public static ServicePoint FindServicePoint (Uri address, IWebProxy proxy)
{
if (address == null)
throw new ArgumentNullException ("address");
RecycleServicePoints ();
bool usesProxy = false;
bool useConnect = false;
if (proxy != null && !proxy.IsBypassed(address)) {
usesProxy = true;
bool isSecure = address.Scheme == "https";
address = proxy.GetProxy (address);
if (address.Scheme != "http" && !isSecure)
throw new NotSupportedException ("Proxy scheme not supported.");
if (isSecure && address.Scheme == "http")
useConnect = true;
}
address = new Uri (address.Scheme + "://" + address.Authority);
ServicePoint sp = null;
lock (servicePoints) {
SPKey key = new SPKey (address, useConnect);
sp = servicePoints [key] as ServicePoint;
if (sp != null)
return sp;
if (maxServicePoints > 0 && servicePoints.Count >= maxServicePoints)
throw new InvalidOperationException ("maximum number of service points reached");
string addr = address.ToString ();
#if NET_2_1
int limit = defaultConnectionLimit;
#else
int limit = (int) manager.GetMaxConnections (addr);
#endif
sp = new ServicePoint (address, limit, maxServicePointIdleTime);
sp.Expect100Continue = expectContinue;
sp.UseNagleAlgorithm = useNagle;
sp.UsesProxy = usesProxy;
sp.UseConnect = useConnect;
sp.SetTcpKeepAlive (tcp_keepalive, tcp_keepalive_time, tcp_keepalive_interval);
servicePoints.Add (key, sp);
}
return sp;
}