Support for multicast sockets

Does J2ME provide support for multicast sockets?

Hi,
Thanks for the reply.
I was studying J2ME Networking.
So just wanted to know.

Similar Messages

  • IPv6 Multicast support for service providers 6PE / 6VPE

    Hi,
    Can anyone comment on the current state of development for IPv6 Multicast support for Service Providers who are using 6PE or 6VPE in their MPLS core.
    (6PE - SP is running MPLS in its IPv4 core, it uses IPv6-enabled provider edge (PE) routers to transport IPv6 traffic over an IPv4-only enabled core. 6PE does not support VPN,s it just provides a mechanism for tunneling IPv6 packets from ingress PE to egress PE routers)
    (6VPE - refers to a PE router capable of supporting IPv6 VPNs. A 6VPE solution can be used to provide IPv6 based layer 3 VPN services in a similar way to IPv4 based Layer 3 VPN services.)
    My understanding is that 6PE and 6VPE solution are unable to support IPv6 multicast traffic.
    Any further information on configuration, design or development work in the pipeline would be gratefully received,
    kind regards John

    Hi John,
    From our question I understand you are sking about the MVPN support for IPv6 multicast. It is actually supported on the XR platform as of now. Please refer:
    http://www.cisco.com/en/US/docs/routers/xr12000/software/xr12k_r4.0/multicast/configuration/guide/mc40mcst.html#wp2890031
    I hope this helps.
    Regards,
    Ruchir

