private static HttpClientCache CreateHttpClientCache(IClientConfig clientConfig)
{
var clients = new HttpClient[clientConfig.HttpClientCacheSize];
for (int i = 0; i < clients.Length; i++)
{
clients[i] = CreateHttpClient(clientConfig);
}
var cache = new HttpClientCache(clients);
return(cache);
}
/// <summary>
/// Creates an HTTP request for the given URI.
/// </summary>
/// <param name="requestUri">The request URI.</param>
/// <returns>An HTTP request.</returns>
public IHttpRequest <HttpContent> CreateHttpRequest(Uri requestUri)
{
HttpClient httpClient = null;
if (ClientConfig.CacheHttpClients(_clientConfig))
{
if (_httpClientCache == null)
{
if (!ClientConfig.UseGlobalHttpClientCache(_clientConfig))
{
_useGlobalHttpClientCache = false;
_httpClientCacheRWLock.EnterWriteLock();
try
{
if (_httpClientCache == null)
{
_httpClientCache = CreateHttpClientCache(_clientConfig);
}
}
finally
{
_httpClientCacheRWLock.ExitWriteLock();
}
}
else
{
_useGlobalHttpClientCache = true;
// Check to see if an HttpClient was created by another service client with the
// same settings on the ClientConfig.
var configUniqueString = ClientConfig.CreateConfigUniqueString(_clientConfig);
_httpClientCacheRWLock.EnterReadLock();
try
{
_httpClientCaches.TryGetValue(configUniqueString, out _httpClientCache);
}
finally
{
_httpClientCacheRWLock.ExitReadLock();
}
// If a HttpClientCache is not found in the global cache then create one
// for this and other service clients to use.
if (_httpClientCache == null)
{
_httpClientCacheRWLock.EnterWriteLock();
try
{
// Check if the HttpClientCache was created by some other thread
// while this thread was waiting for the lock.
if (!_httpClientCaches.TryGetValue(configUniqueString, out _httpClientCache))
{
_httpClientCache = CreateHttpClientCache(_clientConfig);
_httpClientCaches[configUniqueString] = _httpClientCache;
}
}
finally
{
_httpClientCacheRWLock.ExitWriteLock();
}
}
}
}
// Now that we have a HttpClientCache from either the global cache or just created a new HttpClientCache
// get the next HttpClient to be used for making a web request.
httpClient = _httpClientCache.GetNextClient();
}
else
{
httpClient = CreateHttpClient(_clientConfig);
}
return(new HttpWebRequestMessage(httpClient, requestUri, _clientConfig));
}