[Freeswitch-users] Record and live stream WAV to HTTP server

Tue Apr 5 12:04:09 MSD 2016

Think is requred streaming feature of freeswitch.
Look at mod_esf
<https://freeswitch.org/confluence/display/FREESWITCH/mod_esf> and mod_vlc
<https://wiki.freeswitch.org/wiki/Mod_vlc>
Instruction to compile mod_vlc on provided link is to old but helpfull to
undestand how to stream media to http server.

For compiling mod_vlc please use vlc repo
<https://freeswitch.org/stash/projects/SD/repos/vlc/browse> and centos
instruction
<https://freeswitch.org/confluence/display/FREESWITCH/Creating+RPM+repositary>
.
After you intall vlc, then you can enable mod_vlc module in freeswitch
sources(SPEC file) and compile freeswitch.

Sergey

вт, 5 апр. 2016 г. в 10:31, Vincent Gire <vincent.gire at gmail.com>:

> webdav, mod_http_cache or mod_httapi all results in sending the recording
> only *after* it is complete.
> They all write the recording to a file, wait for the recording to
> complete and the file to close and then send it over HTTP.
>
> I would like to start sending the recording to the remove server as soon
> as it starts (max 1 sec latency).
> mod_http_cache or mod_httapi would be perfect if they were streaming the
> recording like mod_shout.
>
>
> On Mon, Apr 4, 2016 at 8:50 PM, Sergey Safarov <s.safarov at gmail.com>
> wrote:
>
>> Input/output latency is not problem.  I use Kazoo on my servers and call
>> recording is stored to database during 5 seconds after hangup.
>> What is broken in your case if save file using webdav or http_cache?
>>
>> On Mon, Apr 4, 2016, 21:10 Vincent Gire <vincent.gire at gmail.com> wrote:
>>
>>> Hello Sergey,
>>>
>>> Thank you for your answer.
>>> I've looked into webdav mounted filesystem.
>>>
>>> Unfortunately, most WebDav clients (especially davfs2 on debian) do a
>>> lot of buffering, caching and even lock-null requests (lock a non existent
>>> resource before writing to it). I also suspect that they wait for the end
>>> of the write operation.
>>> The result is a latency of a few seconds witch is not much better than
>>> what I achieve with mod_shout if I transcode the MP3.
>>>
>>> Any other idea ?
>>>
>>> Thank you !
>>>
>>> Best regards
>>>
>>> Vincent
>>>
>>> On Sun, Apr 3, 2016 at 7:30 PM, Sergey Safarov <s.safarov at gmail.com>
>>> wrote:
>>>
>>>> Please look at webdav mounted filesystem.
>>>>
>>>> On Sun, Apr 3, 2016, 19:17 Vincent Gire <vincent.gire at gmail.com> wrote:
>>>>
>>>>> Hi all,
>>>>>
>>>>> Thank you to all contributing to FreeSWITCH !
>>>>>
>>>>> I'm working on a IVR project where logic is implemented on a HTTP
>>>>> server.
>>>>> We are leaving Twilio because we now need to record and live stream
>>>>> the session to the HTTP server in WAV format (chunked transfer encoding).
>>>>>
>>>>> *mod_httapi* looks great (HT TAPI very similar to Twilio's) but it
>>>>> seems that the records are first saved to disk before there are sent to the
>>>>> server as chunked data.
>>>>> We need the transfer to start as soon as the recording starts.
>>>>>
>>>>> *mod_shout* does start the request almost as the records starts but
>>>>> it does not support WAV file and shout:// is not exactly a HTTP request
>>>>> (SOURCE method instead of PUT).
>>>>>
>>>>> Is there a way to use these modules to achieve our goal ?
>>>>>
>>>>> If not, we are willing to author a specific module or rather
>>>>> contribute to the existing ones.
>>>>>
>>>>> We've identified two approaches:
>>>>>
>>>>>    1. From *mod_httapi* Modify mod_httapi to directly stream the
>>>>>    record instead of completely saving it to disk before the HTTP chunked
>>>>>    transfer starts.
>>>>>    This seems the most logical but with more than 3000 lines,
>>>>>    mod_httapi does not seem to be the easiest module to build upon for
>>>>>    newcomers!
>>>>>
>>>>>    2. From *mod_shout*
>>>>>       1. Modify libshoot to replace the custom SOURCE method with
>>>>>       standard HTTP PUT method
>>>>>       2. Modify mod_shout to support wav files
>>>>>       3. Implement our IVR in script (javascript/lua)
>>>>>
>>>>> What do you think ?
>>>>>
>>>>> Thank you for your help.
>>>>>
>>>>> Cheers,
>>>>> Vincent
>>>>>
>>>>> _________________________________________________________________________
>>>>> Professional FreeSWITCH Consulting Services:
>>>>> consulting at freeswitch.org
>>>>> http://www.freeswitchsolutions.com
>>>>>
>>>>> Official FreeSWITCH Sites
>>>>> http://www.freeswitch.org
>>>>> http://confluence.freeswitch.org
>>>>> http://www.cluecon.com
>>>>>
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>>>>> UNSUBSCRIBE:
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>>>>> http://www.freeswitch.org
>>>>
>>>>
>>>>
>>>> _________________________________________________________________________
>>>> Professional FreeSWITCH Consulting Services:
>>>> consulting at freeswitch.org
>>>> http://www.freeswitchsolutions.com
>>>>
>>>> Official FreeSWITCH Sites
>>>> http://www.freeswitch.org
>>>> http://confluence.freeswitch.org
>>>> http://www.cluecon.com
>>>>
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>>>>
>>>
>>>
>>>
>>> --
>>> Vincent Gire
>>> _________________________________________________________________________
>>> Professional FreeSWITCH Consulting Services:
>>> consulting at freeswitch.org
>>> http://www.freeswitchsolutions.com
>>>
>>> Official FreeSWITCH Sites
>>> http://www.freeswitch.org
>>> http://confluence.freeswitch.org
>>> http://www.cluecon.com
>>>
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>>> http://www.freeswitch.org
>>
>>
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services:
>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>>
>> Official FreeSWITCH Sites
>> http://www.freeswitch.org
>> http://confluence.freeswitch.org
>> http://www.cluecon.com
>>
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>> http://www.freeswitch.org
>>
>
>
>
> --
> Vincent Gire
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://confluence.freeswitch.org
> http://www.cluecon.com
>
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