  • Support for virtual IP in WKA list

    I am attempting to implement Coherence Grid Edition 3.5.3 Patch 7 . It's running on Sun Java 1.6.06 on a Solaris 5.10 machine (which I will call machine A1) which has an ip address 1.2.3.261. Also, there is a virtual IP address 1.2.3.260 which points to this same machine A1, as well as a hostname that maps to the virtual IP address of the machine A1.
    (Note: I have mocked up the IP addresses in this post for security reasons).
    I am using WKA due to concerns of the local network admins regarding multicast (debatable, but for now let's please assume I need to go with WKA).
    If this production machine A1 develops any problem, we can quickly switch to an alternate machine A2. The alternate machine A2 contains automatically replicated copies of all of our important sub-directories (including the coherence xml configuration files), but it does have a different IP.
    During a failure of machine A1, we would shut down machine A1, start up machine A2, and reroute the virtual IP to alternate machine A2's true IP. Machine A2 would be supplied a copy of the file-system that A1 had when A1 was shutdown.
    We would seek to not have to edit any configuration files on A2. It is difficult to maintain alternate configuration files using our current replication scheme, and any machine-specific customizations are problematic.
    Therefore, we would prefer to list the virtual IP of machines A1 and A2 in the WKA list, rather than the true IP of these machines.
    However, when I attempt to list the virtual IP in the WKA list...
                   <well-known-addresses>
                        <socket-address id="1">
                        <address>1.2.3.260</address> <!--virtual ip -->
                        <port>8088</port>
                        </socket-address>
                   </well-known-addresses>
    ... I get the error below.
    2010-09-03 12:01:51.464/1.401 Oracle Coherence GE 3.5.3/465p7 <D5> (thread=Cluster, member=n/a): Service Cluster joined the cluster with senior service member n/a
    2010-09-03 12:01:54.760/4.697 Oracle Coherence GE 3.5.3/465p7 <Error> (thread=Cluster, member=n/a): Node myhostname/1.2.3.261:8088 is not allowed to create a new cluster; WKA list: [1.2.3.260:8088]
    2010-09-03 12:01:54.760/4.697 Oracle Coherence GE 3.5.3/465p7 <D5> (thread=Cluster, member=n/a): Service Cluster left the cluster
    Exception in thread "main" java.lang.RuntimeException: Failed to start Service "Cluster" (ServiceState=SERVICE_STOPPED, STATE_ANNOUNCE)
    at com.tangosol.coherence.component.util.daemon.queueProcessor.Service.start(Service.CDB:38)
    at com.tangosol.coherence.component.util.daemon.queueProcessor.service.Grid.start(Grid.CDB:38)
    at com.tangosol.coherence.component.net.Cluster.onStart(Cluster.CDB:395)
    at com.tangosol.coherence.component.net.Cluster.start(Cluster.CDB:11)
    at com.tangosol.coherence.component.util.SafeCluster.startCluster(SafeCluster.CDB:3)
    at com.tangosol.coherence.component.util.SafeCluster.restartCluster(SafeCluster.CDB:7)
    at com.tangosol.coherence.component.util.SafeCluster.ensureRunningCluster(SafeCluster.CDB:27)
    at com.tangosol.coherence.component.util.SafeCluster.start(SafeCluster.CDB:2)
    at com.tangosol.net.CacheFactory.ensureCluster(CacheFactory.java:998)
    at com.tangosol.net.DefaultConfigurableCacheFactory.ensureService(DefaultConfigurableCacheFactory.java:905)
    at com.tangosol.net.DefaultCacheServer.start(DefaultCacheServer.java:139)
    at com.tangosol.net.DefaultCacheServer.main(DefaultCacheServer.java:60)
    2010-09-03 12:01:54.763/4.700 Oracle Coherence GE 3.5.3/465p7 <Error> (thread=main, member=n/a): Error while starting cluster: java.lang.RuntimeException: Failed to start Service "Cluster" (ServiceState=SERVICE_STOPPED, STATE_ANNOUNCE)
    at com.tangosol.coherence.component.util.daemon.queueProcessor.Service.start(Service.CDB:38)
    at com.tangosol.coherence.component.util.daemon.queueProcessor.service.Grid.start(Grid.CDB:38)
    at com.tangosol.coherence.component.net.Cluster.onStart(Cluster.CDB:395)
    at com.tangosol.coherence.component.net.Cluster.start(Cluster.CDB:11)
    What exactly is being checked here? Does each Coherence instance expect to see it's own IP listed in the WKA list, and refuse to run if it can't find it's own IP on the list?
    Is the instance detecting it's own IP via an operating system call, or is there some way I can influence the instance's sense of what IP it is running on?
    Is there any advice for supporting this kind of virtual IP scenario?
    I have tried listing the hostname with no better success, because the hostname points to the virtual IP, and therefore has the same effect as listing the virtual IP.
    As a workaround, I have altered the WKA list to list of the true IPs of both machines...
                   <well-known-addresses>
                        <socket-address id="1">
                        <address>1.2.3.261</address> <!-- A1 -->
                        <port>8088</port>
                        </socket-address>
                        <socket-address id="2">
                        <address>1.2.3.262</address> <!-- A2 -->
                        <port>8088</port>
                        </socket-address>
                   </well-known-addresses>
    ... even though both machines will never be up and running at the same time. This workaround avoids the error and the cluster appears to come up. I am not sure if there's any ill effect that at any given time one of these two IPs will never be up and running.
    Despite my workaround, true support for virtual IPs would be superior; listing all the true non-virtual IPs in the WKA list means re-editing the list as the hardware changes.
    Thanks for any advice!
    P.S. I tried the above with Coherence 3.5.2 with the same results.
    Edited by: user11114413 on Sep 3, 2010 11:45 AM

    Hi user11114413,
    The issue you are seeing actually has little to do with VIP, and more to do with there being multiple IP addresses for us to choose from on your box. For such multi-IP boxes, you'll want to tell us the IP to use, and in your case you want to tell as a VIP. This can be done either by editing your operational configuration file, and including an <address> element within the <unicast-listener> element, or via the tangosol.coherence.localhost system property. For example:
    <unicast-listener>
        <well-known-addresses>
            <socket-address id="1">
                <address>1.2.3.260</address> <!--virtual ip -->
                <port>8088</port>
            </socket-address>
        </well-known-addresses>
        <address>1.2.3.260</address> <!--virtual ip -->
        <port>8088</port>
    </unicast-listener>or
    java ... -Dtangosol.coherence.localhost=1.2.3.260If you are using the same operational configuration on all nodes in your cluster then the system property approach is likely preferable, and would only be necessary on the two machines sharing the VIP.
    As for using VIP or an extended WKA list, the choice is yours, either will work. If you do go the VIP route, it would obviously be a very bad idea to simultaneously use the same VIP and port at the same time from the two machines.
    thanks,
    Mark
    Oracle Coherence

