How to send HttpPostedFileBase to S3 via AWS SDK - asp.net-mvc

Question

I'm having some trouble getting uploaded files to save to S3. My first attempt was:
Result SaveFile(System.Web.HttpPostedFileBase file, string path)
{
//Keys are in web.config
var t = new Amazon.S3.Transfer.TransferUtility(Amazon.RegionEndpoint.USWest2);
try
{
t.Upload(new Amazon.S3.Transfer.TransferUtilityUploadRequest
{
BucketName = Bucket,
InputStream = file.InputStream,
Key = path
});
}
catch (Exception ex)
{
return Result.FailResult(ex.Message);
}
return Result.SuccessResult();
}
This throws an exception with the message: "The request signature we calculated does not match the signature you provided. Check your key and signing method." I also tried copying file.InputStream to a MemoryStream, then uploading that, with the same error.
If I set the InputStream to:
new FileStream(#"c:\folder\file.txt", FileMode.Open)
then the file uploads fine. Do I really need to save the file to disk before uploading it?

Answer 1

This is my working version first the upload method:
public bool Upload(string filePath, Stream inputStream, double contentLength, string contentType)
{
try
{
var request = new PutObjectRequest();
request.WithBucketName(_bucketName)
.WithCannedACL(S3CannedACL.PublicRead)
.WithKey(filePath).InputStream = inputStream;
request.AddHeaders(AmazonS3Util.CreateHeaderEntry("ContentType", contentType));
_amazonS3Client.PutObject(request);
}
catch (Exception exception)
{
// log or throw;
return false;
}
return true;
}
I just get the stream from HttpPostedFileBase.InputStream
(Note, this is on an older version of the Api, the WithBucketName syntax is no longer supported, but just set the properties directly)

Answer 2

Following the comment of shenku, for newer versions of SDK.
public bool Upload(string filePath, Stream inputStream, double contentLength, string contentType)
{
try
{
var request = new PutObjectRequest();
string _bucketName = "";
request.BucketName = _bucketName;
request.CannedACL = S3CannedACL.PublicRead;
request.InputStream = inputStream;
request.Key = filePath;
request.Headers.ContentType = contentType;
PutObjectResponse response = _amazonS3Client.PutObject(request);
return true;
}catch(Exception ex)
{
return false;
}
}