Alamofire invalid value around character 0

Question

Alamofire.request(.GET, \"url\").authenticate(user: \"\", password: \"\").responseJSON() {
    (request, response, json, error) in
    println(error)
    println(jso         


        

Answer 1

This is how I managed to resolve the Invalid 3840 Err.

The error log

 responseSerializationFailed(Alamofire.AFError.ResponseSerializationFailureReason.jsonSerializationFailed(Error Domain=NSCocoaErrorDomain Code=3840 "Invalid value around character 0." UserInfo={NSDebugDescription=Invalid value around character 0.}))

1. It was with Encoding Type used in the Request, The Encoding Type used should be acceptedin your Server-Side.

In-order to know the Encoding I had to run through all the Encoding Types:

default/ methodDependent/ queryString/ httpBody

    let headers: HTTPHeaders = [
        "Authorization": "Info XXX",
        "Accept": "application/json",
        "Content-Type" :"application/json"
    ]

    let parameters:Parameters = [
        "items": [
                "item1" : value,
                "item2": value,
                "item3" : value
        ]
    ]

    Alamofire.request("URL",method: .post, parameters: parameters,encoding:URLEncoding.queryString, headers: headers).responseJSON { response in
        debugPrint(response)
     }

2. It also depends upon the response we are recieving use the appropriate
   • responseString
   • responseJSON
   • responseData

If the response is not a JSON & just string in response use responseString

Example: in-case of login/ create token API :

"20dsoqs0287349y4ka85u6f24gmr6pah"

responseString