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# support-questions
a

Alen

04/08/2022, 12:08 PM
Hi I'm using Supertokens for passwordless authentication. My backend is Node JS and Frontend is Angular. Im able to signup using the signinup and consume api call. But the issue is that I'm not able to create a session. Neither the cookie is getting stored in browser after the consume api call. when I checked the response header the set-cookie parameter is there. But its not storing the cookie. And When Im running the function getAccessTokenPayloadSecurely(), it throws the error session doesnt exist.
n

nkshah2

04/08/2022, 12:08 PM
Hi I'm using Supertokens for passwordless authentication. My backend is Node JS and Frontend is Angular. Im able to signup using the signinup and consume api call. But the issue is that I'm not able to create a session. Neither the cookie is getting stored in browser after the consume api call. when I checked the response header the set-cookie parameter is there. But its not storing the cookie. And When Im running the function getAccessTokenPayloadSecurely(), it throws the error session doesnt exist.
r

rp

04/08/2022, 12:09 PM
hey! What version of the node SDK are you using?
You can run it with debug logs and show us the logs
Copy code
DEBUG=com.supertokens node app.js
works for the latest version of the node sdk
a

Alen

04/08/2022, 12:10 PM
Hi Im using this version v14.18.0
r

rp

04/08/2022, 12:10 PM
no i mean the supertokens-node version
a

Alen

04/08/2022, 12:11 PM
"^9.1.2"
r

rp

04/08/2022, 12:11 PM
great. So please run it with the debug logs as shown above and show us the log output on startup + after you call the sign in API
a

Alen

04/08/2022, 12:18 PM
Just a small doubt, Do we have to write the api fetch func for signup/ consume etc in node as well. Because when I saw the doc, it meant that it will automatically fetch the api call.
n

nkshah2

04/08/2022, 12:19 PM
The SDK adds the APIs for you
a

Alen

04/08/2022, 12:19 PM
So only in frontend its required to be called right ?
n

nkshah2

04/08/2022, 12:19 PM
Correct
a

Alen

04/08/2022, 12:20 PM
Im so sorry to bother you, but this is my first time working with node js. Can you tell me where I have to put this for debugging?
DEBUG=com.supertokens node app.js
n

nkshah2

04/08/2022, 12:21 PM
We are happy to help, when you start your node server (using 
node index.js
for example) you use the 
DEBUG=com.supertokens
before that ( In the example I gave that would become 
DEBUG=com.supertokens node index.js
)
a

Alen

04/08/2022, 12:23 PM
The term 'com.supertokens' is not recognized is the error which Im getting
n

nkshah2

04/08/2022, 12:24 PM
Can you share the full command you are using?
a

Alen

04/08/2022, 12:25 PM
com.supertokens node index.js
n

nkshah2

04/08/2022, 12:25 PM
The command should be 
DEBUG=com.supertokens node index.js
a

Alen

04/08/2022, 12:25 PM
I tired this as well
n

nkshah2

04/08/2022, 12:26 PM
Same error?
a

Alen

04/08/2022, 12:26 PM
yeah DEBUG=com.supertokens : The term 'DEBUG=com.supertokens' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again. At line:1 char:1 + DEBUG=com.supertokens node index.js + ~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : ObjectNotFound: (DEBUG=com.supertokens:String) [], CommandNotFoundException + FullyQualifiedErrorId : CommandNotFoundException
r

rp

04/08/2022, 12:27 PM
Are you using windows?
a

Alen

04/08/2022, 12:28 PM
yeah
r

rp

04/08/2022, 12:28 PM
Copy code
SET DEBUG=com.supertokens
node index.js
run them as two separate commands
a

Alen

04/08/2022, 12:30 PM
yeah its working, now what I have to do ?
r

rp

04/08/2022, 12:31 PM
what is the output?
a

Alen

04/08/2022, 12:31 PM
Where can we see the output ?
r

rp

04/08/2022, 12:31 PM
on your terminal
a

Alen

04/08/2022, 12:31 PM
Only this much API Server listening on port 3000
r

rp

04/08/2022, 12:32 PM
hmm
a

Alen

04/08/2022, 12:32 PM
Do we have to do something to set the cookie or something ?
n

nkshah2

04/08/2022, 12:32 PM
Can you send the code snippet for calling SuperTokens.init on the frontend and backend? (Stripping any API keys if you have used any)
a

