pex_reactor.go
func (r *PEXReactor) SendAddrs(p *Peer, addrs []*NetAddress) {
	p.Send(PexChannel, struct{ PexMessage }{&pexAddrsMessage{Addrs: addrs}})
}
func (r *PEXReactor) SendAddrs(p *Peer, addrs []*NetAddress) {
	p.Send(PexChannel, struct{ PexMessage }{&pexAddrsMessage{Addrs: addrs}})
}
// SendAddrs sends addrs to the peer.