Re: [PATCH] alt-charset handling in HTTP SMSC module

Stipe Tolj <[email protected]> Tue, 14 Mar 2017 11:08:23 +0100
Newsgroups gmane.comp.mobile.kannel.devel
Organization Kannel Software Foundation (KSF)
Message-ID <[email protected]>
Am 09.03.2011 00:45, schrieb Stipe Tolj:
> Hi all,
>
> here is small issue that I resolved some days ago for a client that uses the
> HTTP SMSC towards an own HTTP API (via the generic type).
>
> In the abstractive layer call httpsmsc_send() we handle the conversion to an
> alternative character encoding, based on the value of 'alt-charset' of the
> corresponding 'group = smsc' context. So far so good.
>
> The point is: the function ASSUMES that all MTs have our internal encoding
> (UTF-8) in the msg->sms.msgdata payload. Which is NOT the case if the smsbox
> connection passed a coding=2, hence we have msg->sms.coding = 2 indicating that
> the msgdata is UCS-2 and NOT UTF-8. That's why we need to handle both cases
> here. The patch does this, and also ensures that the msg->sms.coding is also
> reset to DC_UNDEF to ensure that any specific API functions don't indicate a
> "wrong assumptive" encoding.
>
> Please review and vote for commitment, should be pretty obvious.

reconsidered this patchset as we came across the problem one more time.

We NEED a way (by setting the alt-charset) to ensure that we CAN define 
a unique encoding torwards the upstream, otherwise any HTTP API that has 
no way to indicate the encoding get's UTF-8 (for coding=0) and UCS-2 
(for coding=2) as payload, which messes things up semantically.

Stipe

-- 
Best Regards,
Stipe Tolj

-------------------------------------------------------------------
DÃŒsseldorf, NRW, Germany

Kannel Foundation                 tolj.org system architecture
http://www.kannel.org/            http://www.tolj.org/

stolj at kannel.org               st at tolj.org
-------------------------------------------------------------------