ConnectionPoolManager.cs source code in C# .NET

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                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Net / System / Net / ConnectionPoolManager.cs / 1305376 / ConnectionPoolManager.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Net 
{ 
    using System;
    using System.Collections; 
    using System.Diagnostics;
    using System.Security;
    using System.Security.Permissions;
    using System.Threading; 
    using System.Globalization;
 
    internal class ConnectionPoolManager { 
        private static Hashtable m_ConnectionPools = new Hashtable();   // Hashtable used for connection pools
        private static object s_InternalSyncObject; 

        private ConnectionPoolManager() {
        }
 
        private static object InternalSyncObject {
            get { 
                if (s_InternalSyncObject == null) { 
                    object o = new Object();
                    Interlocked.CompareExchange(ref s_InternalSyncObject, o, null); 
                }
                return s_InternalSyncObject;
            }
        } 

        /*internal static ConnectionPool[] ConnectionPools { 
            get { 
                lock(InternalSyncObject) {
                    ConnectionPool [] connectionPools = new ConnectionPool[m_ConnectionPools.Count]; 
                    m_ConnectionPools.CopyTo(connectionPools, 0);
                    return connectionPools;
                }
            } 
        }
        */ 
        private static string GenerateKey(string hostName, int port, string groupName) { 
            return hostName+"\r"+port.ToString(NumberFormatInfo.InvariantInfo)+"\r"+groupName;
        } 

        internal static ConnectionPool GetConnectionPool(ServicePoint servicePoint, string groupName, CreateConnectionDelegate createConnectionCallback) {
            string key = GenerateKey(servicePoint.Host, servicePoint.Port, groupName);
            lock(InternalSyncObject) { 
                ConnectionPool connectionPool = (ConnectionPool) m_ConnectionPools[key];
                if (connectionPool == null) { 
                    connectionPool = new ConnectionPool(servicePoint, servicePoint.ConnectionLimit, 0, servicePoint.MaxIdleTime, createConnectionCallback); 
                    m_ConnectionPools[key] = connectionPool;
                } 
                return connectionPool;
            }
        }
 
        /*
        internal static ConnectionPool GetConnectionPool(string hostName, int port, string groupName, CreateConnectionDelegate createConnectionCallback) { 
            string key = hostName + "\r" + port.ToString(NumberFormatInfo.InvariantInfo) + "\r" + groupName; 
            lock(InternalSyncObject) {
                ConnectionPool connectionPool = (ConnectionPool) m_ConnectionPools[key]; 
                if (connectionPool == null) {
                    ServicePoint servicePoint = ServicePointManager.FindServicePoint(new Uri("sockets://" + hostName + ":" + port.ToString(NumberFormatInfo.InvariantInfo)), null);
                    connectionPool = new ConnectionPool(servicePoint, m_DefaultMaxPool, 0,  servicePoint.MaxIdleTime, createConnectionCallback);
                    m_ConnectionPools[key] = connectionPool; 
                }
                return connectionPool; 
            } 
        }
        */ 

        internal static bool RemoveConnectionPool(ServicePoint servicePoint, string groupName) {
            string key = GenerateKey(servicePoint.Host, servicePoint.Port, groupName);
            lock(InternalSyncObject) { 
                ConnectionPool connectionPool = (ConnectionPool)(m_ConnectionPools[key]);
                if(connectionPool != null) 
                { 
                    m_ConnectionPools[key] = null;
                    m_ConnectionPools.Remove(key); 
                    return true;
                }
            }
            return false; 
        }
 
        // Gets the connection pool for the specified service point (if it exists) and 
        // invokes ForceCleanup to gracefully clean up any connections in the pool.
        // 
        // preconditions: none
        //
        // postconditions: if a connection pool for the specified servicepoint and group name
        // exists, any open connections that are not in use will be gracefully cleaned up. 
        //
        // Note: this will not destroy the connection pool itself so any future objects that 
        // need that connection pool will still be able to access it to create new connections 
        // and any objects using connections in the pool will still be able to return them
        internal static void CleanupConnectionPool(ServicePoint servicePoint, string groupName) { 
            string key = GenerateKey(servicePoint.Host, servicePoint.Port, groupName);
            lock (InternalSyncObject) {
                ConnectionPool connectionPool = (ConnectionPool)(m_ConnectionPools[key]);
                if (connectionPool != null) { 
                    connectionPool.ForceCleanup();
                } 
            } 
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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ConnectionPoolManager.cs source code in C# .NET

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