Pipes Valheim dedicated server logs to a Discord webhook in near-real-time, with local buffering so no lines are lost on unexpected process death.
Server output (BepInEx pipeline, Console.Out, or raw stdout — see Source config)
│
▼
BepInEx/DiscordLogBuffer.txt ← every line flushed to disk immediately
│
▼ (background thread, every N seconds)
Discord Webhook POST
│
├─ success → remove sent lines from front of buffer (FIFO)
└─ failure → leave buffer intact, retry next tick
On startup:
buffer file exists from previous run? → send as ⚠️ crash-recovery message first
On clean shutdown:
flush remaining buffer as 🛑 shutdown message
Configure Source in the config file to choose what gets captured:
| Source | What it captures | Risk |
|---|---|---|
BepInEx (default) |
Everything flowing through BepInEx's log pipeline | Safe |
Console |
Managed Console.Out writes (superset of BepInEx in some cases) |
Low |
RawStdout |
All stdout at the OS fd level — including world saves, ZDO counts, PlayFab lines that bypass BepInEx entirely | Experimental — read warning below |
RawStdout uses Linux pipe() + dup2() to replace fd 1 with a kernel pipe.
A background relay thread forwards every byte to the original stdout and extracts
lines for Discord. If the relay thread crashes or deadlocks, the pipe buffer
(~64 KB) will fill up and block all stdout writes in the entire process.
BepInEx source automatically on Windows or on any syscall failureDiscordLogSync.dll into BepInEx/plugins/BepInEx/config/com.byawn.DiscordLogSync.cfg[Discord]
Source = BepInEx
WebhookUrl = https://discord.com/api/webhooks/YOUR_ID/YOUR_TOKEN
SendIntervalSeconds = 3
MaxMessageChars = 1800
| Key | Default | Description |
|---|---|---|
Source |
BepInEx |
Log source: BepInEx, Console, or RawStdout (see above) |
WebhookUrl |
(empty) | Required. Discord webhook URL. Plugin does nothing if unset. |
SendIntervalSeconds |
3 |
Flush interval in seconds. Minimum 2 (Discord rate limit). |
MaxMessageChars |
1800 |
Max characters per Discord message. Hard Discord limit is 2000. |
BepInEx/DiscordLogBuffer.txt
Requires .NET SDK with netstandard2.1 support and a Valheim dedicated server + BepInEx installation.
The .csproj assumes the default Linux Steam path:
~/.steam/steam/steamapps/common/Valheim dedicated server
./build.sh # dotnet build -c Release
./deploy_server.sh # copy DLL + config to local server
./package.sh # zip ThunderstoreAssets + DLL for upload