Hello All, Quick question about the data format. What would cause a measurement to have an empty from field but contain data? An example would be probe_id 13663 from measurement 1672218[1]. A cursory glance seems to happens a lot more with V6 Thanks John [1]https://atlas.ripe.net/api/v1/measurement-latest/1672218/
Hi John, all On Fri, Jun 6, 2014 at 5:23 PM, john <mail@johnbond.org> wrote:
Hello All,
Quick question about the data format. What would cause a measurement to have an empty from field but contain data? An example would be probe_id 13663 from measurement 1672218[1]. A cursory glance seems to happens a lot more with V6
Seems like the API is missing the probe's v4 info (prefix and addr) [1], even though it is not a v6-only probe since it does indeed report measurement results for msm 1672218. If the backends where all this data is being pulled from do not have that bit of information, it cannot be used in any API at all, other than having its value set to null or an empty string. I've seen this happening before but I don't have an explanation for it. Hopefully, devs might be able to shed some light as to why some probes cannot report their IP addresses.
Thanks John
[1]https://atlas.ripe.net/api/v1/measurement-latest/1672218/
Iñigo [1] https://atlas.ripe.net/api/v1/probe/13663/?format=json -- "If you want to go fast, go alone. If you want to go far, go together."
Hi, On 2014/06/06 17:23 , john wrote:
Quick question about the data format. What would cause a measurement to have an empty from field but contain data? An example would be probe_id 13663 from measurement 1672218[1]. A cursory glance seems to happens a lot more with V6
The 'from' field is the address of the probe as recorded by the controller (as opposed to what the probe reports itself as 'src_addr'). The controller takes it from the ssh connection. A probe that has both v4 and v6 tries to initiate two ssh connections, one over v4 and one over v6. If one of them fails, then it is possible that the probe connects but the controller doesn't know the IP address of the one that fails. Philip
On 06/06/14 17:36, Philip Homburg wrote:
Hi,
On 2014/06/06 17:23 , john wrote:
Quick question about the data format. What would cause a measurement to have an empty from field but contain data? An example would be probe_id 13663 from measurement 1672218[1]. A cursory glance seems to happens a lot more with V6
The 'from' field is the address of the probe as recorded by the controller (as opposed to what the probe reports itself as 'src_addr').
The controller takes it from the ssh connection. A probe that has both v4 and v6 tries to initiate two ssh connections, one over v4 and one over v6. If one of them fails, then it is possible that the probe connects but the controller doesn't know the IP address of the one that fails. Thanks for the explanation. would it be possible to also expos the src_addr through sagan?
Thanks John
On 2014/06/06 17:46 , john wrote:
Thanks for the explanation. would it be possible to also expos the src_addr through sagan?
It is there, it is just spelled differently (source_address) Philip
participants (3)
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Iñigo Ortiz de Urbina -
john -
Philip Homburg