Sending opencv image along with additional data to Flask Server

I have actually solved the query by using the Python requests module instead of the http.client module and have done the following changes to my above code.

import requestsdef sendtoserver(frame):    imencoded = cv2.imencode(".jpg", frame)[1]    file = {'file': ('image.jpg', imencoded.tostring(), 'image/jpeg', {'Expires': '0'})}    data = {"id" : "2345AB"}    response = requests.post("http://127.0.0.1/my-script/", files=file, data=data, timeout=5)    return response

As I was trying to send a multipart/form-data and requests module has the ability to send both files and data in a single request.

You can try encoding your image in base64 string

import base64with open("image.jpg", "rb") as image_file:    encoded_string = base64.b64encode(image_file.read())

And send it as a normal string.

As others suggested base64 encoding might be a good solution, however if you can't or don't want to, you could add a custom header to the request, such as

headers = {"X-my-custom-header": "uniquevalue"}

Then on the flask side:

unique_value = request.headers.get('X-my-custom-header')

or

unique_value = request.headers['X-my-custom-header']

That way you avoid the overhead of processing your image data again (if that matters) and you can generate a unique id for each frame with something like the python uuid module.

Hope that helps