How to serve NodeJS form app using zeit now server - node.js

Question

I am running a simple nodejs form processing app on zeit now server and deploying using now CLI scripts.
This Node app although working well on the localhost within the said port number (like this: http://localhost:8081/myaction), however the same function is not workinig for me on the zeit server wherein I replace the localhost with the server URL given by NOW build script.
Here is my now.json and I am also providing access to the git repository which has the node server app thaat processes the form, sends an E-mail and serves a Thank You page in the last step.
Node Server App repo: https://github.com/jnsrikanth/node-form-server2
now.json file contents:
{
"version": 2,
"builds": [{ "src": "index.js", "use": "#now/node-server" }],
"routes": [
{
"src": "/public/thank-you/dist/",
"dest": "/index.html",
"methods": ["GET"]
},
{
"src": "/",
"dest": "/index.js",
"methods": ["POST"]
}
]
}
The package.json and the remaining code can be found in the repository. It would be great if I can find some pointers here.
Also please note that in my form I am calling action="https://zeit-url:8081/myaction" method="POST" where 8081 is the port on which the express app is listening for processing the POST method with form data.

Answer 1

In your now.json replace / with /myaction
...
{
"src": "/myaction",
"dest": "/index.js",
"methods": ["POST"]
}
...
And just call https://zeit-url/myaction (without port number)
I hope it will help you

Answer 2

I would suggest you to convert that now.json into a vercel.json and, based on the github repo you provided, update it so looks like:
"version": 2,
"builds": [
{
"src": "index.js",
"use": "#vercel/node"
}
],
"routes": [
{
"src": "/public/thank-you/dist/",
"dest": "/public/index.html",
"methods": ["GET"]
},
{
"src": "/",
"dest": "/index.js",
"methods": ["POST"]
}
]
You need to verify this server runs without problems on local machine.
Since you are using the builds vercel.json option, you need to ensure all the dependencies, as node_modules etc are uploaded to vercel, either by deploying file from the vercel-cli, or using some pipeline or CI action.