Http post returning nil

steve64

I'm using the Supabase REST API and the following code to logout:

client = net.Http(api_url)
client.headers['Content-Type'] = 'application/json'
client.headers['apikey'] =  api_key
client.headers['Authorization'] = 'Bearer '..access_token
task = client:post('auth/v1/logout')
local response, err = task:wait()
print(response, err)

I think this is functionally working and the logout is reported on Supabase server side.
My question is: the returned err value is nil and there is no apparent way to read the expected status code (204)
This specific API call is designed to not return any data + status = 204 in case of success.
How can I check if successful? Is checking for err = nil a good approach even if is Luart docs is usually considered as a failure?

Another point: the Http:delete() call requires a file argument, but in Supabase REST API there are DELETE calls without any body content. I solved this by passing a dummy temporary file but is not that elegant...,
Why not allowing the Luart Http:delete() API method to avoid to force a file argument?

Samir

steve64
For the Http:delete() method, you can use a string too for the Http request body content, so use an empty string instead of a dummy File.

For the Http:post() (as all other Http request methods) returns two values :

The Http instance used for the request
A response table or nil in case of network error, (there is no response available at all from the server)

In your case, if err is nil, you should check the net.error value

The second value is never nil

steve64

Regarding the delete() case:
I confirm that passing an empty string works fine (instead of passing a temp file).

Regarding the post for logout, using the following code:

client = net.Http(api_url)
client.headers['Content-Type'] = 'application/json'
client.headers['apikey'] =  api_key
client.headers['Authorization'] = 'Bearer '..access_token
task = client:post('auth/v1/logout')
local r, err = task:wait()
print(r, err)
print('net error:', net.error)

I got:

Http: 000001FCAEE4DDB0 nil
net error: The system cannot find the path specified.

But on server side it seems the request has been processed...

Samir

This error means the server has not been reached at all, so the request has not been processed.

Are you sure the server has processed it ? Have you access to a log ?

steve64

Yes, I have access to the server logs and I see the requests, with 204 status code as output

Samir

Did you forgot the backslash ? client:post('/auth/v1/logout')

Samir

Ok I've found the issue
.
The LuaRT Http:post() method expects a response content. But when response status is 204 (which mean, it's ok, but there is no content), it still wait for the response content, which is empty. This is causing returning a falsy error state when the Task has finished.

I have it fixed right now it should work (ie, it will return a response with status code 204).
It will be available in next LuaRT release thank you for the report !

steve64

thanks, any timeframe for next release?

Samir

Should be for the end of this week