Added more hard mode documentation (#148)

* ACTIVITY_JOIN_REQUEST does not have a secret

There is no secret passed to a Join Request

* Added how to respond

* Update hard-mode.md

* Added some tips

Added some helpful tips. Plan to add more as I go along.
This commit is contained in:
Lachee 2018-03-20 04:27:29 +11:00 committed by Mason Sciotti
parent e7f9396807
commit 8e0c7848a6

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@ -93,8 +93,7 @@ And third is the `ACTIVITY_JOIN_REQUEST` event:
"username": "Mason",
"discriminator": "1337",
"avatar": "a_bab14f271d565501444b2ca3be944b25"
},
"secret": "e459ca99273f59909dd16ed97865f3ad"
}
},
"evt": "ACTIVITY_JOIN_REQUEST"
}
@ -125,3 +124,41 @@ In order to receive these events, you need to [subscribe](https://discordapp.com
"cmd": "SUBSCRIBE"
}
```
To unsubscribe from these events, resend with the command `UNSUBSCRIBE`
## Responding
A discord user will request access to the game. If the ACTIVITY_JOIN_REQUEST has been subscribed too, the ACTIVITY_JOIN_REQUEST event will be sent to the host's game. Accept it with following model:
```json
{
"nonce": "5dc0c062-98c6-47a0-8922-15aerg126",
"cmd": "SEND_ACTIVITY_JOIN_INVITE",
"args":
{
"user_id": "53908232506183680"
}
}
```
To reject the request, use `CLOSE_ACTIVITY_REQUEST`:
```json
{
"nonce": "5dc0c062-98c6-47a0-8922-dasg256eafg",
"cmd": "CLOSE_ACTIVITY_REQUEST",
"args":
{
"user_id": "53908232506183680"
}
}
```
## Notes
Here are just some quick notes to help with some common troubleshooting problems.
* IPC will echo back every command you send as a response. Use this as a lock-step feature to avoid flooding messages. Can be used to validate messages such as the Presence or Subscribes.
* The pipe expects for frames to be written in a single byte array. You cannot do multiple `stream.Write(opcode);` `stream.Write(length);` as it will break the pipe. Instead create a buffer, write the data to the buffer, then send the entire buffer to the stream.
* Discord can be on any pipe ranging from `discord-ipc-0` to `discord-ipc-9`. It is a good idea to try and connect to each one and keeping the first one you connect too. For multiple clients (eg Discord and Canary), you might want to add a feature to manually select the pipe so you can more easily debug the application.
* All enums are `lower_snake_case`.
* The opcode and length in the header are `Little Endian Unsigned Integers (32bits)`. In some languages, you must convert them as they can be architecture specific.
* [Discord Rich Presence How-To](https://discordapp.com/developers/docs/rich-presence/how-to) contains a lot of the information this document doesn't. For example, it will tell you about the response payload.
* In the documentation, DISCORD_REPLY_IGNORE is just implemented the same as DISCORD_REPLY_NO.
* You can test the Join / Spectate feature by enabling them in your profile and whitelisting a test account. Use Canary to run 2 accounts on the same machine.