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Refactor scripted http request to use async calls rather than hard threads

avinationmerge
Melanie 2013-01-20 02:08:38 +01:00
parent 903cc71f0d
commit 461ecd7cf9
1 changed files with 87 additions and 53 deletions
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140
OpenSim/Region/CoreModules/Scripting/HttpRequest/ScriptsHttpRequests.cs
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@ -206,7 +206,7 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
m_pendingRequests.Add(reqID, htc);
}
htc.Process();
htc.SendRequest();
return reqID;
}
@ -340,7 +340,6 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
public string HttpMIMEType = "text/plain;charset=utf-8";
public int HttpTimeout;
public bool HttpVerifyCert = true;
private Thread httpThread;
// Request info
private UUID _itemID;
@ -374,27 +373,11 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
public void Process()
{
httpThread = new Thread(SendRequest);
httpThread.Name = "HttpRequestThread";
httpThread.Priority = ThreadPriority.BelowNormal;
httpThread.IsBackground = true;
_finished = false;
httpThread.Start();
SendRequest();
}
/*
* TODO: More work on the response codes. Right now
* returning 200 for success or 499 for exception
*/
public void SendRequest()
{
HttpWebResponse response = null;
StringBuilder sb = new StringBuilder();
byte[] buf = new byte[8192];
string tempString = null;
int count = 0;
try
{
Request = (HttpWebRequest) WebRequest.Create(Url);
@ -409,13 +392,9 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
{
// We could hijack Connection Group Name to identify
// a desired security exception. But at the moment we'll use a dummy header instead.
// Request.ConnectionGroupName = "NoVerify";
Request.Headers.Add("NoVerifyCert", "true");
}
// else
// {
// Request.ConnectionGroupName="Verify";
// }
if (proxyurl != null && proxyurl.Length > 0)
{
if (proxyexcepts != null && proxyexcepts.Length > 0)
@ -430,10 +409,14 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
}
foreach (KeyValuePair<string, string> entry in ResponseHeaders)
{
if (entry.Key.ToLower().Equals("user-agent"))
Request.UserAgent = entry.Value;
else
Request.Headers[entry.Key] = entry.Value;
}
Request.Timeout = HttpTimeout;
// Encode outbound data
if (OutboundBody.Length > 0)
@ -441,16 +424,78 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
byte[] data = Util.UTF8.GetBytes(OutboundBody);
Request.ContentLength = data.Length;
Stream bstream = Request.GetRequestStream();
bstream.Write(data, 0, data.Length);
bstream.Close();
Request.BeginGetRequestStream(new AsyncCallback(SendRequestData), this);
return;
}
Request.Timeout = HttpTimeout;
Request.BeginGetResponse(new AsyncCallback(ProcessResponse), this);
}
catch (Exception e)
{
// Do nothing. Abort was called.
}
}
private void SendRequestData(IAsyncResult ar)
{
try
{
byte[] data = Util.UTF8.GetBytes(OutboundBody);
Stream bstream = Request.EndGetRequestStream(ar);
bstream.Write(data, 0, data.Length);
bstream.Close();
Request.BeginGetResponse(new AsyncCallback(ProcessResponse), this);
}
catch (WebException e)
{
// Abort was called. Just go away
if (e.Status == WebExceptionStatus.RequestCanceled)
return;
// Server errored on request
if (e.Status == WebExceptionStatus.ProtocolError && e.Response != null)
{
HttpWebResponse webRsp = (HttpWebResponse)e.Response;
Status = (int)webRsp.StatusCode;
try
{
using (Stream responseStream = webRsp.GetResponseStream())
{
ResponseBody = responseStream.GetStreamString();
}
}
catch
{
ResponseBody = webRsp.StatusDescription;
}
finally
{
webRsp.Close();
}
return;
}
_finished = true;
}
}
private void ProcessResponse(IAsyncResult ar)
{
HttpWebResponse response = null;
StringBuilder sb = new StringBuilder();
byte[] buf = new byte[8192];
string tempString = null;
int count = 0;
try
{
try
{
// execute the request
response = (HttpWebResponse) Request.GetResponse();
response = (HttpWebResponse) Request.EndGetResponse(ar);
}
catch (WebException e)
{
@ -485,33 +530,22 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
ResponseBody = sb.ToString().Replace("\r", "");
}
catch (Exception e)
catch (WebException e)
{
if (e is WebException && ((WebException)e).Status == WebExceptionStatus.ProtocolError)
{
HttpWebResponse webRsp = (HttpWebResponse)((WebException)e).Response;
Status = (int)webRsp.StatusCode;
try
{
using (Stream responseStream = webRsp.GetResponseStream())
{
ResponseBody = responseStream.GetStreamString();
}
}
catch
{
ResponseBody = webRsp.StatusDescription;
}
}
else
{
Status = (int)OSHttpStatusCode.ClientErrorJoker;
ResponseBody = e.Message;
}
// Abort was called. Just go away
if (e.Status == WebExceptionStatus.RequestCanceled)
return;
Status = (int)OSHttpStatusCode.ClientErrorJoker;
ResponseBody = e.Message;
_finished = true;
return;
}
catch (Exception e)
{
// Ignore
}
finally
{
if (response != null)
@ -525,7 +559,7 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
{
try
{
httpThread.Abort();
Request.Abort();
}
catch (Exception)
{