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0 votes

Hey all,

I'm trying to set up p2p multiplayer, similar to the way Terraria handles things. Trying to connect via works great, but when I try to connect to my friend's computer via his public IP, it doesn't work. My only lead is that connection_failed is triggered.

We suspected a firewall issue, but after configuring firewalls on both machines to allow the game through, the issue still occurs.

I'm using a NetworkedMultiplayerENet.

What could the issue be?

in Engine by (174 points)

I asked this question previously:

After enabling port forwarding for both tcp and udp connections, it worked for me

Having each player manually enable port forwarding isn't feasible, so I'm looking into UPNP. I found this article:

If I understand correctly, a single call to add_port_mapping() at game startup should fix this. Is it better security practice to add_port_mapping() only when hosting game, and to delete_port_mapping() when done? Or is it okay to simply leave the port mapping there?

EDIT: on second thought, this is beyond the scope of this question, so I'm opening a new thread.

You should just need port forwarding to host a server, not connect to it.

I don’t know much about upnp, sorry

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