public async Task <IEnumerable <IEndpointInfo> > GetEndpointInfoAsync(CancellationToken token)
{
var endpointInfoTasks = new List <Task <EndpointInfo> >();
// Run the EndpointInfo creation parallel. The call to FromProcessId sends
// a GetProcessInfo command to the runtime instance to get additional information.
foreach (int pid in DiagnosticsClient.GetPublishedProcesses())
{
endpointInfoTasks.Add(Task.Run(() =>
{
try
{
return(EndpointInfo.FromProcessId(pid));
}
//Catch when the application is running a more privilaged socket than dotnet-monitor. For example, running a web app as administrator
//while running dotnet-monitor without elevation.
catch (UnauthorizedAccessException)
{
return(null);
}
//Most errors from IpcTransport, such as a stale socket.
catch (ServerNotAvailableException)
{
return(null);
}
}, token));
}
await Task.WhenAll(endpointInfoTasks);
return(endpointInfoTasks.Where(t => t.Result != null).Select(t => t.Result));
}
public async Task <IEnumerable <IEndpointInfo> > GetEndpointInfoAsync(CancellationToken token)
{
var endpointInfoTasks = new List <Task <EndpointInfo> >();
// Run the EndpointInfo creation parallel. The call to FromProcessId sends
// a GetProcessInfo command to the runtime instance to get additional information.
foreach (int pid in DiagnosticsClient.GetPublishedProcesses())
{
endpointInfoTasks.Add(Task.Run(() => EndpointInfo.FromProcessId(pid)));
}
await Task.WhenAll(endpointInfoTasks);
return(endpointInfoTasks.Select(t => t.Result));
}
private async Task ResumeAndQueueEndpointInfo(IpcEndpointInfo info, CancellationToken token)
{
try
{
// Send ResumeRuntime message for runtime instances that connect to the server. This will allow
// those instances that are configured to pause on start to resume after the diagnostics
// connection has been made. Instances that are not configured to pause on startup will ignore
// the command and return success.
var client = new DiagnosticsClient(info.Endpoint);
try
{
client.ResumeRuntime();
}
catch (ServerErrorException)
{
// The runtime likely doesn't understand the ResumeRuntime command.
}
EndpointInfo endpointInfo = EndpointInfo.FromIpcEndpointInfo(info);
await _endpointInfosSemaphore.WaitAsync(token).ConfigureAwait(false);
try
{
_endpointInfos.Add(endpointInfo);
OnAddedEndpointInfo(endpointInfo);
}
finally
{
_endpointInfosSemaphore.Release();
}
}
catch (Exception)
{
_server?.RemoveConnection(info.RuntimeInstanceCookie);
throw;
}
}
/// <summary>
/// Returns true if the connection is not longer viable.
/// </summary>
private static async Task <bool> CheckNotViable(EndpointInfo info, CancellationToken token)
{
using var timeoutSource = new CancellationTokenSource();
using var linkedSource = CancellationTokenSource.CreateLinkedTokenSource(token, timeoutSource.Token);
try
{
timeoutSource.CancelAfter(PruneWaitForConnectionTimeout);
await info.Endpoint.WaitForConnectionAsync(linkedSource.Token).ConfigureAwait(false);
}
catch
{
// Only report not viable if check was not cancelled.
if (!token.IsCancellationRequested)
{
return(true);
}
}
return(false);
}
private async Task PruneIfNotViable(EndpointInfo info, CancellationToken token)
{
using var timeoutSource = new CancellationTokenSource();
using var linkedSource = CancellationTokenSource.CreateLinkedTokenSource(token, timeoutSource.Token);
try
{
timeoutSource.CancelAfter(PruneWaitForConnectionTimeout);
await info.Endpoint.WaitForConnectionAsync(linkedSource.Token).ConfigureAwait(false);
}
catch
{
// Only remove the endpoint info if due to some exception
// other than cancelling the pruning operation.
if (!token.IsCancellationRequested)
{
_endpointInfos.Remove(info);
OnRemovedEndpointInfo(info);
_server?.RemoveConnection(info.RuntimeInstanceCookie);
}
}
}
internal virtual void OnRemovedEndpointInfo(EndpointInfo info)
{
}
internal virtual void OnAddedEndpointInfo(EndpointInfo info)
{
}