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feat: harden gateway reply remap and leaf loop transparency

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This commit is contained in:
Joseph Doherty
2026-02-23 14:40:07 -05:00
parent d83b37fec1
commit 958c4aa8ed
5 changed files with 70 additions and 10 deletions
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19
tests/NATS.Server.Tests/GatewayAdvancedRemapRuntimeTests.cs Normal file
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using NATS.Server.Gateways;
namespace NATS.Server.Tests;
public class GatewayAdvancedRemapRuntimeTests
{
[Fact]
public void Transport_internal_reply_and_loop_markers_never_leak_to_client_visible_subjects()
{
const string clientReply = "_INBOX.123";
var nested = ReplyMapper.ToGatewayReply(
ReplyMapper.ToGatewayReply(clientReply, "CLUSTER-A"),
"CLUSTER-B");
ReplyMapper.TryRestoreGatewayReply(nested, out var restored).ShouldBeTrue();
restored.ShouldBe(clientReply);
restored.ShouldNotStartWith("_GR_.");
}
}

18
tests/NATS.Server.Tests/LeafNodes/LeafLoopTransparencyRuntimeTests.cs Normal file
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using NATS.Server.LeafNodes;
namespace NATS.Server.Tests.LeafNodes;
public class LeafLoopTransparencyRuntimeTests
{
[Fact]
public void Transport_internal_reply_and_loop_markers_never_leak_to_client_visible_subjects()
{
var nested = LeafLoopDetector.Mark(
LeafLoopDetector.Mark("orders.created", "S1"),
"S2");
LeafLoopDetector.TryUnmark(nested, out var unmarked).ShouldBeTrue();
unmarked.ShouldBe("orders.created");
unmarked.ShouldNotStartWith("$LDS.");
}
}