Tomcat 7 exception when cookie contain umlaut characters

Question

I'm a developer and I face the exception below when Cookie contain umlaut characters (ä,ö,ü), I tried many solutions and configurations without any result.

I use Tomcat7

Any solution please

Feb 21, 2013 6:29:16 AM org.apache.coyote.http11.AbstractHttp11Processor process
SEVERE: Error processing request
java.lang.IllegalArgumentException: Control character in cookie value or attribute.
    at org.apache.tomcat.util.http.CookieSupport.isHttpSeparator(CookieSupport.java:193)
    at org.apache.tomcat.util.http.Cookies.getTokenEndPosition(Cookies.java:488)
    at org.apache.tomcat.util.http.Cookies.processCookieHeader(Cookies.java:291)
    at org.apache.tomcat.util.http.Cookies.processCookies(Cookies.java:168)
    at org.apache.tomcat.util.http.Cookies.getCookieCount(Cookies.java:106)
    at org.apache.catalina.connector.CoyoteAdapter.parseSessionCookiesId(CoyoteAdapter.java:919)
    at org.apache.catalina.connector.CoyoteAdapter.postParseRequest(CoyoteAdapter.java:688)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:402)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1600)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
    at java.lang.Thread.run(Thread.java:722)

Answer 1

According to a comment on another question you need to upgrade to tomcat 8.0.15 (or higher) and enable the RFC 6455 cookie processor. Documented here: http://tomcat.apache.org/tomcat-8.0-doc/config/cookie-processor.html

Enable it in your conf/context.xml via:

<Context>
  <CookieProcessor className="org.apache.tomcat.util.http.Rfc6265CookieProcessor" />
</Context>