  • Chat room using multicast socket

    hi-
    i have a chat room based on multicast socket with a SWING GUI interface. i want group members to be able to establish a shared secret(bases on extended n-party diffie-hellman algorithm) to encrypt all messages exchanged . Re-keying happens upon member join and leave. In order to do key agreement i need to identify the number of subscribers in the multicast chat room all time. i am having trouble setting up a centralized counter to keep track of distributed users 'cause each time a user joins the chat he or she invokes a different copy of the chat program(command line usage: java chatroom <user name>). please help me setting up a counter to count the subscriber and identify joins and leaves.... my main questin is where within the program to set up a counter variable like this to keep track of distributed users? please help...thanks!

    thanks for your reply... ummm yeah securing a chat room based on multicast poses many problems mainly because of the lack of a chat server. i really haven't gotten any of them sorted out. well the only reason to use encryption is to provide perfect forward secrecy and backward secrecy, meaning a user who just joined the chat room can't decipher any previous session of conversation prior to his join and a user who just left the chat room can't use the group session key he had to decrypt any future conversation. Access control and authorization is ignored. User can join the chat room without permission of the existing members.
    yes a flat hierarchy is assumed(all group members are treated equally....no fixed member is given privilege to generate and distribute keys). However, for the key agreement protocol to take place the last joined member is chosen as a group leader and is responsible of re-keying his share in the previous group session key. The newly joined member adds his share and everybody computes the new group session key based on Diffie-Hellman. This group leader role floats...
    you are right... without being able to detect joins/leaves and the correct order of those joins and leaves, none of these can be realized.
    Can i chain a separate server just to keep track of membership changes?

