[sctp-dev] Problem with SCTP_SET_PEER_PRIMARY_ADDR option

[Chris Hegarty]

Sorry for the delay, but I'm really busy at the moment. I will look into 
this and get back to you.

-Chris.

Mehmet Aslan wrote:
> Hi All,
> Actually I asked the following question in a reply message to the prior 
> thread. Maybe because this, it did not draw any attention. The problem 
> still exists and I can not go forward and I am not sure if it is a 
> setting issue on SCTP side or if it is a problem in my setup. I will try 
> my chance in a new thread hoping that I can get some useful response, as 
> it happened in the previous thread.
> Currently,
> 
> net.sctp.addip_noauth_enable = 1
> net.sctp.addip_enable = 1
> 
> Now, I can bind new addresses to a connected association or unbind any 
> of local addresses from it. However I can not set peer primary address 
> using related setOption() method.
> The simple scenario and the case;
> Server                                         Client
> 192.168.1.25 :3456                      192.168.1.25   :6060
>                                                   192.168.1.133 :6060
> 
> I would like to change peer primary address from ... .25:6060 to ... 
> .133:6060 instructing from the client side (using 
> setOption(SCTP_SET_PEER_PRIMARY_ADDR, sockAddr). When I applied the 
> instruction, I get a java.net <http://java.net/> exception. Here are the 
> related code parts:
> 
> Server:
> ...
> ssc.getOption(SCTP_PRIMARY_ADDR); // This gives out ... .25 :6060  as 
> the primary addr
> 
> Client:
> ...
> // I want the server to use the other address (... .133 :6060) as the 
> primary address
> // and I want to make this change by means of an instruction from client 
> side. I use the code below;
> sockAddr = new InetSocketAddress("192.168.1.133", 6060);
> sc.setOption(SCTP_SET_PEER_PRIMARY_ADDR, sockAddr);
> ....
> 
> In the output window of client, at the line of setOption() method I get 
> the following exception and no change in the primary address:
> "java.net.SocketException: Cannot assign requested address"
> 
> I will appreciate much if an explanation is posted about how I can solve 
> this issue.
> Additionally, is the following setting enough to enable Dynamic Address 
> Reconfiguration extension completely?
> 
> net.sctp.addip_noauth_enable = 1
> net.sctp.addip_enable = 1
> 
> Thanks in advance,
> regards,
> MehmetAslan