Fix "save iar" hanging permanently if the asset request phase times out.

Unlike "save oar", this was happening on the same thread as the original request.
The timeout happens on another so the original thread is never aborted.
On "save oar" this leaves the thread hanging (still bad) but on "save iar" it left the console thread hanging.
Temporary fix is to make "save iar" do asset request on a separate thread, like "save oar".
Longer term fix will be to restructure asset save to use a ManualResetEvent rather than a separate timeout timer.

OpenSim/Region/CoreModules/Avatar/Inventory/Archiver/InventoryArchiveWriteRequest.cs

@@ -337,11 +337,14 @@ namespace OpenSim.Region.CoreModules.Avatar.Inventory.Archiver
                 {
                     m_log.DebugFormat("[INVENTORY ARCHIVER]: Saving {0} assets for items", m_assetUuids.Count);
 
-                    new AssetsRequest(
+                    AssetsRequest ar
-                        new AssetsArchiver(m_archiveWriter),
+                        = new AssetsRequest(
-                        m_assetUuids, m_scene.AssetService,
+                            new AssetsArchiver(m_archiveWriter),
-                        m_scene.UserAccountService, m_scene.RegionInfo.ScopeID,
+                            m_assetUuids, m_scene.AssetService,
-                        options, ReceivedAllAssets).Execute();
+                            m_scene.UserAccountService, m_scene.RegionInfo.ScopeID,
+                            options, ReceivedAllAssets);
+
+                    Util.FireAndForget(o => ar.Execute());
                 }
                 else
                 {

OpenSim/Region/CoreModules/Avatar/Inventory/Archiver/Tests/InventoryArchiveTestCase.cs

@@ -82,7 +82,25 @@ namespace OpenSim.Region.CoreModules.Avatar.Inventory.Archiver.Tests
         
         protected string m_item1Name = "Ray Gun Item";
         protected string m_coaItemName = "Coalesced Item";
-        
+
+        [TestFixtureSetUp]
+        public void FixtureSetup()
+        {
+            // Don't allow tests to be bamboozled by asynchronous events.  Execute everything on the same thread.
+            Util.FireAndForgetMethod = FireAndForgetMethod.RegressionTest;
+
+            ConstructDefaultIarBytesForTestLoad();
+        }
+
+        [TestFixtureTearDown]
+        public void TearDown()
+        {
+            // We must set this back afterwards, otherwise later tests will fail since they're expecting multiple
+            // threads.  Possibly, later tests should be rewritten so none of them require async stuff (which regression
+            // tests really shouldn't).
+            Util.FireAndForgetMethod = Util.DefaultFireAndForgetMethod;
+        }
+
         [SetUp]
         public override void SetUp()
         {
@@ -90,12 +108,6 @@ namespace OpenSim.Region.CoreModules.Avatar.Inventory.Archiver.Tests
             m_iarStream = new MemoryStream(m_iarStreamBytes);
         }
         
-        [TestFixtureSetUp]
-        public void FixtureSetup()
-        {
-            ConstructDefaultIarBytesForTestLoad();
-        }
-        
         protected void ConstructDefaultIarBytesForTestLoad()
         {
 //            log4net.Config.XmlConfigurator.Configure();

OpenSim/Region/CoreModules/Avatar/Inventory/Archiver/Tests/InventoryArchiverTests.cs

@@ -49,7 +49,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Inventory.Archiver.Tests
 {
     [TestFixture]
     public class InventoryArchiverTests : InventoryArchiveTestCase
-    {   
+    {
         protected TestScene m_scene;
         protected InventoryArchiverModule m_archiverModule;
             
@@ -69,7 +69,7 @@ namespace OpenSim.Region.CoreModules.Avatar.Inventory.Archiver.Tests
         public void TestLoadCoalesecedItem()
         {
             TestHelpers.InMethod();
-//            log4net.Config.XmlConfigurator.Configure();
+//            TestHelpers.EnableLogging();
             
             UserAccountHelpers.CreateUserWithInventory(m_scene, m_uaLL1, "password");
             m_archiverModule.DearchiveInventory(m_uaLL1.FirstName, m_uaLL1.LastName, "/", "password", m_iarStream);            

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

@@ -129,6 +129,10 @@ namespace OpenSim.Region.CoreModules.World.Archiver
             m_options = options;
             m_repliesRequired = uuids.Count;
 
+            // FIXME: This is a really poor way of handling the timeout since it will always leave the original requesting thread
+            // hanging.  Need to restructure so an original request thread waits for a ManualResetEvent on asset received
+            // so we can properly abort that thread.  Or request all assets synchronously, though that would be a more
+            // radical change
             m_requestCallbackTimer = new System.Timers.Timer(TIMEOUT);
             m_requestCallbackTimer.AutoReset = false;
             m_requestCallbackTimer.Elapsed += new ElapsedEventHandler(OnRequestCallbackTimeout);