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Version: v3

Getting Started With Game Backend

You can download our sample project for C++ and games at:

git clone https://github.com/leancloud/cpp-socket-demo.git

This example project contains a simple real-time multiplayer game. Let's start the project locally:

$ make && ./cpp-socket
[UDP] Socket is listening on 4000
[TCP] Socket is listening on 4000
[HTTP] Socket is listening on 3000

Use nc to connect to the program on the TCP port:

$ nc 127.0.0.1 4000
>> 1 players online, last number is 1, you must send the next number but skip numbers which multiples of 3 or includes the digit 3.
2 (your input)
>> 2 players online, 127.0.0.1:59385 sent 2.
>> 127.0.0.1:59897 lost, 2 players online.
4 (your input)
>> 1 players online, 127.0.0.1:59385 sent 4.

In this game, you must send the following number to the server, but skip multiples of 3 or numbers containing the number 3. If you enter it incorrectly, you will be disconnected.

Deploy to Cloud Engine​

Select the application and group:

tds switch

Deploy to production:

tds deploy --prod

For more information on command line tools and local debugging, see the CLI Guide.

Connect to the Game in the Cloud​

Get the connection address by sending a request. You will need to replace the appId, group name, and environment (production or staging):

$ curl -H 'X-LC-Id: SJjoXHWuhewHKV4Ojw' 'https://shared.cloud.tds1.tapapis.cn/1.1/engine/gateway/route?groupName=udp&prod=1'

[
  {
    "name": "game",
    "protocol": "tcp",
    "publicPort": 19766,
    "publicIp": "106.75.70.96"
  }
]

Then you can connect with nc:

$ nc 106.75.70.96 19766
info

The IP and port may change whenever the Cloud Engine instance is deployed, restarted, or automatically maintained, so please check the server's current IP and port before each connection.

Continue Learning​

Next, you can read the Game Backend Architecture Reference for the recommended architecture for running a game backend on the Cloud Engine, or the Game Backend Guide for detailed integration instructions.

You can also see Cloud Engine Platform Features to learn more about the features provided by the Cloud Engine, or see a dedicated page for details on specific runtime environments at: