C# Softlayer对象存储ETag MD5校验和计算
我试图弄清楚在将数据传递到Softlayer对象存储时如何计算正确的校验和 我知道ETag是个问题,因为如果我从请求中删除它,它就可以工作,但是我更愿意使用它来验证上传是否损坏 这是我的方法:C# Softlayer对象存储ETag MD5校验和计算,c#,ibm-cloud-infrastructure,C#,Ibm Cloud Infrastructure,我试图弄清楚在将数据传递到Softlayer对象存储时如何计算正确的校验和 我知道ETag是个问题,因为如果我从请求中删除它,它就可以工作,但是我更愿意使用它来验证上传是否损坏 这是我的方法: public bool SaveFile(byte[] file, eFetchStorageContainers container, string internalFileName, string fileName = "", bool overPublicNetwork = false)
public bool SaveFile(byte[] file, eFetchStorageContainers container, string internalFileName, string fileName = "", bool overPublicNetwork = false)
{
Authenticate(overPublicNetwork);
client = new RestClient(storage_url);
var resourcePath = string.Format("/{0}/{1}", container, internalFileName);
var req = new RestRequest(resourcePath, RestSharp.Method.PUT);
req.AddHeader("X-Auth-Token", auth_token);
req.AddFile(internalFileName, file, fileName);
var md5Checksum = BitConverter.ToString(MD5.Create().ComputeHash(file)).Replace("-", string.Empty).ToLower();
req.AddHeader("ETag", md5Checksum);
var resp = client.Execute(req);
return false;
}
以下是ETag的定义:
我相信问题在于我得到的是文件的校验和,而不是请求主体
curl-X PUT-T“C:\Users\ncabero\Downloads\picture.jpg“-H”X-Auth-Token:Auth_uuxxxxxxx“-H”Etag:a43bf68dd35599a7873c12128f71b1f4”我实际上明白了这一点,我使用的是RestSharp,但是它不可能获得请求体 我转到HttpClient,并能够访问请求主体以创建校验和
var httpClient = new HttpClient();
httpClient.DefaultRequestHeaders.Add("X-Auth-Token", auth_token);
var bytes = new ByteArrayContent(file);
var formData = new MultipartFormDataContent();
formData.Add(bytes, internalFileName, internalFileName);
// this creates a checksum to send over for verification of non corrupted transfers
// this is also prevents us from using RestSharp due to its inability to create a checksum of the request body prior to sending
var md5Checksum = BitConverter.ToString(MD5.Create().ComputeHash(formData.ReadAsByteArrayAsync().Result)).Replace("-", string.Empty).ToLower();
httpClient.DefaultRequestHeaders.Add("ETag", md5Checksum);
var url = string.Format("{0}/{1}{2}/{3}", storage_url, containerName, folderId, internalFileName);
var resp = httpClient.PutAsync(url, formData).Result;
httpClient.Dispose();