[Freeswitch-users] Switch_curl
Chris Mandra
mandra at gmail.com
Thu Mar 17 13:24:03 MSK 2016
Thanks for responding Anthony!
I may just use mod curl instead of native bc it has the functionality I
need. How can I find info on how to use the api interface - maybe
examples of how
to use the api interface from c or c++?
Freeswitch is an amazing thing. Thanks for making it available to regular
people.
Thanks!
chris
On Thu, Mar 17, 2016 at 12:25 AM, Anthony Minessale <
anthony.minessale at gmail.com> wrote:
> Via one of the exposed interfaces like api interface etc.
> Why do you need mod_curl and native curl at the same time?
>
>
> On Wednesday, March 16, 2016, Chris Mandra <mandra at gmail.com> wrote:
>
>> Thanks for the responses guys. I have another question: I need to call
>> mod_curl api from my module. What's the proper way to call a module from a
>> module?
>> thanks, chris
>>
>> On Wed, Mar 16, 2016 at 4:54 PM, Anthony Minessale <
>> anthony.minessale at gmail.com> wrote:
>>
>>> If you use more threads you just need to make sure the objects are
>>> properly scoped. For instance, if you want to use a session from the other
>>> thread you need to read lock it for the life of the thread. Objects shared
>>> need to be dynamically allocated and properly mutexed etc.
>>>
>>> Whatever thread you call curl from will be used for the whole
>>> curl operation.
>>>
>>>
>>> On Wednesday, March 16, 2016, Michael Jerris <mike at jerris.com> wrote:
>>>
>>>> depends on your needs. The concern would be trying to access those
>>>> objects across threads potentially could cause issues depending on if they
>>>> are syncronized or not, easier to just not do it and not have the concern.
>>>> Anthony is suggesting looking at how we do it in other places. Life cycle
>>>> could be an issue, are you destroying things too early?
>>>>
>>>> On Mar 16, 2016, at 5:00 AM, Chris Mandra <mandra at gmail.com> wrote:
>>>>
>>>> Thanks for responding Anthony. Can you tell me this:
>>>> Should curl calls be done in separate thread or is it ok to do them in
>>>> the main thread of modules?
>>>> On Tuesday, March 15, 2016, Chris Mandra <mandra at gmail.com> wrote:
>>>>
>>>>>
>>>>> Should curl calls be done in separate thread or is it ok to do them in
>>>>> the main thread of modules?
>>>>> On Tuesday, March 15, 2016, Anthony Minessale <
>>>>> anthony.minessale at gmail.com> wrote:
>>>>>
>>>>>> Curl is used in a few places and is not unstable. Study some of
>>>>>> those mods and maybe you can see how to use it in a typical situation.
>>>>>> Probably its related to memory management or lifecycle of objects you may
>>>>>> be using.
>>>>>>
>>>>>> On Tuesday, March 15, 2016, Chris Mandra <mandra at gmail.com> wrote:
>>>>>>
>>>>>>> Hey guys, I'm working on a simple media bug module using FS 1.6.
>>>>>>> When a call comes in I'm calling switch_curl doing an http get.
>>>>>>>
>>>>>>> In switch_standard_app I use switch_curl and invoke
>>>>>>> switch_curl_easy_perform and exit after that.
>>>>>>>
>>>>>>> Calling switch_curl seems very unstable. It's crashing free switch
>>>>>>> most of the time. Are there any things I should be looking for related to
>>>>>>> this? I'm wondering if maybe this is a threading issue? Any ideas?
