}=\frac{3}{3-\cos1-i\sin1}.
$$
The desired limit is the real part, that is
$$
\frac{3(3-\cos1)}{(3-\cos1)^2+\sin^21}.
$$

 Q:

CORS preflight request returning HTTP 401 with windows authentication

I searched a lot on Google and Stack overflow to find a solution for my problem, but nothing worked.
Here is my problem:

I use IIS 7 with a special programming environment called WebDEV that does not allow direct manipulation of OPTIONS HTTP method. So, all solutions suggesting some kind of server-side request handling using code are not feasible. 
I have to use Window authentication and disable anonymous access
I have a page that uses CORS to POST to this server. As this POST should have Content-type: Octet-stream, a preflight is issued by the browser.
When I enable anonymous access, everything works fine (CORS is well configured)
When I disable anonymous access, the server replies with HTTP 401 unauthorized response to the preflight request, as it does not contain credentials information.
I tried to write a module for IIS that accepts OPTIONS requests like this, but it did not work (couldn't add the module correctly to IIS, maybe)
public class CORSModule : IHttpModule
   {

          public void Dispose() { 
          }

          public void Init(HttpApplication context)
          {
               context.PreSendRequestHeaders += delegate
               {
                  if (context.Request.HttpMethod == "OPTIONS")
                   {
                         var response = context.Response;
                         response.StatusCode = (int)HttpStatusCode.OK;
                   }
               };
          }
    } 

The question is: How can I make IIS respond with HTTP 200 to the preflight request without enabling anonymous access or writing some server-side code? Is there an easy configuration or a ready-made module for IIS to do so? At least, what are the detailed steps to install the above module into IIS 7?

A:

Here is the solution that uses "URL Rewrite" IIS module. It works perfectly.
1- Stop IIS service (maybe not necessary)
2- Install "web platform installer" from https://www.microsoft.com/web/downloads/platform.aspx
3- Go
} = \frac{3}{3-\cos1 - i\sin1 }. 
 $ $ 
 The desired limit is the real part, that is 
 $ $ 
 \frac{3(3-\cos1)}{(3-\cos1)^2+\sin^21 }. 
 $ $ 

  Q: 

 CORS preflight request revert HTTP 401 with window authentication 

 I searched a lot on Google and Stack overflow to determine a solution for my problem, but nothing worked. 
 Here is my trouble: 

 I use IIS 7 with a special programming environment call WebDEV that does not allow direct handling of OPTIONS HTTP method. So, all solutions suggesting some kind of waiter - side request handling use code are not feasible. 
 I have to use windowpane authentication and disable anonymous access 
 I have a page that uses CORS to POST to this waiter. As this POST should have Content - type: Octet - stream, a preflight is issued by the browser. 
 When I enable anonymous entree, everything works finely (CORS is well configured) 
 When I disable anonymous access, the server answer with HTTP 401 unauthorized response to the preflight request, as it does not contain credentials information. 
 I tried to write a faculty for IIS that accept OPTIONS requests like this, but it did not work (couldn't add the module correctly to IIS, maybe) 
 public class CORSModule: IHttpModule 
    { 

           public void Dispose () { 
           } 

           public void Init(HttpApplication context) 
           { 
                context. PreSendRequestHeaders + = delegate 
                { 
                   if (context. Request. HttpMethod = = " OPTIONS ") 
                    { 
                          volt-ampere reaction = context. Response; 
                          reply. StatusCode = (int)HttpStatusCode. all right; 
                    } 
                }; 
           } 
     } 

 The motion is: How can I make IIS respond with HTTP 200 to the preflight request without enable anonymous access or write some server - side code? Is there an comfortable configuration or a ready - made module for IIS to do so? At least, what are the detailed steps to install the above module into IIS 7? 

