> On 7. Jun 2020, at 16:04, David Laight <David.Laight@xxxxxxxxxx> wrote: > > From: Michael Tuexen >> Sent: 07 June 2020 13:48 > ... >> If you killed the peer, I would assume that there is an SCTP message containing an >> ABORT chunk in the wire. Is that true? If that is true, you could subscribe to >> SCTP_ASSOC_CHANGE notification, which should tell you. > > Actually for TCP-style 1-1 connections you must subscribe to > SCTP_ASSOC_CHANGE. I guess you are referring to UDP (1-to-many) style sockets. For 1-to-1 style sockets, the normal error handling should work, like it does for TCP (returning -1 in a system call and errno being ETIMEDOUT or ECONNRESET). At least this is the way intended by the specification and I think Linux does it that way. Best regards Michael > > If you don't and the far end is killed (eg kernel crash) and > restarts with the same port number pair then you get no > indication that everything has disconnected and reconnected. > > David > > - > Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK > Registration No: 1397386 (Wales) >
