BundCookieAckAndData.seq - COOKIE-ACK chunk is received bundled with DATA chunk as the first chunk
To check that if COOKIE-ACK received bundled with data chunks as first
chunk then the endpoint should accept this message.
./BundCookieAckAndData.seq [-tooloption ...] -pkt ./BundCookieAckAndData.def
-tooloption : v6eval tool option
See Also: ../common/STD_PKT_COMMON.def
../common/SCTP_COMMON.def
Association not established between endpoint A and B. Also arrange the
data in endpoint A such that COOKIE-ACK chunk bundled with DATA chunk
is sent to endpoint B.
Endpoint A Endpoint B ULP
(ESTABLISHED) (ESTABLISHED)
<----- Associate
<----------------- INIT
INIT-ACK ----------------->
<----------------- COOKIE-ECHO
COOKIE-ACK ----------------->
(data chunk multiplexed)
<----------------- SACK
TEST DESCRIPTION:
1. Attempt to initiate an association from endpoint B to endpoint A.
Send COOKIE-ACK message from endpoint A bundled with data chunks
with COOKIE-ACK as the first chunk. In response to COOKIE-ECHO.
2. Check A: COOKIE-ACK is accepted and association is established.
3. Check B: SACK is received at endpoint A.
None
RFC 4960
6.10. Bundling
An endpoint bundles chunks by simply including multiple chunks in one
outbound SCTP packet. The total size of the resultant IP datagram,
including the SCTP packet and IP headers, MUST be less that or equal
to the current Path MTU.
If its peer endpoint is multi-homed, the sending endpoint shall
choose a size no larger than the latest MTU of the current primary
path.
When bundling control chunks with DATA chunks, an endpoint MUST place
control chunks first in the outbound SCTP packet. The transmitter
MUST transmit DATA chunks within an SCTP packet in increasing order
of TSN.
Note: Since control chunks must be placed first in a packet and since
DATA chunks must be transmitted before SHUTDOWN or SHUTDOWN ACK
chunks, DATA chunks cannot be bundled with SHUTDOWN or SHUTDOWN ACK
chunks.
Partial chunks MUST NOT be placed in an SCTP packet. A partial chunk
is a chunk that is not completely contained in the SCTP packet; i.e.,
the SCTP packet is too short to contain all the bytes of the chunk as
indicated by the chunk length.
An endpoint MUST process received chunks in their order in the
packet. The receiver uses the Chunk Length field to determine the
end of a chunk and beginning of the next chunk taking account of the
fact that all chunks end on a 4-byte boundary. If the receiver
detects a partial chunk, it MUST drop the chunk.
An endpoint MUST NOT bundle INIT, INIT ACK, or SHUTDOWN COMPLETE with
any other chunks.