/**
* With `EnableTcpStats` set, the states of active TCP connections will now be included
* on the response and in the debug information.
*
* The client includes a `TcpStats`
* class to help with retrieving more detail about active TCP connections should it be
* required
*/
[I] public void TcpStatistics()
{
// hide
var client = this.Client;
var tcpStatistics = TcpStats.GetActiveTcpConnections(); // <1> Retrieve details about active TCP connections, including local and remote addresses and ports
var ipv4Stats = TcpStats.GetTcpStatistics(NetworkInterfaceComponent.IPv4); // <2> Retrieve statistics about IPv4
var ipv6Stats = TcpStats.GetTcpStatistics(NetworkInterfaceComponent.IPv6); // <3> Retrieve statistics about IPv6
var response = client.Search <Project>(s => s
.Query(q => q
.MatchAll()
)
);
}
/// <inheritdoc cref="IConnection.Request{TResponse}"/>>
public virtual TResponse Request <TResponse>(RequestData requestData)
where TResponse : class, ITransportResponse, new()
{
int?statusCode = null;
IEnumerable <string> warnings = null;
Stream responseStream = null;
Exception ex = null;
string mimeType = null;
ReadOnlyDictionary <TcpState, int> tcpStats = null;
ReadOnlyDictionary <string, ThreadPoolStatistics> threadPoolStats = null;
try
{
var request = CreateHttpWebRequest(requestData);
var data = requestData.PostData;
if (data != null)
{
using (var stream = request.GetRequestStream())
{
if (requestData.HttpCompression)
{
using var zipStream = new GZipStream(stream, CompressionMode.Compress);
data.Write(zipStream, requestData.ConnectionSettings);
}
else
{
data.Write(stream, requestData.ConnectionSettings);
}
}
}
requestData.MadeItToResponse = true;
if (requestData.TcpStats)
{
tcpStats = TcpStats.GetStates();
}
if (requestData.ThreadPoolStats)
{
threadPoolStats = ThreadPoolStats.GetStats();
}
//http://msdn.microsoft.com/en-us/library/system.net.httpwebresponse.getresponsestream.aspx
//Either the stream or the response object needs to be closed but not both although it won't
//throw any errors if both are closed atleast one of them has to be Closed.
//Since we expose the stream we let closing the stream determining when to close the connection
var httpWebResponse = (HttpWebResponse)request.GetResponse();
HandleResponse(httpWebResponse, out statusCode, out responseStream, out mimeType);
//response.Headers.HasKeys() can return false even if response.Headers.AllKeys has values.
if (httpWebResponse.SupportsHeaders && httpWebResponse.Headers.Count > 0 && httpWebResponse.Headers.AllKeys.Contains("Warning"))
{
warnings = httpWebResponse.Headers.GetValues("Warning");
}
}
catch (WebException e)
{
ex = e;
if (e.Response is HttpWebResponse httpWebResponse)
{
HandleResponse(httpWebResponse, out statusCode, out responseStream, out mimeType);
}
}
responseStream ??= Stream.Null;
var response = ResponseBuilder.ToResponse <TResponse>(requestData, ex, statusCode, warnings, responseStream, mimeType);
// set TCP and threadpool stats on the response here so that in the event the request fails after the point of
// gathering stats, they are still exposed on the call details. Ideally these would be set inside ResponseBuilder.ToResponse,
// but doing so would be a breaking change in 7.x
response.ApiCall.TcpStats = tcpStats;
response.ApiCall.ThreadPoolStats = threadPoolStats;
return(response);
}
/// <inheritdoc cref="IConnection.RequestAsync{TResponse}"/>>
public virtual async Task <TResponse> RequestAsync <TResponse>(RequestData requestData,
CancellationToken cancellationToken
)
where TResponse : class, ITransportResponse, new()
{
Action unregisterWaitHandle = null;
int? statusCode = null;
IEnumerable <string> warnings = null;
Stream responseStream = null;
Exception ex = null;
string mimeType = null;
ReadOnlyDictionary <TcpState, int> tcpStats = null;
ReadOnlyDictionary <string, ThreadPoolStatistics> threadPoolStats = null;
try
{
var data = requestData.PostData;
var request = CreateHttpWebRequest(requestData);
using (cancellationToken.Register(() => request.Abort()))
{
if (data != null)
{
var apmGetRequestStreamTask =
Task.Factory.FromAsync(request.BeginGetRequestStream, r => request.EndGetRequestStream(r), null);
unregisterWaitHandle = RegisterApmTaskTimeout(apmGetRequestStreamTask, request, requestData);
using (var stream = await apmGetRequestStreamTask.ConfigureAwait(false))
{
if (requestData.HttpCompression)
{
using var zipStream = new GZipStream(stream, CompressionMode.Compress);
await data.WriteAsync(zipStream, requestData.ConnectionSettings, cancellationToken).ConfigureAwait(false);
}
else
{
await data.WriteAsync(stream, requestData.ConnectionSettings, cancellationToken).ConfigureAwait(false);
}
}
unregisterWaitHandle?.Invoke();
}
requestData.MadeItToResponse = true;
//http://msdn.microsoft.com/en-us/library/system.net.httpwebresponse.getresponsestream.aspx
//Either the stream or the response object needs to be closed but not both although it won't
//throw any errors if both are closed atleast one of them has to be Closed.
