At an earlier point today, I was able to use this API and get a response in my iPhone app. The fact that I have been trying to debug this for so long is making be believe that I'm crazy! Attached is a screenshot of my console...
Here is my code pertaining to my API call. Using Apple's URLSession and following many stack overflow questions / Tutorials I can not get this thing to work.
let task = URLSession.shared.dataTask(with: request) { data, response, error in
guard let data = data else {
print("request failed \(error)")
return
}
do {
if let json = try JSONSerialization.jsonObject(with: data) as? [String: String], let result = json["result"] {
// Parse JSON
}
} catch let parseError {
print("parsing error: \(parseError)")
let responseString = String(data: data, encoding: .utf8)
print("raw response: \(responseString)")
}
}
task.resume()
Every time I get this interesting [BoringSSL] Error and the searching I've done regarding that has not produced effective in fixing whatever bug I have.
Like I said, earlier today I had this app working using the same API. I have tried the key that the website gave me and the test key they use on their site. Now that I think of it, I am going to use the exact URL from my code and the screenshot and take a screenshot from the response I get in my browser. See below:
Received above response with the exact URL being used in my app.
tried your API in my project. It worked. You can check the difference below:
let urlTest = URL(string: "https://www.zipcodeapi.com/rest/wvyR5aWjHNUF80Z6kmr1bTuNojfzhmvtcmfBD8QNo9qbNAHy9FvBISINKF3W5i9J/multi-distance.json/99501/99501,%2085001,%2072201/km")
var request = URLRequest(url: urlTest!)
request.httpMethod = "GET"
let session = URLSession(configuration: .default)
let task : URLSessionDataTask = session.dataTask(with: request) { (data, response, error) in
let statusCode = (response as! HTTPURLResponse).statusCode
if statusCode == 200{
do {
let json = try JSON(data:data!)
}
catch {
print("Could not convert JSON data into a dictionary.")
}
}
}
task.resume()
Printing description of json:
▿ {
"distances" : {
"85001" : 4093.922,
"72201" : 4962.6189999999997
}
}
May be you have to turn off Transport Layer Security, because that worked for me.
Go to your info.plist file and add a property named App Transport Secrity Settings and set its Allow Arbitrary loads option to NO
Hope this helps.
Related
Hai I am trying to pass some parameters of string in Http post request. I have created a dictionary and then converted that dictionary to data and set as httpBody.But when I looked on our server nothing has been passd I mean parameters are empty.Why? What mistake i am doing?Please help me to find out.Thanks in advance.
func receiptValidation(productId:String,requestFrom:String)
{
let SUBSCRIPTION_SECRET = "mySecretKey"
let defaults = UserDefaults.standard
let receiptPath = Bundle.main.appStoreReceiptURL?.path
if FileManager.default.fileExists(atPath: receiptPath!){
var receiptData:NSData?
do {
receiptData = try NSData(contentsOf: Bundle.main.appStoreReceiptURL!, options: NSData.ReadingOptions.alwaysMapped)
}
catch{
print("ERROR: " + error.localizedDescription)
}
//let receiptString = receiptData?.base64EncodedString(options: NSData.Base64EncodingOptions(rawValue: 0))
let base64encodedReceipt = receiptData?.base64EncodedString(options: NSData.Base64EncodingOptions.endLineWithCarriageReturn)
print(base64encodedReceipt!)
let requestDictionary = ["receipt-data":base64encodedReceipt!,"password":SUBSCRIPTION_SECRET]
guard JSONSerialization.isValidJSONObject(requestDictionary) else { print("requestDictionary is not valid JSON"); return }
do {
let requestData = try JSONSerialization.data(withJSONObject: requestDictionary)
let requestDataString=String(describing: requestData)
let URLForApplication:String = String(format:"%#/api/validate-receipt-data",opcodeDetails["apiProxyBaseUrl"]!) // this works but as noted above it's best to use your own trusted server
SwiftyBeaver.info("URLForApplication Path:\n\(URLForApplication)")
let url:URL! = URL.init(string: URLForApplication)
var request = URLRequest.init(url: url)
request.httpMethod = "POST"
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
let configure = URLSessionConfiguration.background(withIdentifier: Bundle.main.bundleIdentifier!)
session1=URLSession(configuration: .default, delegate: applicationDelegate.application, delegateQueue: OperationQueue.main)
var postString =
["receiptData":requestDataString,
"deviceType":"IOS",
"subscriberId":encodeString(normalString: defaults.array(forKey: "userDetails")?.first as! String),
"password":encodeString(normalString: defaults.array(forKey: "userDetails")?.last as! String),
"productId":encodeString(normalString: productId ),
"code":opcodeDetails["opCode"]!]
