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| import os | |
| # | |
| from flask import Flask, request, Response | |
| import requests # pip package requests | |
| app = Flask(__name__) | |
| API_HOST = "http://127.0.0.1:8080/" | |
| # @app.route('/', defaults={'path': ''}, methods=["GET", "POST"]) # ref. https://medium.com/@zwork101/making-a-flask-proxy-server-online-in-10-lines-of-code-44b8721bca6 | |
| # NOTE: better to specify which methods to be accepted. Otherwise, only GET will be accepted. Ref: https://flask.palletsprojects.com/en/3.0.x/quickstart/#http-methods | |
| def redirect_to_API_HOST(path): #NOTE var :path will be unused as all path we need will be read from :request ie from flask import request | |
| forward = '' | |
| if path == 'netron': | |
| url = request.args.get('url') | |
| forward = f'{API_HOST}/?url={url}' | |
| else: | |
| forward = request.url.replace(request.host_url, f'{API_HOST}/') | |
| res = requests.request( # ref. https://stackoverflow.com/a/36601467/248616 | |
| method = request.method, | |
| url = forward, | |
| headers = {k:v for k,v in request.headers if k.lower() != 'host'}, # exclude 'host' header | |
| data = request.get_data(), | |
| cookies = request.cookies, | |
| allow_redirects = False, | |
| ) | |
| #region exlcude some keys in :res response | |
| excluded_headers = ['content-encoding', 'content-length', 'transfer-encoding', 'connection'] #NOTE we here exclude all "hop-by-hop headers" defined by RFC 2616 section 13.5.1 ref. https://www.rfc-editor.org/rfc/rfc2616#section-13.5.1 | |
| headers = [ | |
| (k,v) for k,v in res.raw.headers.items() | |
| if k.lower() not in excluded_headers | |
| ] | |
| #endregion exlcude some keys in :res response | |
| response = Response(res.content, res.status_code, headers) | |
| return response | |
| def chooser(): | |
| return """ | |
| <html> | |
| <head> | |
| <title>Netron</title> | |
| <script type="text/javascript"> | |
| function setFile() { | |
| console.log("Query params", window.location.search); | |
| if (!window.location.search) { | |
| return; | |
| } | |
| const urlParams = new URLSearchParams(window.location.search); | |
| const url = urlParams.get('url'); | |
| var iframe = document.getElementById('netron'); | |
| iframe.src = '/netron?url=' + url; | |
| } | |
| console.log("Top level URL", window.top.location); | |
| window.onload(setFile()); | |
| </script> | |
| </head> | |
| <body style="padding: 0; margin: 0; display: flex; flex-direction: row; align-items: center;"> | |
| <iframe id="netron" src="/netron?url=https://huggingface.co/brianronan/chessbot-test/resolve/main/chessbot.pb" style="width: 100%; height: calc(100% - 30px); border: none;"></iframe> | |
| </body> | |
| </html> | |
| """ |