[Sis-ams] Interoperability testing - transfer protocols

[Jane Marquart]

Tim,

The GSFC flight architecture is based on UDP overall, so let¹s start with
that.

Jane


On 5/8/08 1:27 PM, "Ray, Timothy J. (GSFC-583.0)" <timothy.j.ray at nasa.gov>
wrote:

> Scott,
>  
> I agree with your choices.  UDP delivers datagrams (complete messages) to the
> application, so it is quite easy to get started with.  In fact, I would
> recommend that our first attempts at interoperability testing use UDP for both
> Meta-AMS and AMS messages.
>  
> One or two questions:  Given that TCP is a bitstream protocol, when it is used
> to carry messages, there is typically some sort of header that is added in
> front of each message (to allow the receiver to detect message boundaries).
> If we use TCP, will we add a header to the Œraw¹ AMS message?  And if so, have
> we agreed on the format of that header?
>  
> Tim
>  
> 
> 
> From: sis-ams-bounces at mailman.ccsds.org
> [mailto:sis-ams-bounces at mailman.ccsds.org] On Behalf Of Scott Burleigh
> Sent: Thursday, May 08, 2008 1:16 PM
> To: sis-ams at mailman.ccsds.org
> Subject: Re: [Sis-ams] Interoperability testing - transfer protocols
>  
> Ray, Timothy J. (GSFC-583.0) wrote:
> Hello all,
>  
> As an implementer of software to support interoperability testing, there are
> certain decisions that I have to make.  Two key decisions are:
> 1)      What protocol(s) to support for transferring Meta-AMS messages
> 2)      What protocol(s) to support for transferring AMS messages directly
> between nodes
>  
> Has our working group decided what, as a minimum, is required for our
> interoperability testing?
> My candidates would be UDP for (1) and both UDP and TCP for (2).  Lots of
> others make sense in specialized contexts but might be hard to provide to
> everyone involved in an interoperation test.
> 
> Scott
> 
> 
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