https://bz.apache.org/bugzilla/show_bug.cgi?id=62569
Bug ID: 62569
Summary: Async servlet setReadListener does not work if post
request data arrives much later than headers
Product: Tomcat 9
Version: 9.0.10
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Servlet
Assignee: dev@tomcat.apache.org
Reporter: zdap...@google.com
Target Milestone: -----
In async mode, servlet sets a ReadListener, and invokes onDataAvailable
callbacks.
If a client first sends out a POST request headers, then 2 seconds later sends
out the payload. The ReadListener callbacks will never be invoked, and the
client never receives a response. Glassfish 5.0 does not have this issue. This
may not be a serious problem for HTTP/1.1 and servlet 3.1, but it is a problem
for HTTP/2 and servlet 4.0 because HTTP/2 is ful-duplex.
See the servlet code snippet in the Java EE tutorial example:
https://javaee.github.io/tutorial/servlets013.html
Client side command:
telnet localhost 8080
POST /asyncioservlet HTTP/1.1
Host: localhost
Content-Type: application/json
Transfer-Encoding: chunked
10
{"key1":"value"}
0
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