ServicePointManagerExtensions

Sample code

Here's how the code can be used in a Windows Azure project; reporting high connection counts to a 3rd party service.

// Get config values using CloudConfigurationManager, so the settings can be changed in the Azure portal    
var loggingInterval = CloudConfigurationManager.GetSetting("ServicePointMonitor.Interval");
var loggingTreshold = CloudConfigurationManager.GetSetting("ServicePointMonitor.Treshold");

int treshold;
if (!int.TryParse(loggingTreshold, out treshold))
    treshold = 0;

// Only start when the config option is set
if (!string.IsNullOrEmpty(loggingInterval))
{
    ServicePointMonitor.Start(TimeSpan.Parse(loggingInterval),
                              status =>
                              {
                                  if (status.TotalConnectionsOverall > treshold)
                                  {
                                      // log to 3rd party logging tool
                                      ExceptionlessClient.Default
                                                         .CreateLog("ServicePointMonitor", $"ServicePoint count: {status.ServicePointCount}, " +
                                                                                           $"TotalConnections: {status.TotalConnectionsOverall} " +
                                                                                           $"DefaultConnectionLimit: {status.DefaultConnectionLimit}")
                                                         .AddObject(status)
                                                         .Submit();
                                  }
                              });
}

References

ServicePointMonitor was based on the blog post by Freek Paans about starving outgoing connections in Windows Azure Web Sites.