Upload a binary data from request body to Azure BLOB storage in Node.js [restify]

upload-blob-azure.js

//NOTE: Do not use restify.bodyParser() - it blocks piping
//vars
var azure = require('azure-storage');

// ... BLOB connection skipped ...

//Option 1 - Piping req stream to BLOB write stream (elegant)
function (req, res, next) {
  //create write stream for blob
  var stream = azure.createWriteStreamToBlockBlob(
    containerID, 
    blobID);
  //pipe req to Azure BLOB write stream
  req.pipe(stream);
  req.on('error', function (error) {
    //KO - handle piping errors
  });
  req.once('end', function () {
    //OK
  });
}

//Option 2 - Using req as a stream (it is actually a Readable stream)
function (req, res, next) {
   azure.createBlockBlobFromStream(
      containerID, 
      BlobID,
      req,
      req.contentLength(),
      function (error, result, response) { 
        //handle result
      });
}

//Option 3 - flush the req content to a Buffer and pass it like a binary string
function (req, res, next) {
  azure.createBlockBlobFromText(
    ContainerID, 
    BlobID,
    req.read(), //convert req content to a Buffer
    function (error, result, response) {
      //handle result
    });
}