Can I set the cookies to be used by a WKWebView

Question

I m trying to switch an existing app from UIWebView to WKWebView  The current app manages the users login   session outside of the webview and sets the cookies required for authentication into the the NSHTTPCookieStore  Unfortunately new WKWebView doesn t use the cookies from the NSHTTPCookieStorage  Is there another way to achieve this

User · Answer

This works for me  After setcookies   add fetchdatarecords     let cookiesSet   NetworkProvider getCookies forKey        PaywallProvider COOKIES KEY  completionHandler  nil                  let dispatchGroup   DispatchGroup                   for  cookie  in cookiesSet                       if  available iOS 11 0                               dispatchGroup enter                           self webView configuration websiteDataStore httpCookieStore setCookie cookie                               dispatchGroup leave                               print   cookie added    cookie description                                                            else                                                  TODO Handle ios 10 Fallback on earlier versions                                                                     dispatchGroup notify queue   main  execute          self webView configuration websiteDataStore fetchDataRecords ofTypes       WKWebsiteDataStore allWebsiteDataTypes      records in                             records forEach   record in                                  print   WebCacheCleaner  Record   record                                                              self webView load URLRequest url       self dataController premiumArticleURL        cachePolicy NSURLRequest CachePolicy reloadIgnoringLocalAndRemoteCacheData                                                           timeoutInterval  10 0

User · Answer

This mistake i was doing is i was passing the whole url in domain attribute  it should be only domain name   let cookie   HTTPCookie properties     domain   example com    path        name   MyCookieName    value   MyCookieValue    secure   TRUE         webView configuration websiteDataStore httpCookieStore setCookie cookie

User · Answer

If anyone is using Alamofire  then this is better solution     let cookies   Alamofire SessionManager default session configuration httpCookieStorage  cookies for  URL string  BASE URL      for  cookie  in cookies               webView configuration websiteDataStore httpCookieStore setCookie cookie

User · Answer

Here is how I am doing this- call initWebConfig in didFinishLaunchingWithOptions of AppDelegate  or anywhere before creating the WebView  otherwise sometimes Cookies do not sync properly-     func initWebConfig             self webConfig   WKWebViewConfiguration           self webConfig websiteDataStore   WKWebsiteDataStore nonPersistent                         func setCookie key  String  value  AnyObject  domain  String    nil  group  DispatchGroup    nil                                                     let cookieProps   HTTPCookiePropertyKey   Any                                   domain  domain     quot google com quot                                path   quot   quot                                name  key                               value  value                                                                             if let cookie   HTTPCookie properties  cookieProps                                group  enter                               let webConfig    UIApplication shared delegate as  AppDelegate   webConfig            webConfig  websiteDataStore httpCookieStore setCookie cookie                                    group  leave                                                                                  Where required  set cookies in dispatch group-  let group   DispatchGroup                   self setCookie key   quot uuid quot   value   quot tempUdid quot  as AnyObject  group  group                  self setCookie key   quot name quot   value   quot tempName quot  as AnyObject  group  group                                   group notify queue  DispatchQueue main                          Create and Load WebView here                      let webConfig    UIApplication shared delegate as  AppDelegate   webConfig    WKWebViewConfiguration                         create urlRequest                     let webView   WKWebView frame   zero  configuration  webConfig                      self webView load urlRequest

User · Answer

Here is my version of Mattrs solution in Swift for injecting all cookies from HTTPCookieStorage   This was done mainly to inject an authentication cookie to create a user session   public func setupWebView         let userContentController   WKUserContentController       if let cookies   HTTPCookieStorage shared cookies           let script   getJSCookiesString for  cookies          let cookieScript   WKUserScript source  script  injectionTime   atDocumentStart  forMainFrameOnly  false          userContentController addUserScript cookieScript            let webViewConfig   WKWebViewConfiguration       webViewConfig userContentController   userContentController      self webView   WKWebView frame  self webViewContainer bounds  configuration  webViewConfig        Generates script to create given cookies public func getJSCookiesString for cookies   HTTPCookie   - gt  String       var result          let dateFormatter   DateFormatter       dateFormatter timeZone   TimeZone abbreviation   UTC       dateFormatter dateFormat    EEE  d MMM yyyy HH mm ss zzz       for cookie in cookies           result     document cookie    cookie name    cookie value   domain   cookie domain   path   cookie path             if let date   cookie expiresDate               result     expires   dateFormatter stringFromDate date                        if  cookie secure                result     secure                      result                    return result

