Azure PUT Blob authentication fails in R

Question

I would like to use R and the Azure Storage\'s Put Blob API to put files into my blob storage account but it fails to authenticate my request. Unfortunately, I couldn\'t find an

Answer 1

I managed to resolve this issue by putting the "\n" characters and everything in the right place. Based on Gaurav Mantri's help, I used:
https://docs.microsoft.com/en-us/rest/api/storageservices/authentication-for-the-azure-storage-services

The following changes in the 'signature_string' worked:

signature_string <- paste0("PUT", "\n",            # HTTP Verb
                           "\n",                   # Content-Encoding  
                           "\n",                   # Content-Language
                           content_length, "\n",   # Content-Length
                           "\n",                   # Content-MD5
                           "text/plain", "\n",     # Content-Type
                           "\n",                   # Date
                           "\n",                   # If-Modified-Since
                           "\n",                   # If-Match  
                           "\n",                   # If-None-Match
                           "\n",                   # If-Unmodified-Since
                           "\n",                   # Range
                           # Here comes the Canonicalized Headers
                           "x-ms-blob-type:BlockBlob","\n",
                           "x-ms-date:",requestdate,"\n",
                           "x-ms-version:2015-02-21","\n",
                           # Here comes the Canonicalized Resource
                           "/",account, "/",container,"/", filename)