Cookie Demo needed - Printable Version

Cookie Demo needed - Printable Version

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Cookie Demo needed - cpstevenc - 04-24-2019

Is there any cookie usage demos? There isn't one in the Github download of demos.

Using Tokyo 10.2.1

IW 15.0.20

Stand Alone Server

TIWStandAloneServer being used to have a custom server form.

AllowMultipleSessionsPerUser = TRUE

For our VCL / FMX Mobile App... gotta supply 4 values to login in to the service.

Two of them can be restored back from a cookie when you come back to page at a later date/time... the other two values have to be put in.

I am not 100% sure the proper usages of

WebApplication.Response.Cookies.AddCookie
and
webapplication.Request.CookieFields.Values

of when I should be using these... And for the addCookie, what kind of parameters I should be using for PATH and such as I don't want it
tied to a the random generated session path/id.

Thanks!
-

RE: Cookie Demo needed - DanBarclay - 04-24-2019

Here is something from the old forum (forum is now readonly)
https://forums.embarcadero.com/thread.jspa?messageID=693421#693421

Also see:
https://forums.embarcadero.com/thread.jspa?messageID=882882#882882

From Alex:

Reading cookie value:

Class THttpRequest, method GetCookieValue:

function GetCookieValue(const aName: string): string;

Writing a cookie:

Class THttpReply, use method AddCookie from Cookies object (type THttpCookieList), e.g.:

Reply.Cookies.AddCookie()

function AddCookie(const aName, aValue, aPath: string; const aExpires: TDateTime; const aHttpOnly: Boolean = False; const aSecure: Boolean = False): Integer;

Also from Alex in the second thread, HTTPOnly...
Is there a way to set the HTTPOnly flag in the Set-Cookie HTTP
response header?

Is this a custom cookie or the default session tracking cookie?

If this is the default session tracking cookie, just use the
ServerController.CookieOptions property:

- set CookieOptions.HttpOnly to True/False, according to your
requirements

If this is a custom cookie, you can set this option when adding the
cookie to the response cookie collection:

THttpReply.Cookies is the cookie coolection object.

You use its Add() method to add a custom cookie to your response, and
this method has this signature:

THttpCookieList.AddCookie(const aName, aValue, aPath: string; const
aExpires: TDateTime; const aHttpOnly: Boolean = False; const aSecure:
Boolean = False): Integer;

Dan

RE: Cookie Demo needed - cpstevenc - 04-25-2019

I ran into those too.. either calls changed, or missing some information in those original posts.

I need cookies that are not locked to the session. So user can come back at a later date and data is there to grab?

RE: Cookie Demo needed - DanBarclay - 04-25-2019

(04-25-2019, 05:05 AM)cpstevenc Wrote: I ran into those too.. either calls changed, or missing some information in those original posts.

I need cookies that are not locked to the session. So user can come back at a later date and data is there to grab?

Try this to set your cookie.

Code:
 webapplication.Response.Cookies.Add(THTTPCookie.Create(CookieName,CookieValue,'/',Expireon,true));

ExpireOn is the UTCDateTime (as a Real). Set to -1 for a session cookie.
Name/Value are String.

Try this to read the cookie:

Code:
  Result := webapplication.Request.CookieFields.Values[sName];

It should work, but there may be better ways.

Dan

RE: Cookie Demo needed - cpstevenc - 05-05-2019

(04-25-2019, 06:14 AM)DanBarclay Wrote:
(04-25-2019, 05:05 AM)cpstevenc Wrote: I ran into those too.. either calls changed, or missing some information in those original posts.

I need cookies that are not locked to the session. So user can come back at a later date and data is there to grab?

Try this to set your cookie.

Code:
webapplication.Response.Cookies.Add(THTTPCookie.Create(CookieName,CookieValue,'/',Expireon,true));
ExpireOn is the UTCDateTime (as a Real). Set to -1 for a session cookie.
Name/Value are String.

Try this to read the cookie:

Code:
Result := webapplication.Request.CookieFields.Values[sName];

It should work, but there may be better ways.

Dan

Thanks!

UTCDateTime was my issue.

Also used Chrome inspector and took me a bit to find the call that was actually kicking off the COOKIE code to save and saw my date being used was in like 1927 .... so expired Smile