SCTP Multihoming

Question

I\'ve been developing this simple client - server application with C where the client is just sending random data to the server and the server just listens to what the clien

Answer 1

I have never tried SCTP but according to this site it supports two models.

one-to-one style and one-to-many style.

As far as I understand multihoming works for one-to-one style.

In order to open a one-to-one style socket you need a call like :

connSock = socket( AF_INET, SOCK_STREAM, IPPROTO_SCTP );

Note that SOCK_STREAM is different than your SOCK_SEQPACKET

When you do

sock = socket(AF_INET, SOCK_SEQPACKET, IPPROTO_SCTP)

it seems to open one-to-many style socket which I could not understand if it supports multihoming or not.

So try your code with SOCK_STREAM parameter.

Also here is an example that uses SOCK_STREAM.