https://issues.apache.org/bugzilla/show_bug.cgi?id=55842
Bug ID: 55842
Summary: response.setBufferSize() does not seem to work
properly
Product: Tomcat 7
Version: 7.0.47
Hardware: PC
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
Assignee: [email protected]
Reporter: [email protected]
I found a problem with setting the buffer size for the ServletResponse.
If I call 'response.setBufferSize(1,000,000);' and send about 20,000
characters, the response will be chunked even though it should not.
The response is sent in several chunks and contains the 'Transfer-Encoding:
chunked' response header.
In my understanding in this case the response should be fully buffered on the
server and then sent as a whole containing the Content-Length-header.
This causes a problem in my application because I want to use a larger buffer
to be able to redirect to an error page if an error occurs during rendering the
response.
I was able to reproduce this on Tomcat 7.0.39, 7.0.40, 7.0.42, 7.0.47. Tomcat
7.0.37 works fine and as expected.
This is easily reproducable by using a JSP as follows:
<%
response.setBufferSize(1000*1000);
for (int i = 0; i < 100; i++) {
for (int j = 0; j < 100; j++) {
response.getWriter().write("X");
}
response.getWriter().write("<br />");
}
%>
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