  • Using a 3rd party router for Multicast

    Hi all,
    There’s a lot of feedback on this board about using third party routers with Multicast, so we’ve decided to put this information all in the one place for you.
    NOTE: the workarounds below haven’t been tested by BT as we do not support 3rd party routers and we do not endorse any of them. Our recommended router remains the Home Hub.
    With the above statement in mind, we know that a lot of you do choose to use other routers.  The information contained here has come from fellow customers who have given their time to share this information in good faith. Thanks to all of the forum members who have helped make this information available to our community it is a great example of the wealth of information that a community can provide and we hope this encourages users to come back and visit us in the future.
    A special mention goes to walkerx who has posted and prompted a lot of the provided information.
    Hub configurations in alphabetical order:
    Apple Airport Extreme
    Put your Airport Extreme into Bridge Mode and turn the Home Hub's wireless off.
    [From MartinH's post]
    ASUS RT-N66U
    You must configure 'Enable VPN + DHCP Connection' to 'No' under the WAN option.
    Settings used were:
    - Have router on the latest firmware: 3.0.0.4.374.130
    - Use the following settings in LAN > IPTV:
    - 'Select ISP Profile' = None
    - 'Choose IPTV STB Port' = None
    - 'Use DHCP routes' = Microsoft
    - 'Enable multicast routing (IGMP Proxy) = Enable
    - 'Enable efficient multicast forwarding (IGMP Snooping) = Enable
    - 'UDB Proxy (Udpxy) = 0
    [From sepph's post]
    Billion 7800DXL
    Router has been reported to work.
    [From walkerx's post]
    Billion 7800N
    Requires you to add another profile (Pure Bridge) to the EWAN port along with the PPPoE profile. Save settings & restart. Also enable IGMP proxy & snooping.
    [TimCurtis' post]
    DLink Dir 825
    If enable multicast you can see the on-demand players but get an IPC6023 error when viewing the test channel (this means poor internet channel quality). This error message comes up even though it works if use the Home Hub 4
    [walkerx's post]
    Netgear R6300
    Netgear R6300, but with the Home Hub 3.0 and 500Mbit Powerline adapters in the picture.
    Modem -> HH3 -> R6300 -> Powerline -> 2 x Youview Boxes on other Powerlines.
    To do this, configure the Home Hub 3.0 as 192.168.1.1, then disable its wireless and DHCP. Make sure that NAT and UPNP were enabled, and then set it to use the address 192.168.1.254 as a DMZ server.
    Then configure the R6300 as the address 192.168.0.1, using the WAN IP address of 192.168.1.254, with 192.168.1.1 as the gateway and DNS server. The R6300 is then connected via WAN port to the HH3 Gigabit port.
    In the R6300 settings switch on IGMP. 
    The above settings allow both YouView boxes to use on demand content and different streaming channels simultaneously, as well as giving the full features of the R6300 such as AC1750 wireless, network printing, and DLNA
    [wigglr's post]
    TP-Link AC1750
    Router has been reported to work.
    [zarf2007's post]
    TP-Link Archer C7
    Router has been reported to work.
    [HappySlayerUK's post]
    TP-Link TL-WR1043ND
    No configuration needed, plug and play.
    [walkerx's post]
    TP-Link WDR4300 N750
    Router has been reported to work.
    [aseymour's post]
    TP-Link TL-WDR4900 N900
    Router has been reported to work, plug and play.
    [cactusbob's post]
    TP-Link routers in general
    How to configure Multicast on TP-Link routers (from the TP-Link website).
    One of our posters also found the following:
    He found that your router must be able to do the following for Multicast:
    For an end user connected via Openreach GEA (FTTC and FTTH)
    • The Residential Gateway will support:
    – IPoE for multicast traffic and PPPoE for BB traffic;
    – VLAN tag ID of 0 or no VLAN tag ID for multicast and BB traffic;
    – Fork IGMP requests up multicast and BB paths.
    For an end user connected to an MSAN (WBC copper)
    • The Residential Gateway will support:
    – A dual VC architecture;
    – Accept TV Connect multicast traffic on ATM VP/VC 0/35 with IPoE and broadband traffic on ATM VP/VC 0/38 with PPPoE;
    – Fork IGMP requests up multicast and broadband paths.
    IGMP should v3 and will be in range from 225.0.0.0 to 239.255.255.255 
    [walkerx's post]
    List of routers that do not appear to work:
    Draytek 2750n
    Linksys EA4500
    linksys EA6300
    Netgear AC6300
    [From Red_Snow's post]
    If you use a router that’s not listed here, do a search on the YouView from BT board to see if advice has been posted elsewhere. If it hasn’t, do post your question.
    Thanks,
    Stephanie
    Stephanie
    BTCare Community Manager
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    Thanks for confirming that quails.
    Cheers
    David
    BTCare Community Mod
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  • No Adobe support for CC Team Members if you have installed Parallels on your Mac

    No Adobe support for CC Team Members if you have installed Parallels on your Mac
    First let me make it clear my iMac is running native OS X 10.8.5 and all Adobe Creative Cloud Apps are install on the iMac running natively in the OS X system environment. I only have Parallels Desktop 8 for Mac installed to run Microsoft Office software in Windows 7 when needed (because PowerPoint for Mac sucks big time compared to the PC version)… absolutely no Adobe CC Apps have been installed on the Parallels virtual PC environment.
    I have been having problems with Creative Cloud Desktop not updating so I uninstalled it and tried to install the latest version from Adobe. I then get the following error:
    We've encountered the following issues:
    There seems to be a problem accessing a critical file/directory during download. For troubleshooting tips. please visit our customer support page. (Error code: 204)
    [retry] [cancel]
    This has happened all last week. Because we have been so busy at work I waited until the weekend to contact the 24/7 chat support.
    This was going well. I was sharing my desktop with the agent who was adjusting the permissions of some folder. The problem came when he launched chrome on Parallels and not on the MAC and tried to install the PC EXE version of CC desktop. When I pointed this out to the Agent he instantly stop the screen share and stated in the chat box that virtual computers are not supported and I must find my own solution without giving me an opportunity to explain.
    Every time I tried to start the chat again I was cut-off while trying to explain that Adobe CC was running natively under a native OS X and the Virtual PC was a separate to this
    Only after my 4th attempt (having per cut an pasted my arguement into the chat box) did a get any further. The Agent refused to continue to try and fix my problem but did say the Adobe engineers are aware of the "204" error
    Has anyone else had this "204" error installing Creative Cloud Desktop or can  direct me to a solution it would be much appreciated

