WIP

Agent/Phantom.Agent.Minecraft/Instance/InstanceProcess.cs

@@ -1,5 +1,4 @@
-using System.Diagnostics;
-using Phantom.Utils.Collections;
+using Phantom.Utils.Collections;
 using Phantom.Utils.Runtime;
 
 namespace Phantom.Agent.Minecraft.Instance; 
@@ -19,10 +18,8 @@ public sealed class InstanceProcess : IDisposable {
 	internal InstanceProcess(InstanceProperties instanceProperties, Process process) {
 		this.InstanceProperties = instanceProperties;
 		this.process = process;
-		this.process.EnableRaisingEvents = true;
 		this.process.Exited += ProcessOnExited;
-		this.process.OutputDataReceived += HandleOutputLine;
-		this.process.ErrorDataReceived += HandleOutputLine;
+		this.process.OutputReceived += ProcessOutputReceived;
 	}
 
 	public async Task SendCommand(string command, CancellationToken cancellationToken) {
@@ -41,11 +38,9 @@ public sealed class InstanceProcess : IDisposable {
 		OutputEvent -= listener;
 	}
 
-	private void HandleOutputLine(object sender, DataReceivedEventArgs args) {
-		if (args.Data is {} line) {
-			outputBuffer.Add(line);
-			OutputEvent?.Invoke(this, line);
-		}
+	private void ProcessOutputReceived(object? sender, Process.Output output) {
+		outputBuffer.Add(output.Line);
+		OutputEvent?.Invoke(this, output.Line);
 	}
 
 	private void ProcessOnExited(object? sender, EventArgs e) {

Agent/Phantom.Agent.Minecraft/Launcher/BaseLauncher.cs

@@ -1,15 +1,15 @@
-using System.Diagnostics;
-using System.Text;
+using System.Text;
 using Kajabity.Tools.Java;
 using Phantom.Agent.Minecraft.Instance;
 using Phantom.Agent.Minecraft.Java;
 using Phantom.Agent.Minecraft.Server;
 using Phantom.Common.Minecraft;
+using Phantom.Utils.Runtime;
 using Serilog;
 
 namespace Phantom.Agent.Minecraft.Launcher;
 
-public abstract class BaseLauncher {
+public abstract class BaseLauncher : IServerLauncher {
 	private readonly InstanceProperties instanceProperties;
 
 	protected string MinecraftVersion => instanceProperties.ServerVersion;
@@ -34,7 +34,7 @@ public abstract class BaseLauncher {
 
 		ServerJarInfo? serverJar;
 		try {
-			serverJar = await PrepareServerJar(logger, vanillaServerJarPath, instanceProperties.InstanceFolder, cancellationToken);
+			serverJar = await PrepareServerJar(logger, vanillaServerJarPath, cancellationToken);
 		} catch (OperationCanceledException) {
 			throw;
 		} catch (Exception e) {
@@ -55,20 +55,17 @@ public abstract class BaseLauncher {
 			return new LaunchResult.CouldNotConfigureMinecraftServer();
 		}
 		
-		var startInfo = new ProcessStartInfo {
+		var processConfigurator = new ProcessConfigurator {
 			FileName = javaRuntimeExecutable.ExecutablePath,
 			WorkingDirectory = instanceProperties.InstanceFolder,
-			RedirectStandardInput = true,
-			RedirectStandardOutput = true,
-			RedirectStandardError = true,
-			UseShellExecute = false,
-			CreateNoWindow = false
+			RedirectInput = true,
+			UseShellExecute = false
 		};
 		
 		var jvmArguments = new JvmArgumentBuilder(instanceProperties.JvmProperties, instanceProperties.JvmArguments);
 		CustomizeJvmArguments(jvmArguments);
 
-		var processArguments = startInfo.ArgumentList;
+		var processArguments = processConfigurator.ArgumentList;
 		jvmArguments.Build(processArguments);
 		
 		foreach (var extraArgument in serverJar.ExtraArgs) {
@@ -79,13 +76,11 @@ public abstract class BaseLauncher {
 		processArguments.Add(serverJar.FilePath);
 		processArguments.Add("nogui");
 
