Error Domain=NSCocoaErrorDomain Code=3840 "Invalid value around character 0
16,701
The Error saying that the response from server is not a valid JSON string. Can you try responseString instead of responseJSON like
Alamofire.request(urlAddress, method: requestMethod, parameters: params).responseString{ response in
debugPrint(response)
}
See the Xcode debugger output & change it according to your need.
Author by
Egle Matutyte
Updated on June 04, 2022Comments
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Egle Matutyte almost 2 years
Hi I am new at swift and I got problem, I made a request to server with post method and I get response with good Json, after that I am makeing another request with get method but I get this error.
Error: responseSerializationFailed(Alamofire.AFError.ResponseSerializationFailureReason.jsonSerializationFailed(Error Domain=NSCocoaErrorDomain Code=3840 "Invalid value around character 0." UserInfo={NSDebugDescription=Invalid value around character 0.})
Parameters for request:
static func getInformationFromConfig(token: String, config: String, section : String, option: String) -> [String:Any] { let getInformationFromConfigparam: [String : Any] = ["jsonrpc": "2.0", "id": 1, "method": "call", "params": [ token, "uci", "get", [ "config": config, "section": section, "option": option]] ] return getInformationFromConfigparam } public func device(token: String, loginCompletion: @escaping (Any) -> ()) { let deviceinfo = JsonRequests.getInformationFromConfig(token: token, config: "wireless", section: "@wifi-iface[0]", option: "mode") makeWebServiceCall(urlAddress: URL, requestMethod: .get, params: deviceinfo, completion: { (JSON : Any) in loginCompletion(JSON) }) }
Request:
private func makeWebServiceCall (urlAddress: String, requestMethod: HTTPMethod, params:[String:Any], completion: @escaping (_ JSON : Any) -> ()) { Alamofire.request(urlAddress, method: requestMethod, parameters: params, encoding: JSONEncoding.default).responseJSON{ response in switch response.result { case .success(let value): let json = JSON(value) if let jsonData = response.result.value { completion(jsonData) } case .failure(let error): completion("Failure Response: \(error)")
ResponseString response:
[Request]: GET http://192.168.1.1/ubus [Response]: <NSHTTPURLResponse: 0x60000003c4a0> { URL: http://192.168.1.1/ubus } { status code: 400, headers { Connection = "Keep-Alive"; "Content-Type" = "text/html"; "Keep-Alive" = "timeout=20"; "Transfer-Encoding" = Identity; } } [Data]: 35 bytes [Result]: FAILURE: responseSerializationFailed(Alamofire.AFError.ResponseSerializationFailureReason.jsonSerializationFailed(Error Domain=NSCocoaErrorDomain Code=3840 "Invalid value around character 0." UserInfo={NSDebugDescription=Invalid value around character 0.}))