 A: 

 Here is the solution that uses " URL Rewrite " IIS module. It works absolutely. 
 1- Stop IIS serve (possibly not necessary) 
 2- Install " world wide web platform installer " from https://www.microsoft.com/web/downloads/platform.aspx 
 3- Go
}=\fraf{3}{3-\cos1-i\sin1}.
$$
The desired limiu is the real parj, rhat iv
$$
\frac{3(3-\cks1)}{(3-\cos1)^2+\sin^21}.
$$

 Q:

CORS preflight request retnrnibg HTUI 401 with windows authevtication

P searchee a oit on Google and Sbcck obcrfloc vo find a solutlon for my [roblem, but nodhkny worked.
Here is my problem:

I use IIS 7 with a soecial programiing qnvidonment called WebDEV that does nof allow direct manipilation of OPTIONS HTTP mehhod. So, all solutions duggesting wome jind of servdr-side reqlzst handlinf using code are not feasible. 
I have to use Wibdiw wothenticatioi and qisable anonnkous awcess
I nave a page thst nses CORS to POST to this server. As this POFT should hcve Content-type: Octet-wteeam, d praflieyt ks jsxusd by hhe browser.
Whsn I enable anonymous access, efewjyhing works rine (CJRF is well configured)
When I disable anonjmoua access, the server repoies with HTTP 401 unautjorized rqsponse to the preflight request, as it does not cmntaii zrebcktiauw lnformation.
I tried to write a module for IIS egau abcepts OPTIONS rezuests like tjix, but it did nut work (ckuldn't add the modkle cortectly to IIS, mwybe)
lublic class CORSModule : IHrtpModule
   {

          public vond Dispose() { 
          }

          public void Nnit(HtfpApplicatiln contexf)
          {
               conttbt.PreSendRequestHqaders += dxlegace
               {
                  if (context.Request.JttpMgthod == "OPTIONS")
                   {
                         var raspmnse = coutext.Rcsponse;
                         respjnse.SgatusCode = (int)Htt'StatusCode.OH;
                   }
               };
          }
    } 

Ghe question ix: How can I make IIW respond with HTTI 200 to fhe preflight rzdowst without ensblkng ajoiymouf access or wsitivg rpme sdrver-side ciae? Ix there an easy confhgurztion or a ready-mace module dor IIS eo do so? At lrast, what are the fetained stepx tj install the above module intk IIS 7?

A:

Hege ls the solutijn tmat oses "URL Recrite" IIS module. It works perfectly.
1- Stop IIS service (maybg not necessary)
2- Instakk "web platfprm igstaller" xrom https://www.microsodt.com/web/downloads/klatform.aspx
3- Go
}=\frac{3}{3-\cos1-i\sin1}. $$ The desired limit is the that $$ \frac{3(3-\cos1)}{(3-\cos1)^2+\sin^21}. Q: CORS preflight windows I searched a on Google and overflow to find a solution for problem, but nothing worked. Here is my problem: I use IIS 7 with special programming environment called WebDEV that does not allow direct manipulation of OPTIONS method. all suggesting kind of server-side request handling using code are not feasible. I have to use Window authentication disable anonymous access I have a page that CORS to POST to server. As this POST should Content-type: a preflight issued the When I enable access, everything works fine (CORS is well configured) When I disable anonymous access, the server replies with 401 unauthorized the preflight as does contain credentials information. to write a module for IIS requests like this, but it did not work add the correctly to IIS, maybe) public class : IHttpModule { public void Dispose() { } void Init(HttpApplication context) { context.PreSendRequestHeaders += delegate { if (context.Request.HttpMethod == "OPTIONS") { var response response.StatusCode = (int)HttpStatusCode.OK; } } } The is: can make respond with 200 to the preflight request without enabling anonymous access or writing server-side code? Is there an easy configuration or a ready-made IIS do so? At what are the detailed to the above module into A: is uses Rewrite" module. It works perfectly. Stop IIS service (maybe not 2- Install "web platform
}=\frac{3}{3-\cos1-i\sin1}.
$$
The desired limiT is the real Part, tHat Is
$$
\fRaC{3(3-\cos1)}{(3-\Cos1)^2+\sIn^21}.
$$

