I am experiencing URL hangs on SOLARIS 2.6 with the latest JDK1.2FCS-G
build. This is probably all related to the TCP bug I put in namely bugid
4168586. Below is an invocation of a URL program called GetURLInfo which
has a stack trace of the hang.

The GetURLInfo program is part of the attachment. To invoke the GetURLInfo
program type the following in a loop. It may take awhile before the hang
will occur but it will eventually occur.

% sh
% while true
> do
> java -Djava.compiler=none -DproxyHost=webcache.east.sun.com -DproxyPort=8080 -Dftp.proxyHost=webcache.east.sun.com -Dftp.proxyPort=8080 GetURLInfo -d -v -f data/GetURLInfo.data -o results/outgeturlinfo
> done

To extract the GetURLInfo program type:

% uncompress url.tar.Z
% tar xvf url.tar
% cd url

To run the GetURLInfo program type:

You will need to set -DproxyHost and -Dftp.proxyHost to your correct server.

% java -Djava.compiler=none -DproxyHost=webcache.east.sun.com -DproxyPort=8080 -Dftp.proxyHost=webcache.east.sun.com -Dftp.proxyPort=8080 GetURLInfo -d -v -f data/GetURLInfo.data -o results/outgeturlinfo

Warning: JIT compiler "none" not found. Will use interpreter.
DEBUG: opening URL file: data/GetURLInfo.data
DEBUG: parsing stream to URL: http://www.sun.com/
DEBUG: printing info for URL: http://www.sun.com/
DEBUG: opening connection to URL: http://www.sun.com/
DEBUG: connecting to URL: http://www.sun.com/
DEBUG: parsing stream to URL: http://www.sun.com/
DEBUG: printing info for URL: http://www.sun.com/
DEBUG: opening connection to URL: http://www.sun.com/
DEBUG: connecting to URL: http://www.sun.com/
DEBUG: parsing stream to URL: http://www.hp.com/
DEBUG: printing info for URL: http://www.hp.com/
DEBUG: opening connection to URL: http://www.hp.com/
DEBUG: connecting to URL: http://www.hp.com/
DEBUG: parsing stream to URL: http://www.hp.com/
DEBUG: printing info for URL: http://www.hp.com/
DEBUG: opening connection to URL: http://www.hp.com/
DEBUG: connecting to URL: http://www.hp.com/
DEBUG: parsing stream to URL: http://www.ibm.com/
DEBUG: printing info for URL: http://www.ibm.com/
DEBUG: opening connection to URL: http://www.ibm.com/
DEBUG: connecting to URL: http://www.ibm.com/
DEBUG: parsing stream to URL: http://www.ibm.com/
DEBUG: printing info for URL: http://www.ibm.com/
DEBUG: opening connection to URL: http://www.ibm.com/
DEBUG: connecting to URL: http://www.ibm.com/
DEBUG: parsing stream to URL: http://www.digital.com/
DEBUG: printing info for URL: http://www.digital.com/
DEBUG: opening connection to URL: http://www.digital.com/
DEBUG: connecting to URL: http://www.digital.com/
DEBUG: parsing stream to URL: http://www.digital.com/
DEBUG: printing info for URL: http://www.digital.com/
DEBUG: opening connection to URL: http://www.digital.com/
DEBUG: connecting to URL: http://www.digital.com/
DEBUG: parsing stream to URL: http://www.netscape.com/
DEBUG: printing info for URL: http://www.netscape.com/
DEBUG: opening connection to URL: http://www.netscape.com/
DEBUG: connecting to URL: http://www.netscape.com/
DEBUG: parsing stream to URL: http://www.netscape.com/
DEBUG: printing info for URL: http://www.netscape.com/
DEBUG: opening connection to URL: http://www.netscape.com/
DEBUG: connecting to URL: http://www.netscape.com/
DEBUG: parsing stream to URL: http://www.microsoft.com/
DEBUG: printing info for URL: http://www.microsoft.com/
DEBUG: opening connection to URL: http://www.microsoft.com/
DEBUG: connecting to URL: http://www.microsoft.com/
DEBUG: parsing stream to URL: http://www.microsoft.com/
DEBUG: printing info for URL: http://www.microsoft.com/
DEBUG: opening connection to URL: http://www.microsoft.com/
DEBUG: connecting to URL: http://www.microsoft.com/
DEBUG: parsing stream to URL: http://www.joeblow.joeblow/
DEBUG: printing info for URL: http://www.joeblow.joeblow/
DEBUG: opening connection to URL: http://www.joeblow.joeblow/
DEBUG: connecting to URL: http://www.joeblow.joeblow/
DEBUG: parsing stream to URL: http://www.joeblow.joeblow/
DEBUG: printing info for URL: http://www.joeblow.joeblow/
DEBUG: opening connection to URL: http://www.joeblow.joeblow/
DEBUG: connecting to URL: http://www.joeblow.joeblow/
DEBUG: parsing stream to URL: gopher://gopher.utah.edu/11/Search%20menu%20titles%20using%20jughead/Search%20other%20institutions%20using%20jughead
DEBUG: printing info for URL: gopher://gopher.utah.edu/11/Search%20menu%20titles%20using%20jughead/Search%20other%20institutions%20using%20jughead
DEBUG: opening connection to URL: gopher://gopher.utah.edu/11/Search%20menu%20titles%20using%20jughead/Search%20other%20institutions%20using%20jughead
DEBUG: connecting to URL: gopher://gopher.utah.edu/11/Search%20menu%20titles%20using%20jughead/Search%20other%20institutions%20using%20jughead
DEBUG: parsing stream to URL: ftp://ftp.javasoft.com/docs/jdk1.0.2/JDK-1_0_2-apidocs.zip
DEBUG: printing info for URL: ftp://ftp.javasoft.com/docs/jdk1.0.2/JDK-1_0_2-apidocs.zip
DEBUG: opening connection to URL: ftp://ftp.javasoft.com/docs/jdk1.0.2/JDK-1_0_2-apidocs.zip
DEBUG: connecting to URL: ftp://ftp.javasoft.com/docs/jdk1.0.2/JDK-1_0_2-apidocs.zip
DEBUG: parsing stream to URL: ftp://ftp.javasoft.com/docs/jdk1.0.2/JDK-1_0_2-apidocs.tar.Z
DEBUG: printing info for URL: ftp://ftp.javasoft.com/docs/jdk1.0.2/JDK-1_0_2-apidocs.tar.Z
DEBUG: opening connection to URL: ftp://ftp.javasoft.com/docs/jdk1.0.2/JDK-1_0_2-apidocs.tar.Z
DEBUG: connecting to URL: ftp://ftp.javasoft.com/docs/jdk1.0.2/JDK-1_0_2-apidocs.tar.Z
FINALSTATUS:GetURLInfo:EXIT_PASS:0:TEST PASSED
Warning: JIT compiler "none" not found. Will use interpreter.
DEBUG: opening URL file: data/GetURLInfo.data
DEBUG: parsing stream to URL: http://www.sun.com/
DEBUG: printing info for URL: http://www.sun.com/
DEBUG: opening connection to URL: http://www.sun.com/
DEBUG: connecting to URL: http://www.sun.com/
DEBUG: parsing stream to URL: http://www.sun.com/
DEBUG: printing info for URL: http://www.sun.com/
DEBUG: opening connection to URL: http://www.sun.com/
DEBUG: connecting to URL: http://www.sun.com/
^\SIGQUIT

