// -----------------------------------------------------------------------
-// <copyright file="RestClient.cs" company="Microsoft">
-// TODO: Update copyright text.
+// <copyright file="RestClient.cs" company="GRNet">
+// Copyright 2011-2012 GRNET S.A. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or
+// without modification, are permitted provided that the following
+// conditions are met:
+//
+// 1. Redistributions of source code must retain the above
+// copyright notice, this list of conditions and the following
+// disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following
+// disclaimer in the documentation and/or other materials
+// provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
+// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
+// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+// USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+// The views and conclusions contained in the software and
+// documentation are those of the authors and should not be
+// interpreted as representing official policies, either expressed
+// or implied, of GRNET S.A.
// </copyright>
// -----------------------------------------------------------------------
}
- private WebHeaderCollection _responseHeaders;
-
- public new WebHeaderCollection ResponseHeaders
- {
- get
- {
- if (base.ResponseHeaders==null)
- {
- return _responseHeaders;
- }
- else
- {
- _responseHeaders = null;
- return base.ResponseHeaders;
- }
-
- }
-
- set { _responseHeaders = value; }
- }
protected override WebRequest GetWebRequest(Uri address)
{
TimedOut = false;
var webRequest = base.GetWebRequest(address);
var request = (HttpWebRequest)webRequest;
+ request.ServicePoint.ConnectionLimit = 50;
if (IfModifiedSince.HasValue)
request.IfModifiedSince = IfModifiedSince.Value;
request.AutomaticDecompression = DecompressionMethods.Deflate | DecompressionMethods.GZip;
//Does the response have any content to log?
if (exc.Response.ContentLength > 0)
{
- var content = GetContent(exc.Response);
+ var content = LogContent(exc.Response);
Log.ErrorFormat(content);
}
return false;
public DateTime LastModified { get; private set; }
- private static string GetContent(WebResponse webResponse)
+ private static string LogContent(WebResponse webResponse)
{
if (webResponse == null)
throw new ArgumentNullException("webResponse");
Contract.EndContractBlock();
- string content;
- using (var stream = webResponse.GetResponseStream())
- using (var reader = new StreamReader(stream))
+ //The response stream must be copied to avoid affecting other code by disposing of the
+ //original response stream.
+ var stream = webResponse.GetResponseStream();
+ using(var memStream=new MemoryStream())
+ using (var reader = new StreamReader(memStream))
{
- content = reader.ReadToEnd();
+ stream.CopyTo(memStream);
+ string content = reader.ReadToEnd();
+
+ stream.Seek(0,SeekOrigin.Begin);
+ return content;
}
- return content;
}
public string DownloadStringWithRetry(string address,int retries=0)
var actualRetries = (retries == 0) ? Retries : retries;
-
+ var uriString = String.Join("/", BaseAddress.TrimEnd('/'), actualAddress);
+
var task = Retry(() =>
- {
- var uriString = String.Join("/", BaseAddress.TrimEnd('/'), actualAddress);
+ {
var content = base.DownloadString(uriString);
if (StatusCode == HttpStatusCode.NoContent)
}, actualRetries);
- var result = task.Result;
- return result;
+ try
+ {
+ var result = task.Result;
+ return result;
+
+ }
+ catch (AggregateException exc)
+ {
+ //If the task fails, propagate the original exception
+ if (exc.InnerException!=null)
+ throw exc.InnerException;
+ throw;
+ }
}
public void Head(string address,int retries=0)
if (method == "PUT")
request.ContentLength = 0;
+ //Have to use try/finally instead of using here, because WebClient needs a valid WebResponse object
+ //in order to return response headers
var response = (HttpWebResponse)GetWebResponse(request);
- //var response = (HttpWebResponse)request.GetResponse();
+ try
+ {
+ LastModified = response.LastModified;
+ StatusCode = response.StatusCode;
+ StatusDescription = response.StatusDescription;
+ }
+ finally
+ {
+ response.Close();
+ }
- //ResponseHeaders= response.Headers;
-
- LastModified = response.LastModified;
- StatusCode = response.StatusCode;
- StatusDescription = response.StatusDescription;
- response.Close();
return 0;
}, actualRetries);