User · Answer

The better fix for XHR requests is shown here  Swift 4 version   func webView   webView  WKWebView  decidePolicyFor navigationResponse  WKNavigationResponse  decisionHandler   escaping  WKNavigationResponsePolicy  - gt  Swift Void        guard         let response   navigationResponse response as  HTTPURLResponse          let url   navigationResponse response url     else           decisionHandler  cancel          return            if let headerFields   response allHeaderFields as   String  String            let cookies   HTTPCookie cookies withResponseHeaderFields  headerFields  for  url          cookies forEach    cookie  in             HTTPCookieStorage shared setCookie cookie                       decisionHandler  allow

User · Answer

The reason behind posted this answer is I tried many solution but no one work properly  most of the answer not work in case where have to set cookie first time  and got result cookie not sync first time  Please use this solution it work for both iOS    11 0  lt   iOS 11 till 8 0  also work with cookie sync first time    For iOS    11 0 -- Swift 4 2   Get http cookies and set in wkwebview cookie store like this way  it s very tricky point to load your request in wkwebview  must sent request for loading when cookies gonna be set completely  here is function that i wrote   Call function with closure in completion you call load webview  FYI this function only handle iOS    11 0  self WwebView syncCookies       if let request   self request          self WwebView load request            Here is implementation for syncCookies function   func syncCookies completion  escaping   - gt Void     if  available iOS 11 0              if let yourCookie    HERE YOUR HTTP COOKIE OBJECT            self configuration websiteDataStore httpCookieStore setCookie yourCookie  completionHandler                  completion                         else       Falback just sent    completion         For iOS 8 till iOS 11  you need to setup some extra things you need to set two time cookies one through using WKUserScript and dont forget to add cookies in request as well  otherwise your cookie not sync first time and you will see you page not load first time properly  this is the heck that i found to support cookies for iOS 8 0  before you Wkwebview object creation   func setUpWebView          let userController  WKUserContentController   WKUserContentController init        if IOSVersion SYSTEM VERSION LESS THAN version   11 0             if let cookies   HTTPCookieStorage shared cookies               if let script   getJSCookiesString for  cookies                    cookieScript   WKUserScript source  script  injectionTime   atDocumentStart  forMainFrameOnly  false                  userController addUserScript cookieScript                                      let webConfiguration   WKWebViewConfiguration       webConfiguration processPool   BaseWebViewController processPool       webConfiguration userContentController   userController       let customFrame   CGRect init origin  CGPoint zero  size  CGSize init width  0 0  height  self webContainerView frame size height       self WwebView   WKWebView  frame  customFrame  configuration  webConfiguration      self WwebView translatesAutoresizingMaskIntoConstraints   false     self webContainerView addSubview self WwebView      self WwebView uiDelegate   self     self WwebView navigationDelegate   self     self WwebView allowsBackForwardNavigationGestures   true    A Boolean value indicating whether horizontal swipe gestures will trigger back-forward list navigations     self WwebView addObserver self  forKeyPath   keyPath WKWebView estimatedProgress   options   new  context  nil     self view addConstraint NSLayoutConstraint item  WwebView  attribute   trailing  relatedBy   equal  toItem  self webContainerView  attribute   trailing  multiplier  1  constant  0       self view addConstraint NSLayoutConstraint item  WwebView  attribute   leading  relatedBy   equal  toItem  self webContainerView  attribute   leading  multiplier  1  constant  0       self view addConstraint NSLayoutConstraint item  WwebView  attribute   top  relatedBy   equal  toItem  self webContainerView  attribute   top  multiplier  1  constant  0       self view addConstraint NSLayoutConstraint item  WwebView  attribute   bottom  relatedBy   equal  toItem  self webContainerView  attribute   bottom  multiplier  1  constant  0         Focus on this function getJSCookiesString   public func getJSCookiesString for cookies   HTTPCookie   - gt  String         var result          let dateFormatter   DateFormatter       dateFormatter timeZone   TimeZone abbreviation   UTC       dateFormatter dateFormat    EEE  d MMM yyyy HH mm ss zzz       for cookie in cookies           if cookie name     yout cookie name want to sync                result     document cookie    cookie name    cookie value   domain   cookie domain   path   cookie path                 if let date   cookie expiresDate                   result     expires   dateFormatter string from  date                                if  cookie isSecure                    result     secure                              result                                return result     Here is other step wkuserscript not sync cookies immediately  there a lot of heck to load first time page with cookie one is to reload webview again if it terminate process but i don t recommend to use it  its not good for user point of view  heck is whenever you ready to load request set cookies in request header as well like this way  don t forget to add iOS version check  before load request call this function   request  addCookies     i wrote extension for URLRequest   extension URLRequest    internal mutating func addCookies            appCode anAuY28ucmFrdXRlbi5yZXdhcmQuaW9zLXpOQlRTRmNiejNHSzR0S0xuMGFRb0NjbUg4Ql9JVWJH rpga kW69IPVSYZTo0JkZBicUnFxC1g5FtoHwdln59Z5RNXgJoMToSBW4xAMqtf0YDfto rewardadid D9F8CE68-CF18-4EE6-A076-CC951A4301F6 rewardheader true      var cookiesStr  String           if IOSVersion SYSTEM VERSION LESS THAN version   11 0             let mutableRequest     self as NSURLRequest  mutableCopy   as  NSMutableURLRequest           if let yourCookie    YOUR HTTP COOKIE OBJECT                   if have more than one cookies dont forget to add     at end             cookiesStr    yourCookie name         yourCookie value                    mutableRequest setValue cookiesStr  forHTTPHeaderField   Cookie               self   mutableRequest as URLRequest                           now you ready to go for testing iOS   8

