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Thank you! That did the trick.

Thank you. I can retrieve all the records and "pdf" files are created. However, each one contains the following:

{

"errorCode" : "AGW-401",

"message" : "Authorization header is not specified",

"errors" : [ {

"errorCode" : "AGW-401",

"message" : "Authorization header is not specified"

} ]

}

I am new to RingCentral programming, but it appears that the token is added to contentUri. Perhaps this isn't working because of my authentication scheme and the way I created my application. I created the application as Other Non-UI (e.g. cronjob, daemon, command line) .

I do this in my code:

var rcsdk = new RC({

server: RINGCENTRAL_SERVER,

clientId: RINGCENTRAL_CLIENTID,

clientSecret: RINGCENTRAL_CLIENTSECRET

});

var platform = rcsdk.platform();

This works to retrieve the records, but not to retrieve the contents.

Any suggestions?

Use this sample code

var async = require('async')
var fs = require('fs')
var https = require('https');

async function read_message_store_fax(){
  try {
    var resp = await platform.get('/restapi/v1.0/account/~/extension/~/message-store', {
          dateFrom: '2021-01-01T00:00:00.000Z',
          direction: ['Inbound'],
          messageType: ['Fax']
        })
    var jsonObj = await resp.json()
    for (var record of jsonObj.records){
      console.log(record)
      if (record.hasOwnProperty('attachments')){
        async.each(record.attachments,
          function(attachment, callback){
              var fileName = attachment.id + "_fax_attachment"
              var fileNameExt = attachment.contentType.split("/")
              fileName += "." + fileNameExt[1]
              download_content(attachment.uri, fileName)
              callback()
            })
      }
    }
  }catch (e){
    console.log(e.message)
  }
}

async function download_content(contentUri, fileName){
    var uri = platform.createUrl(contentUri, {addToken: true});
    download(uri, fileName, function(){
      console.log("Save atttachment to the local machine.")
    })
}

const download = function(uri, dest, cb) {
    var file = fs.createWriteStream(dest);
    var request = https.get(uri, function(response) {
  response.pipe(file);
  file.on('finish', function() {
      file.close(cb);
  });
    });
}