    Unfortunately I am still getting the 204 error
    I download the Creative Cloud Desktop App at home and brought it into work to install — which failed
    I then tried to install the same file on the only Mac in the office not on Creative Cloud and it installed with out any problems
    I then tried plugging my iMac into the same ethernet socket incase it was a problem with the ethernet socket. No luck it still had the 204 error
    These are the Adobe download log files which show errors but they me nothing to me
    DLM.log
    07/01/14 08:15:48:723 | [INFO] |  |  |  |  |  |  | 1743186 | *******************start of Download****************
    07/01/14 08:15:48:723 | [INFO] |  |  |  |  |  |  | 1743186 | GDE Version is 2.0.0.13 (BuildVersion: 2.0; BuildDate: Thu Jan 09 2014 20:38:50 )
    07/01/14 08:15:48:724 | [INFO] |  |  |  |  |  |  | 1743186 | The file to be downloaded is https://prod-rel-ffc.oobesaas.adobe.com/adobe-ffc-external/core/v1/applications?name=Creat iveCloud&name=CCLBS&osVersion=10.8.5&platform=osx10
    07/01/14 08:15:48:724 | [INFO] |  |  |  |  |  |  | 1743186 | Going to download the file at /tmp/B58E0DB2-C6AD-4480-B614-874A46E27582/applications.xml
    07/01/14 08:15:48:825 | [INFO] |  |  |  |  |  |  | 1743186 | Preference: Client has set the preference for single stream download
    07/01/14 08:15:50:036 | [INFO] |  |  |  |  |  |  | 1743190 | **File download complete.**
    07/01/14 08:15:50:537 | [INFO] |  |  |  |  |  |  | 1743182 | *******************End****************
    07/01/14 08:15:50:690 | [INFO] |  |  |  |  |  |  | 1743203 | *******************start of Download****************
    07/01/14 08:15:50:690 | [INFO] |  |  |  |  |  |  | 1743203 | GDE Version is 2.0.0.13 (BuildVersion: 2.0; BuildDate: Thu Jan 09 2014 20:38:50 )
    07/01/14 08:15:50:690 | [INFO] |  |  |  |  |  |  | 1743203 | The file to be downloaded is https://ccmdls.adobe.com/AdobeProducts/KCCC/1/osx10/packages/ACCC_2_6_PDIMPackage_393/mani fest.xml
    07/01/14 08:15:50:690 | [INFO] |  |  |  |  |  |  | 1743203 | Going to download the file at /manifest.xml
    07/01/14 08:15:50:791 | [INFO] |  |  |  |  |  |  | 1743203 | Preference: Client has set the preference for single stream download
    07/01/14 08:15:51:900 | [ERROR] |  |  |  |  |  |  | 1743206 | An error has occurred while renaming the temporary named downloaded file.
    07/01/14 08:15:52:213 | [INFO] |  |  |  |  |  |  | 1743182 | *******************End****************
    LBS.log
    07/01/14 08:15:43:357 | [INFO] |  | ACC | LBS | ApplicationFacade |  |  | 1742865 | ****************Starting LBS workflow*******************
    07/01/14 08:15:43:361 | [INFO] |  | Download | LBS | ProductInfo |  |  | 1742865 | Product Sap Code not specified in the product information file
    07/01/14 08:15:43:361 | [INFO] |  | Download | LBS | ProductInfo |  |  | 1742865 | Applet Version not specified in the product information file
    07/01/14 08:15:43:361 | [INFO] |  | Download | LBS | ProductInfo |  |  | 1742865 | Applet ID not specified in the product information file
    07/01/14 08:15:43:361 | [INFO] |  | Download | LBS | ProductInfo |  |  | 1742865 | Product locale not specified in the product information file
    07/01/14 08:15:43:362 | [INFO] |  | Download | LBS | ProductInfo |  |  | 1742865 | Product name not specified in the product information file
    07/01/14 08:15:43:362 | [INFO] |  | Download | LBS | LBSUtils |  |  | 1742865 | Launching LBS in elevated mode
    07/01/14 08:15:48:442 | [INFO] |  | ACC | LBS | ApplicationFacade |  |  | 1743172 | ****************Starting LBS workflow*******************
    07/01/14 08:15:48:446 | [INFO] |  | ACC | LBS | WorkflowManager |  |  | 1743172 | LBS launched in LEGACY mode