>>>>>>> I've included some backtraces
>>>>>>>
>>>>>>> Thanks, chris
>>>>>>>
>>>>>>>
>>>>>>> (gdb) bt
>>>>>>>
>>>>>>> #0 0x00007f8f00c59cc9 in __GI_raise (sig=sig at entry=6) at
>>>>>>> ../nptl/sysdeps/unix/sysv/linux/raise.c:56
>>>>>>>
>>>>>>> #1 0x00007f8f00c5d0d8 in __GI_abort () at abort.c:89
>>>>>>>
>>>>>>> #2 0x00007f8f00c96394 in __libc_message (do_abort=do_abort at entry=1,
>>>>>>> fmt=fmt at entry=0x7f8f00da4b28 "*** Error in `%s': %s: 0x%s ***\n")
>>>>>>> at ../sysdeps/posix/libc_fatal.c:175
>>>>>>>
>>>>>>> #3 0x00007f8f00ca266e in malloc_printerr (ptr=<optimized out>,
>>>>>>> str=0x7f8f00da0c19 "free(): invalid pointer", action=1) at malloc.c:4996
>>>>>>>
>>>>>>> #4 _int_free (av=<optimized out>, p=<optimized out>, have_lock=0)
>>>>>>> at malloc.c:3840
>>>>>>>
>>>>>>> #5 0x00007f8f01334567 in switch_log_node_free (pnode=pnode at entry=0x7f8eb2b1f158)
>>>>>>> at src/switch_log.c:136
>>>>>>>
>>>>>>> #6 0x00007f8eeb192a24 in read_packet (listener=listener at entry=0x7f8ebc027898,
>>>>>>> event=event at entry=0x7f8eb2b1f7f0, timeout=timeout at entry=0) at
>>>>>>> mod_event_socket.c:1361
>>>>>>>
>>>>>>> #7 0x00007f8eeb1988a0 in listener_run (thread=<optimized out>,
>>>>>>> obj=0x7f8ebc027898) at mod_event_socket.c:2719
>>>>>>>
>>>>>>> #8 0x00007f8f01544430 in dummy_worker (opaque=0x7f8eb2be4868) at
>>>>>>> threadproc/unix/thread.c:151
>>>>>>>
>>>>>>> #9 0x00007f8f00ff0182 in start_thread (arg=0x7f8eb2b20700) at
>>>>>>> pthread_create.c:312
>>>>>>>
>>>>>>> #10 0x00007f8f00d1d47d in clone () at
>>>>>>> ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
>>>>>>>
>>>>>>>
>>>>>>> *[*
>>>>>>> <https://soniccloud.slack.com/archives/D02UEC39S/p1458078254000027>
>>>>>>>
>>>>>>> 5:44
>>>>>>> <https://soniccloud.slack.com/archives/D02UEC39S/p1458078254000027>
>>>>>>>
>>>>>>> *]*
>>>>>>> <https://soniccloud.slack.com/archives/D02UEC39S/p1458078254000027>
>>>>>>>
>>>>>>> (gdb) bt full
>>>>>>>
>>>>>>> #0 0x00007f8f00c59cc9 in __GI_raise (sig=sig at entry=6) at
>>>>>>> ../nptl/sysdeps/unix/sysv/linux/raise.c:56
>>>>>>>
>>>>>>> resultvar = 0
>>>>>>>
>>>>>>> pid = 18329
>>>>>>>
>>>>>>> selftid = 18421
>>>>>>>
>>>>>>> #1 0x00007f8f00c5d0d8 in __GI_abort () at abort.c:89
>>>>>>>
>>>>>>> save_stage = 2
>>>>>>>
>>>>>>> act = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction
>>>>>>> = 0x0}, sa_mask = {__val = {0 <repeats 16 times>}}, sa_flags = 0,
>>>>>>> sa_restorer = 0x0}
>>>>>>>
>>>>>>> sigs = {__val = {32, 0 <repeats 15 times>}}
>>>>>>>
>>>>>>> #2 0x00007f8f00c96394 in __libc_message (do_abort=do_abort at entry=1,
>>>>>>> fmt=fmt at entry=0x7f8f00da4b28 "*** Error in `%s': %s: 0x%s ***\n")
>>>>>>> at ../sysdeps/posix/libc_fatal.c:175
>>>>>>>
>>>>>>> ap = {{gp_offset = 40, fp_offset = 32654, overflow_arg_area =
>>>>>>> 0x7f8eb2b1f010, reg_save_area = 0x7f8eb2b1efa0}}
>>>>>>>
>>>>>>> fd = 2
>>>>>>>
>>>>>>> on_2 = <optimized out>
>>>>>>>
>>>>>>> list = <optimized out>
>>>>>>>
>>>>>>> nlist = <optimized out>
>>>>>>>
>>>>>>> cp = <optimized out>
>>>>>>>
>>>>>>> written = <optimized out>
>>>>>>>
>>>>>>> #3 0x00007f8f00ca266e in malloc_printerr (ptr=<optimized out>,
>>>>>>> str=0x7f8f00da0c19 "free(): invalid pointer", action=1) at malloc.c:4996
>>>>>>>
>>>>>>> buf = "00007f8ed0036700"
>>>>>>>
>>>>>>> cp = <optimized out>
>>>>>>>
>>>>>>> #4 _int_free (av=<optimized out>, p=<optimized out>, have_lock=0)
>>>>>>> at malloc.c:3840
>>>>>>>
>>>>>>> size = <optimized out>
>>>>>>>
>>>>>>> fb = <optimized out>
>>>>>>>
>>>>>>> nextchunk = <optimized out>
>>>>>>>
>>>>>>> nextsize = <optimized out>
>>>>>>>
>>>>>>> nextinuse = <optimized out>
>>>>>>>
>>>>>>> prevsize = <optimized out>
>>>>>>>
>>>>>>> bck = <optimized out>
>>>>>>>
>>>>>>> fwd = <optimized out>
>>>>>>>
>>>>>>> errstr = <optimized out>
>>>>>>>
>>>>>>> locked = <optimized out>
>>>>>>>
>>>>>>> #5 0x00007f8f01334567 in switch_log_node_free (pnode=pnode at entry=0x7f8eb2b1f158)
>>>>>>> at src/switch_log.c:136
>>>>>>>
>>>>>>> node = 0x7f8ed8012ab0
>>>>>>>
>>>>>>> #6 0x00007f8eeb192a24 in read_packet (listener=listener at entry=0x7f8ebc027898,
>>>>>>> event=event at entry=0x7f8eb2b1f7f0, timeout=timeout at entry=0) at
>>>>>>> mod_event_socket.c:1361
>>>>>>>
>>>>>>> dnode = 0x7f8ed8012ab0
>>>>>>>
>>>>>>> do_sleep = <optimized out>
>>>>>>>
>>>>>>> mlen = 0
>>>>>>>
>>>>>>> bytes = 0
>>>>>>>
>>>>>>> mbuf = 0x7f8ecc1ebfc0 ""
>>>>>>>
>>>>>>> buf = "Content-Type: log/data\nContent-Length: 88\nLog-Level:
>>>>>>> 7\nText-Channel: 3\nLog-File: param_hps_strategy.cpp\nLog-Func:
>>>>>>> retrieve\nLog-Line: 115\nUser-Data: \347@
>>>>>>> \247\a\n\n\000\n\n\000\065-418f-a6d1-9dc8f48e0cf9\n\n\000\000\071\n\n\000c8f48e0cf9"...
