HttpListenerTimeoutManager.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Net / System / Net / HttpListenerTimeoutManager.cs / 1305376 / HttpListenerTimeoutManager.cs
                        
                        
                            using System; 
using System.Net;
using System.Diagnostics.CodeAnalysis;

namespace System.Net { 

    internal class HttpListenerTimeoutManager 
    { 
        private HttpListener listener;
        private int[] timeouts; 
        private uint minSendRate;

        private const int defaulServerTimeout = 120;
        private const uint defaultMinSendRate = 150; 

        // 
        // Timeouts are configurable only if Http API V2 is being used which is available on Vista+. On XP and 
        // Win2k3, doing a GET on HttpListener for HttpListenerTimeoutManager will throw an exception.
        // 
        internal HttpListenerTimeoutManager(HttpListener context)
        {
            listener = context;
 
            //
            // We have to maintain local state since we allow applications to set individual timeouts. Native Http 
            // API for setting timeouts expects all timeout values in every call so we have remember timeout values 
            // to fill in the blanks. Except MinSendRate, local state for remaining five timeouts is maintained in
            // timeouts array. 
            //
            timeouts = new int[5];
        }
 
        [SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode",
            Justification = "Suppress due to tools issues with unit test infrastructure")] 
        private TimeSpan GetTimeout(UnsafeNclNativeMethods.HttpApi.HTTP_TIMEOUT_TYPE type) 
        {
            // 
            // Since we maintain local state, GET is local.
            //
            return new TimeSpan(0, 0, (int)timeouts[(int)type]);
        } 

 
        [SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", 
            Justification = "Suppress due to tools issues with unit test infrastructure")]
        private void SetTimespanTimeout(UnsafeNclNativeMethods.HttpApi.HTTP_TIMEOUT_TYPE type, TimeSpan value) 
        {
            Int64 timeoutValue;

            // 
            // All timeouts are defined as USHORT in native layer (except MinSendRate, which is ULONG). Make sure that
            // timeout value is within range. 
            // 
            timeoutValue = Convert.ToInt64(value.TotalSeconds);
 
            if (timeoutValue < 0 || timeoutValue > ushort.MaxValue)
            {
                throw new ArgumentOutOfRangeException("value");
            } 

            // 
            // Use local state to get values for other timeouts. Call into the native layer and if that 
            // call succeeds, update local state.
            // 

            int[] currentTimeouts = timeouts;
            currentTimeouts[(int)type] = (int)timeoutValue;
            listener.SetServerTimeout(currentTimeouts, minSendRate); 
            timeouts[(int)type] = (int)timeoutValue;
        } 
 
        [SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode",
            Justification = "Suppress due to tools issues with unit test infrastructure")] 
        public TimeSpan EntityBody
        {
            get
            { 
                return GetTimeout(UnsafeNclNativeMethods.HttpApi.HTTP_TIMEOUT_TYPE.EntityBody);
            } 
            set 
            {
                SetTimespanTimeout(UnsafeNclNativeMethods.HttpApi.HTTP_TIMEOUT_TYPE.EntityBody, value); 
            }
        }

        [SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", 
            Justification = "Suppress due to tools issues with unit test infrastructure")]
        public TimeSpan DrainEntityBody 
        { 
            get
            { 
                return GetTimeout(UnsafeNclNativeMethods.HttpApi.HTTP_TIMEOUT_TYPE.DrainEntityBody);
            }
            set
            { 
                SetTimespanTimeout(UnsafeNclNativeMethods.HttpApi.HTTP_TIMEOUT_TYPE.DrainEntityBody, value);
            } 
        } 

        [SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", 
            Justification = "Suppress due to tools issues with unit test infrastructure")]
        public TimeSpan RequestQueue
        {
            get 
            {
                return GetTimeout(UnsafeNclNativeMethods.HttpApi.HTTP_TIMEOUT_TYPE.RequestQueue); 
            } 
            set
            { 
                SetTimespanTimeout(UnsafeNclNativeMethods.HttpApi.HTTP_TIMEOUT_TYPE.RequestQueue, value);
            }
        }
 
        [SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode",
            Justification = "Suppress due to tools issues with unit test infrastructure")] 
        public TimeSpan IdleConnection 
        {
            get 
            {
                return GetTimeout(UnsafeNclNativeMethods.HttpApi.HTTP_TIMEOUT_TYPE.IdleConnection);
            }
            set 
            {
                SetTimespanTimeout(UnsafeNclNativeMethods.HttpApi.HTTP_TIMEOUT_TYPE.IdleConnection, value); 
            } 
        }
 
        [SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode",
            Justification = "Suppress due to tools issues with unit test infrastructure")]
        public TimeSpan HeaderWait
        { 
            get
            { 
                return GetTimeout(UnsafeNclNativeMethods.HttpApi.HTTP_TIMEOUT_TYPE.HeaderWait); 
            }
            set 
            {
                SetTimespanTimeout(UnsafeNclNativeMethods.HttpApi.HTTP_TIMEOUT_TYPE.HeaderWait, value);
            }
        } 

        [SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", 
            Justification = "Suppress due to tools issues with unit test infrastructure")] 
        public long MinSendRate
        { 
            get
            {
                //
                // Since we maintain local state, GET is local. 
                //
                return minSendRate; 
            } 
            set
            { 
                //
                // MinSendRate value is ULONG in native layer.
                //
                if (value < 0 || value > uint.MaxValue) 
                {
                    throw new ArgumentOutOfRangeException("value"); 
                } 

                listener.SetServerTimeout(timeouts, (uint)value); 
                minSendRate = (uint)value;
            }
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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HttpListenerTimeoutManager.cs source code in C# .NET

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