System.Net.ServicePoint.SetTcpKeepAlive C# (CSharp) Method

        public void SetTcpKeepAlive(bool enabled, int keepAliveTime, int keepAliveInterval) { throw null; }
    }

        public static ServicePoint FindServicePoint(Uri address, IWebProxy proxy)
        {
            if (address == null)
            {
                throw new ArgumentNullException("address");
            }

            var origAddress = new Uri(address.Scheme + "://" + address.Authority);

            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")
                {
                    throw new NotSupportedException("Proxy scheme not supported.");
                }

                if (isSecure && address.Scheme == "http")
                {
                    useConnect = true;
                }
            }

            address = new Uri(address.Scheme + "://" + address.Authority);

            var key = new SPKey(origAddress, usesProxy ? address : null, useConnect);

            lock (servicePoints) {
                if (servicePoints.TryGetValue(key, out var sp))
                {
                    return(sp);
                }

                if (maxServicePoints > 0 && servicePoints.Count >= maxServicePoints)
                {
                    throw new InvalidOperationException("maximum number of service points reached");
                }

                int limit;
#if MOBILE
                limit = defaultConnectionLimit;
#else
                string addr = address.ToString();
                limit = (int)manager.GetMaxConnections(addr);
#endif
                sp = new ServicePoint(key, 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);

                return(servicePoints.GetOrAdd(key, sp));
            }
        }