User · Answer

My version of nteiss s answer  Tested on iOS 11  12  13  Looks like you don t have to use DispatchGroup on iOS 13 anymore    I use non-static function includeCustomCookies on WKWebViewConfiguration  so that I can update cookies every time I create new WKWebViewConfiguration   extension WKWebViewConfiguration       func includeCustomCookies cookies   HTTPCookie   completion   escaping     - gt  Void            let dataStore   WKWebsiteDataStore nonPersistent           let waitGroup   DispatchGroup            for cookie in cookies               waitGroup enter               dataStore httpCookieStore setCookie cookie    waitGroup leave                        waitGroup notify queue  DispatchQueue main                self websiteDataStore   dataStore             completion                       Then I use it like this    let customUserAgent  String    Mozilla 5 0  Macintosh  Intel Mac OS X 10 14 5  AppleWebKit 605 1 15  KHTML  like Gecko  Version 12 1 1 Safari 605 1 15   let customCookies   HTTPCookie          let cookie1   HTTPCookie properties             domain   yourdomain com            path                name   auth token            value  APIManager authToken              let cookie2   HTTPCookie properties             domain   yourdomain com            path                name   i18next            value   ru               return  cookie1  cookie2       override func viewDidLoad         super viewDidLoad        activityIndicatorView startAnimating        let webConfiguration   WKWebViewConfiguration       webConfiguration includeCustomCookies cookies  customCookies  completion     weak self  in         guard let strongSelf   self else   return           strongSelf webView   WKWebView frame  strongSelf view bounds  configuration  webConfiguration          strongSelf webView customUserAgent   strongSelf customUserAgent         strongSelf webView navigationDelegate   strongSelf         strongSelf webView autoresizingMask     flexibleWidth   flexibleHeight          strongSelf view addSubview strongSelf webView          strongSelf view bringSubviewToFront strongSelf activityIndicatorView          strongSelf webView load strongSelf request

User · Answer

After looking through various answers here and not having any success  I combed through the WebKit documentation and stumbled upon the requestHeaderFields static method on HTTPCookie  which converts an array of cookies into a format suitable for a header field  Combining this with mattr s insight of updating the URLRequest before loading it with the cookie headers got me through the finish line   Swift 4 1  4 2  5 0   var request   URLRequest url  URL string   https   example com      let headers   HTTPCookie requestHeaderFields with  cookies  for  name  value  in headers       request addValue value  forHTTPHeaderField  name     let webView   WKWebView frame  self view frame  webView load request    To make this even simpler  use an extension   extension WKWebView       func load   request  URLRequest  with cookies   HTTPCookie             var request   request         let headers   HTTPCookie requestHeaderFields with  cookies          for  name  value  in headers               request addValue value  forHTTPHeaderField  name                     load request            Now it just becomes   let request   URLRequest url  URL string   https   example com      let webView   WKWebView frame  self view frame  webView load request  with  cookies    This extension is also available in LionheartExtensions if you just want a drop-in solution  Cheers

User · Answer

Swift 3 update    func webView   webView  WKWebView  decidePolicyFor navigationResponse  WKNavigationResponse  decisionHandler   escaping  WKNavigationResponsePolicy  - gt  Void        if let urlResponse   navigationResponse response as  HTTPURLResponse         let url   urlResponse url         let allHeaderFields   urlResponse allHeaderFields as   String   String           let cookies   HTTPCookie cookies withResponseHeaderFields  allHeaderFields  for  url         HTTPCookieStorage shared setCookies cookies   for  urlResponse url   mainDocumentURL  nil         decisionHandler  allow

