fix(nodes): locate agents behind a proxy and retry missing countries [CI]

backend/tests/MoShiro.Backend.Tests/ClientAddressTests.cs

@@ -48,4 +48,12 @@ public sealed class ClientAddressTests
     [Fact]
     public void AMalformedTrustedProxyEntry_FailsAtStartup() =>
         Assert.Throws<InvalidOperationException>(() => new ClientAddressResolver(new BackendOptions { TrustedProxies = "banana" }));
+
+    [Fact]
+    public void TheFleetLinkAsksTheSameResolver_SoANodeBehindAProxyKeepsItsRealAddress()
+    {
+        Fleet.Server.IClientAddressSource source = new ClientAddressResolver(new BackendOptions { TrustedProxies = "127.0.0.1" });
+        Assert.Equal("198.51.100.7", source.Resolve(IPAddress.Parse("127.0.0.1"), _ => ["198.51.100.7"]));
+        Assert.Equal("203.0.113.9", source.Resolve(IPAddress.Parse("203.0.113.9"), _ => ["198.51.100.7"]));
+    }
 }