Alen

04/08/2022, 12:34 PM
Copy code
ngOnInit(): void {
    SuperTokens.init({
      apiDomain: 'http://localhost:3000',
      apiBasePath: '/auth',
    });
  }
Frontend
Backend : `supertokens.init({ framework: "express", supertokens: { // These are the connection details of the app you created on supertokens.com connectionURI: "", apiKey: "", }, appInfo: { // learn more about this on https://supertokens.com/docs/session/appinfo appName: "demo-app", apiDomain: "http://localhost:3000", websiteDomain: "http://localhost:4200", apiBasePath: "/auth", websiteBasePath: "/auth", }, recipeList: [ Passwordless.init({ flowType: "USER_INPUT_CODE_AND_MAGIC_LINK", contactMethod: "EMAIL", createAndSendCustomEmail: async (input) => { let htmlBody = getEmailBody( APP_NAME, Math.ceil(input.codeLifetime / 1000 / 60), input.urlWithLinkCode, input.userInputCode, input.email ); await mailTransporter.sendMail({ html: htmlBody, to: input.email, from: 
Team Supertokens <${process.env.NODEMAILER_USER}>
, sender: process.env.NODEMAILER_USER, subject: 
Login to ${APP_NAME}
, }); }, }), Session.init(), // initializes session features ], });`
n

nkshah2

04/08/2022, 12:36 PM
Are you using fetch for making requests on the frontend?
a

Alen

04/08/2022, 12:37 PM
Not fetch, Using http Sample req :
Copy code
login(email){
    let headers = new HttpHeaders()
      .set('rid', 'passwordless');
    let url = 'http://localhost:3000/auth/signinup/code';
    return this.http.post(url,email, {headers});
  }

  consume(data){
    let headers = new HttpHeaders()
      .set('rid', 'passwordless');
    let url = 'http://localhost:3000/auth/signinup/code/consume';
    return this.http.post(url,data, {headers});
  }
n

nkshah2

04/08/2022, 12:38 PM
So for session management to work we rely on interception which currently only supports 
fetch
or 
axios
a

Alen

04/08/2022, 12:39 PM
Ok got it, Do you have any example for using fetch or axios using supertokens?
n

nkshah2

04/08/2022, 12:42 PM
Our documentation has examples on how to enable interception using supertokens: https://supertokens.com/docs/passwordless/quick-setup/frontend For actually making the requests Google is your best friend :p
a

Alen

04/08/2022, 12:43 PM
Sure thanks for the help!
Hi , I was able to store the cookie using axios. Thanks for the help.
n

nkshah2

04/11/2022, 8:36 AM
Happy to help
a

Alen

04/11/2022, 8:38 AM
I wanted to know when we send the mail for passwordless authentication, So there is a button right on click of which it should directly login us instead of providing OTP. Do we have to write any api call for that part ?
I didnt find that in the doc , thats why I asked .
Because when Im clicking on the button its again taking me back to login page.
r

rp

04/11/2022, 8:39 AM
That shouldn't happen
What are the API calls being made when you click on the button, and what is the output of those APi calls?
n

nkshah2

04/11/2022, 8:40 AM
You are using an angular frontend correct? Can you explain what your flow is?
r

rp

04/11/2022, 8:41 AM
no i mean when you click on the button, the browser page is opened.. on that page, what are the APi calls being made and what is the output of them?
a

Alen

04/11/2022, 8:43 AM
Right now Im not calling any api. Thats why I asked , do we have to write any api call for that button login. Because for logging in through OTP I'm writing the calls.
n

nkshah2

04/11/2022, 8:44 AM
So the general idea is to call the 
createCode
endpoint to start the flow and generate the code/link depending on what you chose during SuperTokens.init. On the screen that is opened when the user clicks on the screen/ the screen where you want the user to enter the code you call the 
consumeCode
API
After calling the consume code API if the API does not throw any errors, the user is logged in
a

Alen

04/11/2022, 8:44 AM
These are the calls right for passworless one
r

rp

04/11/2022, 8:45 AM
you need to call the /code/consume API
using the fields from the magic link
a

