[sctp-dev] Problem with SCTP_SET_PEER_PRIMARY_ADDR option

[Mehmet Aslan]

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 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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.openjdk.java.net/pipermail/sctp-dev/attachments/20101202/fceb5d65/attachment.html