User · Answer

Solution for iOS 10  Details  Swift 5 1 Xcode 11 6  11E708   Solution import UIKit import WebKit extension WKWebViewConfiguration       func set cookies   HTTPCookie   completion      - gt  Void              if  available iOS 11 0                   let waitGroup   DispatchGroup               for cookie in cookies                   waitGroup enter                   websiteDataStore httpCookieStore setCookie cookie    waitGroup leave                               waitGroup notify queue  DispatchQueue main    completion                else               cookies forEach   HTTPCookieStorage shared setCookie  0                self createCookiesInjectionJS cookies  cookies                    let script   WKUserScript source   0  injectionTime   atDocumentStart  forMainFrameOnly  false                  self userContentController addUserScript script                  DispatchQueue main async   completion                                         private func createCookiesInjectionJS  cookies   HTTPCookie    completion    String  - gt  Void              var scripts   String      quot var cookieNames   document cookie split       map function cookie    return cookie split      0      quot           let now   Date            for cookie in cookies               if let expiresDate   cookie expiresDate  now compare expiresDate      orderedDescending   continue               scripts append  quot if  cookieNames indexOf    cookie name       -1    document cookie    cookie javaScriptString      quot                     completion  scripts joined separator   quot   n quot             extension WKWebView       func loadWithCookies request  URLRequest            if  available iOS 11 0                   load request            else               var  request   request              request setCookies               load  request                     extension URLRequest        private static var cookieHeaderKey  String    quot Cookie quot        private static var noAppliedcookieHeaderKey  String    quot No-Applied-Cookies quot         var hasCookies  Bool           let headerKeys    allHTTPHeaderFields         keys         var hasCookies   false         if headerKeys contains URLRequest cookieHeaderKey    hasCookies   true           if  hasCookies  amp  amp  headerKeys contains URLRequest noAppliedcookieHeaderKey    hasCookies   true           return hasCookies            mutating func setCookies             if  available iOS 11 0       return           var cookiesApplied   false         if let url   self url  let cookies   HTTPCookieStorage shared cookies for  url                let headers   HTTPCookie requestHeaderFields with  cookies              for  name  value  in headers   setValue value  forHTTPHeaderField  name                cookiesApplied   allHTTPHeaderFields  keys contains URLRequest cookieHeaderKey     false                   if  cookiesApplied   setValue  quot true quot   forHTTPHeaderField  URLRequest noAppliedcookieHeaderKey                 https   github com Kofktu WKCookieWebView blob master WKCookieWebView WKCookieWebView swift extension HTTPCookie        var javaScriptString  String           if var properties   properties               properties removeValue forKey   name              properties removeValue forKey   value               return properties reduce into    quot   name    value  quot      result  property in                 result append  quot   property key rawValue    property value  quot                 joined separator   quot    quot                      var script                  quot   name    value  quot                quot domain   domain  quot                quot path   path  quot                     if isSecure   script append  quot secure true quot              if let expiresDate   expiresDate               script append  quot expires   HTTPCookie dateFormatter string from  expiresDate   quot                      return script joined separator   quot    quot              private static let dateFormatter  DateFormatter             let dateFormatter   DateFormatter           dateFormatter locale   Locale identifier   quot en US quot           dateFormatter timeZone   TimeZone secondsFromGMT  0          dateFormatter dateFormat    quot EEE  dd MMM yyyy HH mm ss zzz quot          return dateFormatter            Usage  Do not forget to paste the Solution code here  class WebViewController  UIViewController           private let host    quot google com quot      private weak var webView  WKWebView       override func viewDidLoad             super viewDidLoad           setupWebView                  func setupWebView             let cookies   HTTPCookie               let configuration   WKWebViewConfiguration           configuration websiteDataStore    nonPersistent           configuration set cookies  cookies                let webView   WKWebView frame   zero  configuration  configuration                                 self webView   webView                          self loadPage url  URL string self host                             private func loadPage url  URL            var request   URLRequest url  url          request setCookies           webView load request           extension WebViewController  WKNavigationDelegate            https   stackoverflow com a 47529039 4488252      func webView   webView  WKWebView                    decidePolicyFor navigationAction  WKNavigationAction                    decisionHandler   escaping  WKNavigationActionPolicy  - gt  Void              if  available iOS 11 0                    decisionHandler  allow             else                guard let url   navigationAction request url  let host   url host  host contains self host  else                    decisionHandler  allow                   return                              if navigationAction request hasCookies                    decisionHandler  allow                 else                    DispatchQueue main async                        decisionHandler  cancel                       self loadPage url  url                                                          Full Sample  Do not forget to paste the Solution code here  import UIKit import WebKit  class ViewController  UIViewController        private weak var webView  WKWebView      let url   URL string   quot your url quot             var cookiesData   String   Any                            quot access token quot    quot your token quot                           override func viewDidLoad             super viewDidLoad           let configuration   WKWebViewConfiguration                    guard let host   self url host else   return           configuration set cookies  createCookies host  host  parameters  self cookiesData                 let webView   WKWebView frame   zero  configuration  configuration              self view addSubview webView              self webView   webView             webView navigationDelegate   self             webView translatesAutoresizingMaskIntoConstraints   false             webView topAnchor constraint equalTo  self view topAnchor  isActive   true             webView leftAnchor constraint equalTo  self view leftAnchor  isActive   true             self view bottomAnchor constraint equalTo  webView bottomAnchor  isActive   true             self view rightAnchor constraint equalTo  webView rightAnchor  isActive   true              self loadPage url  self url                       private func loadPage url  URL            var request   URLRequest url  url          request timeoutInterval   30         request setCookies           webView load request                 private func createCookies host  String  parameters   String  Any   - gt   HTTPCookie            parameters compactMap    name  value  in             HTTPCookie properties                     domain  host                   path   quot   quot                    name  name                   value   quot   value  quot                    secure   quot TRUE quot                    expires  Date timeIntervalSinceNow  31556952                                     extension ViewController  WKNavigationDelegate           https   stackoverflow com a 47529039 4488252     func webView   webView  WKWebView                   decidePolicyFor navigationAction  WKNavigationAction                   decisionHandler   escaping  WKNavigationActionPolicy  - gt  Void             if  available iOS 11 0                   decisionHandler  allow            else               guard let url   navigationAction request url  let host   url host  host contains self url host   else                   decisionHandler  allow                  return                            if navigationAction request hasCookies                   decisionHandler  allow                else                   DispatchQueue main async                       decisionHandler  cancel                      self loadPage url  url                                                     Info plist  add in your Info plist transport security setting   lt key gt NSAppTransportSecurity lt  key gt   lt dict gt       lt key gt NSAllowsArbitraryLoads lt  key gt       lt true  gt   lt  dict gt

