Question

我有一个nodejs应用程序，它生成一个用于将文件上传到AWS S3的签名URL。我想使用这个签名的URL从C＃winforms应用程序上传文件到S3。

在我的C＃代码中，当我使用我从nodejs服务器获取的签名网址上传文件到S3时，我收到此错误：

The connection was forcibly closed by the remote host

但如果我使用C＃生成签名网址，则文件会成功上传。我尝试编码和解码我从nodejs得到的网址没有运气。 C＃和nodejs服务器都在我的localhost中工作，因此应该没有时间差异。

由c＃（工作）和nodejs（不工作）生成的示例url：

// c# generated, works
https://mybucket.s3-eu-west-1.amazonaws.com/folder/547dac915711b69f18241920.flv?AWSAccessKeyId=AKIAILNOHZMPD62PBJGQ&Expires=1417970769&Signature=8ePjR1%2FrQb35YU2AR%2B6480vjiuM%3D

// nodejs generated, does not work
https://mybucket.s3-eu-west-1.amazonaws.com/folder/547dac915711b69f18241920.flv?AWSAccessKeyId=AKIAILNOHZMPD62PBJGQ&Expires=1417967527&Signature=rIbJ2zuknWwFG92Lh7VGAhqYE0I%3D

生成签名网址的nodejs代码：

// this signed url does not work
var params = { Bucket: bucket, Key: folder + "/" + filename, Expires: 3600 };
s3.getSignedUrl('getObject', params, callback);

生成签名网址的c＃代码：

// this signed url works
GetPreSignedUrlRequest request = new GetPreSignedUrlRequest
{
    BucketName = "mybucket",
    Key = "folder/" + _id + ".flv",
    Verb = HttpVerb.PUT,
    Expires = DateTime.Now.AddMinutes(5)
};

string url = null;
url = s3Client.GetPreSignedURL(request);

上传文件的C＃代码：

HttpWebRequest httpRequest = WebRequest.Create(url) as HttpWebRequest;
httpRequest.Method = "PUT";
using (Stream dataStream = httpRequest.GetRequestStream())
{
    byte[] buffer = new byte[8000];
    using (FileStream fileStream = new FileStream(filename, FileMode.Open, FileAccess.Read))
    {
        int bytesRead = 0;
        while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) > 0)
        {
            dataStream.Write(buffer, 0, bytesRead);
        }
    }
}

HttpWebResponse response = httpRequest.GetResponse() as HttpWebResponse;

为什么我的nodejs生成的url不起作用，但我的C＃生成的url有效？如何让我的nodejs生成签名网址？

Answer 1

我解决了这个问题。问题出在nodejs代码的这一行：

s3.getSignedUrl('getObject', params, callback);

应该是

s3.getSignedUrl('putObject', params, callback);

代替。

无法使用nodejs生成签名网址上传到s3

1 个答案: