Lua Error Logging

<cat>Dev</cat> # Lua error logging Sometimes it is useful for server owners to receive and log Lua errors that occur on their servers. This can be done via the `lua_error_url` console variable on the server. Setting the <page>ConVar</page> to a link will cause the clients connected to the server and the server itself report all Lua errors they encounter to the given URL via a POST request. # Data format Each POST request will have the following data in its body, formatted as GET parameters: | key | description | --- | --- | | error | The error string itself | | stack | The stack trace of the error | | realm | Which Lua <page text="realm">States</page> produced the error, possible values are: `server`, `client` | | addon | The ID of the Workshop addon this error was caused by, if the game was able to determine that, `0` otherwise | | hash | CRC32 hash of the `error`+`stack`+`realm`+`addon` fields | | gamemode | The currently running gamemode of the server (folder name), example: `sandbox` | | gmv | The version of the game, example: `2020.05.20` | | os | The operating system of the client/server the error happened on, possible values are `windows`, `osx`, `linux` | | ds | Whether this error happened on a dedicated server (`true`), or on a listen server/singleplayer (`false`) | | v | Version of the `lua_error_url` system, this will always be `4` |

# Lua error logging
Sometimes it is useful for server owners to receive and log Lua errors that occur on their servers.

This can be done via the `lua_error_url` console variable on the server.

Setting the <page>ConVar</page> to a link will cause the clients connected to the server and the server itself report all Lua errors they encounter to the given URL via a POST request.

# Data format

Each POST request will have the following data in its body, formatted as GET parameters:

| key | description
| --- | --- |
| error | The error string itself |
| stack | The stack trace of the error |
| realm | Which Lua <page text="realm">States</page> produced the error, possible values are: `server`, `client` |
| addon | The ID of the Workshop addon this error was caused by, if the game was able to determine that, `0` otherwise |
| hash | CRC32 hash of the `error`+`stack`+`realm`+`addon` fields |
| gamemode | The currently running gamemode of the server (folder name), example: `sandbox` |
| gmv | The version of the game, example: `2020.05.20` |
| os | The operating system of the client/server the error happened on, possible values are `windows`, `osx`, `linux` |
| ds | Whether this error happened on a dedicated server (`true`), or on a listen server/singleplayer (`false`) |
| v | Version of the `lua_error_url` system, this will always be `4` |

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