User · Answer

You can also use WKWebsiteDataStore to get similar behaviour to HTTPCookieStorage from UIWebView   let dataStore   WKWebsiteDataStore default   let cookies   HTTPCookieStorage shared cookies     HTTPCookie    cookies forEach       dataStore httpCookieStore setCookie  0  completionHandler  nil

User · Answer

Please find the solution which most likely will work for you out of the box  Basically it s modified and updated for Swift 4  user3589213 s answer   func webView   webView  WKWebView  decidePolicyFor navigationAction  WKNavigationAction  decisionHandler   escaping  WKNavigationActionPolicy  - gt  Void        let headerKeys   navigationAction request allHTTPHeaderFields  keys     let hasCookies   headerKeys  contains  Cookie      false      if hasCookies           decisionHandler  allow        else           let cookies   HTTPCookie requestHeaderFields with  HTTPCookieStorage shared cookies                 var headers   navigationAction request allHTTPHeaderFields                headers    cookies          var req   navigationAction request         req allHTTPHeaderFields   headers          webView load req           decisionHandler  cancel

User · Answer

When adding multiply cookie items  you can do it like this   path  amp  domain is required for each item   NSString  cookie    NSString stringWithFormat   document cookie    p1    path   domain your domain   document cookie    p2    path   domain your domain   document cookie    p3    path   domain your domain      p1 string  p2 string  p3 string    WKUserScript  cookieScript     WKUserScript alloc              initWithSource cookie             injectionTime WKUserScriptInjectionTimeAtDocumentStart forMainFrameOnly NO     userContentController addUserScript cookieScript     otherwise  only the first cookie item will be set

User · Answer

In iOS 11  you can manage cookie now     see this session  https   developer apple com videos play wwdc2017 220