>>>>>>>
>>>>>>> len = 88
>>>>>>>
>>>>>>> status = SWITCH_STATUS_BREAK
>>>>>>>
>>>>>>> count = 0
>>>>>>>
>>>>>>> elapsed = <optimized out>
>>>>>>>
>>>>>>> start = 1457966137
>>>>>>>
>>>>>>> pop = 0x7f8ed8012ab0
>>>>>>>
>>>>>>> ptr = 0x7f8ecc1ebfc0 ""
>>>>>>>
>>>>>>> crcount = 0 '\000'
>>>>>>>
>>>>>>> buf_len = 2048
>>>>>>>
>>>>>>> channel = 0x0
>>>>>>>
>>>>>>> clen = 0
>>>>>>>
>>>>>>> __PRETTY_FUNCTION__ = "read_packet"
>>>>>>>
>>>>>>> __func__ = "read_packet"
>>>>>>>
>>>>>>> #7 0x00007f8eeb1988a0 in listener_run (thread=<optimized out>,
>>>>>>> obj=0x7f8ebc027898) at mod_event_socket.c:2719
>>>>>>>
>>>>>>> listener = 0x7f8ebc027898
>>>>>>>
>>>>>>> buf = '\000' <repeats 1023 times>
>>>>>>>
>>>>>>> len = 1024
>>>>>>>
>>>>>>> status = <optimized out>
>>>>>>>
>>>>>>> event = 0x0
>>>>>>>
>>>>>>> reply = "\000OK log level [7]", '\000' <repeats 493 times>
>>>>>>>
>>>>>>> session = 0x0
>>>>>>>
>>>>>>> channel = 0x0
>>>>>>>
>>>>>>> revent = 0x0
>>>>>>>
>>>>>>> var = <optimized out>
>>>>>>>
>>>>>>> locked = 1
>>>>>>>
>>>>>>> __PRETTY_FUNCTION__ = "listener_run"
>>>>>>>
>>>>>>> __func__ = "listener_run"
>>>>>>>
>>>>>>> #8 0x00007f8f01544430 in dummy_worker (opaque=0x7f8eb2be4868) at
>>>>>>> threadproc/unix/thread.c:151
>>>>>>>
>>>>>>> thread = 0x7f8eb2be4868
>>>>>>>
>>>>>>> #9 0x00007f8f00ff0182 in start_thread (arg=0x7f8eb2b20700) at
>>>>>>> pthread_create.c:312
>>>>>>>
>>>>>>> __res = <optimized out>
>>>>>>>
>>>>>>> pd = 0x7f8eb2b20700
>>>>>>>
>>>>>>> now = <optimized out>
>>>>>>>
>>>>>>> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140250860095232,
>>>>>>> -640791540281233069, 0, 0, 140250860095936, 140250860095232,
>>>>>>> 578173923610734931, 577994035108262227}, mask_was_saved = 0}}, priv = {pad
>>>>>>> = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>>>>>>>
>>>>>>> not_first_call = <optimized out>
>>>>>>>
>>>>>>> pagesize_m1 = <optimized out>
>>>>>>>
>>>>>>> sp = <optimized out>
>>>>>>>
>>>>>>> freesize = <optimized out>
>>>>>>>
>>>>>>> __PRETTY_FUNCTION__ = "start_thread"
>>>>>>>
>>>>>>> #10 0x00007f8f00d1d47d in clone () at
>>>>>>> ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
>>>>>>>
>>>>>>> No locals
>>>>>>>
>>>>>>
>>>>>>
>>>>
>>>
>>> --
>>> Anthony Minessale II ♬ @anthmfs ♬ @FreeSWITCH ♬
>>>
>>> ☞ http://freeswitch.org/ ☞ http://cluecon.com/ ☞
>>> http://twitter.com/FreeSWITCH
>>> ☞ irc.freenode.net #freeswitch ☞ *http://freeswitch.org/g+
>>> <http://freeswitch.org/g+>*
>>>
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>>> ☎ sip:888 at conference.freeswitch.org ☎ +19193869900
>>>
>>> https://www.youtube.com/watch?v=9XXgW34t40s
>>> https://www.youtube.com/watch?v=NLaDpGQuZDA
>>>
>>>
>>> _________________________________________________________________________
>>> Professional FreeSWITCH Consulting Services:
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>>> http://www.freeswitchsolutions.com
>>>
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>>>
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>>>
>>
>>
>>
>> --
>> mandra
>> c:410.258.5281
>>
>
>
> --
> Anthony Minessale II ♬ @anthmfs ♬ @FreeSWITCH ♬
>
> ☞ http://freeswitch.org/ ☞ http://cluecon.com/ ☞
> http://twitter.com/FreeSWITCH
> ☞ irc.freenode.net #freeswitch ☞ *http://freeswitch.org/g+
> <http://freeswitch.org/g+>*
>
> ClueCon Weekly Development Call
> ☎ sip:888 at conference.freeswitch.org ☎ +19193869900
>
> https://www.youtube.com/watch?v=9XXgW34t40s
> https://www.youtube.com/watch?v=NLaDpGQuZDA
>
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://confluence.freeswitch.org
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>
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>
--
mandra
c:410.258.5281
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