    07/01/14 08:15:48:524 | [INFO] |  | Download | LBS | SystemCheck |  |  | 1743182 | System OS Version - major = 10, minor = 8, bugFix = 5
    07/01/14 08:15:48:524 | [INFO] |  | ACC | LBS | WorkflowManager |  |  | 1743182 | ACCC System requirements check passed
    07/01/14 08:15:48:546 | [INFO] |  | Download | LBS | ProductInfo |  |  | 1743182 | Product Sap Code not specified in the product information file
    07/01/14 08:15:48:546 | [INFO] |  | Download | LBS | ProductInfo |  |  | 1743182 | Applet Version not specified in the product information file
    07/01/14 08:15:48:546 | [INFO] |  | Download | LBS | ProductInfo |  |  | 1743182 | Applet ID not specified in the product information file
    07/01/14 08:15:48:547 | [INFO] |  | Download | LBS | ProductInfo |  |  | 1743182 | Product locale not specified in the product information file
    07/01/14 08:15:48:547 | [INFO] |  | Download | LBS | ProductInfo |  |  | 1743182 | Product name not specified in the product information file
    07/01/14 08:15:48:547 | [INFO] |  | ACC | LBS | WorkflowManager |  |  | 1743182 | Bootstrap LBS is successful
    07/01/14 08:15:48:565 | [INFO] |  | ACC | LBS | WorkflowManager |  |  | 1743182 | Bootstrapper Lock acquired
    07/01/14 08:15:48:583 | [INFO] |  | ACC | LBS | WorkflowManager |  |  | 1743182 | LBS Lock acquired
    07/01/14 08:15:48:604 | [INFO] |  | ACC | LBS | WorkflowManager |  |  | 1743182 | Deployment lock check passed
    07/01/14 08:15:48:622 | [INFO] |  | ACC | LBS | WorkflowManager |  |  | 1743182 | The resolved URL for package service is https://prod-rel-ffc.oobesaas.adobe.com/adobe-ffc-external/core/v1/applications?name=Creat iveCloud&name=CCLBS&osVersion=10.8.5&platform=osx10
    07/01/14 08:15:50:538 | [INFO] |  | ACC | LBS | WorkflowManager |  |  | 1743182 | Successfully downloaded application xml at path /tmp/B58E0DB2-C6AD-4480-B614-874A46E27582/applications.xml
    07/01/14 08:15:50:588 | [ERROR] |  | ACC | LBS | WorkflowManager |  | FileUtils | 1743182 | Error Failed open the dylib /Applications/Utilities/Adobe Creative Cloud/utils/AdobePIM.dylib while getting its version
    07/01/14 08:15:50:588 | [ERROR] |  | ACC | LBS | WorkflowManager |  |  | 1743182 | Failed to get the PIM version from location: /Applications/Utilities/Adobe Creative Cloud/utils/AdobePIM.dylib
    07/01/14 08:15:50:588 | [ERROR] |  | ACC | LBS | PDM | PackageDownloadManager |  | 1743182 | Failed to create folder at temp location for download operations
    07/01/14 08:15:51:900 | [WARN] |  | ACC | LBS | PDM | PDMWorkflowManager |  | 1743206 | A user retryable error has occured while downloading the file. errotType = -100 extendedErrorCode = 0
    07/01/14 08:15:51:910 | [WARN] |  | ACC | LBS | PDM | PackageDownloadManager |  | 1743203 | Manifest file could not be downloaded
    07/01/14 08:15:51:910 | [INFO] |  | ACC | LBS | PDM |  |  | 1743203 | File already exist. This should not happen because packages is downloaded in new GUID folder and file is send by client so should not be there already.
    07/01/14 08:15:52:213 | [ERROR] |  | ACC | LBS | WorkflowManager |  |  | 1743182 | Failed in DOWNLOAD PIM
    07/01/14 08:15:57:938 | [INFO] |  | Download | LBS | ETS |  |  | 1743172 | Waiting for the async thread to get the task completed
    07/01/14 08:15:57:939 | [INFO] |  | Download | LBS | ETS |  |  | 1743185 | Async thread is completed. Now exiting from function.
    07/01/14 08:15:57:949 | [INFO] |  | ACC | LBS | ApplicationFacade |  |  | 1743172 | ACC installation end with exit code: 204
    07/01/14 08:15:57:949 | [INFO] |  | ACC | LBS | ApplicationFacade |  |  | 1743172 | ****************Closing LBS workflow*******************
    07/01/14 08:15:57:959 | [INFO] |  | ACC | LBS | ApplicationFacade |  |  | 1742865 | ****************Closing LBS workflow*******************