User · Answer

Edit for iOS 11  only  Use WKHTTPCookieStore   let cookie   HTTPCookie properties         domain   example com        path            name   MyCookieName        value   MyCookieValue        secure   TRUE        expires  NSDate timeIntervalSinceNow  31556926        webView configuration websiteDataStore httpCookieStore setCookie cookie    Since you are pulling them over from HTTPCookeStorage  you can do this   let cookies   HTTPCookieStorage shared cookies       for cookie in cookies       webView configuration websiteDataStore httpCookieStore setCookie cookie      Old answer for iOS 10 and below  If you require your cookies to be set on the initial load request  you can set them on NSMutableURLRequest   Because cookies are just a specially formatted request header this can be achieved like so   WKWebView   webView     set up your webView   NSMutableURLRequest   request    NSMutableURLRequest requestWithURL  NSURL URLWithString   http   example com index html      request addValue   TeskCookieKey1 TeskCookieValue1 TeskCookieKey2 TeskCookieValue2   forHTTPHeaderField   Cookie       use stringWithFormat  in the above line to inject your values programmatically  webView loadRequest request     If you require subsequent AJAX requests on the page to have their cookies set  this can be achieved by simply using WKUserScript to set the values programmatically via javascript at document start like so   WKUserContentController  userContentController   WKUserContentController new  WKUserScript   cookieScript     WKUserScript alloc       initWithSource    document cookie    TeskCookieKey1 TeskCookieValue1  document cookie    TeskCookieKey2 TeskCookieValue2        injectionTime WKUserScriptInjectionTimeAtDocumentStart forMainFrameOnly NO      again  use stringWithFormat  in the above line to inject your values programmatically  userContentController addUserScript cookieScript   WKWebViewConfiguration  webViewConfig   WKWebViewConfiguration new  webViewConfig userContentController   userContentController  WKWebView   webView     WKWebView alloc  initWithFrame CGRectMake   set your values    configuration webViewConfig     Combining these two techniques should give you enough tools to transfer cookie values from Native App Land to Web View Land   You can find more info on the cookie javascript API on Mozilla s page if you require some more advanced cookies    Yeah  it sucks that Apple is not supporting many of the niceties of UIWebView   Not sure if they will ever support them  but hopefully they will get on this soon   Hope this helps

User · Answer

set cookie   self webView evaluateJavaScript  document cookie  access token your token  domain  your domain        data  error  - gt  Void in         self webView reload       delete cookie  self webView evaluateJavaScript  document cookie  access token   domain  your domain        data  error  - gt  Void in         self webView reload

User · Answer

The cookies must be set on the configuration before the WKWebView is created  Otherwise  even with WKHTTPCookieStore s setCookie completion handler  the cookies won t reliably be synced to the web view  This goes back to this line from the docs on WKWebViewConfiguration    NSCopying var configuration  WKWebViewConfiguration   get      That  NSCopying is somewhat of a deep copy  The implementation is beyond me  but the end result is that unless you set cookies before initializing the webview  you can t count on the cookies being there  This can complicate app architecture because initializing a view becomes an asynchronous process  You ll end up with something like this  extension WKWebViewConfiguration           Async Factory method to acquire WKWebViewConfigurations packaged with system cookies     static func cookiesIncluded completion   escaping  WKWebViewConfiguration   - gt  Void            let config   WKWebViewConfiguration           guard let cookies   HTTPCookieStorage shared cookies else               completion config              return                      Use nonPersistent   or default   depending on if you want cookies persisted to disk            and shared between WKWebViews of the same app  default   or not persisted and not shared            across WKWebViews in the same app          let dataStore   WKWebsiteDataStore nonPersistent           let waitGroup   DispatchGroup           for cookie in cookies               waitGroup enter               dataStore httpCookieStore setCookie cookie    waitGroup leave                       waitGroup notify queue  DispatchQueue main                config websiteDataStore   dataStore             completion config                      and then to use it something like   override func loadView         view   UIView       WKWebViewConfiguration cookiesIncluded    weak self  config in         let webView   WKWebView frame   zero  configuration  webConfiguration          webView load request          self view   webView           The above example defers view creation until the last possible moment  another solution would be to create the config or webview well in advance and handle the asynchronous nature before creation of a view controller   A final note  once you create this webview  you have set it loose into the wild  you can t add more cookies without using methods described in this answer  You can however use the WKHTTPCookieStoreObserver api to at least observe changes happening to cookies  So if a session cookie gets updated in the webview  you can manually update the system s HTTPCookieStorage with this new cookie if desired   For more on this  skip to 18 00 at this 2017 WWDC Session Custom Web Content Loading  At the beginning of this session  there is a deceptive code sample which omits the fact that the webview should be created in the completion handler    cookieStore setCookie cookie         webView load loggedInURLRequest      The live demo at 18 00 clarifies this     Edit As of Mojave Beta 7 and iOS 12 Beta 7 at least  I m seeing much more consistent behavior with cookies  The setCookie     method even appears to allow setting cookies after the WKWebView has been created  I did find it important though  to not touch the processPool variable at all  The cookie setting functionality works best when no additional pools are created and when that property is left well alone  I think it s safe to say we were having issues due to some bugs in WebKit

