internal static ServicePoint FindServicePoint(Uri address, IWebProxy proxy, out ProxyChain chain, ref HttpAbortDelegate abortDelegate, ref int abortState)
{
if (address == null)
{
throw new ArgumentNullException("address");
}
bool isProxyServicePoint = false;
chain = null;
Uri current = null;
if ((proxy != null) && !address.IsLoopback)
{
IAutoWebProxy proxy2 = proxy as IAutoWebProxy;
if (proxy2 != null)
{
chain = proxy2.GetProxies(address);
abortDelegate = chain.HttpAbortDelegate;
try
{
Thread.MemoryBarrier();
if (abortState != 0)
{
Exception exception = new WebException(NetRes.GetWebStatusString(WebExceptionStatus.RequestCanceled), WebExceptionStatus.RequestCanceled);
throw exception;
}
chain.Enumerator.MoveNext();
current = chain.Enumerator.Current;
}
finally
{
abortDelegate = null;
}
}
else if (!proxy.IsBypassed(address))
{
current = proxy.GetProxy(address);
}
if (current != null)
{
address = current;
isProxyServicePoint = true;
}
}
return(FindServicePointHelper(address, isProxyServicePoint));
}
// If abortState becomes non-zero, the attempt to find a service point has been aborted.
internal static ServicePoint FindServicePoint(Uri address, IWebProxy proxy, out ProxyChain chain, ref HttpAbortDelegate abortDelegate, ref int abortState)
{
if (address == null)
{
throw new ArgumentNullException("address");
}
GlobalLog.Enter("ServicePointManager::FindServicePoint() address:" + address.ToString());
bool isProxyServicePoint = false;
chain = null;
//
// find proxy info, and then switch on proxy
//
Uri proxyAddress = null;
if (proxy != null && !address.IsLoopback)
{
IAutoWebProxy autoProxy = proxy as IAutoWebProxy;
if (autoProxy != null)
{
chain = autoProxy.GetProxies(address);
// Set up our ability to abort this MoveNext call. Note that the current implementations of ProxyChain will only
// take time on the first call, so this is the only place we do this. If a new ProxyChain takes time in later
// calls, this logic should be copied to other places MoveNext is called.
GlobalLog.Assert(abortDelegate == null, "ServicePointManager::FindServicePoint()|AbortDelegate already set.");
abortDelegate = chain.HttpAbortDelegate;
try
{
Thread.MemoryBarrier();
if (abortState != 0)
{
Exception exception = new WebException(NetRes.GetWebStatusString(WebExceptionStatus.RequestCanceled), WebExceptionStatus.RequestCanceled);
GlobalLog.LeaveException("ServicePointManager::FindServicePoint() Request aborted before proxy lookup.", exception);
throw exception;
}
if (!chain.Enumerator.MoveNext())
{
GlobalLog.Assert("ServicePointManager::FindServicePoint()|GetProxies() returned zero proxies.");
/*
* Exception exception = new WebException(NetRes.GetWebStatusString(WebExceptionStatus.RequestProhibitedByProxy), WebExceptionStatus.RequestProhibitedByProxy);
* GlobalLog.LeaveException("ServicePointManager::FindServicePoint() Proxy prevented request.", exception);
* throw exception;
*/
}
proxyAddress = chain.Enumerator.Current;
}
finally
{
abortDelegate = null;
}
}
else if (!proxy.IsBypassed(address))
{
// use proxy support
// rework address
proxyAddress = proxy.GetProxy(address);
}
// null means DIRECT
if (proxyAddress != null)
{
address = proxyAddress;
isProxyServicePoint = true;
}
}
ServicePoint servicePoint = FindServicePointHelper(address, isProxyServicePoint);
GlobalLog.Leave("ServicePointManager::FindServicePoint() servicePoint#" + ValidationHelper.HashString(servicePoint));
return(servicePoint);
}