-		var process = new Process { StartInfo = startInfo };
+		var process = processConfigurator.CreateProcess();
 		var instanceProcess = new InstanceProcess(instanceProperties, process);
 
 		try {
 			process.Start();
-			process.BeginOutputReadLine();
-			process.BeginErrorReadLine();
 		} catch (Exception launchException) {
 			logger.Error(launchException, "Caught exception launching the server process.");
 			
@@ -103,7 +98,7 @@ public abstract class BaseLauncher {
 
 	private protected virtual void CustomizeJvmArguments(JvmArgumentBuilder arguments) {}
 
-	private protected virtual Task<ServerJarInfo> PrepareServerJar(ILogger logger, string serverJarPath, string instanceFolderPath, CancellationToken cancellationToken) {
+	private protected virtual Task<ServerJarInfo> PrepareServerJar(ILogger logger, string serverJarPath, CancellationToken cancellationToken) {
 		return Task.FromResult(new ServerJarInfo(serverJarPath));
 	}
 

Agent/Phantom.Agent.Minecraft/Launcher/IServerLauncher.cs

@@ -0,0 +1,8 @@
+using Phantom.Agent.Minecraft.Server;
+using Serilog;
+
+namespace Phantom.Agent.Minecraft.Launcher;
+
+public interface IServerLauncher {
+	Task<LaunchResult> Launch(ILogger logger, LaunchServices services, EventHandler<DownloadProgressEventArgs> downloadProgressEventHandler, CancellationToken cancellationToken);
+}

Agent/Phantom.Agent.Minecraft/Launcher/Types/FabricLauncher.cs

@@ -0,0 +1,55 @@
+using System.Collections.Immutable;
+using Phantom.Agent.Minecraft.Instance;
+using Phantom.Utils.IO;
+using Serilog;
+
+namespace Phantom.Agent.Minecraft.Launcher.Types; 
+
+public sealed class FabricLauncher : BaseLauncher {
+	public FabricLauncher(InstanceProperties instanceProperties) : base(instanceProperties) {}
+	
+	private protected override async Task<ServerJarInfo> PrepareServerJar(ILogger logger, string serverJarPath, CancellationToken cancellationToken) {
+		var serverJarParentFolderPath = Directory.GetParent(serverJarPath);
+		if (serverJarParentFolderPath == null) {
+			throw new ArgumentException("Could not get parent folder from: " + serverJarPath, nameof(serverJarPath));
+		}
+		
+		var launcherJarPath = Path.Combine(serverJarParentFolderPath.FullName, "fabric.jar");
+		
+		if (!File.Exists(launcherJarPath)) {
+			await DownloadLauncher(logger, launcherJarPath, cancellationToken);
+		}
+
+		return new ServerJarInfo(launcherJarPath, ImmutableArray.Create("-Dfabric.installer.server.gameJar=" + Paths.NormalizeSlashes(serverJarPath)));
+	}
+
+	private async Task DownloadLauncher(ILogger logger, string targetFilePath, CancellationToken cancellationToken) {
+		// TODO customizable loader version, probably with a dedicated temporary folder
+		string installerUrl = $"https://meta.fabricmc.net/v2/versions/loader/{MinecraftVersion}/stable/stable/server/jar";
+		logger.Information("Downloading Fabric launcher from: {Url}", installerUrl);
+		
+		using var http = new HttpClient();
+		
+		var response = await http.GetAsync(installerUrl, HttpCompletionOption.ResponseHeadersRead, cancellationToken);
+		response.EnsureSuccessStatusCode();
+		
+		try {
+			await using var fileStream = new FileStream(targetFilePath, FileMode.CreateNew, FileAccess.Write, FileShare.Read);
+			await using var responseStream = await response.Content.ReadAsStreamAsync(cancellationToken);
+			await responseStream.CopyToAsync(fileStream, cancellationToken);
+		} catch (Exception) {
+			TryDeleteLauncherAfterFailure(logger, targetFilePath);
+			throw;
+		}
+	}
+
+	private static void TryDeleteLauncherAfterFailure(ILogger logger, string filePath) {
+		if (File.Exists(filePath)) {
+			try {
+				File.Delete(filePath);
+			} catch (Exception e) {
+				logger.Warning(e, "Could not clean up partially downloaded Fabric launcher: {FilePath}", filePath);
+			}
+		}
+	}
+}