User · Answer

This is my solution to handle with Cookies and WKWebView in iOS 9 or later   import WebKit  extension WebView        enum LayoutMode           case fillContainer            func autoLayout   view  UIView   mode  WebView LayoutMode    fillContainer            guard let view   view else   return           self translatesAutoresizingMaskIntoConstraints   false         view addSubview self           switch mode           case  fillContainer                  NSLayoutConstraint activate                   self topAnchor constraint equalTo  view topAnchor                   self leadingAnchor constraint equalTo  view leadingAnchor                   self trailingAnchor constraint equalTo  view trailingAnchor                   self bottomAnchor constraint equalTo  view bottomAnchor                                     class WebView   WKWebView        var request   URLRequest       func load url  URL  useSharedCookies  Bool   false            if useSharedCookies  let cookies   HTTPCookieStorage shared cookies for  url                self load url  url  withCookies  cookies            else               self load URLRequest url  url                        func load url  URL  withCookies cookies   HTTPCookie             self request   URLRequest url  url          let headers   HTTPCookie requestHeaderFields with  cookies          self request  allHTTPHeaderFields   headers         self load request

User · Answer

Below code is work well in my project Swift5  try load url by WKWebView below       private func loadURL urlString  String            let url   URL string  urlString          guard let urlToLoad   url else   fatalError  Cannot find any URL                 Cookies configuration         var urlRequest   URLRequest url  urlToLoad          if let cookies   HTTPCookieStorage shared cookies for  urlToLoad                let headers   HTTPCookie requestHeaderFields with  cookies              for header in headers   urlRequest addValue header value  forHTTPHeaderField  header key                       webview load urlRequest

User · Answer

work for me  func webView webView  WKWebView  decidePolicyForNavigationAction navigationAction  WKNavigationAction  decisionHandler   WKNavigationActionPolicy  - gt  Void        let headerFields   navigationAction request allHTTPHeaderFields     var headerIsPresent   contains headerFields  keys array as   String    Cookie        if headerIsPresent           decisionHandler WKNavigationActionPolicy Allow        else           let req   NSMutableURLRequest URL  navigationAction request URL           let cookies   yourCookieData         let values   NSHTTPCookie requestHeaderFieldsWithCookies cookies          req allHTTPHeaderFields   values         webView loadRequest req           decisionHandler WKNavigationActionPolicy Cancel

User · Answer

I have tried all of the answers above but none of them work  After so many attempts I ve finally found a reliable way to set WKWebview cookie   First you have to create an instance of WKProcessPool and set it to the WKWebViewConfiguration that is to be used to initialize the WkWebview itself       private lazy var mainWebView  WKWebView             let webConfiguration   WKWebViewConfiguration           webConfiguration processPool   WKProcessPool           let webView   WKWebView frame   zero  configuration  webConfiguration          webView navigationDelegate   self         return webView           Setting WKProcessPool is the most important step here  WKWebview makes use of process isolation - which means it runs on a different process than the process of your app  This can sometimes cause conflict and prevent your cookie from being synced properly with the WKWebview    Now let s look at the definition of WKProcessPool     The process pool associated with a web view is specified by its web view configuration  Each web view is given its own Web Content process until an implementation-defined process limit is reached  after that  web views with the same process pool end up sharing Web Content processes    Pay attention to the last sentence if you plan to use the same WKWebview for subsequence requests     web views with the same process pool end up sharing Web Content   processes   what I means is that if you don t use the same instance of WKProcessPool each time you configure a WKWebView for the same domain  maybe you have a VC A that contains a WKWebView and you want to create different instances of VC A in different places   there can be conflict setting cookies  To solve the problem  after the first creation of the WKProcessPool for a WKWebView that loads domain B  I save it in a singleton and use that same WKProcessPool every time I have to create a WKWebView that loads the same domain B  private lazy var mainWebView  WKWebView         let webConfiguration   WKWebViewConfiguration       if Enviroment shared processPool    nil           Enviroment shared processPool   WKProcessPool             webConfiguration processPool   Enviroment shared processPool      webConfiguration processPool   WKProcessPool       let webView   WKWebView frame   zero  configuration  webConfiguration      webView navigationDelegate   self     return webView       After the initialization process  you can load an URLRequest inside the completion block of httpCookieStore setCookie  Here  you have to attach the cookie to the request header otherwise it won t work    P s  I stole the extension from the fantastic answer above by Dan Loewenherz  mainWebView configuration websiteDataStore httpCookieStore setCookie your cookie            self mainWebView load your request  with   your cookie      extension WKWebView      func load   request  URLRequest  with cookies   HTTPCookie           var request   request       let headers   HTTPCookie requestHeaderFields with  cookies        for  name  value  in headers            request addValue value  forHTTPHeaderField  name                        load request

