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Allow a viewer UDP image request retry to trigger another asset fetch if an existing fetch hasn't responded before a timeout. 

This is to stop a high priority image/texture request from blocking the entire download queue if its asset fetch got dropped for some reason.
iar_mods
Justin Clark-Casey (justincc) 2012-01-19 23:09:16 +00:00
parent d38e2c0c91
commit ea72428c9d
2 changed files with 32 additions and 6 deletions
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32
OpenSim/Region/ClientStack/Linden/UDP/J2KImage.cs
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@ -45,6 +45,15 @@ namespace OpenSim.Region.ClientStack.LindenUDP
private const int IMAGE_PACKET_SIZE = 1000;
private const int FIRST_PACKET_SIZE = 600;
/// <summary>
/// If we've requested an asset but not received it in this ticks timeframe, then allow a duplicate
/// request from the client to trigger a fresh asset request.
/// </summary>
/// <remarks>
/// There are 10,000 ticks in a millisecond
/// </remarks>
private const int ASSET_REQUEST_TIMEOUT = 100000000;
private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
public uint LastSequence;
@ -57,8 +66,22 @@ namespace OpenSim.Region.ClientStack.LindenUDP
public UUID AgentID;
public IInventoryAccessModule InventoryAccessModule;
private OpenJPEG.J2KLayerInfo[] m_layers;
/// <summary>
/// Has this request decoded the asset data?
/// </summary>
public bool IsDecoded { get; private set; }
/// <summary>
/// Has this request received the required asset data?
/// </summary>
public bool HasAsset { get; private set; }
/// <summary>
/// Time in milliseconds at which the asset was requested.
/// </summary>
public long AssetRequestTime { get; private set; }
public C5.IPriorityQueueHandle<J2KImage> PriorityQueueHandle;
private uint m_currentPacket;
@ -123,10 +146,15 @@ namespace OpenSim.Region.ClientStack.LindenUDP
{
if (!HasAsset)
{
if (!m_assetRequested)
if (!m_assetRequested || DateTime.UtcNow.Ticks > AssetRequestTime + ASSET_REQUEST_TIMEOUT)
{
// m_log.DebugFormat(
// "[J2KIMAGE]: Requesting asset {0} from request in packet {1}, already requested? {2}, due to timeout? {3}",
// TextureID, LastSequence, m_assetRequested, DateTime.UtcNow.Ticks > AssetRequestTime + ASSET_REQUEST_TIMEOUT);
m_assetRequested = true;
// m_log.DebugFormat("[J2KIMAGE]: Requesting asset {0}", TextureID);
AssetRequestTime = DateTime.UtcNow.Ticks;
AssetService.Get(TextureID.ToString(), this, AssetReceived);
}
}

6
OpenSim/Region/ClientStack/Linden/UDP/LLImageManager.cs
View File

@ -101,9 +101,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
// Do a linear search for this texture download
lock (m_syncRoot)
{
m_priorityQueue.Find(delegate(J2KImage img) { return img.TextureID == newRequest.RequestedAssetID; }, out imgrequest);
}
if (imgrequest != null)
{
@ -124,8 +122,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
// "[LL IMAGE MANAGER]: Received duplicate of existing request for {0}, start packet {1} from {2}",
// newRequest.RequestedAssetID, newRequest.PacketNumber, m_client.Name);
//m_log.DebugFormat("[TEX]: (UPD) ID={0}: D={1}, S={2}, P={3}",
// newRequest.RequestedAssetID, newRequest.DiscardLevel, newRequest.PacketNumber, newRequest.Priority);
// m_log.DebugFormat("[TEX]: (UPD) ID={0}: D={1}, S={2}, P={3}",
// newRequest.RequestedAssetID, newRequest.DiscardLevel, newRequest.PacketNumber, newRequest.Priority);
//Check the packet sequence to make sure this isn't older than
//one we've already received