func (nm *networkManager) Invite(ctx *context.T, call rpc.ServerCall) error {
inviter := call.RemoteEndpoint().Name()
response := make(chan error)
nm.inviteRPCs <- Invitation{
Name: inviter,
Color: selectColor(call.Security().RemoteBlessings().PublicKey()),
Response: response,
Withdrawn: ctx.Done(),
}
if err := <-response; err != nil {
return err
}
blessings, rejected := security.RemoteBlessingNames(ctx, call.Security())
ctx.Infof("Accepted invitation from %v@%v (rejected blessings: %v)", blessings, inviter, rejected)
return nil
}
func (nm *networkManager) Give(ctx *context.T, call rpc.ServerCall, t spec.Triangle) error {
if ctx.V(3) {
blessings, rejected := security.RemoteBlessingNames(ctx, call.Security())
ctx.Infof("Took a triangle from %v@%v (rejected blessings: %v)", blessings, call.RemoteEndpoint().Name(), rejected)
}
// Transform from sender's coordinates to our coordinates.
// The assumption is that if the triangle was to the left of the
// sender's coordinate system, then it will appear on our right and
// vice-versa.
switch {
case t.X < -1:
t.X += 2
case t.X > 1:
t.X -= 2
}
nm.myScreen <- &t
return nil
}
