Maybe a selinux issue? Just a wild guess. == Rene
-----Original Message----- From: users-boun...@kannel.org [mailto:users-boun...@kannel.org] On Behalf Of Bogdan Irimia Sent: Monday, 06 September, 2010 13:27 To: Nikos Balkanas; users@kannel.org Subject: Re: Issue with UCP - reconnection problem Dear Nikos Thank you for your reply. As I stated in the message, there is not a number of sockets issue, but an issue regarding the state of the socket. The state the socket is in is SYN SENT, and even if SYN ACK message is sent back by SMSC (checket with Wireshark/tcpdump), Kannel does not send ACK. So it's not about the limits in ulimit.conf, it's an issue at socket protocol implementation. Netstat gives the following output (not wc, of course): tcp 0 1 93.113.15.3:2878 217.10.194.192:x11-1 SYN_SENT Regards, Bogdan -------------------------------------------------- From: "Nikos Balkanas" <nbalka...@gmail.com> Sent: Monday, September 06, 2010 2:20 PM To: "Bogdan Irimia" <bog...@digitair.ro>; <users@kannel.org> Subject: Re: Issue with UCP - reconnection problem > Hi, > > I remember replying to you again. > > 1) No, it is not normal to close and open connections every time you have > to send an SMS. In fact it wastes a lot of resources (sockets and CPU). > Talk to VF, it is their issue. > > 2) Type: > > netstat -a | grep <vodafone-ip> | wc -l > > when having a problem. See if you are running low on sockets. See in what > state they are left. If they are not closing sockets properly talk again > to VF. In linux you can increase limit in ulimit.conf. In solaris use ndi. > This (limits) is not a kannel issue but an OS one. > > Finally if they don't clean up their act, try to restart kannel every 24 > hrs from cron. > > I hope i don't have to reply again about the same thing. > > BR, > Nikos > ----- Original Message ----- > From: Bogdan Irimia > To: users@kannel.org > Sent: Monday, September 06, 2010 12:06 PM > Subject: Issue with UCP - reconnection problem > > > Hello > > I'm reposting this same issue: I have a problem with the UCP connection: > - during "normal" operation, I get these messages every 10 minutes: > 2010-08-30 15:57:09 [2280] [7] DEBUG: EMI2[vodafone-8878]: clear_sent > called > 2010-08-30 15:57:09 [2280] [7] INFO: EMI2[vodafone-8878]: connecting to > Primary SMSC > I suppose this is because the SMSC closes connection after 10 minutes of > inactivity (according to Vodafone, with whom we are testing). I configured > the account with keepalive = 50 but no improvement. But I am able to send > and receive messages normally. > - after a while (2 or 3 days) I get these messages in the log: > 2010-08-30 16:07:41 [2280] [7] INFO: EMI2[vodafone-8878]: connecting to > Primary SMSC > 2010-08-30 16:08:02 [2280] [7] ERROR: connect failed > 2010-08-30 16:08:02 [2280] [7] ERROR: System error 110: Connection timed > out > 2010-08-30 16:08:02 [2280] [7] ERROR: error connecting to server > `217.10.194.192' at port `6001' > 2010-08-30 16:08:02 [2280] [7] ERROR: EMI2[vodafone-8878]: opening TCP > connection to 217.10.194.192 failed > 2010-08-30 16:08:02 [2280] [7] ERROR: EMI2[vodafone-8878]: Couldn't > connect to SMS center (retrying in 10 seconds). > During these messages, the port is in this state (using netstat): > tcp 0 1 93.113.15.3:2878 217.10.194.192:x11-1 > SYN_SENT > Also, with Wireshark I noticed that Kannel sends SYN packet to server > port, the server returns SYN ACK, but Kannel does not return ACK. Thus, > the connection isn't made successful. > > So there are two questions: > - is it true that an UCP client should only connect when sending a > message? during inactivity, connection can be closed, and any incoming > messages could be received using receive-port? > - why does Kannel fails to reconnect after a while, due to failing in > sending ACK message back to connecting port? > > Thank you! >
