FULL PRODUCT VERSION :
java version "1.7.0_05"
Java(TM) SE Runtime Environment (build 1.7.0_05-b05)
Java HotSpot(TM) 64-Bit Server VM (build 23.1-b03, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.1.7601]

A DESCRIPTION OF THE PROBLEM :
Unless using the -Djava.net.preferIPv4Stack=true, the report in bug 7115226 hangs every time.

REGRESSION. Last worked in version 7

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
See bug 7115226 - compile and run the program.

Another way to reproduce is to run a Tomcat unit test

1. svn co http://svn.apache.org/repos/asf/tomcat/trunk
2. cd trunk
3. [with java 6] ant
4. [with java 7] ant -Dtest.entry=org.apache.catalina.connector.TestSendFile test-bio test-nio

Work arounds are
a) Use Java 6
b) Use -Djava.net.preferIPv4Stack=true when using Java 7



EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
test case hangs using Java 7, works fine when using Java 6 or using -Djava.net.preferIPv4Stack=true


REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
-Djava.net.preferIPv4Stack=true