Zoltán Papp a72e0e67e5 Optimize Windows DNS performance with domain batching and batch mode ...

Implement two-layer optimization to reduce Windows NRPT registry operations:

1. Domain Batching (host_windows.go):
  - Batch up to 50 domains per NRPT rule (Windows undocumented limit)
  - Reduces NRPT rules by ~97% (e.g., 184 domains: 184 rules → 4 rules)
  - Modified addDNSMatchPolicy() to create batched NRPT entries
  - Added comprehensive tests in host_windows_test.go

2. Batch Mode (server.go):
  - Added BeginBatch/EndBatch methods to defer DNS updates
  - Modified RegisterHandler/DeregisterHandler to skip applyHostConfig in batch mode
  - Protected all applyHostConfig() calls with batch mode checks
  - Updated route manager to wrap route operations with batch calls

2026-02-03 00:15:04 +01:00

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