Agent/Phantom.Agent.Minecraft/Launcher/Types/ForgeLauncher.cs

@@ -0,0 +1,12 @@
+using Phantom.Agent.Minecraft.Instance;
+using Phantom.Agent.Minecraft.Java;
+
+namespace Phantom.Agent.Minecraft.Launcher.Types; 
+
+public class ForgeLauncher : BaseLauncher {
+	public ForgeLauncher(InstanceProperties instanceProperties) : base(instanceProperties) {}
+	
+	private protected override void CustomizeJvmArguments(JvmArgumentBuilder arguments) {
+		arguments.AddProperty("terminal.ansi", "true"); // TODO
+	}
+}

Agent/Phantom.Agent.Minecraft/Launcher/Types/InvalidLauncher.cs

@@ -0,0 +1,14 @@
+using Phantom.Agent.Minecraft.Server;
+using Serilog;
+
+namespace Phantom.Agent.Minecraft.Launcher.Types; 
+
+public sealed class InvalidLauncher : IServerLauncher {
+	public static InvalidLauncher Instance { get; } = new ();
+	
+	private InvalidLauncher() {}
+	
+	public Task<LaunchResult> Launch(ILogger logger, LaunchServices services, EventHandler<DownloadProgressEventArgs> downloadProgressEventHandler, CancellationToken cancellationToken) {
+		return Task.FromResult<LaunchResult>(new LaunchResult.CouldNotPrepareMinecraftServerLauncher());
+	}
+}

Agent/Phantom.Agent.Services/Backups/BackupCompressor.cs

@@ -1,5 +1,4 @@
-using System.Diagnostics;
-using Phantom.Common.Logging;
+using Phantom.Common.Logging;
 using Phantom.Utils.Runtime;
 using Serilog;
 
@@ -41,7 +40,7 @@ static class BackupCompressor {
 			return false;
 		}
 
-		var startInfo = new ProcessStartInfo {
+		var launcher = new ProcessConfigurator {
 			FileName = "zstd",
 			WorkingDirectory = workingDirectory,
 			ArgumentList = {
@@ -57,14 +56,14 @@ static class BackupCompressor {
 			}
 		};
 
-		static void OnZstdOutput(object? sender, DataReceivedEventArgs e) {
-			if (!string.IsNullOrWhiteSpace(e.Data)) {
-				ZstdLogger.Debug("[Output] {Line}", e.Data);
+		static void OnZstdOutput(object? sender, Process.Output output) {
+			if (!string.IsNullOrWhiteSpace(output.Line)) {
+				ZstdLogger.Debug("[Output] {Line}", output.Line);
 			}
 		}
 
-		var process = new OneShotProcess(ZstdLogger, startInfo);
-		process.Output += OnZstdOutput;
+		var process = new OneShotProcess(ZstdLogger, launcher);
+		process.OutputReceived += OnZstdOutput;
 		return await process.Run(cancellationToken);
 	}
 }

Agent/Phantom.Agent.Services/Backups/BackupServerCommandDispatcher.cs

@@ -1,6 +1,7 @@
 using System.Text.RegularExpressions;
 using Phantom.Agent.Minecraft.Command;
 using Phantom.Agent.Minecraft.Instance;
+using Phantom.Utils.Runtime;
 using Serilog;
 
 namespace Phantom.Agent.Services.Backups;
@@ -13,9 +14,9 @@ sealed partial class BackupServerCommandDispatcher : IDisposable {
 	private readonly InstanceProcess process;
 	private readonly CancellationToken cancellationToken;
 
-	private readonly TaskCompletionSource automaticSavingDisabled = new ();
-	private readonly TaskCompletionSource savedTheGame = new ();
-	private readonly TaskCompletionSource automaticSavingEnabled = new ();
+	private readonly TaskCompletionSource automaticSavingDisabled = Tasks.CreateCompletionSource();
+	private readonly TaskCompletionSource savedTheGame = Tasks.CreateCompletionSource();
+	private readonly TaskCompletionSource automaticSavingEnabled = Tasks.CreateCompletionSource();
 
 	public BackupServerCommandDispatcher(ILogger logger, InstanceProcess process, CancellationToken cancellationToken) {
 		this.logger = logger;

