Re: [RFCv2] doc: Assisted Satellite Navigation API and Agent API

[andrzej zaborowski <balrogg@gmail.com>]

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Hi Simon,

On 23 November 2010 16:07, Simon LETHBRIDGE
<simon.lethbridge@stericsson.com> wrote:
>> -----Original Message-----
>> From: andrzej zaborowski [mailto:balrogg(a)gmail.com]
>> Since (correct me if I'm wrong) SendPositioningControl can only be
>> called in response to PositioningRequest(), it would seem more logical
>> to skip SendPositioningControl and have the agent return the xml
>> string from PositioningRequest(), e.g.
>>
>> string PositioningRequest(string xml_element)
>>
>> A D-bus call can take a couple of minutes to respond if needed.
>>
> There may be several calls to PositioningRequest() before a response is sent.
> The ofono agent would need to interpret the messages to see
> whether it should pend waiting for a response from the GNSS/GPS driver.
> Once a positioning procedure has been started it may get aborted.
> This abort may not be detected by the agent If the call
> to the PositioningRequest() does not return.

So should the agent interface additionally have a method like void
AbortPositioningRequest()?

I have posted this as just a possible idea.  However parallel agent
calls and aborting calls are both used in the agent interfaces in
bluez and ofono.  D-bus is asynchronous, so whether you call a method
and return immediately and then call another method to pass the
response, or make it a single method call is just a difference in the
protocol.

Best regards