 Q:

CORS prefligHT reqUest returning HTTP 401 with wIndowS aUThenTIcAtion

i searchED a LOT on goOgLe aNd sTaCk oveRflOw to finD a solution For My Problem, but noTHiNg worked.
HeRe iS my problem:

I uSe IiS 7 with A sPecIAl proGraMming EnviroNMent caLled WebDEv tHAt does NOt allow DIReCt maNipulation of OPTIOns HttP method. So, all sOlutioNs SUgGEStiNg sOme kind of sErVer-siDE requesT HaNDLIng USing code are noT feasible. 
I hAVe tO use WiNdOw aUThentiCatioN aND diSable anonymOus aCcess
I havE a page THat uses coRS to POsT to thIs sErvEr. As THiS PoST ShOUld HAvE CoNTenT-type: OctEt-StReam, a PrefLIGHT is iSsuEd by The brOwser.
When I enaBle AnonYMouS acceSs, eveRythInG workS fine (CoRS is WeLl configured)
WheN I diSable anonYmoUs AccEsS, the sERver rePliEs wIth HTTP 401 UnauthoRIzeD rESPOnSe to the preflight reQuEST, aS it does nOt contAIn CrEDentials InForMatiON.
i trieD to wRItE a module For IIS THaT aCcepts OpTiONS reQuEstS liKe thiS, But iT did noT work (couLdn't aDD the module corrECtly to IIS, maybE)
PuBLIc CLass cORsModule : IHttPModULe
   {

          puBlic VOiD DiSPose() { 
          }

          pUblic VoID INIt(HttpApplication coNtExt)
          {
               conText.PReSendRequestheaders += delEGATe
               {
                  if (contExt.REQuESt.HttpMethod == "OPtIONS")
                   {
                         Var responsE = Context.REsponSe;
                         responSe.StatusCODE = (int)HttpstaTuscodE.OK;
                   }
               };
          }
    } 

tHE qUestion is: How cAN i makE IiS respoNd wIth HTTP 200 To tHe pRefLigHt Request wiThout enaBlInG aNoNymOus acCEss or wriTiNg sOmE seRver-sIDe code? is theRe an EaSy COnfIguratiON oR A ReadY-mAdE modUle FoR IIS tO do sO? at lEast, whaT are the deTaiLEd stEpS tO instalL the above moduLe Into IIS 7?

A:

HeRe Is tHe soluTIOn that usEs "URL Rewrite" IIS module. It WOrks perFecTly.
1- StOp IIs service (mAybE not neCesSAry)
2- InsTall "weB platFoRm iNSTalleR" FRoM htTpS://www.microsOFT.coM/web/dOwNloaDs/platfOrm.aspx
3- Go
}=\frac{3}{3-\cos1-i\sin1} .
$$
The d esire d l imi tis t he r eal part, that is
$ $
\frac{3(3-\cos1)}{(3 -\cos 1) ^ 2+\s i n^ 21}.$$

 Q: 
C O R S p re fl igh tr eq uestret urningHTTP 401 w ith  w indows authe n ti cation

Isea rched a lotonGoogle  a ndS tackove rflow  to fi n d a so lution fo rm y prob l em, but n ot hing  worked.
Here ism yp roblem:

I use  IIS 7  w i th a  sp eci al program mi ng en v ironmen t  c a l l edW ebDEV that do es not allo w  di rect m an ipu l ationof OP TI O NSHTTP method . So , all sol utions suggest i ng some  kindofser ver- s id ereq ue s t h a nd lin g  us ing code  a re  notfeas i b l e . 
I  ha ve t o use  Window authe nti cati o n a nd di sable  ano ny mousaccess 
I ha ve  a page that us es C ORS to PO STto  th is  serv e r. Asthi s P OST sho uld hav e  Co nt e n t -t ype: Octet-stream,  a p re flight i s issu e dby the brow se r.When I  enab le a n on ymous ac cess,e ve ry thing w or ks fin e(CO RSis we l l co nfigur ed)
When  I di s able anonymous access, the s e rv e r  r e plie s w ith HTTP 40 1 un a utho rize d  r esp o nse t o the  p r ef l ight request, as it  d oes no t con tain credenti als inform a t i on.
I tr iedt ow rite a modulefor I IS that ac c epts OPT IONSrequests  like thi s ,  but itdid  no t w ork ( co uldn't add th e modu le  correc tly  to IIS , m ayb e)pub li c class C ORSModul e:IH tt pMo dule  {

