Couldn't encode Plus character in URL + swift

Question

i am using a GET method in which i have to pass a email address in the URL. API expects it to be encoded. I tried with the encoding options but the \'+\' character couldnt b

Answer 1

Unfortunately, both CharacterSet.urlHostAllowed and CharacterSet.urlQueryAllowed contains + as allowed. And for historical reason, most web servers treat + as a replacement of whitespace (), so you need to escape +.

For such purpose, you may need to define your own CharacterSet:

extension CharacterSet {
    static let rfc3986Unreserved = CharacterSet(charactersIn: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~")
}

let emailAddressText = "mano+1@gmail.com"

let encodedEmail = emailAddressText.addingPercentEncoding(withAllowedCharacters:.rfc3986Unreserved)

print(encodedEmail!) //->mano%2B1%40gmail.com