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Fix concurrent issue in SingleSignOutFilter#doFilter method #874

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Fix concurrent issue in SingleSignOutFilter#doFilter method #874

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9 changes: 7 additions & 2 deletions cas-client-core/src/main/java/org/apereo/cas/client/session/SingleSignOutFilter.java
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Original file line number Diff line number Diff line change
Expand Up @@ -94,8 +94,13 @@ public void doFilter(final ServletRequest servletRequest, final ServletResponse
* <p>Workaround for now for the fact that Spring Security will fail since it doesn't call {@link #init(javax.servlet.FilterConfig)}.</p>
* <p>Ultimately we need to allow deployers to actually inject their fully-initialized {@link SingleSignOutHandler}.</p>
*/
if (!this.handlerInitialized.getAndSet(true)) {
HANDLER.init();
if (!this.handlerInitialized.get()) {
synchronized (this) {
if (!this.handlerInitialized.get()) {
HANDLER.init();
this.handlerInitialized.set(true);
}
}
}

if (HANDLER.process(request, response)) {
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