[jira] Commented: (JCS-46) Allow TTL to be overridden for UDPDiscoverySender

    [ https://issues.apache.org/jira/browse/JCS-46?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12619095#action_12619095 ] 

Aaron Smuts commented on JCS-46:
--------------------------------

We will have to add this to the  UDPDiscoverySender after we create the socket.

This will require changing the constructor to take in another variable.

    public UDPDiscoverySender( String host, int port )
        throws IOException
    {
        try
        {
            m_localSocket = new MulticastSocket();

> Allow TTL to be overridden for UDPDiscoverySender
> -------------------------------------------------
>
>                 Key: JCS-46
>                 URL: https://issues.apache.org/jira/browse/JCS-46
>             Project: JCS
>          Issue Type: Improvement
>          Components: TCP Lateral Cache
>            Reporter: Lux Matic
>            Assignee: Aaron Smuts
>            Priority: Minor
>
> MulticastSocket defaults TTL for DatagramPackets to 1.  This limits usefulness of the feature.  There should be a way to override the TTL through configuration - i.e.: jcs.auxiliary.LTCP.attributes.UdpTTL=4
> Assuming m_ttlOverride is available as a member variable - the change boils down to setting the ttl before the packet is sent - something like:
>             m_localSocket.setTimeToLive(m_ttlOverride);
>             m_localSocket.send( packet );
> See MulticastSocket for more details.

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