Incorrect JSON Format with JSONEncoder

Could you show how you defined account (its content) ?

And print a log and report what you get:

guard let encoded = try? JSONEncoder().encode(account) else {
        print("Failed to encode request")
        return
      }

request.httpBody = encoded
print("encoded", encoded)

Hi,

Thank you for your response. Here is the whole function:

func createAccount(account: AccountCreationData, completion: @escaping (Response) -> Void) {
        guard let url = URL(string: "http://localhost:4300/account/create-account") else { return }
        var request = URLRequest(url: url)
        request.httpMethod = "POST"
    
        print(account)
        
        guard let encoded = try? JSONEncoder().encode(account) else {
            print("Failed to encode request")
            return
        }
        
        print(encoded)
        
        request.httpBody = encoded
        
        URLSession.shared.dataTask(with: request) { (data, response, error) in
            guard let data = data else { return }
            
            do {
                let resData = try JSONDecoder().decode(Response.self, from: data)
                DispatchQueue.main.async {
                    completion(resData)
                }
            } catch let jsonError as NSError {
                print("JSON decode failed: \(jsonError)")
            }
        }.resume()
    }

Below are print statements of account and encoded:

AccountCreationData(name: "name", email: "email", phone: "phone", password: "password")
110 bytes

Can you show us what Response is? That's what you're decoding the JSON into.

Also, can you change this to something else? I don't like the re-use of the data variable, and it might be an issue later:

guard let data = data else { return }

// Maybe:
guard let jsonData = data else { return }

If not, it's good to clear it up anyway :)

AccountCreationData(name: "name", email: "email", phone: "phone", password: "password")
110 bytes

Something is off. Testing here, if I encode your struct with those exact values, the result is 69 bytes, not 110 bytes. Can you print out a string representation of the encoded JSON?

And separately, do you need to set a Content-Type: application/json header so your server knows that the body format is JSON?

print(encoded) returns 110 bytes.

When I test it with the following code,

let account = AccountCreationData(name: "name", email: "email", phone: "phone", password: "password")
if let encoded = try? JSONEncoder().encode(account) {
    print("encoded", encoded)
    print("content", String(data: encoded, encoding: .utf8)!) // To see the content of encoding
} else {
    print("Failed to encode request")
}

I get

encoded 69 bytes // (the string 'name: "name", email: "email", phone: "phone", password: "password"' is 66 bytes)
content {"email":"email","password":"password","name":"name","phone":"phone"}

Could you print the same log on your side ?

And please show how you call createAccount. You may have a problem there.

Also, why do you dispatch here:

                DispatchQueue.main.async {
                    completion(resData)
                }
            } catch let jsonError as NSError {

Hi,

Thank you for all the help. There was a discrepancy in the bytes because I removed a field from the data set. I was missing the Content-Type: application/json header which caused the issue.