Hello!

We could do it as length+text kinda easily but for historical reasons it isn't there. Please note that this kind of interface has become impossible to maintain. We won't extend this interface to include length, mostly bc. it would just be another hack in an already insufficient and slow protocol.

You may expect not only a completely new protocol based on CBOR and YANG to communicate with BIRD, but also a quite fast discontinuation of the current interface.

I hope this information somehow helps you in your long-term planning.

Maria

On 2023-10-18 23:26, Alexander Zubkov via Bird-users wrote:
Hi,

You can find some information about it here:

https://bird.network.cz/?get_doc&v=20&f=prog-2.html#ss2.10

I think (IMHO) the reason why it is not implemented as "length+text" is because for that you need to prepare the whole response in some buffer first to calculate its size. In the current approach you can put the things out without the intermediate buffer.

Regards,
Alexander

On Wed, Oct 18, 2023 at 11:17 PM LIU Chris via Bird-users <bird-users@network.cz> wrote:

Classified as: {OPEN}

 

I don’t think so.

In fact, nothing wrong, just wondering the reason.

 

 

 

{OPEN}

From: netravnen+birdlist@gmail.com <netravnen+birdlist@gmail.com>
Sent: Wednesday, October 18, 2023 2:06 PM
To: LIU Chris <chris-zq.liu@urbanandmainlines.com>
Cc: bird-users@network.cz
Subject: Re: bird control socket response

 

LIU,

 

Can the use case be covered by SNMPd agentx support?

 

 

On Wed, 18 Oct 2023 at 19:19, LIU Chris via Bird-users <bird-users@network.cz> wrote:

Classified as: {OPEN}

 

I want to implement an application to talk to bird daemon, basically like birdc/birdcl.

The control socket is TCP stream, it is fine. But the response from bird daemon adds some headers for each line

I understand server want to make a boundary/delimiter for stream. Just wondering why not just add how many bytes in the beginning of response, instead of this inconvenient way (have to decode line by line). I am not question bird implementation, just wondering J

 

Current format like below

 

Show protocols

0001 BIRD 2.0.10 ready.

2002-Name       Proto      Table      State  Since         Info

1002-device1    Device     ---        up    

 static_bgp     Static     master4    up       

 kernel1        Kernel     master4    up       

0000

 

 

 

With Best Regards,

Chris LIU

 

{OPEN}

Thales is in the process of carving out its Transportation activity (GTS) from other Thales’ activities. In order to prepare this internal restructuring, a new e-mail address has been adopted and your GTS contacts now use urbanandmainlines.com. Please note that their Thales e-mail address remains also valid.

 

Thales is in the process of carving out its Transportation activity (GTS) from other Thales’ activities. In order to prepare this internal restructuring, a new e-mail address has been adopted and your GTS contacts now use urbanandmainlines.com. Please note that their Thales e-mail address remains also valid.

 
-- 
Maria Matejka (she/her) | BIRD Team Leader | CZ.NIC, z.s.p.o.