Added request.Proxy=null everywhere, as discussed in http://stackoverflow.com/questions/2519655/httpwebrequest-is-extremely-slow.

Thanks R.Gunther (rigun@rigutech.nl) https://lists.berlios.de/pipermail/opensim-users/2012-September/010986.html

OpenSim/ConsoleClient/Requester.cs

@@ -46,8 +46,8 @@ namespace OpenSim.ConsoleClient
             WebRequest request = WebRequest.Create(requestUrl);
             WebResponse response = null;
 
+            request.Proxy = null;
             request.Method = "POST";
-
             request.ContentType = "application/x-www-form-urlencoded";
 
             byte[] buffer = Encoding.ASCII.GetBytes(data);

OpenSim/Framework/Communications/RestClient.cs

@@ -306,6 +306,7 @@ namespace OpenSim.Framework.Communications
                 _request.ContentType = "application/xml";
                 _request.Timeout = 200000;
                 _request.Method = RequestMethod;
+                _request.Proxy = null;
                 _asyncException = null;
 
 //                IAsyncResult responseAsyncResult = _request.BeginGetResponse(new AsyncCallback(ResponseIsReadyDelegate), _request);
@@ -365,6 +366,7 @@ namespace OpenSim.Framework.Communications
             _request.ContentType = "application/xml";
             _request.Timeout = 900000;
             _request.Method = RequestMethod;
+            _request.Proxy = null;
             _asyncException = null;
             _request.ContentLength = src.Length;
 

OpenSim/Framework/Configuration/HTTP/HTTPConfiguration.cs

@@ -65,6 +65,7 @@ namespace OpenSim.Framework.Configuration.HTTP
                 byte[] buf = new byte[8192];
                 HttpWebRequest request =
                     (HttpWebRequest) WebRequest.Create(remoteConfigSettings.baseConfigURL + configFileName);
+                request.Proxy = null;
                 HttpWebResponse response = (HttpWebResponse) request.GetResponse();
 
                 Stream resStream = response.GetResponseStream();

OpenSim/Framework/RegionLoader/Web/RegionLoaderWebServer.cs

@@ -70,6 +70,7 @@ namespace OpenSim.Framework.RegionLoader.Web
                     int regionCount = 0;
                     HttpWebRequest webRequest = (HttpWebRequest) WebRequest.Create(url);
                     webRequest.Timeout = 30000; //30 Second Timeout
+                    webRequest.Proxy = null;
                     m_log.DebugFormat("[WEBLOADER]: Sending download request to {0}", url);
 
                     try

OpenSim/Framework/Servers/HttpServer/RestObjectPoster.cs

@@ -50,6 +50,7 @@ namespace OpenSim.Framework.Servers.HttpServer
 
             WebRequest request = WebRequest.Create(requestUrl);
             request.Method = verb;
+            request.Proxy = null;
             request.ContentType = "text/xml";
 
             MemoryStream buffer = new MemoryStream();

OpenSim/Framework/Servers/HttpServer/RestObjectPosterResponse.cs

@@ -57,6 +57,7 @@ namespace OpenSim.Framework.Servers.HttpServer
 
             WebRequest request = WebRequest.Create(requestUrl);
             request.Method = verb;
+            request.Proxy = null;
             request.ContentType = "text/xml";
             request.Timeout = 10000;
 

OpenSim/Framework/Servers/HttpServer/RestSessionService.cs

@@ -74,6 +74,7 @@ namespace OpenSim.Framework.Servers.HttpServer
 
             WebRequest request = WebRequest.Create(requestUrl);
             request.Method = verb;
+            request.Proxy = null;
             request.ContentType = "text/xml";
             request.Timeout = 20000;
 
@@ -139,6 +140,7 @@ namespace OpenSim.Framework.Servers.HttpServer
 
             WebRequest request = WebRequest.Create(requestUrl);
             request.Method = verb;
+            request.Proxy = null;
             request.ContentType = "text/xml";
             request.Timeout = 10000;
 

OpenSim/Framework/UntrustedWebRequest.cs

@@ -88,6 +88,7 @@ namespace OpenSim.Framework
             httpWebRequest.ReadWriteTimeout = readWriteTimeoutMS;
             httpWebRequest.Timeout = timeoutMS;
             httpWebRequest.KeepAlive = false;
+            httpWebRequest.Proxy = null;
 
             return httpWebRequest;
         }

OpenSim/Framework/WebUtil.cs

@@ -171,6 +171,7 @@ namespace OpenSim.Framework
                 request.Method = method;
                 request.Timeout = timeout;
                 request.KeepAlive = false;
+                request.Proxy = null;
                 request.MaximumAutomaticRedirections = 10;
                 request.ReadWriteTimeout = timeout / 4;
                 request.Headers[OSHeaderRequestID] = reqnum.ToString();
@@ -350,6 +351,7 @@ namespace OpenSim.Framework
                 request.Method = "POST";
                 request.Timeout = timeout;
                 request.KeepAlive = false;
+                request.Proxy = null;
                 request.MaximumAutomaticRedirections = 10;
                 request.ReadWriteTimeout = timeout / 4;
                 request.Headers[OSHeaderRequestID] = reqnum.ToString();
@@ -730,6 +732,7 @@ namespace OpenSim.Framework
             Type type = typeof(TRequest);
 
