I have some code demo using multi-streaming, but it is not run right.I 
attach my code send file in this mail. I using this code from sctp_test, 
but i don't know why it error.
I use sinfo->sinfo_stream = 1; and when send one chunk I change stream :

  if(stream==1) stream=2;
  if(stream==2)  stream=1;

But capture packet with Wireshark I see SID is always 1, I send packet 
is order, using multi-homing.
All different functions run ok.I don't know why SID don't change.I read 
this darft of socket API SCTP in folder doc of LKSCTP, but I don't 
understand why I write code like sctp_test but sctp_test run ok.