public HttpClient CreateHttpClient(HttpClientOptions options)
{
HttpMessageHandler handler = new HttpClientHandler {AllowAutoRedirect = options.AllowAutoRedirect};
if (((HttpClientHandler) handler).SupportsAutomaticDecompression)
((HttpClientHandler) handler).AutomaticDecompression = DecompressionMethods.Deflate | DecompressionMethods.GZip;
if (options.AddTokenToRequests)
handler = new AccessTokenAuthenticator(options.TokenRetriever, handler);
TimeSpanSemaphore readTimeSpanSemaphore = null;
TimeSpanSemaphore writeTimeSpanSemaphore = null;
if (options.ReadRequestsPerSecond.HasValue)
{
double delay = (1/options.ReadRequestsPerSecond.Value);
readTimeSpanSemaphore = (_readTimeSpanSemaphore ?? (_readTimeSpanSemaphore = new TimeSpanSemaphore(1, TimeSpan.FromSeconds(delay))));
}
if (options.WriteRequestsPerSecond.HasValue)
{
double delay = (1/options.WriteRequestsPerSecond.Value);
writeTimeSpanSemaphore = (_writeTimeSpanSemaphore ?? (_writeTimeSpanSemaphore = new TimeSpanSemaphore(1, TimeSpan.FromSeconds(delay))));
}
if (readTimeSpanSemaphore != null || writeTimeSpanSemaphore != null)
{
handler = new ThrottlingMessageHandler(readTimeSpanSemaphore, writeTimeSpanSemaphore, handler);
}
return new HttpClient(handler);
}
public HttpClient CreateHttpClient(HttpClientOptions options)
{
HttpMessageHandler httpMessageHandler = new HttpClientHandler
{
AllowAutoRedirect = options.AllowAutoRedirect
};
if (((HttpClientHandler)httpMessageHandler).SupportsAutomaticDecompression)
((HttpClientHandler)httpMessageHandler).AutomaticDecompression = DecompressionMethods.Deflate | DecompressionMethods.GZip;
if (options.AddTokenToRequests)
httpMessageHandler = new AccessTokenAuthenticator(options.TokenRetriever, httpMessageHandler);
TimeSpanSemaphore readTimeSpanSemaphore = null;
TimeSpanSemaphore writeTimeSpanSemaphore = null;
if (options.ReadRequestsPerSecond.HasValue)
readTimeSpanSemaphore = new TimeSpanSemaphore(1, TimeSpan.FromSeconds(1.0 / options.ReadRequestsPerSecond.Value));
if (options.WriteRequestsPerSecond.HasValue)
writeTimeSpanSemaphore = new TimeSpanSemaphore(1, TimeSpan.FromSeconds(1.0 / options.WriteRequestsPerSecond.Value));
if (readTimeSpanSemaphore != null || writeTimeSpanSemaphore != null)
httpMessageHandler = new ThrottlingMessageHandler(readTimeSpanSemaphore, writeTimeSpanSemaphore, httpMessageHandler);
httpMessageHandler = new RemoveEtagDelegatingHandler(httpMessageHandler);
return new HttpClient(httpMessageHandler);
}
public PreventTooManyRequestsDelegatingHandler(int requestsPerSecond, HttpMessageHandler next)
:base(next)
{
_semaphoreSlim = new TimeSpanSemaphore(
requestsPerSecond,
TimeSpan.FromSeconds(1));
}
public void TimeSpanSemaphoreTest()
{
using (var throttle = new TimeSpanSemaphore(5, TimeSpan.FromSeconds(1)))
{
for (int i = 1; i <= 6; i++)
{
Thread t = new Thread(new ParameterizedThreadStart((taskId) =>
{
throttle.Run(
() => DoWork((int)taskId),
CancellationToken.None);
}));
t.Start(i);
}
Thread.Sleep(2000); // give all the threads a chance to finish
// NOTE: view the console output in Test Explorer
}
}
public HttpClient CreateHttpClient(HttpClientOptions options)
{
HttpMessageHandler handler = new HttpClientHandler {
AllowAutoRedirect = options.AllowAutoRedirect
};
if (((HttpClientHandler)handler).SupportsAutomaticDecompression)
{
((HttpClientHandler)handler).AutomaticDecompression = DecompressionMethods.Deflate | DecompressionMethods.GZip;
}
if (options.AddTokenToRequests)
{
handler = new AccessTokenAuthenticator(options.TokenRetriever, handler);
}
TimeSpanSemaphore readTimeSpanSemaphore = null;
TimeSpanSemaphore writeTimeSpanSemaphore = null;
if (options.ReadRequestsPerSecond.HasValue)
{
double delay = (1 / options.ReadRequestsPerSecond.Value);
readTimeSpanSemaphore = new TimeSpanSemaphore(1, TimeSpan.FromSeconds(delay));
}
if (options.WriteRequestsPerSecond.HasValue)
{
double delay = (1 / options.WriteRequestsPerSecond.Value);
writeTimeSpanSemaphore = new TimeSpanSemaphore(1, TimeSpan.FromSeconds(delay));
}
if (readTimeSpanSemaphore != null || writeTimeSpanSemaphore != null)
{
handler = new ThrottlingMessageHandler(readTimeSpanSemaphore, writeTimeSpanSemaphore, handler);
}
return(new HttpClient(handler));
}
public ThrottlingMessageHandler(TimeSpanSemaphore readTimeSpanSemaphore, TimeSpanSemaphore writeTimeSpanSemaphore, HttpMessageHandler innerHandler)
: base(innerHandler)
{
_readTimeSpanSemaphore = readTimeSpanSemaphore;
_writeTimeSpanSemaphore = writeTimeSpanSemaphore;
}
public ThrottlingMessageHandler(TimeSpanSemaphore readTimeSpanSemaphore, TimeSpanSemaphore writeTimeSpanSemaphore)
: this(readTimeSpanSemaphore, writeTimeSpanSemaphore, null)
{
}
public ThrottlingMessageHandler(TimeSpanSemaphore readTimeSpanSemaphore, TimeSpanSemaphore writeTimeSpanSemaphore, HttpMessageHandler innerHandler = null)
: base(innerHandler)
{
_readTimeSpanSemaphore = readTimeSpanSemaphore;
_writeTimeSpanSemaphore = writeTimeSpanSemaphore;
}
public ThrottlingMessageHandler(TimeSpanSemaphore readTimeSpanSemaphore, TimeSpanSemaphore writeTimeSpanSemaphore)
: this(readTimeSpanSemaphore, writeTimeSpanSemaphore, null)
{
}
public ThrottlingMessageHandler(TimeSpanSemaphore timeSpanSemaphore)
: base(new HttpClientHandler())
{
_timeSpanSemaphore = timeSpanSemaphore;
}