{"id":18780,"date":"2022-11-01T23:05:08","date_gmt":"2022-11-01T17:35:08","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-connect-a-flask-webservice-from-a-device-which-is-not-on-the-same-network\/"},"modified":"2022-11-01T23:05:08","modified_gmt":"2022-11-01T17:35:08","slug":"solved-connect-a-flask-webservice-from-a-device-which-is-not-on-the-same-network","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-connect-a-flask-webservice-from-a-device-which-is-not-on-the-same-network\/","title":{"rendered":"[Solved] Connect a Flask webservice from a device which is not on the same network"},"content":{"rendered":"

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Let A be the server you connecting to. Let B be the server you are connecting from, which, from what I gather, is sometimes localhost.<\/p>\n

Why can’t B connect to A?<\/h1>\n

1. Security Settings<\/h2>\n

The following is EC2-specific: You have to open up connections to specific IPs. Check your instance’s security settings. If you added a security group to your EC2 instance, add your IP or the IP of the server to it. Otherwise, make sure to whitelist the IP for B.<\/p>\n

2. Port<\/h2>\n

I’m not entirely sure this is what you want, but if everyone<\/em> should be able to access A, you should run the Flask app on port 8000<\/code>. If only<\/em> B (and possibly your localhost) should be able to access A, then ignore this paragraph…<\/p>\n

0.0.0.0 allows devices on the SAME network to connect<\/h1>\n

Automagically, yes. Incidentally, this is the IP you should be pointing to, for other servers to connect too. So in your case, point to 0.0.0.0<\/code> too.<\/p>\n

Is Apache necessary?<\/h1>\n

No, Apache is not<\/em> necessary. You can persist a Flask development server if you want. (a.k.a. You can use python run.py<\/code> and just leave that process running for a “web service”) In this case specifically, you don’t need Apache to make this work. In the long-term, you will want Apache or Nginx to run your webservice however.<\/p>\n

Here’s a tutorial you can use to get Apache2 setup with Python. Just ignore the MySQL parts: https:\/\/www.digitalocean.com\/community\/tutorials\/how-to-set-up-an-apache-mysql-and-python-lamp-server-without-frameworks-on-ubuntu-14-04<\/a><\/p>\n<\/p><\/div>\n

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2<\/span> <\/p><\/div>\n<\/div>\n

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solved Connect a Flask webservice from a device which is not on the same network <\/p>\n","protected":false},"excerpt":{"rendered":"

[ad_1] Let A be the server you connecting to. Let B be the server you are connecting from, which, from what I gather, is sometimes localhost. Why can’t B connect to A? 1. Security Settings The following is EC2-specific: You have to open up connections to specific IPs. Check your instance’s security settings. If you … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[1327,425,1679,349,1236],"class_list":["post-18780","post","type-post","status-publish","format-standard","hentry","category-solved","tag-amazon-web-services","tag-apache","tag-flask","tag-python","tag-web-services"],"yoast_head":"\n[Solved] Connect a Flask webservice from a device which is not on the same network - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-connect-a-flask-webservice-from-a-device-which-is-not-on-the-same-network\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Connect a Flask webservice from a device which is not on the same network - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Let A be the server you connecting to. Let B be the server you are connecting from, which, from what I gather, is sometimes localhost. Why can’t B connect to A? 1. Security Settings The following is EC2-specific: You have to open up connections to specific IPs. Check your instance’s security settings. If you ... 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