do {
request.httpBody = try JSONSerialization.data(withJSONObject: postString, options: .prettyPrinted) // pass dictionary to nsdata object and set it as request body
} catch let error {
print(error.localizedDescription)
}
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
let task = session1?.dataTask(with: request) { (data, response, error) in
if let data = data , error == nil {
do {
let appReceiptJSON = try JSONSerialization.jsonObject(with: data)
print("success. here is the json representation of the app receipt: \(appReceiptJSON)")
// if you are using your server this will be a json representation of whatever your server provided
} catch let error as NSError {
print("json serialization failed with error: \(error)")
}
} else {
print("the upload task returned an error: \(error)")
}
}
task?.resume()
} catch let error as NSError {
print("json serialization failed with error: \(error)")
}
}
}
and what error i am getting is Error Domain=NSCocoaErrorDomain Code=3840 "JSON text did not start with array or object and option to allow fragments not set." UserInfo={NSDebugDescription=JSON text did not start with array or object and option to allow fragments not set.}
You don’t say, but I’m assuming you’re getting this error where you print “json serialization failed with error”. If so, CZ54 is right, that your response is obviously not JSON. So, where you print that error, also print the header and body to see what the server actually returned, if anything:
print("response header:", response ?? "No response")
print("response body:", String(data: data, using: .utf8) ?? "No body")
The response header will include the status code (which should be something in the 200...299 range). If it’s not in that range, the status code will tell you the broad nature of the problem.
And regarding the response body, Sometimes (esp in development environments) if the server choked on something, it may return a HTML page outlining the nature of the problem (though, admittedly, in other cases, it only outputs the fact that there was an error, but not the details, and you’ll need to go into the server error logs to figure out what went wrong).
Looking at the specifics of the response, like above, is is your first step. Or you can achieve this by running the app on a simulator, and watching the request and the response in a tool like Charles or Wireshark. Once you get them up and running, these are great tools for inspecting requests and responses.
The next question is why the server generated the response that it did. As a general rule, while these sorts of problems can be a result of some server mistake, the more likely scenario is that the request wasn’t formed correctly and the server didn’t know how to handle it. Looking at the response (or looking at your server’s error logs) often provides good clues. But there’s no way anyone can help you on the basis of the information provided.
U P D A T E D... The function with what works!
I would like to incorporate the yelp api into an app but can't successfully pass my authorization token on the URL string. Do I need to do something to connect the URLRequest to the URLSessoin call and its not using the header? Maybe the key value pairs is wrong? The below function returns:
error = {
code = "TOKEN_MISSING";
description = "An access token must be supplied in order to use this endpoint.";
};
I was able to use postman to get the yelp API call working, but only by clicking the "Header" section on postman and putting in Bearer and then my yelp key. I googled around a bit and found some links that indicate that you can add a header to the URLSession that I assume would work the way postman does but I haven't been able to get it to work.
I know there are some githubs with yelp API repos but I am trying to not install a large set of code that I don't understand into my app, when all I want is the JSON that I can see is coming through on postman. Can anyone help me understand how I would edit code similar to the Here example below so that I can get the Authorization/Bearer that yelp requires?
func getYelp() {
let appSecret = "Bearer <YELP APIKEY>"
let link = "https://api.yelp.com/v3/businesses/search?latitude=37.786882&longitude=-122.399972"
if let url = URL(string: link) {
// Set headers
var request = URLRequest(url: url)
request.setValue("Accept-Language", forHTTPHeaderField: "en-us")
request.setValue(appSecret, forHTTPHeaderField: "Authorization")
print("Attempting to get places around location from Yelp")
let task = URLSession.shared.dataTask(with: request) { (data, response, error) in
if error != nil {
print(error!)
} else {
if let urlContent = data {
do {
let jsonResult = try JSONSerialization.jsonObject(with: urlContent, options: JSONSerialization.ReadingOptions.mutableContainers) as AnyObject // Added "as anyObject" to fix syntax error in Xcode 8 Beta 6
print("Printing all JSON/n/n//n--------------------------")
print(jsonResult)
print("Printing from results/n/n//n--------------------------")
if let description = ((jsonResult["search"] as? NSDictionary)?["context"] as? NSDictionary)?["href"] as? String {
} else {
print("JSON pull failed/n/n//n--------------------------")
}
} catch {
print("JSON Processing Failed/n/n//n--------------------------")
}
}
}
}
task.resume()
} else {
resultLabel.text = "Couldn't get results from Here"
}
}
You're mixing up between the headers and the url, you need to set your headers correctly
if let url = URL(string: "https://places.cit.api.here.com/places/v1/discover/around?at=37.776169%2C-122.421267&app_id=\(app_id)&app_code=\(app_code)") {
var request = URLRequest(url: url)
// Set headers
request.setValue("Accept-Language", forHTTPHeaderField: "en-us")
request.setValue("Authorization", forHTTPHeaderField: "Bearer " + token // Token here)
print("Attempting to get places around location")
let task = URLSession.shared.dataTask(with: url) { (data, response, error) in
// ...
