title: A WebException with status TrustFailure was thrown. AmazonS3 .net 3.5 Version 3 invoking from sharepoint 2010
body: <p>Currently I am working in POC with CRUD operations using AmazonS3 Sdk for .net 3.5 version 3. I am trying to retrieve the Region Endpoint(Location) of the specific bucket name using secret key and Access Key and bucket name( has Location: EU (Frankfurt) (eu-central-1)). in order to establish connection 
  with AmazonS3 and perform CRUD operations
  So I get the  A WebException with status TrustFailure was thrown when I tried to get the Region Endpoint from share point(web page I create my own page using the master page of SharePoint) in order to create AmazonS3Client instance with Region Retrieve.<br>
  with the following code:</p>
  
  <pre><code>private string defaultAmazonHttpsHost = "https://s3.amazonaws.com";
  private string defaultAmazonHttpHost = "http://s3.amazonaws.com"; 
  
  private Amazon.RegionEndpoint GetRegionEndpoint(string bucket, BasicAWSCredentials amazonCredentials, bool useSSL)
  {
      Amazon.RegionEndpoint regiongEndpoint = null;
      AmazonS3Config configurationClient = new AmazonS3Config();
      configurationClient.UseHttp = !useSSL;
      configurationClient.ServiceURL = useSSL ? defaultAmazonHttpsHost : defaultAmazonHttpHost;
      try
      {
          using (AmazonS3Client clientConnection = new AmazonS3Client(amazonCredentials, configurationClient))
          {
              GetBucketLocationRequest locationRequest = new GetBucketLocationRequest();
              locationRequest.BucketName = bucket;
              string locationName = clientConnection.GetBucketLocation(locationRequest).Location.Value;
              if (locationName.Equals("EU", StringComparison.InvariantCultureIgnoreCase))
              {
                  regiongEndpoint = Amazon.RegionEndpoint.EUWest1;
              }
              else if (string.IsNullOrEmpty(locationName))
              {
                  regiongEndpoint = Amazon.RegionEndpoint.USEast1;
              }
              else
              {
                  regiongEndpoint = Amazon.RegionEndpoint.GetBySystemName(locationName);
              }
          }
      }
      catch (AmazonS3Exception amazonS3Exception)
      {
            throw amazonS3Exception;
      }
      catch (Exception unExpectedException)
      {
          throw unExpectedException;
      }
      return regiongEndpoint;
  }
  BasicAWSCredentials credentials = new BasicAWSCredentials("my access Key", "my secret key");
  AmazonS3Config configurationAmazon = new AmazonS3Config();
  configurationAmazon.RegionEndpoint = GetRegionEndpoint("bucketName", credentials, false);
   AmazonS3Client _s3 = new AmazonS3Client(credentials, configurationAmazon );
  </code></pre>
  
  <p>My task Perform CRUD operations + test connection with AmazonS3 Sdk .net 3.5 version 3 , with the source  information :
  -secret key
  - access key
  - bucket Name</p>
  
  <p>the  strange is if this part code run(execute) since another Project (without share point interaction for example: Console Project) I do not get this exception) Do you know what is the problem?</p>