Agent/Phantom.Agent.Services/Instances/Instance.cs

@@ -18,15 +18,10 @@ sealed class Instance : IDisposable {
 		return prefix[..prefix.IndexOf('-')] + "/" + Interlocked.Increment(ref loggerSequenceId);
 	}
 
-	public static Instance Create(InstanceConfiguration configuration, InstanceServices services, BaseLauncher launcher) {
-		var instance = new Instance(configuration, services, launcher);
-		instance.SetStatus(instance.currentStatus);
-		return instance;
-	}
+	private InstanceServices Services { get; }
 	
 	public InstanceConfiguration Configuration { get; private set; }
-	private InstanceServices Services { get; }
-	private BaseLauncher Launcher { get; set; }
+	private IServerLauncher Launcher { get; set; }
 
 	private readonly string shortName;
 	private readonly ILogger logger;
@@ -41,26 +36,38 @@ sealed class Instance : IDisposable {
 	
 	public event EventHandler? IsRunningChanged; 
 
-	private Instance(InstanceConfiguration configuration, InstanceServices services, BaseLauncher launcher) {
+	public Instance(InstanceServices services, InstanceConfiguration configuration, IServerLauncher launcher) {
 		this.shortName = GetLoggerName(configuration.InstanceGuid);
 		this.logger = PhantomLogger.Create<Instance>(shortName);
 
-		this.Configuration = configuration;
 		this.Services = services;
+		this.Configuration = configuration;
 		this.Launcher = launcher;
 		
 		this.currentState = new InstanceNotRunningState();
 		this.currentStatus = InstanceStatus.NotRunning;
 	}
 
-	private void SetStatus(IInstanceStatus status) {
+	private void TryUpdateStatus(string taskName, Func<Task> getUpdateTask) {
 		int myStatusUpdateCounter = Interlocked.Increment(ref statusUpdateCounter);
 		
-		Services.TaskManager.Run("Report status of instance " + shortName + " as " + status.GetType().Name, async () => {
+		Services.TaskManager.Run(taskName, async () => {
 			if (myStatusUpdateCounter == statusUpdateCounter) {
+				await getUpdateTask();
+			}
+		});
+	}
+
+	public void ReportLastStatus() {
+		TryUpdateStatus("Report last status of instance " + shortName, async () => {
+			await ServerMessaging.Send(new ReportInstanceStatusMessage(Configuration.InstanceGuid, currentStatus));
+		});
+	}
+
+	private void ReportAndSetStatus(IInstanceStatus status) {
+		TryUpdateStatus("Report status of instance " + shortName + " as " + status.GetType().Name, async () => {
 			currentStatus = status;
 			await ServerMessaging.Send(new ReportInstanceStatusMessage(Configuration.InstanceGuid, status));
-			}
 		});
 	}
 
@@ -94,7 +101,7 @@ sealed class Instance : IDisposable {
 		return newStateAndResult.Result;
 	}
 
-	public async Task Reconfigure(InstanceConfiguration configuration, BaseLauncher launcher, CancellationToken cancellationToken) {
+	public async Task Reconfigure(InstanceConfiguration configuration, IServerLauncher launcher, CancellationToken cancellationToken) {
 		await stateTransitioningActionSemaphore.WaitAsync(cancellationToken);
 		try {
 			Configuration = configuration;
@@ -147,7 +154,7 @@ sealed class Instance : IDisposable {
 		private readonly Instance instance;
 		private readonly CancellationToken shutdownCancellationToken;
 		
-		public InstanceContextImpl(Instance instance, CancellationToken shutdownCancellationToken) : base(instance.Configuration, instance.Launcher, instance.Services) {
+		public InstanceContextImpl(Instance instance, CancellationToken shutdownCancellationToken) : base(instance.Services, instance.Configuration, instance.Launcher) {
 			this.instance = instance;
 			this.shutdownCancellationToken = shutdownCancellationToken;
 		}
@@ -156,7 +163,7 @@ sealed class Instance : IDisposable {
 		public override string ShortName => instance.shortName;
 
 		public override void SetStatus(IInstanceStatus newStatus) {
-			instance.SetStatus(newStatus);
+			instance.ReportAndSetStatus(newStatus);
 		}
 