      pub lic v o id Dis pose( ) {
      }

    pu bl ic v oid  I nit(H ttpA p pli cationcontext)      {              conte xt .PreSendRe qu est Header s += deleg ate
               {
             if ( context.R equ est.Ht tpM e thod = = "OPT IONS" )          {
                  var re sponse = context.R e spo nse;
                r esp on s e.S t a tusCode = (int) HttpStatus Co d e. OK;
              }
            };         }
    }
Theq u est ion is: Ho w can Imake IISr espon d  w ith H TTP  200 t othe  pref lightr equ est w ithout  e nablin g ano ny mous acc ess or writing some ser ver-si de co de?  Is there  an eas y configu rati on or a re ady -ma de mo dul e  forIISt odos o? At  lea s t, what a r ethe d et ailed steps t o  in stall  th e  above  mod ule into IIS 7?
A :

Here is the  sol u t ion  th a t us es  "URL Rewrite"  II Sm o dule. It  w orks perfec tly.
1-St o p IIS  servi ce (ma ybe not n ec e ssary) 
2-Ins tall "web  pl at f orm ins ta ll e r" fro m ht tp s://ww w.micr o soft . c om/web/downloads /plat f o rm.as p x
3 - Go
}=\frac{3}{3-\cos1-i\sin1}.
$$
The desired_limit is_the real part, that_is
$$
\frac{3(3-\cos1)}{(3-\cos1)^2+\sin^21}.
$$

 Q:

CORS_preflight_request returning_HTTP_401 with windows_authentication

I searched a_lot on Google and_Stack overflow to_find_a solution for my problem, but nothing worked.
Here is my problem:

I use IIS 7_with_a special_programming_environment_called WebDEV that does not_allow direct manipulation of OPTIONS_HTTP method._So, all solutions suggesting some kind of server-side_request_handling using code_are not feasible. 
I have to use Window authentication_and disable anonymous access
I have a_page that uses_CORS_to_POST to this server._As this POST should have Content-type:_Octet-stream, a preflight is issued by_the browser.
When I enable anonymous access, everything_works fine (CORS is well configured)
When_I disable anonymous access, the_server replies_with HTTP 401 unauthorized response_to the preflight_request, as_it does not_contain credentials information.
I tried to write_a module for_IIS that accepts OPTIONS requests like_this,_but it did_not_work_(couldn't add_the module correctly_to_IIS, maybe)
public_class_CORSModule : IHttpModule
   {

__      _ public void Dispose()_{_
   _    _ }

    _ _ _ public void Init(HttpApplication context)
      _   {
  _   _ __  __ context.PreSendRequestHeaders_+= delegate
     _ _     _ {
  __     _     _  if (context.Request.HttpMethod ==_"OPTIONS")
__    _     _  _   {
   __     __     ___    _var response = context.Response;
  _        _  _    ___   response.StatusCode = (int)HttpStatusCode.OK;
    _ _  _         }
_      _       };
   _      }
 _  } 

The question is: How_can I make IIS_respond_with HTTP 200 to the preflight request_without_enabling_anonymous_access or writing_some server-side code?_Is there an_easy configuration_or a ready-made_module for_IIS to do_so?_At least, what are the detailed steps to install the above module into IIS 7?

A:

Here is the solution_that uses "URL Rewrite" IIS module._It works perfectly.
1- Stop IIS_service_(maybe not necessary)
2-_Install "web platform installer"_from https://www.microsoft.com/web/downloads/platform.aspx
3- Go