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remove string from multicast announcement format

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This commit is contained in:
Arceliar 2021-06-25 21:27:29 -05:00
parent 3b38ed082f
commit d1dfe38683
1 changed files with 15 additions and 4 deletions
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19
src/multicast/multicast.go
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@ -4,6 +4,7 @@ import (
"bytes"
"context"
"crypto/ed25519"
"encoding/binary"
"encoding/hex"
"fmt"
"net"
@ -307,7 +308,10 @@ func (m *Multicast) _announce() {
a.Zone = ""
destAddr.Zone = iface.Name
msg := append([]byte(nil), m.core.GetSelf().Key...)
msg = append(msg, a.String()...)
msg = append(msg, a.IP...)
pbs := make([]byte, 2)
binary.BigEndian.PutUint16(pbs, uint16(a.Port))
msg = append(msg, pbs...)
_, _ = m.sock.WriteTo(msg, nil, destAddr)
}
if info.interval.Seconds() < 15 {
@ -354,13 +358,20 @@ func (m *Multicast) listen() {
if bytes.Equal(key, m.core.GetSelf().Key) {
continue // don't bother trying to peer with self
}
anAddr := string(bs[ed25519.PublicKeySize:nBytes])
addr, err := net.ResolveTCPAddr("tcp6", anAddr)
begin := ed25519.PublicKeySize
end := nBytes - 2
if end <= begin {
continue // malformed address
}
ip := bs[begin:end]
port := binary.BigEndian.Uint16(bs[end:nBytes])
anAddr := net.TCPAddr{IP: ip, Port: int(port)}
addr, err := net.ResolveTCPAddr("tcp6", anAddr.String())
if err != nil {
continue
}
from := fromAddr.(*net.UDPAddr)
if addr.IP.String() != from.IP.String() {
if !from.IP.Equal(addr.IP) {
continue
}
var interfaces map[string]interfaceInfo