Use base64 for encoding of binary data in HAR

[velle]

This is an excerpt from a HAR file that I exported from Requestly Desktop App

"response": {
  "status": 200,
  "httpVersion": "HTTP/1.1",
  "cookies": [],
  "content": {
    "size": 0,
    "compression": 0,
    "text": "{\"0\":137,\"1\":80,\"2\":78,\"3\":71,\"4\":13,\"5\":10,\"6\":26, (......) }",
    "mimeType": "image/png"
  },
  (......)
}

I could not find any official HAR specification (do you know of such? :D ), but this was the closest I could find: http://www.softwareishard.com/blog/har-12-spec/.

If the request or response body can not be represented in UTF-8, they suggest encoding it using base64, and then setting another attribute "encoding":"base64".

"response": {
  "status": 200,
  "httpVersion": "HTTP/1.1",
  "cookies": [],
  "content": {
    "size": 0,
    "compression": 0,
    "encoding":"base64",
    "text": "PGh0bW(.....)",
    "mimeType": "image/png"
  },
  (......)
}

Is there any good reason why you chose to encode it this way, instead of just base64? :) As far as I can tell, that would be a lot simpler to handle, and more concise as well.

Sincerely, Thomas