User · Answer

After playing with this answer  which was fantastically helpful    we ve had to make a few changes    We need web views to deal with multiple domains without leaking private cookie information between those domains We need it to honour secure cookies If the server changes a cookie value we want our app to know about it in NSHTTPCookieStorage If the server changes a cookie value we don t want our scripts to reset it back to its original value when you follow a link   AJAX etc    So we modified our code to be this   Creating a request  NSMutableURLRequest  request    originalRequest mutableCopy   NSString  validDomain   request URL host  const BOOL requestIsSecure    request URL scheme isEqualToString   https     NSMutableArray  array    NSMutableArray array   for  NSHTTPCookie  cookie in   NSHTTPCookieStorage sharedHTTPCookieStorage  cookies            Don t even bother with values containing a         if   cookie name rangeOfString       location    NSNotFound            NSLog   Skipping    because it contains a     cookie properties           continue                Is the cookie for current domain      if    cookie domain hasSuffix validDomain             NSLog   Skipping     because not       cookie properties  validDomain           continue                Are we secure only      if  cookie secure  amp  amp   requestIsSecure            NSLog   Skipping     because    not secure    cookie properties  request URL absoluteString           continue             NSString  value    NSString stringWithFormat           cookie name  cookie value        array addObject value      NSString  header    array componentsJoinedByString         request setValue header forHTTPHeaderField   Cookie        Now perform the request      This makes sure that the first request has the correct cookies set  without sending any cookies from the shared storage that are for other domains  and without sending any secure cookies into an insecure request   Dealing with further requests  We also need to make sure that other requests have the cookies set  This is done using a script that runs on document load which checks to see if there is a cookie set and if not  set it to the value in NSHTTPCookieStorage      Get the currently set cookie names in javascriptland  script appendString   var cookieNames   document cookie split       map function cookie    return cookie split      0       n     for  NSHTTPCookie  cookie in   NSHTTPCookieStorage sharedHTTPCookieStorage  cookies            Skip cookies that will break our script     if   cookie value rangeOfString       location    NSNotFound            continue                Create a line that appends this cookie to the web view s document s cookies      script appendFormat   if  cookieNames indexOf          -1    document cookie          n   cookie name  cookie wn javascriptString      WKUserContentController  userContentController     WKUserContentController alloc  init   WKUserScript  cookieInScript     WKUserScript alloc  initWithSource script                                                       injectionTime WKUserScriptInjectionTimeAtDocumentStart                                                    forMainFrameOnly NO    userContentController addUserScript cookieInScript             Create a config out of that userContentController and specify it when we create our web view  WKWebViewConfiguration  config     WKWebViewConfiguration alloc  init   config userContentController   userContentController   self webView     WKWebView alloc  initWithFrame webView bounds configuration config     Dealing with cookie changes  We also need to deal with the server changing a cookie s value  This means adding another script to call back out of the web view we are creating to update our NSHTTPCookieStorage   WKUserScript  cookieOutScript     WKUserScript alloc  initWithSource   window webkit messageHandlers updateCookies postMessage document cookie                                                           injectionTime WKUserScriptInjectionTimeAtDocumentStart                                                     forMainFrameOnly NO    userContentController addUserScript cookieOutScript     userContentController addScriptMessageHandler webView                                           name   updateCookies      and implementing the delegate method to update any cookies that have changed  making sure that we are only updating cookies from the current domain   -  void userContentController  WKUserContentController   userContentController didReceiveScriptMessage  WKScriptMessage   message       NSArray lt NSString   gt   cookies    message body componentsSeparatedByString             for  NSString  cookie in cookies               Get this cookie s name and value         NSArray lt NSString   gt   comps    cookie componentsSeparatedByString                if  comps count  lt  2                continue                        Get the cookie in shared storage with that name         NSHTTPCookie  localCookie   nil          for  NSHTTPCookie  c in   NSHTTPCookieStorage sharedHTTPCookieStorage  cookiesForURL self wk webView URL                 if   c name isEqualToString comps 0                      localCookie   c                  break                                      If there is a cookie with a stale value  update it now          if  localCookie                NSMutableDictionary  props    localCookie properties mutableCopy               props NSHTTPCookieValue    comps 1               NSHTTPCookie  updatedCookie    NSHTTPCookie cookieWithProperties props                 NSHTTPCookieStorage sharedHTTPCookieStorage  setCookie updatedCookie                       This seems to fix our cookie problems without us having to deal with each place we use WKWebView differently  We can now just use this code as a helper to create our web views and it transparently updates NSHTTPCookieStorage for us     EDIT  Turns out I used a private category on NSHTTPCookie - here s the code   -  NSString   wn javascriptString       NSString  string    NSString stringWithFormat         domain    path                              self name                          self value                          self domain                          self path                if  self secure            string    string stringByAppendingString    secure true               return string

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