The send function automatically sends the packet to the server and to other clients in the session but not to the player sending it.

If you want to send a packet to the server and have the server send it to everybody then:

1- When sending the packet, the peers int array should have the int 0 in it. 0 is the address of the server. With any OpCode, for this example it'll be 99.

2- In your match's RT Script:

RTSession.onPacket(99, function(packet){
RTSession.newPacket().setData(packet.getData()).setOpCode(100).setTargetPeers().send();
} 

100 being an example OpCode. If you don't set the setTargetPeers then the server will send that packet to everyone.

However, why would you want to send the player the same packet they sent to the server? What are you trying to do?

Cheers,

Omar

Hey, have you had a look at our RT example in the sample project?

It's got an example of how to do that. Here's a quick photo of sending an empty packet to all clients (Not including the sender).

Cheers,

Omar

Why do you want the player to receive the same data they sent? They can just use the data locally. 

If you really want to, and I don't think is a good idea, to send to the same player then you need to use RT Scripts like I showed up above.

-Send packet to server

-Let server send to all clients.

Again, what point in client sending data to server and receiving them? You're wasting bandwidth and potentially will lose packets and not see the effect reflected in game.

Cheers,
Omar