fix: make upload-client.py work with HMAC correctl

.gitignore

@@ -1,2 +1,3 @@
 /target
 uploads/
+myenv

README.md

@@ -8,7 +8,13 @@ A simple, asynchronous file server to support XMTP Message History transfers. Ru
 
 Ensure you have the following installed:
 
-- Rust and Cargo. You can install them from [https://rustup.rs/](https://rustup.rs/)
+- Rust and Cargo. You can install them both from [https://rustup.rs](https://rustup.rs)
+- To run the example uploader, ensure python is installed on your system.
+
+Set the `SECRET_KEY` environment variable.
+
+    export SECRET_KEY=super-long-super-secret-unique-key-goes-here
+
 
 ### Installing
 
@@ -45,6 +51,22 @@ Example using curl:
 
     curl http://0.0.0.0:5558/files/{id} --output retrieved_file.aes
 
+### Example Client Uploader 
+
+Set up a virtual environment
+
+    python3 -m venv myenv
+    source myenv/bin/activate
+
+Install the dependencies
+
+    pip3 install -r requirements.txt
+
+Run the uploader script
+
+    python3 upload-client.py
+
+
 ## Contributing
 
 Contributions are welcome! Please feel free to submit a pull request or open an issue.

requirements.txt

@@ -0,0 +1 @@
+requests==2.31.0

upload-client.py

@@ -1,18 +1,31 @@
-
 import hmac
 import hashlib
 import requests
+import os
+
+file_path = "test_bundle.txt"
+
+secret_key = os.environ.get("SECRET_KEY", "").encode()
+
+# Ensure the secret key is not empty
+if not secret_key:
+    print("SECRET_KEY environment variable is not set.")
+    exit(1)
 
-# The shared secret key
-secret_key = b"your-secret-key"
+# The request payload consisting of a message history bundle
+with open(file_path, 'rb') as file:
+    file_content = file.read()
+    print(file_content)
 
-# The request payload
-payload = b"your request payload"
+    # Compute the HMAC
+    hmac_instance = hmac.new(secret_key, file_content, hashlib.sha256)
+    hmac_hex = hmac_instance.hexdigest()
+    print(hmac_hex)
 
-# Compute the HMAC
-hmac_instance = hmac.new(secret_key, payload, hashlib.sha256)
-hmac_hex = hmac_instance.hexdigest()
+    # Send the request with the HMAC header
+    headers = {'X-HMAC': hmac_hex}
+    response = requests.post('http://0.0.0.0:5558/upload', headers=headers, data=file_content)
 
-# Send the request with the HMAC header
-headers = {'X-HMAC': hmac_hex}
-response = requests.post('http://0.0.0.0:5558/upload', headers=headers, data=payload)
+# Log the response
+print(f"Response Status Code: {response.status_code}")
+print(f"Response Body: {response.text}")