404 returned when registering with another node

[hanglearning]

First of all thanks satwikkansal for an awesome blockchain python tutorial!

When I tried to register a new node with an existing node by using these commands

$ flask run --port 8001

(in  a new terminal tab)$  curl -X POST \
  http://127.0.0.1:8001/register_with \
  -H 'Content-Type: application/json' \
  -d '{"node_address": "http://127.0.0.1:8000"}'

I got this returned back -

<title>404 Not Found</title>
<h1>Not Found</h1>
<p>The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again.</p>

I checked the tab with port 8001, and I found port 8001 does receive this request, but also it shows a 404 error:
127.0.0.1 - - [31/Mar/2020 23:14:21] "POST /register_with HTTP/1.1" 404 -

Could anyone help me overcome this issue? Thanks!

[satwikkansal]

It seems like your port 8000 is running the application and not the node_server

[hanglearning]

Hi satwikkansal, thanks a lot for your reply!

No, I did run node_server on port 8000. I run the application on port 5000 by the default config. I didn't change any code and followed your tutorial blog. I just did these to reproduce the issue:

In my first tab, I run node_server on port 8000

Then in my second tab, I run the app

In my third tab, I run another node_server on port 8001

In my fourth tab, I tried to register 8001 with 8000 and got 404

Come back to the third tab, there's an extra line showing 404 error as well

The first and second tabs didn't prompt any extra information.

Please let me know where I could do it wrong. I really appreciate your help! 😊

[satwikkansal]

You thrid tab is not serving node_server, compare the logs with the second tab.

You need to export the FLASK_APP environment variable in the third tab as well.

[hanglearning]

Oh correct! Thank you! Turns out it's my false assumption about how flask app runs! Sorry to bother you for this naive question.

Thanks again😁