 		public override void ReportEvent(IInstanceEvent instanceEvent) {

Agent/Phantom.Agent.Services/Instances/InstanceContext.cs

@@ -6,17 +6,17 @@ using Serilog;
 namespace Phantom.Agent.Services.Instances;
 
 abstract class InstanceContext {
-	public InstanceConfiguration Configuration { get; }
-	public BaseLauncher Launcher { get; }
 	public InstanceServices Services { get; }
+	public InstanceConfiguration Configuration { get; }
+	public IServerLauncher Launcher { get; }
 	
 	public abstract ILogger Logger { get; }
 	public abstract string ShortName { get; }
 
-	protected InstanceContext(InstanceConfiguration configuration, BaseLauncher launcher, InstanceServices services) {
+	protected InstanceContext(InstanceServices services, InstanceConfiguration configuration, IServerLauncher launcher) {
+		Services = services;
 		Configuration = configuration;
 		Launcher = launcher;
-		Services = services;
 	}
 
 	public abstract void SetStatus(IInstanceStatus newStatus);

Agent/Phantom.Agent.Services/Instances/InstanceSessionManager.cs

@@ -27,7 +27,6 @@ sealed class InstanceSessionManager : IDisposable {
 	private readonly AgentInfo agentInfo;
 	private readonly string basePath;
 
-	private readonly MinecraftServerExecutables minecraftServerExecutables;
 	private readonly InstanceServices instanceServices;
 	private readonly Dictionary<Guid, Instance> instances = new ();
 
@@ -38,11 +37,12 @@ sealed class InstanceSessionManager : IDisposable {
 	public InstanceSessionManager(AgentInfo agentInfo, AgentFolders agentFolders, JavaRuntimeRepository javaRuntimeRepository, TaskManager taskManager, BackupManager backupManager) {
 		this.agentInfo = agentInfo;
 		this.basePath = agentFolders.InstancesFolderPath;
-		this.minecraftServerExecutables = new MinecraftServerExecutables(agentFolders.ServerExecutableFolderPath);
 		this.shutdownCancellationToken = shutdownCancellationTokenSource.Token;
 		
+		var minecraftServerExecutables = new MinecraftServerExecutables(agentFolders.ServerExecutableFolderPath);
 		var launchServices = new LaunchServices(minecraftServerExecutables, javaRuntimeRepository);
 		var portManager = new PortManager(agentInfo.AllowedServerPorts, agentInfo.AllowedRconPorts);
+		
 		this.instanceServices = new InstanceServices(taskManager, portManager, backupManager, launchServices);
 	}
 
@@ -71,7 +71,7 @@ sealed class InstanceSessionManager : IDisposable {
 		});
 	}
 
-	public async Task<InstanceActionResult<ConfigureInstanceResult>> Configure(InstanceConfiguration configuration, InstanceLaunchProperties launchProperties, bool launchNow) {
+	public async Task<InstanceActionResult<ConfigureInstanceResult>> Configure(InstanceConfiguration configuration, InstanceLaunchProperties launchProperties, bool launchNow, bool alwaysReportStatus) {
 		return await AcquireSemaphoreAndRun(async () => {
 			var instanceGuid = configuration.InstanceGuid;
 			var instanceFolder = Path.Combine(basePath, instanceGuid.ToString());
@@ -94,16 +94,26 @@ sealed class InstanceSessionManager : IDisposable {
 				launchProperties
 			);
 
-			BaseLauncher launcher = new VanillaLauncher(properties);
+			IServerLauncher launcher = configuration.MinecraftServerKind switch {
+				MinecraftServerKind.Vanilla => new VanillaLauncher(properties),
+				MinecraftServerKind.Fabric  => new FabricLauncher(properties),
+				_                           => InvalidLauncher.Instance
+			};
 
