Verify webhook URL causes KeyError: 'destination' with 1.12.0

[tsaiid]

The release of 1.12.0 introduced a feature:

• destination in webhook request (New field 'destination' in Webhook request #178).

However, when trying to verify the webhook URL in the developers console, the request body does not have a destination tag, as below:

{
  "events": [
    {
      "replyToken": "00000000000000000000000000000000",
      "type": "message",
      "timestamp": 1561099010135,
      "source": {
        "type": "user",
        "userId": "Udeadbeefdeadbeefdeadbeefdeadbeef"
      },
      "message": {
        "id": "100001",
        "type": "text",
        "text": "Hello, world"
      }
    },
    {
      "replyToken": "ffffffffffffffffffffffffffffffff",
      "type": "message",
      "timestamp": 1561099010135,
      "source": {
        "type": "user",
        "userId": "Udeadbeefdeadbeefdeadbeefdeadbeef"
      },
      "message": {
        "id": "100002",
        "type": "sticker",
        "packageId": "1",
        "stickerId": "1"
      }
    }
  ]
}

Then a KeyErr will be evoked.

Traceback (most recent call last):
  File "/home/ittsai/.local/share/virtualenvs/femhrad-linebot-QHVSuSA1/lib/python3.7/site-packages/flask/app.py", line 2311, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/ittsai/.local/share/virtualenvs/femhrad-linebot-QHVSuSA1/lib/python3.7/site-packages/flask/app.py", line 1834, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/ittsai/.local/share/virtualenvs/femhrad-linebot-QHVSuSA1/lib/python3.7/site-packages/flask/app.py", line 1737, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/home/ittsai/.local/share/virtualenvs/femhrad-linebot-QHVSuSA1/lib/python3.7/site-packages/flask/_compat.py", line 36, in reraise
    raise value
  File "/home/ittsai/.local/share/virtualenvs/femhrad-linebot-QHVSuSA1/lib/python3.7/site-packages/flask/app.py", line 1832, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/ittsai/.local/share/virtualenvs/femhrad-linebot-QHVSuSA1/lib/python3.7/site-packages/flask/app.py", line 1818, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/home/ittsai/git/femhrad-linebot/callback.py", line 149, in callback
    handler.handle(body, signature)
  File "/home/ittsai/.local/share/virtualenvs/femhrad-linebot-QHVSuSA1/lib/python3.7/site-packages/linebot/webhook.py", line 235, in handle
    payload = self.parser.parse(body, signature, as_payload=True)
  File "/home/ittsai/.local/share/virtualenvs/femhrad-linebot-QHVSuSA1/lib/python3.7/site-packages/linebot/webhook.py", line 175, in parse
    return WebhookPayload(events=events, destination=body_json['destination'])
KeyError: 'destination'

My callback server is base on line-bot-sdk-python/examples/flask-echo/app.py

I think this situation may be handled in the SDK level.

[okue]

Thanks for your reporting. I'll fix this problem.

[okue]

We fixed in #187.
This fix is included in Release 1.12.1.