Full thread dump Classic VM (JDK-1.2fcs-G, green threads):
    "Finalizer" (TID:0xebc98390, sys_thread_t:0x66d00, state:CW) prio=8
        at java.lang.Object.wait(Native Method)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:113)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:128)
        at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:174)
    "Reference Handler" (TID:0xebc98420, sys_thread_t:0x64d80, state:CW) prio=10
        at java.lang.Object.wait(Native Method)
        at java.lang.Object.wait(Object.java:303)
        at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:209)
    "Signal dispatcher" (TID:0xebc98190, sys_thread_t:0x62e28, state:R) prio=5
    "main" (TID:0xebc98250, sys_thread_t:0x28d78, state:R) prio=5 *current thread*
        at java.net.InetAddressImpl.lookupAllHostAddr(Native Method)
        at java.net.InetAddress.getAllByName0(InetAddress.java:543)
        at java.net.InetAddress.getAllByName0(InetAddress.java:508)
        at java.net.InetAddress.getByName(InetAddress.java:429)
        at sun.net.www.http.HttpClient.<init>(HttpClient.java:259)
        at sun.net.www.http.HttpClient.<init>(HttpClient.java:283)
        at sun.net.www.http.HttpClient.New(HttpClient.java:295)
        at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:400)
        at GetURLInfo.PrintURLInfo(GetURLInfo.java:142)
        at GetURLInfo.main(GetURLInfo.java:64)
Monitor Cache Dump:
    java.lang.ref.Reference$Lock@EBC98430/EBCCD688: <unowned>
        Waiting to be notified:
            "Reference Handler" (0x64d80)
    java.util.HashMap@EBCA1310/EBD15778: owner "main" (0x28d78) 1 entry
    java.lang.ref.ReferenceQueue$Lock@EBC983A8/EBCCDB90: <unowned>
        Waiting to be notified:
            "Finalizer" (0x66d00)
Registered Monitor Dump:
    utf8 hash table: <unowned>
    JNI pinning lock: <unowned>
    JNI global reference lock: <unowned>
    BinClass lock: <unowned>
    Class linking lock: <unowned>
    System class loader lock: <unowned>
    Code rewrite lock: <unowned>
    Heap lock: <unowned>
    Monitor cache lock: owner "Signal dispatcher" (0x62e28) 1 entry
    Dynamic loading lock: <unowned>
    Monitor IO lock: <unowned>
    User signal monitor: <unowned>
    Child death monitor: <unowned>
    I/O monitor: <unowned>
    Alarm monitor: <unowned>
        Waiting to be notified:
            <unknown thread> (0x2bc48)
    Thread queue lock: owner "Signal dispatcher" (0x62e28) 1 entry
    Monitor registry: owner "Signal dispatcher" (0x62e28) 1 entry