forked from TrueCloudLab/neoneo-go
85 lines
2 KiB
Go
85 lines
2 KiB
Go
package payload
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import (
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"time"
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"github.com/nspcc-dev/neo-go/pkg/config"
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"github.com/nspcc-dev/neo-go/pkg/io"
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)
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// Size of the payload not counting UserAgent encoding (which is at least 1 byte
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// for zero-length string).
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const minVersionSize = 27
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// List of Services offered by the node.
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const (
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nodePeerService uint64 = 1
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// BloomFilerService uint64 = 2 // Not implemented
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// PrunedNode uint64 = 3 // Not implemented
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// LightNode uint64 = 4 // Not implemented
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)
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// Version payload.
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type Version struct {
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// NetMode of the node
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Magic config.NetMode
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// currently the version of the protocol is 0
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Version uint32
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// currently 1
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Services uint64
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// timestamp
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Timestamp uint32
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// port this server is listening on
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Port uint16
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// it's used to distinguish the node from public IP
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Nonce uint32
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// client id
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UserAgent []byte
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// Height of the block chain
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StartHeight uint32
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// Whether to receive and forward
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Relay bool
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}
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// NewVersion returns a pointer to a Version payload.
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func NewVersion(magic config.NetMode, id uint32, p uint16, ua string, h uint32, r bool) *Version {
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return &Version{
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Magic: magic,
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Version: 0,
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Services: nodePeerService,
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Timestamp: uint32(time.Now().UTC().Unix()),
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Port: p,
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Nonce: id,
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UserAgent: []byte(ua),
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StartHeight: h,
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Relay: r,
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}
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}
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// DecodeBinary implements Serializable interface.
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func (p *Version) DecodeBinary(br *io.BinReader) {
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p.Magic = config.NetMode(br.ReadU32LE())
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p.Version = br.ReadU32LE()
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p.Services = br.ReadU64LE()
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p.Timestamp = br.ReadU32LE()
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p.Port = br.ReadU16LE()
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p.Nonce = br.ReadU32LE()
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p.UserAgent = br.ReadVarBytes()
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p.StartHeight = br.ReadU32LE()
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p.Relay = br.ReadBool()
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}
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// EncodeBinary implements Serializable interface.
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func (p *Version) EncodeBinary(br *io.BinWriter) {
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br.WriteU32LE(uint32(p.Magic))
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br.WriteU32LE(p.Version)
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br.WriteU64LE(p.Services)
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br.WriteU32LE(p.Timestamp)
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br.WriteU16LE(p.Port)
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br.WriteU32LE(p.Nonce)
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br.WriteVarBytes(p.UserAgent)
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br.WriteU32LE(p.StartHeight)
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br.WriteBool(p.Relay)
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}
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