/// <summary>
/// Starts the dotnet process.
/// </summary>
public async Task StartAsync(CancellationToken token)
{
string frameworkVersion = null;
switch (FrameworkReference)
{
case DotNetFrameworkReference.Microsoft_AspNetCore_App:
// Starting in .NET 6, the .NET SDK is emitting two framework references
// into the .runtimeconfig.json file. This is preventing the --fx-version
// parameter from having the correct effect of using the exact framework version
// that we want. Disabling this forced version usage for ASP.NET 6+ applications
// until it can be resolved.
if (!TargetFramework.IsEffectively(TargetFrameworkMoniker.Net60))
{
frameworkVersion = TargetFramework.GetAspNetCoreFrameworkVersionString();
}
break;
case DotNetFrameworkReference.Microsoft_NetCore_App:
frameworkVersion = TargetFramework.GetNetCoreAppFrameworkVersionString();
break;
default:
throw new InvalidOperationException($"Unsupported framework reference: {FrameworkReference}");
}
StringBuilder argsBuilder = new();
if (!string.IsNullOrEmpty(frameworkVersion))
{
argsBuilder.Append("--fx-version ");
argsBuilder.Append(frameworkVersion);
argsBuilder.Append(" ");
}
argsBuilder.Append("\"");
argsBuilder.Append(EntrypointAssemblyPath);
argsBuilder.Append("\" ");
argsBuilder.Append(Arguments);
_process.StartInfo.Arguments = argsBuilder.ToString();
if (!_process.Start())
{
throw new InvalidOperationException($"Unable to start: {_process.StartInfo.FileName} {_process.StartInfo.Arguments}");
}
HasStarted = true;
if (WaitForDiagnosticPipe)
{
// On Windows, named pipe connection will block until the named pipe is ready to connect so no need to block here
if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
// On Unix, we wait until the socket is created.
while (true)
{
token.ThrowIfCancellationRequested();
var matchingFiles = Directory.GetFiles(Path.GetTempPath(), $"dotnet-diagnostic-{_process.Id}-*-socket");
if (matchingFiles.Length > 0)
{
break;
}
await Task.Delay(TimeSpan.FromMilliseconds(100));
}
}
}
}