Alen

04/11/2022, 8:45 AM
Yeah thats through OTP right, I want directly click on button instead of OTP.
For that which call has to be made ?
r

rp

04/11/2022, 8:45 AM
that same APi is for magic link as well
a

Alen

04/11/2022, 8:46 AM
then where can I get this linkcode ? "linkCode": "b10lbT_SnDC4flA6Fn7pE5TtG5k5NfigLef4QMBeGA8"
Copy code
{
  "preAuthSessionId": "kFmkPQEAJtACiT2w/K8fndEuNm+XozJXSZSlWEr+iGs=",
  "linkCode": "b10lbT_SnDC4flA6Fn7pE5TtG5k5NfigLef4QMBeGA8"
}
r

rp

04/11/2022, 8:46 AM
it will be in the URL of the magic link.
preAuthSessionId will be in the query param
linkCode will be in the URL after the "#" symbol
a

Alen

04/11/2022, 8:47 AM
Here this is the magic link right the bottom one. I can only see the preAuthSessionId in this.
Ok got it.
So I have to write this call where in frontend or backend ?
n

nkshah2

04/11/2022, 8:48 AM
Frontend
a

Alen

04/11/2022, 8:49 AM
But the mail body is being created in backend right ? That is where we have this login button.
n

nkshah2

04/11/2022, 8:51 AM
So im not sure what your flow is, in the mail you will have a button that will redirect the user to the magic link location right?
a

Alen

04/11/2022, 8:56 AM
Yeah
Its fine, I will figure that out. Thanks for the help!
r

rp

04/11/2022, 8:58 AM
The button will open the browser. So it will open a page on your frontend app.
n

nkshah2

04/11/2022, 8:58 AM
So if you are redirecting the user, the final URL will open in the browser. In which case you will need to read the information from the URL and call the API from the frontend
r

rp

04/11/2022, 8:58 AM
On that page, you need to call the API
a

Alen

04/11/2022, 10:02 AM
Ok Got it! Thanks.
Hi , Once I click on the magic link button it will open a new tab right and the user id will be shown in that page after logging in. I wanted to know is there any api call or function to automatically discover in the previous tab if login has been done in other tab.
r

rp

04/11/2022, 11:31 AM
In the previous tab, you can always check if await Session.doesSessionExist() at an interval
a

Alen

04/11/2022, 11:32 AM
Ok
For something like this we can do this Session.doesSessionExist() at an interval right ?
r

rp

04/11/2022, 11:33 AM
Yes
n

nkshah2

04/11/2022, 11:33 AM
Sure, that shouldnt cause any issues
a

Alen

04/11/2022, 11:33 AM
Or any other better way you would suggest ?
n

nkshah2

04/11/2022, 11:35 AM
Checking for doesSessionExist on an interval is fine
a

Alen

04/11/2022, 11:35 AM
Sure thanks!
Hi , just wanted to know , how long does the session exist for supertokens ?
r

rp

04/12/2022, 7:16 AM
a

Alen

04/12/2022, 7:17 AM
Thanks
Do you guys support Firebase ?
r

rp

04/12/2022, 7:55 AM
can you be more specific please?
a

Alen

04/12/2022, 8:01 AM
I want to try to self host it and store my data into google firebase.
n

nkshah2

04/12/2022, 8:03 AM
To clarify, you want to self host SuperTokens core and then store user information to firebase?
a

Alen

04/12/2022, 8:03 AM
Yeah
Is it supported ?
n

nkshah2

04/12/2022, 8:06 AM
We dont support it directly, but you could use the override feature in the backend SDKs to store the information to firestore (or realtime db) yourself. SuperTokens core would still use either MySQL or PostgreSQL though
a

Alen

04/12/2022, 8:08 AM
Ok got it.
Hi, I needed one help from you guys. Can you please tell me how to get these details { "preAuthSessionId": "kFmkPQEAJtACiT2w/K8fndEuNm+XozJXSZSlWEr+iGs=", "linkCode": "b10lbT_SnDC4flA6Fn7pE5TtG5k5NfigLef4QMBeGA8" }
When I saw the demo app of yours, it was saving in the local storage
r

rp

05/04/2022, 12:09 PM
yup
a

Alen

05/04/2022, 12:09 PM
Is there any way I can also store it
r

rp

05/04/2022, 12:09 PM
you can store it in localstrorage as well
these are returned from the API when you create a new code
a

Alen

05/04/2022, 12:10 PM
Ok got it. thanks
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