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SocialPub/PrivaPub.Tests/Infrastructure/GeoLocatorTests.cs
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thepraandClaude Opus 5.5 436f7da464
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CDNs found by themselves, and servers followed through time
PrivaPub now finds CDNs three ways, best first: the address ranges the
CDNs publish (Cloudflare, Fastly, Amazon CloudFront, Bunny, Gcore,
Imperva), downloaded daily by CdnUpdater and kept in CdnRangeSet; the
CDN's fingerprint in the responses it already gets from a server
(EdgeHintsHandler on the federation client); and the networks that carry
only a CDN. The fixed ASN list is gone; ASNs shared with plain hosting
(AWS, DataPacket) no longer hide a server. A server's Geo records the
CDN, its domain and how it was found, and weekly snapshots now keep the
city and coordinates too.

Servers through time (ServerPlaces): /instances/:host/history lists a
server's weekly snapshots, a CDN-fronted server's geo names the CDN's
domain and where the server was before it (before_cdn), and
/api/privapub/v1/cdns and /cdns/:domain group servers by CDN with week
by week who joined and who left. Owner decisions recorded in ROADMAP.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw
2026-10-04 11:33:39 +02:00

70 lines
2.2 KiB
C#

using Microsoft.Extensions.Logging.Abstractions;
using PrivaPub.Infrastructure.Geo;
using PrivaPub.Infrastructure.Http;
using PrivaPub.Infrastructure.Statistics;
using PrivaPub.Tests.Support;
using System.Net;
namespace PrivaPub.Tests.Infrastructure
{
public class GeoLocatorTests
{
static DbIpLocator Locator(string directory) =>
new(new StaticOptions<StatisticsOptions>(new StatisticsOptions { GeoDirectory = directory }), NullLogger<DbIpLocator>.Instance);
[Fact]
public void Without_databases_nothing_is_located()
{
using var locator = Locator(Path.Combine(Path.GetTempPath(), $"no-geo-{Guid.NewGuid():N}"));
Assert.Null(locator.Locate(IPAddress.Parse("1.1.1.1")));
Assert.Null(locator.Source);
}
[Fact]
public void A_private_address_is_never_looked_up()
{
using var locator = Locator(Path.GetTempPath());
Assert.Null(locator.Locate(IPAddress.Parse("10.1.2.3")));
Assert.Null(locator.Locate(IPAddress.Loopback));
Assert.Null(locator.Locate(default));
}
[Fact]
public void The_real_databases_give_a_country_a_city_and_a_network()
{
var directory = Environment.GetEnvironmentVariable("PRIVAPUB_TEST_GEO");
Assert.SkipWhen(string.IsNullOrEmpty(directory), "set PRIVAPUB_TEST_GEO to a directory holding the DB-IP Lite city and ASN files");
using var locator = Locator(directory);
var fix = locator.Locate(IPAddress.Parse("1.1.1.1"));
Assert.NotNull(fix);
Assert.Equal(2, fix.Country.Length);
Assert.Equal(13335, fix.Asn);
Assert.Equal("Cloudflare", CdnCatalog.OfAsn(fix.Asn)?.Name);
Assert.NotNull(fix.AsnOrg);
Assert.NotNull(fix.Latitude);
Assert.Equal(Math.Round(fix.Latitude.Value, 1), fix.Latitude);
Assert.StartsWith("DB-IP Lite ", locator.Source);
}
[Fact]
public void A_connection_remembers_its_address_as_ipv4()
{
var connected = new ConnectedAddresses();
connected.Remember("Social.Example", IPAddress.Parse("::ffff:203.0.113.7"));
Assert.Equal(IPAddress.Parse("203.0.113.7"), connected.Of("social.example"));
Assert.Null(connected.Of("other.example"));
Assert.Equal("Fastly", CdnCatalog.OfAsn(54113)?.Name);
Assert.Null(CdnCatalog.OfAsn(64496));
Assert.Null(CdnCatalog.OfAsn(default));
}
}
}