Hi All,
I am trying to retrieve Blob from Azure Blob Storage. I'm using the code below to connect, but I'm getting 403: Forbidden. Any idea how I can fix this? Thank you
public static void UsingGet()
{
string storageKey = "<StorageKey>";
string storageAccount = "<Storageaccountname>";
string containerName = "<containername>";
string blobName = "<filename>";
string method = "GET";
string requestUri = $"https://{storageAccount}.blob.core.windows.net/{containerName}/{blobName}";
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(requestUri);
request.Method = method;
request.ContentLength = 0;
string now = DateTime.UtcNow.ToString("R");
request.Headers.Add("x-ms-version", "2018-03-28");
request.Headers.Add("x-ms-date", now);
request.Headers.Add("x-ms-blob-type", "BlockBlob");
request.Headers.Add("Authorization", AuthorizationHeader(method, now, request, storageAccount, storageKey, containerName, blobName));
Console.WriteLine(request.Headers.ToString());
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
}
public static string AuthorizationHeader(string method, string now, HttpWebRequest request, string storageAccount, string storageKey, string containerName, string blobName)
{
string headerResource = $"x-ms-blob-type:BlockBlob\nx-ms-date:{now}\nx-ms-version:2018-03-28";
string urlResource = $"https://{storageAccount}.blob.core.windows.net/{containerName}/{blobName}";
string stringToSign = $"{method}\n\n\n{request.ContentLength}\n\n{request.ContentType}\n\n\n\n\n\n\n{headerResource}\n{urlResource}";
HMACSHA256 hmac = new HMACSHA256(Convert.FromBase64String(storageKey));
string signature = Convert.ToBase64String(hmac.ComputeHash(Encoding.UTF8.GetBytes(stringToSign)));
String AuthorizationHeader = String.Format("{0} {1}:{2}", "SharedKey", storageAccount, signature);
return AuthorizationHeader;
}
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