func (pn *ProtoNet) Dial(p pnet.Peer) (io.ReadWriteCloser, error) {
ln, ok := pn.sw[p.Id()]
if !ok {
msg := fmt.Sprintf("%s isn't listening", p.Id())
return nil, errors.New(msg)
}
conn1, conn2 := net.Pipe()
ln.accept <- conn1
return conn2, nil
}
func (s PeerSet) PopOldest() pnet.Peer {
var oldest pnet.Peer
for _, p := range s {
if oldest == nil || oldest.Get(age).(int) < p.Get(age).(int) {
oldest = p
}
}
delete(s, oldest.Id())
return oldest
}
func (gw *Gateway) Dial(dest pnet.Peer, proto string) (io.ReadWriteCloser, error) {
// See if we already have a connection with this peer.
s, err := gw.conns.NewStreamWithGroup(dest.Id())
if err != nil {
// We don't, let's create a new connection.
//TODO: Dial many/all addrs, use earliest. Like here:
//https://github.com/ipfs/go-ipfs/blob/master/p2p/net/swarm/swarm_dial.go
p, ok := dest.(*PeerInfo)
if !ok {
return nil, errors.New("Unknown pnet.Peer type")
}
m, err := ma.NewMultiaddrBytes(p.MAddrs[0])
if err != nil {
return nil, err
}
nc, err := manet.Dial(m)
if err != nil {
return nil, err
}
c, err := gw.conns.AddConn(nc)
if err != nil {
nc.Close()
return nil, err
}
gw.conns.AddConnToGroup(c, p.Id())
s, err = gw.conns.NewStreamWithGroup(p.Id())
if err != nil {
return nil, err
}
}
// Select the protocol on the new stream.
err = ms.SelectProtoOrFail(proto, s)
if err != nil {
s.Close()
}
return s, err
}