Hi, that looks different indeed. Such buffer problems usually indicate that your client uses a different traci version than the server. Please check that they are on the same version and you do not have any old versions in your PATH/PYTHONPATH.
Best regards, Michael Am 04.12.20 um 18:08 schrieb Marcelo Andrade Rodrigues D Almeida: > Thank you for the clarification > > After trying the original test with version 1.8.0, I still receive the > same error > (that somewhat differs from the simple test as it is also accompanied by > "unpack requires a buffer of 4 bytes" error) > > Perhaps the original problem is other than the simple test was reproducing. > > See attached log with the noticed behavior. > > Is there anything I can try to test what the cause is and make it easily > reproducible? > > This behavior is happening in a fairly complex application (few parallel > simulations created several times) with docker executions on a ubuntu > remote server. > > > Thank you in advance > > > Sincerely, > > Marcelo d'Almeidas > > On Fri, Nov 27, 2020 at 1:45 PM Michael Behrisch <[email protected] > <mailto:[email protected]>> wrote: > > Hi, > yes it is the intended behavior. We noticed that there is no point in > leaving the port open once all clients have connected. So we just close > it and it is available to be used again. This should also help in > avoiding conflicts since the ports are not open very long. > > Best regards, > Michael > > Am 26.11.20 um 13:02 schrieb Marcelo Andrade Rodrigues D Almeida: > > Sorry for the very late reply and thank you for working on it > > > > I built it from the source and tested it with the simple example above > > > > > > I was expecting it to leave an exception telling that the address was > > already in use, instead of hanging the process. > > > > The behavior now is that the second connection is successful even > though > > the same port was used. > > > > When inspecting the system tcp ports with 'netstat -atn', it seems > that > > both are created with a 'double-mapping' (port 50000) > > > > (base) marcelo@Lenovo-Legion-5-15IMH05H:~$ netstat -atn > > Active Internet connections (servers and established) > > Proto Recv-Q Send-Q Local Address Foreign Address > State > > tcp 0 0 0.0.0.0:34463 <http://0.0.0.0:34463> > <http://0.0.0.0:34463 <http://0.0.0.0:34463>> > > 0.0.0.0:* LISTEN > > tcp 0 0 127.0.0.53:53 <http://127.0.0.53:53> > <http://127.0.0.53:53 <http://127.0.0.53:53>> > > 0.0.0.0:* LISTEN > > tcp 0 0 127.0.0.1:631 <http://127.0.0.1:631> > <http://127.0.0.1:631 <http://127.0.0.1:631>> > > 0.0.0.0:* LISTEN > > tcp 0 0 127.0.0.1:50000 <http://127.0.0.1:50000> > <http://127.0.0.1:50000 <http://127.0.0.1:50000>> > > 127.0.0.1:45794 <http://127.0.0.1:45794> <http://127.0.0.1:45794 > <http://127.0.0.1:45794>> ESTABLISHED > > tcp 0 0 192.168.1.5:48216 <http://192.168.1.5:48216> > <http://192.168.1.5:48216 <http://192.168.1.5:48216>> > > 216.58.202.142:443 <http://216.58.202.142:443> > <http://216.58.202.142:443 <http://216.58.202.142:443>> ESTABLISHED > > tcp 0 0 192.168.1.5:55908 <http://192.168.1.5:55908> > <http://192.168.1.5:55908 <http://192.168.1.5:55908>> > > 3.85.152.15:443 <http://3.85.152.15:443> <http://3.85.152.15:443 > <http://3.85.152.15:443>> ESTABLISHED > > tcp 0 0 127.0.0.1:60188 <http://127.0.0.1:60188> > <http://127.0.0.1:60188 <http://127.0.0.1:60188>> > > 127.0.0.1:59996 <http://127.0.0.1:59996> <http://127.0.0.1:59996 > <http://127.0.0.1:59996>> TIME_WAIT > > tcp 0 0 127.0.0.1:45794 <http://127.0.0.1:45794> > <http://127.0.0.1:45794 <http://127.0.0.1:45794>> > > 127.0.0.1:50000 <http://127.0.0.1:50000> <http://127.0.0.1:50000 > <http://127.0.0.1:50000>> ESTABLISHED > > tcp 0 0 127.0.0.1:60192 <http://127.0.0.1:60192> > <http://127.0.0.1:60192 <http://127.0.0.1:60192>> > > 127.0.0.1:59996 <http://127.0.0.1:59996> <http://127.0.0.1:59996 > <http://127.0.0.1:59996>> TIME_WAIT > > tcp 0 0 192.168.1.5:45396 <http://192.168.1.5:45396> > <http://192.168.1.5:45396 <http://192.168.1.5:45396>> > > 75.2.53.94:443 <http://75.2.53.94:443> <http://75.2.53.94:443 > <http://75.2.53.94:443>> ESTABLISHED > > tcp 0 0 192.168.1.5:33528 <http://192.168.1.5:33528> > <http://192.168.1.5:33528 <http://192.168.1.5:33528>> > > 198.252.206.25:443 <http://198.252.206.25:443> > <http://198.252.206.25:443 <http://198.252.206.25:443>> ESTABLISHED > > tcp 0 0 127.0.0.1:43994 <http://127.0.0.1:43994> > <http://127.0.0.1:43994 <http://127.0.0.1:43994>> > > 127.0.0.1:34859 <http://127.0.0.1:34859> <http://127.0.0.1:34859 > <http://127.0.0.1:34859>> TIME_WAIT > > tcp 0 0 127.0.0.1:50000 <http://127.0.0.1:50000> > <http://127.0.0.1:50000 <http://127.0.0.1:50000>> > > 127.0.0.1:45798 <http://127.0.0.1:45798> <http://127.0.0.1:45798 > <http://127.0.0.1:45798>> ESTABLISHED > > tcp 0 0 192.168.1.5:48220 <http://192.168.1.5:48220> > <http://192.168.1.5:48220 <http://192.168.1.5:48220>> > > 216.58.202.142:443 <http://216.58.202.142:443> > <http://216.58.202.142:443 <http://216.58.202.142:443>> TIME_WAIT > > tcp 0 0 192.168.1.5:58644 <http://192.168.1.5:58644> > <http://192.168.1.5:58644 <http://192.168.1.5:58644>> > > 3.225.183.105:443 <http://3.225.183.105:443> > <http://3.225.183.105:443 <http://3.225.183.105:443>> ESTABLISHED > > tcp 0 0 192.168.1.5:48502 <http://192.168.1.5:48502> > <http://192.168.1.5:48502 <http://192.168.1.5:48502>> > > 216.58.202.142:443 <http://216.58.202.142:443> > <http://216.58.202.142:443 <http://216.58.202.142:443>> ESTABLISHED > > tcp 0 0 127.0.0.1:56510 <http://127.0.0.1:56510> > <http://127.0.0.1:56510 <http://127.0.0.1:56510>> > > 127.0.0.1:34165 <http://127.0.0.1:34165> <http://127.0.0.1:34165 > <http://127.0.0.1:34165>> ESTABLISHED > > tcp 0 0 192.168.1.5:43464 <http://192.168.1.5:43464> > <http://192.168.1.5:43464 <http://192.168.1.5:43464>> > > 52.11.85.228:443 <http://52.11.85.228:443> > <http://52.11.85.228:443 <http://52.11.85.228:443>> ESTABLISHED > > tcp 0 0 192.168.1.5:44560 <http://192.168.1.5:44560> > <http://192.168.1.5:44560 <http://192.168.1.5:44560>> > > 172.217.28.74:443 <http://172.217.28.74:443> > <http://172.217.28.74:443 <http://172.217.28.74:443>> ESTABLISHED > > tcp 0 0 192.168.1.5:36802 <http://192.168.1.5:36802> > <http://192.168.1.5:36802 <http://192.168.1.5:36802>> > > 172.217.28.3:443 <http://172.217.28.3:443> > <http://172.217.28.3:443 <http://172.217.28.3:443>> ESTABLISHED > > tcp 0 0 127.0.0.1:45798 <http://127.0.0.1:45798> > <http://127.0.0.1:45798 <http://127.0.0.1:45798>> > > 127.0.0.1:50000 <http://127.0.0.1:50000> <http://127.0.0.1:50000 > <http://127.0.0.1:50000>> ESTABLISHED > > tcp 0 0 127.0.0.1:34118 <http://127.0.0.1:34118> > <http://127.0.0.1:34118 <http://127.0.0.1:34118>> > > 127.0.0.1:40919 <http://127.0.0.1:40919> <http://127.0.0.1:40919 > <http://127.0.0.1:40919>> CLOSE_WAIT > > tcp 0 0 192.168.1.5:51196 <http://192.168.1.5:51196> > <http://192.168.1.5:51196 <http://192.168.1.5:51196>> > > 107.21.203.251:443 <http://107.21.203.251:443> > <http://107.21.203.251:443 <http://107.21.203.251:443>> ESTABLISHED > > tcp 0 0 192.168.1.5:36070 <http://192.168.1.5:36070> > <http://192.168.1.5:36070 <http://192.168.1.5:36070>> > > 172.217.192.189:443 <http://172.217.192.189:443> > <http://172.217.192.189:443 <http://172.217.192.189:443>> > ESTABLISHED > > tcp 0 0 192.168.1.5:36662 <http://192.168.1.5:36662> > <http://192.168.1.5:36662 <http://192.168.1.5:36662>> > > 34.235.68.102:443 <http://34.235.68.102:443> > <http://34.235.68.102:443 <http://34.235.68.102:443>> TIME_WAIT > > tcp 0 0 192.168.1.5:37930 <http://192.168.1.5:37930> > <http://192.168.1.5:37930 <http://192.168.1.5:37930>> > > 172.217.29.229:443 <http://172.217.29.229:443> > <http://172.217.29.229:443 <http://172.217.29.229:443>> ESTABLISHED > > tcp6 0 0 127.0.0.1:6942 <http://127.0.0.1:6942> > <http://127.0.0.1:6942 <http://127.0.0.1:6942>> :::* > > LISTEN > > tcp6 0 0 127.0.0.1:63342 <http://127.0.0.1:63342> > <http://127.0.0.1:63342 <http://127.0.0.1:63342>> > > :::* LISTEN > > tcp6 0 0 :::80 :::* > LISTEN > > tcp6 0 0 :::34165 :::* > LISTEN > > tcp6 0 0 :::40919 :::* > LISTEN > > tcp6 0 0 ::1:631 :::* > LISTEN > > tcp6 0 0 127.0.0.1:40919 <http://127.0.0.1:40919> > <http://127.0.0.1:40919 <http://127.0.0.1:40919>> > > 127.0.0.1:34118 <http://127.0.0.1:34118> <http://127.0.0.1:34118 > <http://127.0.0.1:34118>> FIN_WAIT2 > > tcp6 0 0 127.0.0.1:34165 <http://127.0.0.1:34165> > <http://127.0.0.1:34165 <http://127.0.0.1:34165>> > > 127.0.0.1:56510 <http://127.0.0.1:56510> <http://127.0.0.1:56510 > <http://127.0.0.1:56510>> ESTABLISHED > > > > > > Is this the intended behavior? > > > > > > Thank you once again > > > > > > Sincerely, > > > > Marcelo d'Almeida > > > > On Tue, Nov 3, 2020 at 6:10 PM Michael Behrisch <[email protected] > <mailto:[email protected]> > > <mailto:[email protected] <mailto:[email protected]>>> wrote: > > > > Hi, > > you are right, this behavior is not useful. I opened a ticket > here: > > https://github.com/eclipse/sumo/issues/7750 > <https://github.com/eclipse/sumo/issues/7750> > > <https://github.com/eclipse/sumo/issues/7750 > <https://github.com/eclipse/sumo/issues/7750>>. It already has a > > preliminary fix but this needs a little more testing. If you > like, you > > can try the nightly build (showing up tomorrow) or build > yourself and > > report your findings. > > > > Best regards, > > Michael > > > > Am 03.11.20 um 18:08 schrieb Marcelo Andrade Rodrigues D Almeida: > > > Hi everyone > > > > > > Trying to open two simulations with the same port hangs the > entire > > > execution, instead of raising an exception > > > > > > Error > > > "Error: tcpip::Socket::accept() Unable to create listening > socket: > > > Address already in use > > > Quitting (on error)." > > > > > > > > > I'm currently running several experiments, simultaneously, in > > isolated > > > docker containers. And inside every experiment, running several > > parallel > > > simulations > > > > > > The problem is that my experiments can step (and eventually > does) > > into > > > address conflict problems (race condition) and the hanging > > prevents any > > > chance of retrying it with a new port, suspending the entire > > experiment > > > forever. > > > > > > The use of synchronization locks prevents address conflicts > > inside one > > > experiment, so I'm basically limited to run one experiment > at a time, > > > which is very time consuming. > > > > > > > > > As a workaround, I'm going to specify port ranges for each > simulation > > > and check it for availability > > > > > > Let me know if there is a better solution as workaround > > > > > > And thank you in advance > > > > > > > > > P.S. I've included a trivial example to show the hanging > > behavior, but > > > there is nothing special about it. > > > > > > > > > Sincerely, > > > > > > Marcelo d'Almeida > > > > > > _______________________________________________ > > > sumo-user mailing list > > > [email protected] <mailto:[email protected]> > <mailto:[email protected] <mailto:[email protected]>> > > > To unsubscribe from this list, visit > > https://www.eclipse.org/mailman/listinfo/sumo-user > <https://www.eclipse.org/mailman/listinfo/sumo-user> > > <https://www.eclipse.org/mailman/listinfo/sumo-user > <https://www.eclipse.org/mailman/listinfo/sumo-user>> > > > > > > > > > _______________________________________________ > > sumo-user mailing list > > [email protected] <mailto:[email protected]> > <mailto:[email protected] <mailto:[email protected]>> > > To unsubscribe from this list, visit > > https://www.eclipse.org/mailman/listinfo/sumo-user > <https://www.eclipse.org/mailman/listinfo/sumo-user> > > <https://www.eclipse.org/mailman/listinfo/sumo-user > <https://www.eclipse.org/mailman/listinfo/sumo-user>> > > > > > > _______________________________________________ > > sumo-user mailing list > > [email protected] <mailto:[email protected]> > > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user > <https://www.eclipse.org/mailman/listinfo/sumo-user> > > > _______________________________________________ > sumo-user mailing list > [email protected] <mailto:[email protected]> > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user > <https://www.eclipse.org/mailman/listinfo/sumo-user> > > > _______________________________________________ > sumo-user mailing list > [email protected] > To unsubscribe from this list, visit > https://www.eclipse.org/mailman/listinfo/sumo-user > _______________________________________________ sumo-user mailing list [email protected] To unsubscribe from this list, visit https://www.eclipse.org/mailman/listinfo/sumo-user