             WebRequest request = WebRequest.Create(requestUrl);
+            request.Proxy = null;
             WebResponse response = null;
             TResponse deserial = default(TResponse);
             XmlSerializer deserializer = new XmlSerializer(typeof(TResponse));
@@ -924,6 +927,7 @@ namespace OpenSim.Framework
 
             WebRequest request = WebRequest.Create(requestUrl);
             request.Method = verb;
+            request.Proxy = null;
             string respstring = String.Empty;
 
             using (MemoryStream buffer = new MemoryStream())
@@ -1051,6 +1055,7 @@ namespace OpenSim.Framework
 
             WebRequest request = WebRequest.Create(requestUrl);
             request.Method = verb;
+            request.Proxy = null;
             MemoryStream buffer = null;
 
             if ((verb == "POST") || (verb == "PUT"))

OpenSim/Region/CoreModules/Scripting/HttpRequest/ScriptsHttpRequests.cs

@@ -384,6 +384,7 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
                 Request = (HttpWebRequest) WebRequest.Create(Url);
                 Request.Method = HttpMethod;
                 Request.ContentType = HttpMIMEType;
+                Request.Proxy = null;
 
                 if(!HttpVerifyCert)
                 {

OpenSim/Region/CoreModules/Scripting/LoadImageURL/LoadImageURLModule.cs

@@ -148,19 +148,21 @@ namespace OpenSim.Region.CoreModules.Scripting.LoadImageURL
         private void MakeHttpRequest(string url, UUID requestID)
         {
             WebRequest request = HttpWebRequest.Create(url);
-            
+
-            if (m_proxyurl != null && m_proxyurl.Length > 0) 
+            if (m_proxyurl != null && m_proxyurl.Length > 0)
             {
-                if (m_proxyexcepts != null && m_proxyexcepts.Length > 0) 
+                if (m_proxyexcepts != null && m_proxyexcepts.Length > 0)
                 {
                     string[] elist = m_proxyexcepts.Split(';');
                     request.Proxy = new WebProxy(m_proxyurl, true, elist);
-                } 
+                }
-                else 
+                else
                 {
                     request.Proxy = new WebProxy(m_proxyurl, true);
                 }
             }
+            else
+                request.Proxy = null;
 
             RequestState state = new RequestState((HttpWebRequest) request, requestID);
             // IAsyncResult result = request.BeginGetResponse(new AsyncCallback(HttpRequestReturn), state);

OpenSim/Region/CoreModules/Scripting/VectorRender/VectorRenderModule.cs

@@ -826,6 +826,7 @@ namespace OpenSim.Region.CoreModules.Scripting.VectorRender
             try
             {
                 WebRequest request = HttpWebRequest.Create(url);
+                request.Proxy = null;
 //Ckrinke: Comment out for now as 'str' is unused. Bring it back into play later when it is used.
 //Ckrinke            Stream str = null;
                 HttpWebResponse response = (HttpWebResponse)(request).GetResponse();

OpenSim/Region/CoreModules/World/Archiver/ArchiveHelpers.cs

@@ -110,6 +110,7 @@ namespace OpenSim.Region.CoreModules.World.Archiver
 
             request.ContentLength = 0;
             request.KeepAlive     = false;
+            request.Proxy = null;
 
             WebResponse response = request.GetResponse();
             Stream file = response.GetResponseStream();

OpenSim/Region/CoreModules/World/Terrain/TerrainModule.cs

@@ -352,6 +352,7 @@ namespace OpenSim.Region.CoreModules.World.Terrain
 
             request.ContentLength = 0;
             request.KeepAlive = false;
+            request.Proxy = null;
 
             WebResponse response = request.GetResponse();
             Stream file = response.GetResponseStream();

OpenSim/Region/CoreModules/World/WorldMap/WorldMapModule.cs

@@ -819,6 +819,7 @@ namespace OpenSim.Region.CoreModules.World.WorldMap
 
             mapitemsrequest.Method = "POST";
             mapitemsrequest.ContentType = "application/xml+llsd";
+            mapitemsrequest.Proxy = null;
             OSDMap RAMap = new OSDMap();
 
             // string RAMapString = RAMap.ToString();

OpenSim/Region/OptionalModules/Avatar/Concierge/ConciergeModule.cs

@@ -386,7 +386,7 @@ namespace OpenSim.Region.OptionalModules.Avatar.Concierge
             updatePost.ContentType = "text/xml";
             updatePost.ContentLength = payload.Length;
             updatePost.UserAgent = "OpenSim.Concierge";
-
+            updatePost.Proxy = null;
 
             BrokerState bs = new BrokerState(uri, payload, updatePost);
             bs.Timer = new Timer(delegate(object state)

