https://bz.apache.org/bugzilla/show_bug.cgi?id=58655
Bug ID: 58655
Summary: IllegalStateException: calling
HttpServletResponse#sendRedirect() with RemoteIpFilter
Product: Tomcat 8
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
Assignee: dev@tomcat.apache.org
Reporter: cristikl...@gmail.com
Created attachment 33299
--> https://bz.apache.org/bugzilla/attachment.cgi?id=33299&action=edit
stacktrace of error
When calling `HttpServletResponse#sendRedirect()`, if `RemoteIpFilter` is in
use, an `IllegalStateException` is thrown (see attached stack-trace).
The error steams from the way `RemoteIpFilter.XForwardedResponse` tries to
rewrite the 'Location' header. According to the servlet API, a response is
considered committed after calling `sendRequest()` and it is illegal to call
either `reset()` or another `sendRequest()` thereafter.
WORKAROUND:
Comment the code after `super.sendRedirect(location);`. However, this
effectively disables the `RemoteIpFilter` on the response path and makes the
server return an URL with incorrect scheme.
[1]
https://github.com/apache/tomcat/blob/trunk/java/org/apache/catalina/filters/RemoteIpFilter.java#L679
[2] https://tomcat.apache.org/tomcat-8.0-doc/servletapi/index.html
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