 			if (instances.TryGetValue(instanceGuid, out var instance)) {
 				await instance.Reconfigure(configuration, launcher, shutdownCancellationToken);
 				Logger.Information("Reconfigured instance \"{Name}\" (GUID {Guid}).", configuration.InstanceName, configuration.InstanceGuid);
+				
+				if (alwaysReportStatus) {
+					instance.ReportLastStatus();
+				}
 			}
 			else {
-				instances[instanceGuid] = instance = Instance.Create(configuration, instanceServices, launcher);
-				instance.IsRunningChanged += OnInstanceIsRunningChanged;
+				instances[instanceGuid] = instance = new Instance(instanceServices, configuration, launcher);
 				Logger.Information("Created instance \"{Name}\" (GUID {Guid}).", configuration.InstanceName, configuration.InstanceGuid);
+				
+				instance.ReportLastStatus();
+				instance.IsRunningChanged += OnInstanceIsRunningChanged;
 			}
 
 			if (launchNow) {

Agent/Phantom.Agent.Services/Rpc/MessageListener.cs

@@ -33,7 +33,7 @@ public sealed class MessageListener : IMessageToAgentListener {
 		}
 		
 		foreach (var configureInstanceMessage in message.InitialInstanceConfigurations) {
-			var result = await HandleConfigureInstance(configureInstanceMessage);
+			var result = await HandleConfigureInstance(configureInstanceMessage, alwaysReportStatus: true);
 			if (!result.Is(ConfigureInstanceResult.Success)) {
 				ShutdownAfterConfigurationFailed(configureInstanceMessage.Configuration);
 				return NoReply.Instance;
@@ -59,8 +59,12 @@ public sealed class MessageListener : IMessageToAgentListener {
 		return Task.FromResult(NoReply.Instance);
 	}
 	
+	private Task<InstanceActionResult<ConfigureInstanceResult>> HandleConfigureInstance(ConfigureInstanceMessage message, bool alwaysReportStatus) {
+		return agent.InstanceSessionManager.Configure(message.Configuration, message.LaunchProperties, message.LaunchNow, alwaysReportStatus);
+	}
+	
 	public async Task<InstanceActionResult<ConfigureInstanceResult>> HandleConfigureInstance(ConfigureInstanceMessage message) {
-		return await agent.InstanceSessionManager.Configure(message.Configuration, message.LaunchProperties, message.LaunchNow);
+		return await HandleConfigureInstance(message, alwaysReportStatus: false);
 	}
 
 	public async Task<InstanceActionResult<LaunchInstanceResult>> HandleLaunchInstance(LaunchInstanceMessage message) {

Common/Phantom.Common.Data/Minecraft/MinecraftServerKind.cs

@@ -1,5 +1,6 @@
 namespace Phantom.Common.Data.Minecraft; 
 
 public enum MinecraftServerKind : ushort {
-	Vanilla = 1
+	Vanilla = 1,
+	Fabric = 2
 }

Common/Phantom.Common.Logging/Phantom.Common.Logging.csproj

@@ -8,6 +8,7 @@
   
   <ItemGroup>
     <PackageReference Include="Serilog" />
+    <PackageReference Include="Serilog.Sinks.Async" />
     <PackageReference Include="Serilog.Sinks.Console" />
   </ItemGroup>
 

Common/Phantom.Common.Logging/PhantomLogger.cs

@@ -18,7 +18,7 @@ public static class PhantomLogger {
 		       .MinimumLevel.Override("Microsoft.EntityFrameworkCore.Database.Command", DefaultLogLevel.Coerce(LogEventLevel.Warning))
 		       .Filter.ByExcluding(static e => e.Exception is OperationCanceledException)
 		       .Enrich.FromLogContext()
-		       .WriteTo.Console(outputTemplate: template, formatProvider: CultureInfo.InvariantCulture, theme: AnsiConsoleTheme.Literate)
+		       .WriteTo.Async(c => c.Console(outputTemplate: template, formatProvider: CultureInfo.InvariantCulture, theme: AnsiConsoleTheme.Literate))
 		       .CreateLogger();
 	}
 

Packages.props

@@ -20,6 +20,7 @@
   <ItemGroup>
     <PackageReference Update="Serilog"               Version="2.12.0" />
     <PackageReference Update="Serilog.AspNetCore"    Version="6.1.0" />
+    <PackageReference Update="Serilog.Sinks.Async"   Version="1.5.0" />
     <PackageReference Update="Serilog.Sinks.Console" Version="4.1.0" />
   </ItemGroup>
   