Lets say you have an api with "https://google.com" (this is just an example with fake keys)
and an api key that is "ApiKey: 92927839238293d92d98d98d92".
You would then take this information and do this.
let uri = URL(string:"https://google.com")
if let unwrappedURL = uri {
var request = URLRequest(url: unwrappedURL)request.addValue("92927839238293d92d98d98d92", forHTTPHeaderField: "ApiKey")
let dataTask = URLSession.shared.dataTask(with: request) { (data, response, error) in
// you should put in error handling code, too
if let data = data {
do {
let json = try JSONSerialization.jsonObject(with: data, options: [])
// HERE'S WHERE YOUR DATA IS
print(json)
} catch {
print(error.localizedDescription)
}
}
}
dataTask.resume()
}
Please remember that you would replace the google.com with your GET address and the APIKey header with your own api key values.
Also, this will print out all the JSON like in PostMan.
If this works for you, then I also have a link on accessing the JSON Objects.
I'm trying to integrate a login API in my iOS project. When i hit that API in browser it gives me correct JSON response. Whereas, when i call it in my app, i'm unable to read JSON. Code is as:
let url = NSURL(string: "myURL")
let request = NSURLRequest(URL: url!)
let session = NSURLSession.sharedSession()
let task = session.dataTaskWithRequest(request) { (data, response, error) -> Void in
if error != nil {
print (error)
}
do {
//jsonDict is always nil
if let jsonDict = try self.jsonFromData(data!) {
print (jsonDict)
}
}
catch {
print ("hi")
}
}
jsonFromData is as:
private func jsonFromData(jsonData: NSData) throws -> [NSDictionary]?
{
var jsonDict: [NSDictionary]? = nil
do
{
jsonDict = try NSJSONSerialization.JSONObjectWithData(jsonData, options: NSJSONReadingOptions.AllowFragments) as? [NSDictionary]
}
catch
{
throw(error)
}
return jsonDict
}
Response of API, when hit in browser is as:
Please help me, what i am doing wrong. Thanks.
UPDATE:
I just checked that if i convert data to String, it gives correct value. i.e.
let string = NSString(data: jsonData, encoding: NSASCIIStringEncoding)
print (string)
//OUTPUT: Optional({"Authenticated":true,"CustomerID":000,"CustomerName":"TEMP","Members":[{"MemberID":000,"MemberNumber":"000","MembershipID":00,"MembershipExpiration":"\/Date(1517464799000-0600)\/","ValidBuyerTypes":[0]}]})
Look at your code where you decode the JSON and the as? statement. You are trying to get an array of NSDictionary. Your JSON as printed contains a single dictionary, not an array.
This looks right to me. The only thing I can think is that (despite what the string output looks like) the top level container of your response is NOT an NSDictionary. In your jsonFromData function, instead of assuming the result of JSONObjecWithData will be an NSDictionary, I would say:
let iDunnoWhatThisIs = try NSJSONSerialization.JSONObjectWithData(jsonData, options: NSJSONReadingOptions.AllowFragments) // don't cast this to NSDictionary
and see what you get back. It should either be a dictionary or an array, however, since you have NSJSONReadingOptions.AllowFragments set for the options, it's possible that it could be something else entirely. Start with making SURE you're actually getting back what you're assuming you are and go from there.
Try using NSKeyedUnarchiver instead:
jsonDict = NSKeyedUnarchiver.unarchiveObjectWithData(jsonData)! as NSDictionary
first of all i would like to say i got the exact same problem as the following question: How to add data to HTTPBody with PUT method in NSURLSession?. But it wasn't answered so i made my own question.
We have written a node API for a school assignment. We've tested the whole API. (The chances of being something wrong there are slim.)
After that i went working on a iOS client to CRUD users.
Making a user is going perfectly, but whenever i try to edit a user something strange happens. The data on the server arrives as undefined.
