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For the GetTexture capability, if a data range is requested that covers the whole asset length, return HTTP PartialContent instead of NotFound 

NotFound is obviously wrong, and this change stops viewer 3.2.2 (and v probably earlier) complaining in the log about missing textures that are actually present.
We still return PartialContent even if the range requested is a superset of the data range as per httpd's behaviour
https://issues.apache.org/bugzilla/show_bug.cgi?id=51878
Viewer 3.2.2 and very probably earlier appear happy with this.
Whether fixing this NotFound bug has any practical effect apart from resolve viewer log messages is unknown.
iar_mods
Justin Clark-Casey (justincc) 2011-12-05 18:35:03 +00:00
parent a2d98c7293
commit 37889eb3fa
1 changed files with 25 additions and 14 deletions
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37
OpenSim/Capabilities/Handlers/GetTexture/GetTextureHandler.cs
View File

@ -111,6 +111,10 @@ namespace OpenSim.Capabilities.Handlers
m_log.Warn("[GETTEXTURE]: Failed to parse a texture_id from GetTexture request: " + httpRequest.Url);
}
// m_log.DebugFormat(
// "[GETTEXTURE]: For texture {0} sending back response {1}, data length {2}",
// textureID, httpResponse.StatusCode, httpResponse.ContentLength);
httpResponse.Send();
return null;
}
@ -210,7 +214,7 @@ namespace OpenSim.Capabilities.Handlers
private void WriteTextureData(OSHttpRequest request, OSHttpResponse response, AssetBase texture, string format)
{
string range = request.Headers.GetOne("Range");
//m_log.DebugFormat("[GETTEXTURE]: Range {0}", range);
if (!String.IsNullOrEmpty(range)) // JP2's only
{
// Range request
@ -222,23 +226,27 @@ namespace OpenSim.Capabilities.Handlers
if (start >= texture.Data.Length)
{
response.StatusCode = (int)System.Net.HttpStatusCode.RequestedRangeNotSatisfiable;
return;
}
else
{
end = Utils.Clamp(end, 0, texture.Data.Length - 1);
start = Utils.Clamp(start, 0, end);
int len = end - start + 1;
end = Utils.Clamp(end, 0, texture.Data.Length - 1);
start = Utils.Clamp(start, 0, end);
int len = end - start + 1;
//m_log.Debug("Serving " + start + " to " + end + " of " + texture.Data.Length + " bytes for texture " + texture.ID);
//m_log.Debug("Serving " + start + " to " + end + " of " + texture.Data.Length + " bytes for texture " + texture.ID);
if (len < texture.Data.Length)
// Always return PartialContent, even if the range covered the entire data length
// We were accidentally sending back 404 before in this situation
// https://issues.apache.org/bugzilla/show_bug.cgi?id=51878 supports sending 206 even if the
// entire range is requested, and viewer 3.2.2 (and very probably earlier) seems fine with this.
response.StatusCode = (int)System.Net.HttpStatusCode.PartialContent;
response.ContentLength = len;
response.ContentType = texture.Metadata.ContentType;
response.AddHeader("Content-Range", String.Format("bytes {0}-{1}/{2}", start, end, texture.Data.Length));
response.ContentLength = len;
response.ContentType = texture.Metadata.ContentType;
response.AddHeader("Content-Range", String.Format("bytes {0}-{1}/{2}", start, end, texture.Data.Length));
response.Body.Write(texture.Data, start, len);
response.Body.Write(texture.Data, start, len);
}
}
else
{
@ -257,6 +265,10 @@ namespace OpenSim.Capabilities.Handlers
response.ContentType = "image/" + format;
response.Body.Write(texture.Data, 0, texture.Data.Length);
}
// m_log.DebugFormat(
// "[GETTEXTURE]: For texture {0} requested range {1} responded {2} with content length {3} (actual {4})",
// texture.FullID, range, response.StatusCode, response.ContentLength, texture.Data.Length);
}
private bool TryParseRange(string header, out int start, out int end)
@ -275,7 +287,6 @@ namespace OpenSim.Capabilities.Handlers
return false;
}
private byte[] ConvertTextureData(AssetBase texture, string format)
{
m_log.DebugFormat("[GETTEXTURE]: Converting texture {0} to {1}", texture.ID, format);