Hi there!
Just new to pipedream, very excited about it 
I am not at all a coder… so here it goes.
I have managed to use n8n.io to get past the CRC token of Twitter (Securing webhooks | Docs | Twitter Developer Platform), that’s quite straightforward using their visual nodes. I would like to use pipedream as I noticed it can scale better - however, I do not know how to manage this CRC token thing with pipedream! My best guess is to use nodeJS or python, but as I said - I am entirely lost with coding…
Can somebody help me to code this part?
Twitter docs give examples of using it with python:
Example response token generation in Python:
The following defines a route in a Python 2.7 Flask webapp that will respond to the challenge response check correctly.
import base64
import hashlib
import hmac
import json
# Defines a route for the GET request
@app.route('/webhooks/twitter', methods=['GET'])
def webhook_challenge():
# creates HMAC SHA-256 hash from incomming token and your consumer secret
sha256_hash_digest = hmac.new(TWITTER_CONSUMER_SECRET, msg=request.args.get('crc_token'), digestmod=hashlib.sha256).digest()
# construct response data with base64 encoded hash
response = {
'response_token': 'sha256=' + base64.b64encode(sha256_hash_digest)
}
# returns properly formatted json response
return json.dumps(response)
and js node:
const crypto = require('crypto')
/**
* Creates a HMAC SHA-256 hash created from the app TOKEN and
* your app Consumer Secret.
* @param token the token provided by the incoming GET request
* @return string
*/
module.exports.get_challenge_response = function(crc_token, consumer_secret) {
hmac = crypto.createHmac('sha256', consumer_secret).update(crc_token).digest('base64')
return hmac
}
But I have no idea how to make it so that it will work. I have no doubt this is a piece of cake for any of you!
Going further, I would like to filter different activities so that only DMs get passed through to another webhook (that’s for later 
)
Thanks!