//Since we expose the stream we let closing the stream determining when to close the connection
var apmGetResponseTask = Task.Factory.FromAsync(request.BeginGetResponse, r => request.EndGetResponse(r), null);
unregisterWaitHandle = RegisterApmTaskTimeout(apmGetResponseTask, request, requestData);
if (requestData.TcpStats)
{
tcpStats = TcpStats.GetStates();
}
if (requestData.ThreadPoolStats)
{
threadPoolStats = ThreadPoolStats.GetStats();
}
var httpWebResponse = (HttpWebResponse)await apmGetResponseTask.ConfigureAwait(false);
HandleResponse(httpWebResponse, out statusCode, out responseStream, out mimeType);
if (httpWebResponse.SupportsHeaders && httpWebResponse.Headers.HasKeys() && httpWebResponse.Headers.AllKeys.Contains("Warning"))
{
warnings = httpWebResponse.Headers.GetValues("Warning");
}
}
}
catch (WebException e)
{
ex = e;
if (e.Response is HttpWebResponse httpWebResponse)
{
HandleResponse(httpWebResponse, out statusCode, out responseStream, out mimeType);
}
}
finally
{
unregisterWaitHandle?.Invoke();
}
responseStream ??= Stream.Null;
var response = await ResponseBuilder.ToResponseAsync <TResponse>
(requestData, ex, statusCode, warnings, responseStream, mimeType, cancellationToken)
.ConfigureAwait(false);
// set TCP and threadpool stats on the response here so that in the event the request fails after the point of
// gathering stats, they are still exposed on the call details. Ideally these would be set inside ResponseBuilder.ToResponse,
// but doing so would be a breaking change in 7.x
response.ApiCall.TcpStats = tcpStats;
response.ApiCall.ThreadPoolStats = threadPoolStats;
return(response);
}
private TcpStats AnalyzeConnections(ConnectionData[] connections, TimeSpan measurePeriod)
{
_receivedSinceLastRun = 0;
_sentSinceLastRun = 0;
_pendingSendOnLastRun = 0;
_inSendOnLastRun = 0;
_pendingReceivedOnLastRun = 0;
_anySendBlockedOnLastRun = false;
foreach (var connection in connections)
{
AnalyzeConnection(connection);
}
var stats = new TcpStats(connections.Length,
_sentTotal,
_receivedTotal,
_sentSinceLastRun,
_receivedSinceLastRun,
_pendingSendOnLastRun,
_inSendOnLastRun,
_pendingReceivedOnLastRun,
measurePeriod);
Log.Debug("# Total connections: {0,3}. Out: {1:8} In: {2:8} Pending Send: {3} " +
"In Send: {4} Pending Received: {5} Measure Time: {6}",
stats.Connections,
stats.SendingSpeed,
stats.ReceivingSpeed,
stats.PendingSend,
stats.InSend,
stats.PendingSend,
stats.MeasureTimeFriendly);
return stats;
}