OpenSim/Region/OptionalModules/Avatar/Voice/FreeSwitchVoice/FreeSwitchVoiceModule.cs

@@ -541,6 +541,7 @@ namespace OpenSim.Region.OptionalModules.Avatar.Voice.FreeSwitchVoice
             forwardreq.Method = method;
             forwardreq.ContentType = contenttype;
             forwardreq.KeepAlive = false;
+            forwardreq.Proxy = null;
 
             if (method == "POST")
             {

OpenSim/Region/OptionalModules/Avatar/Voice/VivoxVoice/VivoxVoiceModule.cs

@@ -1119,6 +1119,7 @@ namespace OpenSim.Region.OptionalModules.Avatar.Voice.VivoxVoice
 
                 // We are sending just parameters, no content
                 req.ContentLength = 0;
+                req.Proxy = null;
 
                 // Send request and retrieve the response
                 rsp = (HttpWebResponse)req.GetResponse();

OpenSim/Region/OptionalModules/Avatar/XmlRpcGroups/XmlRpcGroupsServicesConnectorModule.cs

@@ -1150,6 +1150,7 @@ namespace Nwc.XmlRpc
             request.ContentType = "text/xml";
             request.AllowWriteStreamBuffering = true;
             request.KeepAlive = !_disableKeepAlive;
+            request.Proxy = null;
 
             Stream stream = request.GetRequestStream();
             XmlTextWriter xml = new XmlTextWriter(stream, Encoding.ASCII);

OpenSim/Region/OptionalModules/Scripting/RegionReadyModule/RegionReadyModule.cs

@@ -280,6 +280,7 @@ namespace OpenSim.Region.OptionalModules.Scripting.RegionReady
             WebRequest request = WebRequest.Create(m_uri);
             request.Method = request_method;
             request.ContentType = content_type;
+            request.Proxy = null;
 
             Stream os = null;
             try

OpenSim/Services/Connectors/Hypergrid/HeloServicesConnector.cs

@@ -77,6 +77,7 @@ namespace OpenSim.Services.Connectors
         public virtual string Helo()
         {
             HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(m_ServerURI);
+            req.Proxy = null;
             // Eventually we need to switch to HEAD
             /* req.Method = "HEAD"; */
 

OpenSim/Services/Connectors/Hypergrid/UserAgentServiceConnector.cs

@@ -125,6 +125,7 @@ namespace OpenSim.Services.Connectors.Hypergrid
             AgentCreateRequest.Method = "POST";
             AgentCreateRequest.ContentType = "application/json";
             AgentCreateRequest.Timeout = 10000;
+            AgentCreateRequest.Proxy = null;
             //AgentCreateRequest.KeepAlive = false;
             //AgentCreateRequest.Headers.Add("Authorization", authKey);
 

OpenSim/Services/Connectors/Neighbour/NeighbourServicesConnector.cs

@@ -107,6 +107,7 @@ namespace OpenSim.Services.Connectors
             helloNeighbourRequest.Method = "POST";
             helloNeighbourRequest.ContentType = "application/json";
             helloNeighbourRequest.Timeout = 10000;
+            helloNeighbourRequest.Proxy = null;
 
             // Fill it in
             OSDMap args = null;

OpenSim/Services/Connectors/SimianGrid/SimianAssetServiceConnector.cs

@@ -184,6 +184,7 @@ namespace OpenSim.Services.Connectors.SimianGrid
             {
                 HttpWebRequest request = UntrustedHttpWebRequest.Create(url);
                 request.Method = "HEAD";
+                request.Proxy = null;
 
                 using (WebResponse response = request.GetResponse())
                 {
@@ -339,7 +340,8 @@ namespace OpenSim.Services.Connectors.SimianGrid
                 // Simian does not require the asset ID to be in the URL because it's in the post data.
                 // By appending it to the URL also, we allow caching proxies (squid) to invalidate asset URLs
                 HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(m_serverUrl + asset.FullID.ToString());
-                
+                request.Proxy = null;
+
                 HttpWebResponse response = MultipartForm.Post(request, postParameters);
                 using (Stream responseStream = response.GetResponseStream())
                 {
@@ -427,6 +429,7 @@ namespace OpenSim.Services.Connectors.SimianGrid
             {
                 HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
                 request.Method = "DELETE";
+                request.Proxy = null;
 
                 using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
                 {
@@ -460,6 +463,7 @@ namespace OpenSim.Services.Connectors.SimianGrid
             try
             {
                 HttpWebRequest request = UntrustedHttpWebRequest.Create(url);
+                request.Proxy = null;
 
                 using (WebResponse response = request.GetResponse())
                 {

OpenSim/Services/Connectors/SimianGrid/SimianGridMaptileModule.cs

@@ -212,6 +212,7 @@ namespace OpenSim.Region.OptionalModules.Simian
                 HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(m_serverUrl);
                 request.Timeout = 20000;
                 request.ReadWriteTimeout = 5000;
+                request.Proxy = null;
 
                 using (HttpWebResponse response = MultipartForm.Post(request, postParameters))
                 {