  • Multicast socket receive error: java.io.InterruptedIOException: Receive timed out

    Hello
              We have One Admin and 2 Mananged server on same machine.
              It is a quad server.
              With 2 NICs.
              Managed Server is giving this error.
              <Jul 22, 2002 10:55:54 AM CDT> <Error> <Cluster> <Multicast socket
              receive error
              : java.io.InterruptedIOException: Receive timed out
              java.io.InterruptedIOException: Receive timed out
              at java.net.PlainDatagramSocketImpl.receive(Native Method)
              at java.net.PlainDatagramSocketImpl.receive(PlainDatagramSocketImpl.java
              :90)
              at java.net.DatagramSocket.receive(DatagramSocket.java:404)
              at weblogic.cluster.FragmentSocket.receive(FragmentSocket.java:145)
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              be working. (both windows shows send/receive).
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              thanks
              

    that is right.
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              thanks
              Kumar Allamraju <[email protected]> wrote in message news:<[email protected]>...
              > I have seen this error once when the multicastddress is not properly setup.
              > Can you try a different multicastAddress and see if that makes any difference?
              >
              >
              > zevit wrote:
              >
              > > Hello
              > >
              > > We have One Admin and 2 Mananged server on same machine.
              > > It is a quad server.
              > > With 2 NICs.
              > >
              > > Managed Server is giving this error.
              > >
              > > <Jul 22, 2002 10:55:54 AM CDT> <Error> <Cluster> <Multicast socket
              > > receive error
              > > : java.io.InterruptedIOException: Receive timed out
              > > java.io.InterruptedIOException: Receive timed out
              > > at java.net.PlainDatagramSocketImpl.receive(Native Method)
              > > at java.net.PlainDatagramSocketImpl.receive(PlainDatagramSocketImpl.java
              > > :90)
              > > at java.net.DatagramSocket.receive(DatagramSocket.java:404)
              > > at weblogic.cluster.FragmentSocket.receive(FragmentSocket.java:145)
              > > at weblogic.cluster.MulticastManager.execute(MulticastManager.java:298)
              > > at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
              > > at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
              > > >
              > >
              > > Also on weblogic console
              > >
              > > Cluster - > Monitoring - > Monitor Server Participation Panel
              > > shows that both our managed servers are part of the cluster..
              > > But only Sent Frames has data.. Receive frame does not seem to be
              > > working.
              > >
              > > I tried MultiCastTest Utility in 2 different dos prompts and seems to
              > > be working. (both windows shows send/receive).
              > > Though i am not sure if it will work for a quad / 2NIC machine..
              > > As utility does not take IP address of the server.
              > >
              > > thanks
              

