func (t *TcpTransport) newTcpDialer(base manet.Dialer, laddr ma.Multiaddr, doReuse bool) (*tcpDialer, error) {
// get the local net.Addr manually
la, err := manet.ToNetAddr(laddr)
if err != nil {
return nil, err // something wrong with laddr.
}
if doReuse && ReuseportIsAvailable() {
rd := reuseport.Dialer{
D: net.Dialer{
LocalAddr: la,
Timeout: base.Timeout,
},
}
return &tcpDialer{
doReuse: true,
laddr: laddr,
rd: rd,
madialer: base,
transport: t,
}, nil
}
return &tcpDialer{
doReuse: false,
laddr: laddr,
madialer: base,
transport: t,
}, nil
}
func getDialableListenAddrs(ph host.Host) ([]*net.TCPAddr, error) {
var out []*net.TCPAddr
for _, addr := range ph.Addrs() {
na, err := manet.ToNetAddr(addr)
if err != nil {
continue
}
tcp, ok := na.(*net.TCPAddr)
if ok {
out = append(out, tcp)
}
}
if len(out) == 0 {
return nil, errors.New("failed to find good external addr from peerhost")
}
return out, nil
}
func (f *Filters) AddrBlocked(a ma.Multiaddr) bool {
maddr := ma.Split(a)
if len(maddr) == 0 {
return false
}
netaddr, err := manet.ToNetAddr(maddr[0])
if err != nil {
// if we cant parse it, its probably not blocked
return false
}
netip := net.ParseIP(netaddr.String())
if netip == nil {
return false
}
f.mu.RLock()
defer f.mu.RUnlock()
for _, ft := range f.filters {
if ft.Contains(netip) {
return true
}
}
return false
}