I am trying to send an HTTP request using Vapor, to verify a recaptcha

Google's Captcha api is defined as follows:

URL: https://www.google.com/recaptcha/api/siteverify METHOD: POST

So I need to make a POST request with 2 parameters (secret and response).

In Swift i have:

func routes(_ app: Application throws {
    app.on(.POST, "website_form") { req -> EventLoopFuture<View> in
        var form: FromRequest = /*initial values*/
        /*decode form data*/
        
        do {
            req.client.post("https://www.google.com/recaptcha/api/siteverify") { auth_req in
                try auth_req.content.encode(CaptchaRequestBody(secret: "6Lfoo98dAAAAALRlUoTH9LhZukUHRPzO__2L0k3y", response: form.recaptcha_response), as: .formData)
                auth_req.headers = ["Content-Type": "application/x-www-form-urlencoded"]
            }.whenSuccess { resp_val in
                print("Response: \(resp_val)")
            }
        }
    } 
    /* More code */
}

struct CaptchaRequestBody: Content {
    let secret: String
    let response: String
}

After running the post request, I get following error code:

{
  "success": false,
  "error-codes": [
    "missing-input-secret"
  ]
}

I can not find any solution that works, even the official Vapor docs were of no use, could someone please help me?

CodePudding user response：

The Google API requires requests to be URL-encoded forms. By using the .formData setting, you are enforcing MultiPart.

Change the setting to .urlEncodedForm, which ensures the request conforms to the Google API requirement.

CodePudding user response：

As Nick stated: the problem was that instead of .formData, I needed to use .urlEncodedForm.