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    Hi,
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              at
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    May i presume that your cluster is configured on a shared file system?.
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              Cameron Purdy wrote:
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              >
              > --
              >
              > Cameron Purdy
              > http://www.tangosol.com
              >
              > "Tom Gan" <[email protected]> wrote in message
              > news:[email protected]...
              > > Hi,
              > > I need some help.
              > >
              > > Product=weblogic5.1.0
              > > Revision=(Release Level)=
              > > Problem Description=
              > > I am doing cluster of weblogic server, I have no problem to set up the
              > > cluster and to run servlet and EJB examples.
              > > However, on my command line for startcluster I got a lot of message as
              > > followed:
              > > Fri Aug 18 11:31:44 EDT 2000:<E> <MulticastSocket> Multicast socket
              > receive
              > > error: java.lang.RuntimeException: I/O error opening JAR file from
              > > file:/D:/weblogic/mycluster/server86/tmp_deployments/ejbjar-17327.jar
              > > java.util.zip.ZipException: error in opening zip file
              > > at java.util.zip.ZipFile.open(Native Method)
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              > > at java.util.zip.ZipFile.<init>(ZipFile.java, Compiled Code)
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              > > Compiled Code)
              > > at
              > >
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              > > .java, Compiled Code)
              > > at
              > >
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              > > , Compiled Code)
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              > >
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              > > jectInputStreamBase.java, Compiled Co
              > > de)
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              > >
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              > > treamBase.java, Compiled Code)
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              > >
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              > > tStreamBase.java, Compiled Code)
              > > at
              > >
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              > > at
              > >
              > weblogic.common.internal.WLObjectInputStreamBase.readObjectWL(WLObjectInputS
              > > treamBase.java, Compiled Code)
              > > at
              > >
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              > > StreamBase.java, Compiled Code)
              > > at weblogic.cluster.StateDump.readObject(StateDump.java, Compiled
              > > Code)
              > > at
              > >
              > weblogic.common.internal.WLObjectInputStreamBase.readPublicSerializable(WLOb
              > > jectInputStreamBase.java, Compiled Co
              > > de)
              > > at
              > >
              > weblogic.common.internal.WLObjectInputStreamBase.readLeftover(WLObjectInputS
              > > treamBase.java, Compiled Code)
              > > at
              > >
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              > > tStreamBase.java, Compiled Code)
              > > at
              > >
              > weblogic.common.internal.WLObjectInputStreamBase.readObject(WLObjectInputStr
              > > eamBase.java, Compiled Code)
              > > at
              > >
              > weblogic.common.internal.WLObjectInputStreamBase.readObjectWL(WLObjectInputS
              > > treamBase.java, Compiled Code)
              > > at weblogic.cluster.TMSocket.execute(TMSocket.java, Compiled Code)
              > > at weblogic.kernel.ExecuteThread.run(ExecuteThread.java, Compiled
              > > Code)
              > >
              > > The message freshed about every 20 seconds.
              > >
              > > Another question, I used a iplanet web server as a proxy server with a
              > > cluster of two weblogic servers pluged in, although I set
              > > weblogic.properties to round-robin, however, when I run a fibonacci
              > servlet,
              > > it does not do the round-robin. It always go to one machine for a lot of
              > > times. Any idea?
              > > Thank you for your help.
              > > Tom
              > >
              > >
              > >
              

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    Tom

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