add server and messenger snippets

Author: maxkahan

.env.dist

@@ -15,7 +15,10 @@ WHATSAPP_NUMBER='YOUR_WHATSAPP_NUMBER'
 CATALOG_ID='YOUR_CATALOG_ID'
 PRODUCT_RETAILER_ID='YOUR_PRODUCT_RETAILER_ID'
 VIBER_SERVICE_MESSAGE_ID='YOUR_VIBER_SERVICE_MESSAGE_ID'
+AUDIO_URL='EXAMPLE_AUDIO_URL'
 IMAGE_URL='EXAMPLE_IMAGE_URL'
+FILE_URL='EXAMPLE_FILE_URL'
+VIDEO_URL='EXAMPLE_VIDEO_URL'
 WHATSAPP_TEMPLATE_REPLACEMENT_TEXT='EXAMPLE_TEMPLATE_REPLACEMENT_TEXT'
 RCS_SENDER_ID='YOUR_RCS_SENDER_ID'
 

decode-jwt/README.md

@@ -0,0 +1,39 @@
+# Verifying Signed Webhooks Demo
+
+This quick demo shows how to verify an incoming Webhook signature by decoding the incoming JWT sent by Vonage.
+
+For signed incoming SMS signatures through the Messaging API, please see the snippet for verifying a signed incoming SMS message instead.
+
+## Usage
+
+You may want to use a localhost tunnel agent such as [ngrok](https://ngrok.com/) for local testing.
+
+### Set Up Your Enviroment
+
+Install dependencies with `pip` in a virtual environment:
+
+```bash
+python3 -m venv venv
+. ./venv/bin/activate
+
+# Point to the requirements file in the root of the python-code-snippets repo
+pip install -r requirements.txt
+```
+
+### Set Up an Incoming Webhook
+1. Start ngrok with `ngrok http 8000`. ngrok will give you a forwarding address you can now use to recieve event webhooks.
+1. Go to the [Customer Dashboard](https://dashboard.nexmo.com/sign-in).
+1. Click on ["Applications"](https://dashboard.nexmo.com/applications).
+1. Click the three dots and select "Edit" for the application you are using.
+1. Under "Capabilities", enter `https://your-ngrok-url/events` for the Voice capability.
+1. Click "Save".
+
+### Start the FastAPI Server
+
+Run the FastAPI server with
+
+```bash
+fastapi dev decode-jwt/main.py
+```
+
+You can now create a voice call using the voice sample in this repo. This sample app will verify the incoming signature.

decode-jwt/main.py

@@ -0,0 +1,28 @@
+import os
+from os.path import join, dirname
+
+from dotenv import load_dotenv
+
+# Load the environment
+envpath = join(dirname(__file__), '../.env')
+load_dotenv(envpath)
+
+
+VONAGE_SIGNATURE = os.getenv('VONAGE_SIGNATURE')
+
+from fastapi import FastAPI, Request
+from vonage_jwt.verify_jwt import verify_signature
+
+app = FastAPI()
+
+
+@app.get('/events')
+async def verify_signed_webhook(request: Request):
+    # Need to get the JWT after "Bearer " in the authorization header
+    auth_header = request.headers["authorization"].split()
+    token = auth_header[1].strip()
+
+    if verify_signature(token, VONAGE_SIGNATURE):
+        print('Valid signature')
+    else:
+        print('Invalid signature')