[Jcaptcha-users] Server crash due to ImageCaptcha!

SourceForge Headquarters 225 Broadway Suite 1600 San Diego, CA 92101 +1 (858) 454-5900

Dear Team,

We have been using JCPATCH version jcaptcha-1.0-mod.jar in our project to
block automated spammers.

We have been using this in our registration, forgot password,forgot user id
and forgot both use cases.

We identified that our web logic servers crashing at least once in a month
with some STUCK THREAD issues caused due to ImageCapcha Servlet.

I pasted the server error below. Can you guys please have a look and
suggest what might have been went wrong. Also please suggest how to prevent
this in future?

In the last one year we encounter this issue more than 12 times. So we were
forced to restart our servers.

Thanks,

Prasad Reddy

001-213-244-2319

* 10:48:38.000 PM*

####<Apr 12, 2014 10:48:38 PM PDT> <Error> <WebLogicServer> <
ejap6.sempra.com> <umscgap6> <[ACTIVE] ExecuteThread: '73' for queue:
'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <>
<1397368118954> <BEA-000337> <[STUCK] ExecuteThread: '58' for queue:
'weblogic.kernel.Default (self-tuning)' has been busy for "602" seconds
working on the request
"weblogic.servlet.internal.ServletRequestImpl@1b634124[

GET */forgotuserid/imageCaptcha* HTTP/1.1

Accept: image/webp,*/*;q=0.8

User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML,
like Gecko) Chrome/34.0.1847.116 Safari/537.36

DNT: 1

Referer:
https://myaccountum.socalgas.com/forgotuserid/forgotUserIdStepOneEmail.jsf?fromLogin=yes

Accept-Encoding: gzip,deflate,sdch

Accept-Language: en,ru;q=0.8,en-US;q=0.6

Cookie:
scgumdomeaen=qZyJTKhLZRrLVshVYP2F3BPVc3ng02KnDB0pm66kkYFrnbmGM4Sy!-598822392;
SMTRYNO=4;
scgumdomfus=L1lYTKhNL89NJt8JThjCL8LwR90nf14DVNThQskvLKTR3HRvGTWp!-598822392;
umscgdomfbo=rFPgTKhNQ40LnMyy8QhT7mLyqg7xnC5ZPbmp2VVL3LjGcjhpH0RK!1031570784

Connection: Keep-Alive

Proxy-Client-IP: 68.109.88.211

X-Forwarded-For: 68.109.88.211

X-WebLogic-KeepAliveSecs: 30

X-WebLogic-Request-ClusterInfo: true

x-weblogic-cluster-hash: oMBQxNJeBu4qh3dvmvm36DUCLxQ

]", which is more than the configured time (StuckThreadMaxTime) of "600"
seconds. Stack trace:

Thread-353267 "[STUCK] ExecuteThread: '58' for queue:
'weblogic.kernel.Default (self-tuning)'" <alive, suspended, priority=1,
DAEMON> {

    java.util.HashMap.get(HashMap.java:368)

    sun.font.SunLayoutEngine.getEngine(SunLayoutEngine.java:109)

    sun.font.GlyphLayout$EngineRecord.init(GlyphLayout.java:617)

    sun.font.GlyphLayout.nextEngineRecord(GlyphLayout.java:487)

    sun.font.GlyphLayout.layout(GlyphLayout.java:349)

sun.font.ExtendedTextSourceLabel.createGV(ExtendedTextSourceLabel.java:301)

    sun.font.ExtendedTextSourceLabel.getGV(ExtendedTextSourceLabel.java:293)

sun.font.ExtendedTextSourceLabel.createLogicalBounds(ExtendedTextSourceLabel.java:208)

sun.font.ExtendedTextSourceLabel.getAdvance(ExtendedTextSourceLabel.java:116)

    java.awt.font.TextLine.init(TextLine.java:132)

    java.awt.font.TextLine.<init>(TextLine.java:93)

    java.awt.font.TextLine.fastCreateTextLine(TextLine.java:879)

    java.awt.font.TextLayout.fastInit(TextLayout.java:569)

    java.awt.font.TextLayout.<init>(TextLayout.java:485)

    sun.java2d.SunGraphics2D.drawString(SunGraphics2D.java:2801)

com.octo.captcha.component.image.textpaster.ChangeableAttributedString.drawString(ChangeableAttributedString.java:93)

com.octo.captcha.component.image.textpaster.RandomTextPaster.pasteText(RandomTextPaster.java:65)

com.octo.captcha.component.image.wordtoimage.ComposedWordToImage.pasteText(ComposedWordToImage.java:130)

com.octo.captcha.component.image.wordtoimage.AbstractWordToImage.getImage(AbstractWordToImage.java:45)

com.octo.captcha.image.gimpy.GimpyFactory.getImageCaptcha(GimpyFactory.java:71)

com.octo.captcha.image.ImageCaptchaFactory.getCaptcha(ImageCaptchaFactory.java:37)

com.octo.captcha.engine.GenericCaptchaEngine.getNextCaptcha(GenericCaptchaEngine.java:81)

com.octo.captcha.service.AbstractCaptchaService.generateAndStoreCaptcha(AbstractCaptchaService.java:156)

com.octo.captcha.service.AbstractManageableCaptchaService.generateCountTimeStampAndStoreCaptcha(AbstractManageableCaptchaService.java:336)

com.octo.captcha.service.AbstractManageableCaptchaService.generateAndStoreCaptcha(AbstractManageableCaptchaService.java:312)

com.octo.captcha.service.AbstractCaptchaService.getChallengeForID(AbstractCaptchaService.java:71)

com.octo.captcha.service.multitype.GenericManageableCaptchaService.getImageChallengeForID(GenericManageableCaptchaService.java:81)

com.octo.captcha.module.web.image.ImageToJpegHelper.flushNewCaptchaToResponse(ImageToJpegHelper.java:55)

com.sempra.eservices.captcha.ImageCaptchaServlet.doGet(ImageCaptchaServlet.java:20)

    javax.servlet.http.HttpServlet.service(HttpServlet.java:700)

    javax.servlet.http.HttpServlet.service(HttpServlet.java:815)

weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:224)

weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:108)

weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:206)

    weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)

weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:55)

weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:25)

weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:55)

weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.doIt(WebAppServletContext.java:3656)

weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3650)

weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:308)

weblogic.security.service.SecurityManager.runAs(SecurityManager.java:117)

weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2204)

weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2126)

weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1412)

    weblogic.work.ExecuteThread.execute(ExecuteThread.java:198)

    weblogic.work.ExecuteThread.run(ExecuteThread.java:165)

}