary(r io.Reader) error {
br := util.BinReader{R: r}
listLen := br.ReadVarUint()
if br.Err != nil {
return br.Err
}
p.Addrs = make([]*AddressAndTime, listLen)
for i := 0; i < int(listLen); i++ {
p.Addrs[i] = &AddressAndTime{}
if err := p.Addrs[i].DecodeBinary(r); err != nil {
return err
}
}
return nil
}
// EncodeBinary implements the Payload interface.
func (p *AddressList) EncodeBinary(w io.Writer) error {
bw := util.BinWriter{W: w}
bw.WriteVarUint(uint64(len(p.Addrs)))
if bw.Err != nil {
return bw.Err
}
for _, addr := range p.Addrs {
if err := addr.EncodeBinary(w); err != nil {
return err
}
}
return nil
}