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Subject: Re: binding trouble if Port is already in use, src/ioc/rsrv/caservertask.c
From: Heinz Junkes <junkes@fhi-berlin.mpg.de>
To: Michael Davidsaver <mdavidsaver@gmail.com>
Cc: core-talk@aps.anl.gov
Date: Mon, 12 Jun 2017 09:57:04 +0200
can confirm that with
## EPICS R3.16.1-DEV

this problem has been fixed.
Heinz

> On 08 Jun 2017, at 14:26, Michael Davidsaver <mdavidsaver@gmail.com> wrote:
> 
> Heinz,
> 
>> ## EPICS R3.16.0.1-DEV-fhi
> 
> Seeing the '-DEV', which revision are you building from?  I think this
> has been fixed already.  For me this works with 3.16.1.
> 
> Michael
> 
> 
> On 06/08/2017 10:27 AM, Heinz Junkes wrote:
>> Hi,
>> 
>> when I try to run an ioc on a system (linux-x86_64) where still some other ioc’s are running (standard Port in use)  I see
>> 
>> ############################################################################
>> ## EPICS R3.16.0.1-DEV-fhi
>> ## EPICS Base built Jun  8 2017
>> ############################################################################
>> xWidth = 100, yHeight = 100
>> cas warning: Configured TCP port was unavailable.
>> cas warning: Using dynamically assigned TCP port 36485,
>> cas warning: but now two or more servers share the same UDP port.
>> cas warning: Depending on your IP kernel this server may not be
>> cas warning: reachable with UDP unicast (a host's IP in EPICS_CA_ADDR_LIST)
>> tryBind (Addr: 0xa141e01, Port: 5064)   <————————— my debug output Addr 10.20.30.1, just bevor tryBind
>> tryBind failed (Addr: 0xa141e01, Port: 5064) < ———————————— my debug output, tryBind failed (line 133 src/ioc/rsrv/caservertask.c)
>> CAS: No TCP server started
>> Thread _main_ (0x19c3f50) can't proceed, suspending.
>> Dumping a stack trace of thread '_main_':
>> [    0x7ff760d43303]: /home/rtems/EPICS/add-rtems-4.12-api/lib/linux-x86_64/libCom.so.3.16.0(epicsStackTrace+0x73)
>> [    0x7ff760d32c05]: /home/rtems/EPICS/add-rtems-4.12-api/lib/linux-x86_64/libCom.so.3.16.0(cantProceed+0xc5)
>> [    0x7ff75fa2801a]: /home/rtems/EPICS/add-rtems-4.12-api/lib/linux-x86_64/libdbCore.so.3.16.0(rsrv_init+0x104a)
>> [    0x7ff75fa24bfb]: /home/rtems/EPICS/add-rtems-4.12-api/lib/linux-x86_64/libdbCore.so.3.16.0(iocBuild+0x2b)
>> [    0x7ff75fa24d89]: /home/rtems/EPICS/add-rtems-4.12-api/lib/linux-x86_64/libdbCore.so.3.16.0(iocInit+0x9)
>> [    0x7ff760d2d4e7]: /home/rtems/EPICS/add-rtems-4.12-api/lib/linux-x86_64/libCom.so.3.16.0(iocshBody+0xc17)
>> [          0x409b92]: ../../bin/linux-x86_64/IOCCryvisil(main+0x12)
>> [    0x7ff75ed84830]: /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)
>> [          0x409be9]: ../../bin/linux-x86_64/IOCCryvisil(_start+0x29)
>> 
>> 
>> Defining 
>> epicsEnvSet("EPICS_CAS_SERVER_PORT","5066”)
>> in st.cmd solves the problem :
>> 
>> Starting iocInit
>> ############################################################################
>> ## EPICS R3.16.0.1-DEV-fhi
>> ## EPICS Base built Jun  8 2017
>> ############################################################################
>> xWidth = 100, yHeight = 100
>> tryBind (Addr: 0xa141e01, Port: 5066)
>> iocRun: All initialization complete
>> ## Start any sequence programs
>> #seq(sncxxx, "user=rtems")
>> #startPVAServer
>> epics> 
>> 
>> 
>> I am not using the actual src/ioc/rsrv/caservertask.c with the “autoMaxBytes” extension.
>> 
>> Heinz
>> 
>> 
>> 
> 

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References:
binding trouble if Port is already in use, src/ioc/rsrv/caservertask.c Heinz Junkes
Re: binding trouble if Port is already in use, src/ioc/rsrv/caservertask.c Michael Davidsaver

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