Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Net / System / Net / HybridWebProxyFinder.cs / 1305376 / HybridWebProxyFinder.cs
using System; using System.Collections.Generic; using System.Diagnostics; namespace System.Net { // This class behaves the same as WinHttpWebProxyFinder. The only difference is that in cases where // the script location has a scheme != HTTP, it falls back to NetWebProxyFinder which supports // also other schemes like FILE and FTP. // The mid-term goal for WinHttp is to support at least FILE scheme since it was already requested // by customers. The long term goal for System.Net is to use WinHttp only and remove this class // as well as NetWebProxyFinder. internal sealed class HybridWebProxyFinder : IWebProxyFinder { private NetWebProxyFinder netFinder; private WinHttpWebProxyFinder winHttpFinder; private BaseWebProxyFinder currentFinder; private AutoWebProxyScriptEngine engine; public HybridWebProxyFinder(AutoWebProxyScriptEngine engine) { this.engine = engine; this.winHttpFinder = new WinHttpWebProxyFinder(engine); this.currentFinder = winHttpFinder; } public bool IsValid { get { return currentFinder.IsValid; } } public bool GetProxies(Uri destination, out IListproxyList) { if (currentFinder.GetProxies(destination, out proxyList)) { return true; } if (currentFinder.IsUnrecognizedScheme && (currentFinder == winHttpFinder)) { // If WinHttpWebProxyFinder failed because the script location has a != HTTP scheme, // fall back to NetWebProxyFinder which supports also other schemes. if (netFinder == null) { netFinder = new NetWebProxyFinder(engine); } currentFinder = netFinder; return currentFinder.GetProxies(destination, out proxyList); } // Something else went wrong. Falling back to NetWebProxyFinder wouldn't help. return false; } public void Abort() { // Abort only the current finder. There is no need to abort the other one (which is either // uninitialized, i.e. not used yet, or we have an unrecognized-scheme state, which should // not be changed). currentFinder.Abort(); } public void Reset() { winHttpFinder.Reset(); if (netFinder != null) { netFinder.Reset(); } // Some settings changed, so let's reset the current finder to WinHttpWebProxyFinder, since // now it may work (if it didn't already before). currentFinder = winHttpFinder; } public void Dispose() { Dispose(true); } private void Dispose(bool disposing) { if (disposing) { winHttpFinder.Dispose(); if (netFinder != null) { netFinder.Dispose(); } } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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