如何通知客户端reCaptcha成功

Question

Hello i have simple form where i have google reCaptcha v2 and when user submits form i am validating recaptcha but i also send email to user inputted email and i need to send status 200 two times here is first time where i need to send it

request(verifyURL, (err, res, body)=>{
        body = JSON.parse(body);
        if(body.success !== undefined && !body.success){
            return res.status(409).send({
                success: false,
                message: 'დადასტურება ვერ ვოხერხდა'
            })
        }
      return res.status(200).send({success: true})   
}) 

so if i send status code 200 and use return statement, won't it cause

Can't set headers after they are sent

error? if it will how can i fix it?

Thank you!

Answer 1

You cannot send multiple response for a single request. You can go with either: 1. Send the mail in the same controller, and when its done successfully, then only send the response back to client. Your response will be based on both factors ie. captcha validation and email sent response or 2. if you don't wanna wait for the email process.. Just send response once your captcha is verified.. and keep the mail process execution in background. In this case you need to remove the return keyword or else your request will end there and mail process won't execute.

However, I'll suggest you to go with the first approach. Hope this helps :)