How to clear the client-side .Net SSL session cache

The ServicePoint class has an internal method called ReleaseAllConnectionGroups that sets KeepAlive = false on all the connections then releases them. This answer includes all the reflection needed, but setting KeepAlive = false on every HttpWebRequest will keep the client-side .Net SSL session cache clear.

SslEmptyCache may be required to clear caching of SSL-SessionID and/or tickets done by SCHANNEL at the native-code level.


I think you're looking for the HttpRequestCacheLevel Enumeration value NoCacheNoStore

http://msdn.microsoft.com/en-us/library/system.net.cache.httprequestcachelevel.aspx

You can then overwrite the HttpRequestCachePolicy

http://msdn.microsoft.com/en-us/library/system.net.webrequest.cachepolicy.aspx


Comments

  1. Valentino

    • 2018/4/2

    The ServicePoint class has an internal method called ReleaseAllConnectionGroups that sets KeepAlive = false on all the connections then 

  2. Ramon

    • 2017/6/29

    This answer includes all the reflection needed, but setting KeepAlive = false on every HttpWebRequest will keep the client-side .Net SSL session cache clear. SslEmptyCache may be required to clear caching of SSL-SessionID and/or tickets done by SCHANNEL at the native-code level.

  3. Douglas

    • 2015/1/10

    How do you explicitely "log them out"? If this is a JS call to "ClearAuthenticationCache" on the client side, a PowerUser can circumvent that 

  4. Jamir

    • 2018/4/1

    SSL_get1_session() can pull the session out of the ssl object for use later. If we use SSL_get1_session() we need a call to SSL_SESSION_free() to destroy the session that was returned. Build and run the above code (with the server from the above referenced server session cache post) and we’ll see the below output.

  5. Taylor

    • 2019/8/12

    In addition to clearing the SSL session cache, this should also clear the SSL client certificate cache, as clearing one without the other would prevent the 

  6. Amari

    • 2018/5/11

    Set the HttpWebRequest.KeepAlive property to false to prevent the caching. To get any more control, it looks like you'd have to start reflecting down. See the question How to clear the client-side .Net SSL session cache.

  7. Theo

    • 2015/9/21

    Sessions vs. Profiles. Beyond the Clear SSL State button and ClearAuthenticationCache API, Internet Explorer offered users a New Session command 

  8. Abram

    • 2016/7/2

    Re: How to clear client side cache. Feb 03, 2009 03:03 AM. | shashankgwl | LINK. Use formsauthentication, once logged out u'll be redirected to the login page and will be there untill you login into the system, no need add scripts or session handling for this. SHASHANK BHIDE.

  9. Petit

    • 2017/11/15

    However, maintaining the session cache imposes a sub- stantial memory burden on the server. In addition, when multiple SSL servers are used together for load 

  10. Titus

    • 2021/4/19

    To clear the SSL state in Internet Explorer, follow these steps: To access the Delete Browsing History dialog: If you are using Internet Explorer 8, on the Tools menu, click Internet Options. If you are using Internet Explorer 9 or 10, click the icon, and then click Internet options. Click the Content tab. Click Clear SSL state, and then click OK.

  11. Zeke

    • 2018/4/6

    Don't insert empty fragments, This option disables a countermeasure Warning: If the timeout value for the client-side SSL session cache is set to zero, 

  12. Tru

    • 2016/4/8

    A SSL session is either known by client and server or it is not known. There is no API to delete a specific session on the browser, i.e. all you can do is close the browser. The situation is similar on the server side, especially if the stateless session tickets are used to maintain a session.

  13. Caiden

    • 2019/5/14

    That session state is maintained in the browser's cache, i'm convinced. Renegotiating and disabling the SSL session cache on the server 

  14. Gutierrez

    • 2015/7/15

    Data that's held in a client-side cache is generally considered to be outside the auspices of the service that provides the data to the client. A service cannot directly force a client to add or remove information from a client-side cache.

  15. Ian

    • 2018/4/7

    This example assumes a basic understanding of the SSL/TLS protocol. java -Djavax.net.debug=all \ -Djavax.net.ssl. No cached client session

  16. Jad

    • 2018/11/6

    rows attribute, TextBox control, 85 runat = "server", caching; cookies; sessions script source access, access permissions, NET, 778 server-side 

  17. Guerra

    • 2020/5/17

    Given the difference between an SSL connection and an SSL session Clearing the s_cachedCreds in SslSessionsCache (serverside, 

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