Bug ID: JDK-7183450 Hang reading from HTTP server with JDK7 when IPv6 is enabled

Type: Bug
Component: core-libs
Sub-Component: java.net
Affected Version: 7,7u5

Priority: P3
Status: Resolved
Resolution: Cannot Reproduce
OS: windows_7
CPU: x86

Submitted: 2012-07-11
Updated: 2013-07-15
Resolved: 2013-07-15

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

This issue is no longer reproducible. Although the Tomcat project pointed out no longer compiles, creating a socket and connecting/reading from it does not hang when using a vpn environment.

15-07-2013

EVALUATION The issue is not reproducible too. This could be a firewall issue or some network configuration issue on the host machine/router.

23-07-2012

Duplicate :	JDK-7115226 - Windows Vista socke read hangs
Duplicate :	JDK-7184280 - Applets from a local http server don't load with Windows 7 64 bits and JRE 1.7
Duplicate :	JDK-7181141 - Socket fails to return available data for Windows 7 64 and Java 7