Game Server disconnecting clients

January 19, 2017 260 views
Networking Ubuntu

I am running a test game server that uses Steam and UE4 engine. The server runs fine and uses UDP 27015 for querying and udp ports 7777/77778 for the client communication.

When a client connects, the query seems to work fine and the server starts sending a bunch of UDP traffic to the client and there is nothing from the client end where it ends up disconnecting after about 15-20 seconds.

After the initial connection I see in tcpdump a bunch of the following:-

03:53:05.406790 IP ubuntu1404.41954 > <client ip>.58434: UDP, length 56

Running wireshark on the client shows nothing from the server except from port 27015.

There is no firewall running on the server and other servers work fine.

Any ideas? Would DigitalOcean be dropping UDP packets maybe?

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