https://bz.apache.org/bugzilla/show_bug.cgi?id=59912
Bug ID: 59912
Summary: CoyoteReader.readLine throws IO exception on multi
line POST of exactly 8192 bytes
Product: Tomcat 8
Version: 8.0.33
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
Assignee: dev@tomcat.apache.org
Reporter: peter.teunis...@cerner.com
Created attachment 34080
--> https://bz.apache.org/bugzilla/attachment.cgi?id=34080&action=edit
Zip with fiddler trace, servlet Java source, web.xml
Tomcat 8.0.33 (also fails on 7.0.55)
JDK 1.8.0_66
Wrote a servlet that simply calls readLine() on the
HttpServletRequest.getReader() and dumps the incoming lines.
When I do a POST that has at least two lines in the body, with a content-length
of exactly 8192 bytes, the last readLine() call throws an IOException.
8191 works fine, 8193 works fine, but 8192 bombs.
java.io.IOException
at org.apache.catalina.connector.InputBuffer.reset(InputBuffer.java:576)
at org.apache.catalina.connector.CoyoteReader.reset(CoyoteReader.java:142)
at
org.apache.catalina.connector.CoyoteReader.readLine(CoyoteReader.java:200)
at com.cerner.TestServlet.service(TestServlet.java:33)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:522)
at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1095)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1502)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1458)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
See attached servlet source, fiddler trace file.
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