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On 07/08/15 16:17, Paul Vlaar wrote:
> Hi all,
>
> I was wondering if anyone managed to come up with a method of
> getting a probe selection via the API that is based on city. The
> web interface allows this, by searching for "place", which is
> subsequently handled by the Google Maps API (I think), and which
> then comes back with a number of probes on the map, in that given
> place. However I need this in the API, which only allows to select
> probes based on "area, country, prefix, asn".
>
> What I'm currently trying to come up with is a way to map, more or
> less, onto the list of ICANN specified probing locations for their
> DNS tests. This list is published here:
>
> https://tld-monitor.icann.org/nodes.csv
>
> I've been trying to go by the ASNs that the listed locations have
> their IP space in, but that frequently gives me a negative result
> (no probes present). The same for the prefixes themselves, of
> course. And just going by the enclosing country code is fine for a
> small place like Luxembourg, but not for a big country like
> Canada.
>
> So if anyone has any ideas on how to achieve this in a dynamic way
> (so as not to have to manually build and maintain a list of
> probes), I'd be very interested in hearing about that.
I do have code to do the selection part of the process, that can
automate the selection of probes, if it helps I can put it on Github?
e1000$./select_probes.py -h
usage: select_probes.py [-h] [-v] [-l LOCSTRING] [-p POINT] [-r RADIUS]
[-n NUMBER] [-f FIELDS] [-a MAXPERAS] [-d]
optional arguments:
-h, --help show this help message and exit
-v, --verbosity
-l LOCSTRING, --locstring LOCSTRING
location string, ie 'Amsterdam,NL'
-p POINT, --point POINT
location as <lat>,<lon>-string, ie '48.45,9.16'
-r RADIUS, --radius RADIUS
radius (km) within which to select probes
-n NUMBER, --number NUMBER
number of probes requested
-f FIELDS, --fields FIELDS
comma separated list of fields to return
(output is
tsv)
-a MAXPERAS, --maxperas MAXPERAS
maximum no. of probes per IPv4 source AS
-d, --includedownprobes
include probes that are down (default: don't
include
these)
e1000$./select_probes.py -l "Maastricht,NL" -r 20 -f id,asn_v4
14648 9143
11917 9143
16979 61956
438 9143
20036 12392
18396 12392
13308 9143
13656 12392
16243 9143
cheers,
Emile
>
> Thank you,
>
> Paul Vlaar
>
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