Server/Phantom.Server.Services/Rpc/MessageToServerListener.cs

@@ -9,6 +9,7 @@ using Phantom.Server.Services.Agents;
 using Phantom.Server.Services.Events;
 using Phantom.Server.Services.Instances;
 using Phantom.Utils.Rpc.Message;
+using Phantom.Utils.Runtime;
 
 namespace Phantom.Server.Services.Rpc;
 
@@ -21,7 +22,7 @@ public sealed class MessageToServerListener : IMessageToServerListener {
 	private readonly InstanceLogManager instanceLogManager;
 	private readonly EventLog eventLog;
 
-	private readonly TaskCompletionSource<Guid> agentGuidWaiter = new ();
+	private readonly TaskCompletionSource<Guid> agentGuidWaiter = Tasks.CreateCompletionSource<Guid>();
 
 	public bool IsDisposed { get; private set; }
 

Utils/Phantom.Utils.Rpc/Message/MessageReplyTracker.cs

@@ -1,4 +1,5 @@
 using System.Collections.Concurrent;
+using Phantom.Utils.Runtime;
 using Serilog;
 
 namespace Phantom.Utils.Rpc.Message;
@@ -15,7 +16,7 @@ public sealed class MessageReplyTracker {
 
 	public uint RegisterReply() {
 		var sequenceId = Interlocked.Increment(ref lastSequenceId);
-		replyTasks[sequenceId] = new TaskCompletionSource<byte[]>(TaskCreationOptions.None);
+		replyTasks[sequenceId] = Tasks.CreateCompletionSource<byte[]>();
 		return sequenceId;
 	}
 

Utils/Phantom.Utils.Rpc/RpcRuntime.cs

@@ -43,7 +43,11 @@ public abstract class RpcRuntime<TSocket> where TSocket : ThreadSafeSocket, new(
 		Connect(socket);
 
 		void RunTask() {
+			try {
 				Run(socket, replyTracker, taskManager);
+			} catch (Exception e) {
+				runtimeLogger.Error(e, "Caught exception in RPC thread.");
+			}
 		}
 		
 		try {

Utils/Phantom.Utils.Runtime/OneShotProcess.cs

@@ -1,30 +1,24 @@
-using System.Diagnostics;
-using Serilog;
+using Serilog;
 
 namespace Phantom.Utils.Runtime;
 
 public sealed class OneShotProcess {
 	private readonly ILogger logger;
-	private readonly ProcessStartInfo startInfo;
+	private readonly ProcessConfigurator configurator;
 	
-	public event DataReceivedEventHandler? Output;
+	public event EventHandler<Process.Output>? OutputReceived;
 	
-	public OneShotProcess(ILogger logger, ProcessStartInfo startInfo) {
+	public OneShotProcess(ILogger logger, ProcessConfigurator configurator) {
 		this.logger = logger;
-		this.startInfo = startInfo;
-		this.startInfo.RedirectStandardOutput = true;
-		this.startInfo.RedirectStandardError = true;
+		this.configurator = configurator;
 	}
 
 	public async Task<bool> Run(CancellationToken cancellationToken) {
-		using var process = new Process { StartInfo = startInfo };
-		process.OutputDataReceived += Output;
-		process.ErrorDataReceived += Output;
+		using var process = configurator.CreateProcess();
+		process.OutputReceived += OutputReceived;
 
 		try {
 			process.Start();
-			process.BeginOutputReadLine();
-			process.BeginErrorReadLine();
 		} catch (Exception e) {
 			logger.Error(e, "Caught exception launching process.");
 			return false;

