https://bz.apache.org/bugzilla/show_bug.cgi?id=59261
Bug ID: 59261
Summary: Request getAsyncContext should throw
IllegalStateException if async is not started
Product: Tomcat 8
Version: 8.0.33
Hardware: PC
OS: Mac OS X 10.1
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
Assignee: dev@tomcat.apache.org
Reporter: rwi...@gmail.com
If ServletRequest.getAsyncContext() IllegalStateException is invoked and has
not been put into asynchronous mode an . From the javadoc [1]:
> Throws: IllegalStateException - if this request has not been put into
> asynchronous mode, i.e., if neither startAsync() nor
> startAsync(ServletRequest,ServletResponse) has been called
For implementations of HttpServletRequestWrapper that override this method, the
fact that result can be null can cause problems [2]. It appears there are parts
of tomcat that check if getAsyncContext() is null rather than checking
isAsycStarted(). For example, ApplicationDispatcher checks if getAsyncContext()
is null.
[1]
http://docs.oracle.com/javaee/6/api/javax/servlet/ServletRequest.html#getAsyncContext()
[2] https://github.com/spring-cloud/spring-cloud-netflix/issues/868
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