Hi Marcelo Thank you for your help. Regards Omar AIT AMRANE ============================================================== ----- Mail original ----- De: "Marcelo Ricardo Leitner" <marcelo.leitner@xxxxxxxxx> À: "o" <o.evistel@xxxxxxx> Cc: oaitamrane@xxxxxxxxxxxxxxxxxxxxx, linux-sctp@xxxxxxxxxxxxxxx Envoyé: Jeudi 7 Juillet 2022 15:39:26 Objet: Re: Linux SCTP associations failure handlig Hi oaitamrane, On Wed, Jul 06, 2022 at 01:19:20PM -0000, oaitamrane@xxxxxxxxxxxxxxxxxxxxx wrote: > > > Dear Marcelo > > I would like to know if there is a way after association failure (SCTP_COMM_LOST event treceived) to retrieve UNSENT to peers and UNACKNOWLEDGED by peers Data Chunks for retransmission over an alternate association? > I am using RHEL8.4 and sockets are set in NON BLOCKING mode. > I have set the sctp_event_subscribe structure as follows: > > memset(&sctp_events, 0, sizeof(sctp_events)); > > sctp_events.sctp_data_io_event = 1; > sctp_events.sctp_association_event = 1; > sctp_events.sctp_address_event = 1; > sctp_events.sctp_peer_error_event = 1; > sctp_events.sctp_adaptation_layer_event = 1; > sctp_events.sctp_shutdown_event = 1; > sctp_events.sctp_partial_delivery_event = 1; > sctp_events.sctp_send_failure_event_event = 1; > > ret = setsockopt(sock_fd, IPPROTO_SCTP, SCTP_EVENTS, > &sctp_events, sizeof(sctp_events)); My understanding is that you should be getting it via sctp_send_failure_event_event above, detailed in rfc6458#section-6.1.11. When SCTP tears down an association, it marks the chunks in outqueue as failed in __sctp_outq_teardown(), which then sctp_datamsg_destroy() ends up picking up and sending notifications to the application. I didn't check this on RHEL 8.4, though, but I believe it has support for this RFC as well. If you have the event as above, it should be there. > > Can you please tell me if you a member of the dev team who can help me. +Cc linux-sctp here to have a broader reach. We don't really use sourceforge anymore. :-) Cheers, Marcelo > > Regards > Omar AIT AMRANE > > - - - - - - - - - - - - - - - - - - - - - > > This message was sent to you via the SourceForge web mail form. > You may reply to this message directly, or at https://sourceforge.net/u/oaitamrane/profile/send_message