Utils/Phantom.Utils.Runtime/Process.cs

@@ -0,0 +1,92 @@
+using System.Diagnostics;
+
+namespace Phantom.Utils.Runtime;
+
+public sealed class Process : IDisposable {
+	public readonly record struct Output(string Line, bool IsError);
+	
+	public event EventHandler<Output>? OutputReceived;
+	
+	public event EventHandler Exited {
+		add {
+			wrapped.EnableRaisingEvents = true;
+			wrapped.Exited += value;
+		}
+		remove {
+			wrapped.Exited -= value;
+		}
+	}
+
+	public bool HasExited => wrapped.HasExited;
+	public int ExitCode => wrapped.ExitCode;
+	public StreamWriter StandardInput => wrapped.StandardInput;
+
+	private readonly System.Diagnostics.Process wrapped;
+
+	internal Process(System.Diagnostics.Process wrapped) {
+		this.wrapped = wrapped;
+	}
+
+	public void Start() {
+		if (!OperatingSystem.IsWindows()) {
+			this.wrapped.OutputDataReceived += OnStandardOutputDataReceived;
+			this.wrapped.ErrorDataReceived += OnStandardErrorDataReceived;
+		}
+			
+		this.wrapped.Start();
+
+		// https://github.com/dotnet/runtime/issues/81896
+		if (OperatingSystem.IsWindows()) {
+			Task.Factory.StartNew(ReadStandardOutputSynchronously, TaskCreationOptions.LongRunning);
+			Task.Factory.StartNew(ReadStandardErrorSynchronously, TaskCreationOptions.LongRunning);
+		}
+		else {
+			this.wrapped.BeginOutputReadLine();
+			this.wrapped.BeginErrorReadLine();
+		}
+	}
+
+	private void OnStandardOutputDataReceived(object sender, DataReceivedEventArgs e) {
+		OnStandardStreamDataReceived(e.Data, isError: false);
+	}
+
+	private void OnStandardErrorDataReceived(object sender, DataReceivedEventArgs e) {
+		OnStandardStreamDataReceived(e.Data, isError: true);
+	}
+
+	private void OnStandardStreamDataReceived(string? line, bool isError) {
+		if (line != null) {
+			OutputReceived?.Invoke(this, new Output(line, isError));
+		}
+	}
+
+	private void ReadStandardOutputSynchronously() {
+		ReadStandardStreamSynchronously(wrapped.StandardOutput, isError: false);
+	}
+
+	private void ReadStandardErrorSynchronously() {
+		ReadStandardStreamSynchronously(wrapped.StandardError, isError: true);
+	}
+
+	private void ReadStandardStreamSynchronously(StreamReader reader, bool isError) {
+		try {
+			while (reader.ReadLine() is {} line) {
+				OutputReceived?.Invoke(this, new Output(line, isError));
+			}
+		} catch (ObjectDisposedException) {
+			// Ignore.
+		}
+	}
+
+	public Task WaitForExitAsync(CancellationToken cancellationToken) {
+		return wrapped.WaitForExitAsync(cancellationToken);
+	}
+
+	public void Kill(bool entireProcessTree = false) {
+		wrapped.Kill(entireProcessTree);
+	}
+
+	public void Dispose() {
+		wrapped.Dispose();
+	}
+}

Utils/Phantom.Utils.Runtime/ProcessConfigurator.cs

@@ -0,0 +1,37 @@
+using System.Collections.ObjectModel;
+using System.Diagnostics;
+
+namespace Phantom.Utils.Runtime; 
+
+public sealed class ProcessConfigurator {
+	private readonly ProcessStartInfo startInfo = new () {
+		RedirectStandardOutput = true,
+		RedirectStandardError = true
+	};
+	
+	public string FileName {
+		get => startInfo.FileName;
+		set => startInfo.FileName = value;
+	}
+
+	public Collection<string> ArgumentList => startInfo.ArgumentList;
+
+	public string WorkingDirectory {
+		get => startInfo.WorkingDirectory;
+		set => startInfo.WorkingDirectory = value;
+	}
+
+	public bool RedirectInput {
+		get => startInfo.RedirectStandardInput;
+		set => startInfo.RedirectStandardInput = value;
+	}
+	
+	public bool UseShellExecute {
+		get => startInfo.UseShellExecute;
+		set => startInfo.UseShellExecute = value;
+	}
+
+	public Process CreateProcess() {
+		return new Process(new System.Diagnostics.Process { StartInfo = startInfo });
+	}
+}

Utils/Phantom.Utils.Runtime/Tasks.cs

@@ -0,0 +1,11 @@
+namespace Phantom.Utils.Runtime; 
+
+public static class Tasks {
+	public static TaskCompletionSource CreateCompletionSource() {
+		return new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously);
+	}
+
+	public static TaskCompletionSource<T> CreateCompletionSource<T>() {
+		return new TaskCompletionSource<T>(TaskCreationOptions.RunContinuationsAsynchronously);
+	}
+}