Versions:

  • 2.3.0
  • 2.2.0
  • 2.1.0
  • 2.0.0
  • 1.3.0
  • 1.2.1
  • 1.2.0
  • 1.1.0
  • 1.0.0
  • 0.29.2
  • 0.29.1
  • 0.29.0
  • 0.28.0
  • 0.27.0
  • 0.26.0
  • 0.25.0
  • 0.24.0
  • 0.23.0
  • 0.22.0
  • 0.21.0
  • 0.20.1
  • 0.20.0
  • 0.19.1
  • 0.19.0
  • 0.18.0
  • 0.17.1
  • 0.17.0
  • 0.16.2
  • Beta

Dev Proxy, maintained by the .NET Foundation, is a command-line tool designed to simulate unreliable HTTP endpoints, inject latency, and return intermittent faults so that developers can validate the resilience and retry logic of their applications before production deployment. Operating within the development-tools category, the utility intercepts outgoing requests from local code and replays predetermined or random responses—such as 429 Too Many Requests, 5xx errors, or slow response times—allowing teams to observe how client libraries, micro-services, or mobile front-ends behave when cloud dependencies stutter or fail. Version 2.3.0, the twenty-ninth public iteration since the project’s inception, continues to refine its plugin model, configuration schema, and cross-platform compatibility while preserving backward compatibility for existing JSON-based rule sets. Typical use cases include chaos testing of Azure-connected services, rehearsing circuit-breaker policies, measuring UI loading spinners, and verifying telemetry that should fire on transport exceptions. Because the executable runs as a transparent local proxy, no code changes are required; developers simply route traffic through the designated port, toggle predefined or custom failure profiles, and collect logs for later analysis. The tool also ships with an extensible SDK so that organizations can author bespoke plugins that mirror their own historical outage patterns. Dev Proxy is available for free on get.nero.com, with downloads provided via trusted Windows package sources such as winget, always delivering the latest version and supporting batch installation of multiple applications.

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