I use the following code to save a user:
func saveUser(user: User, completionHandler: (String?, User?) -> Void) {
let url = NSURL(string: "https://pokeapi9001.herokuapp.com/api/users/")
let request = NSMutableURLRequest(URL:url!)
request.HTTPMethod = "POST"
let postString = "email=\(user.email)&password=\(user.password!)&role=\(user.role)"
request.HTTPBody = postString.dataUsingEncoding(NSUTF8StringEncoding)
request.cachePolicy = NSURLRequestCachePolicy.ReloadIgnoringCacheData
let task = NSURLSession.sharedSession().dataTaskWithRequest(request) {
data, response, error in
if error != nil {
print("error: \(error)")
}
do {
guard let data = data else {
throw JSONError.NoData
}
guard let json = try NSJSONSerialization.JSONObjectWithData(data, options: []) as? NSDictionary else {
throw JSONError.ConversionFailed
}
//do specific things
} catch let error as JSONError {
completionHandler(error.rawValue, nil)
} catch let error as NSError {
completionHandler(error.debugDescription, nil)
}
}
task.resume()
}
keep in mind, this is working perfectly (don't know if it is intended to be used like this)
To edit a user i use the following code:
func editUser(user: User, completionHandler: (String?, User?) -> Void) {
let url = NSURL(string: "https://pokeapi9001.herokuapp.com/api/users/\(user.id!)")
let request = NSMutableURLRequest(URL:url!)
request.HTTPMethod = "PUT"
let postString = "email=\(user.email)&password=\(user.password!)&role=\(user.role)"
request.HTTPBody = postString.dataUsingEncoding(NSUTF8StringEncoding)
request.cachePolicy = NSURLRequestCachePolicy.ReloadIgnoringCacheData
let task = NSURLSession.sharedSession().dataTaskWithRequest(request) {
data, response, error in
if error != nil {
print("error: \(error)")
}
do {
guard let data = data else {
throw JSONError.NoData
}
guard let json = try NSJSONSerialization.JSONObjectWithData(data, options: []) as? NSDictionary else {
throw JSONError.ConversionFailed
}
//do specific things
} catch let error as JSONError {
completionHandler(error.rawValue, nil)
} catch let error as NSError {
completionHandler(error.debugDescription, nil)
}
}
task.resume()
}
(The original code is a bit longer but i removed parts that had nothing to do with the actual posting of the data)
I have really no idea what i'm doing wrong, could be something small and stupid. Please help.
edit after input from #fiks
To be clear, the problem i am having is that I fill the "postString" the same way in the editUser method as I do in the saveUser method.(At least I think I do)
However in the saveUser method the postString seems to be correctly passed through to the API (it creates a new user with the given values).
The editUser method does not pass the values through.
If I put a console log on the server it shows all values are "undefined".
To test if the postString was correct on the iOS part I printed both strings out. Both of them outputted email=user#test.com&password=test&role=admin
From what I see in the postman request, you are sending a x-www-form-urlencoded request.
You have to specify it in the code. See example: POST request using application/x-www-form-urlencoded
Regarding Charles: since you are using https, you have to enable proxy for the host. More info here: https://www.charlesproxy.com/documentation/proxying/ssl-proxying/
i have a Swift code for retrieving and parsing JSON data from the web. everything seems to work fine except one problem i am facing right now. I tried to solve it for some time, have check all sources online.
I have created global dictionary "dicOfNeighbours" that would like to return as a result of parse to other class by calling "func startConnection".
dicOfNeighbours stores parsed data till it goes out of the closing bracket of the:
"let task = session.dataTaskWithRequest(urlRequest) { ... }"
After it stores just nil. And returned result is nil as well.
I have tried to pass "dicOfNeighbours" variable by reference using inout and it is still returns nil result.
there might some solution that i missed.
I would appreciate any help and suggestions.
Thanks!
var dicOfNeighbours = Dictionary<String, [Int]>()
func startConnection() -> Dictionary<String, [Int]>{
let requestURL: NSURL = NSURL(string: "http://www....data.json")!
let urlRequest: NSMutableURLRequest = NSMutableURLRequest(URL: requestURL)
let session = NSURLSession.sharedSession()
let task = session.dataTaskWithRequest(urlRequest) {
(data, response, error) -> Void in
let httpResponse = response as! NSHTTPURLResponse
let statusCode = httpResponse.statusCode
if (statusCode == 200) {
do{
let json = try NSJSONSerialization.JSONObjectWithData(data!, options:.AllowFragments)
if let neighbours = json["neighbours"] as? [String: Array<Int>] {
var i = 0
for (index, value) in neighbours {
self.dicOfNeighbours[index] = value
}
}
}catch {
print("Error with Json: \(error)")
}
}
}
task.resume()
return self.dicOfNeighbours
}
You are using return instead of using a callback. You are doing your parsing when the network connection is done; asynchronously.
To synchronize it, you'd need to use semaphores, but that is highly discouraged on the main thread.
Instead, do the appropriate things with the result when your completion block is executed. Think of the data task as 'do stuff, come back to me when you're done'.