server.py

from flask import Flask, jsonify, render_template, request, stream_with_context, Response
from flask_cors import CORS

import requests

app = Flask(__name__)
CORS(app)


@app.route("/")
def index():
    return render_template("index.html")


# this proxies any api request from flask to jupyter gateway running on localhost:10000
# ref https://gist.github.com/ShinJJang/5769c3d2202d5f478549395969bc67f4
@app.route('/api/<path>', methods=["GET", "POST"])
def proxy(path):
    url = f'http://localhost:10000/api/{path}'
    http_method = requests.post if request.method == 'POST' else requests.get
    if request.json:
        data = request.json
        print(f'{http_method.__name__} json: {data}')
        req = http_method(url, json=data)
    if request.form:
        data = request.form.to_dict()
        print(f'{http_method.__name__} form: {data}')
        req = http_method(url, data=data)
    return Response(stream_with_context(req.iter_content()), content_type=request.content_type)


if __name__ == "__main__":
    app.run(host="0.0.0.0", port=7860)