tallarium/reverse_proxy_plug

ReverseProxyPlug is an Elixir library that provides a composable Plug for transparently proxying HTTP requests to upstream servers. It supports multiple HTTP client adapters, including Req, Finch, HTTPoison, and Tesla, allowing users to choose the backend that best fits their application's needs. The library offers flexible configuration options, such as dynamic upstream routing, custom HTTP methods, and configurable response modes (streaming or buffering). It also includes robust error handling, header normalization, and proper cookie management to ensure reliable proxying behavior.

Introduces ReverseProxyPlug, a composable Plug for transparently proxying requests to another URL with full programmatic control over outgoing requests. The library supports multiple HTTP client adapters (HTTPoison, Tesla, Finch, Req) and offers flexible configuration options including dynamic upstream routing via 1-arity functions, custom HTTP methods, host header preservation, configurable response modes (stream vs. buffer), and error callbacks for handling network issues.

(repo-wide) · high confidence

Users can now select from multiple HTTP client implementations (Finch, HTTPoison, Req, and Tesla) via a new adapter framework, allowing them to choose the backend that best fits their application's dependencies and performance needs. This change introduces native support for asynchronous response streaming in Req (0.5+), Tesla (1.9+), and HTTPoison, enabling efficient handling of large responses without buffering the entire body in memory. The Req adapter also includes specific fixes for header normalization and Set-Cookie handling to ensure compatibility and correctness across different Req versions.

_lib/reverse\_proxy\_plug/http\client · high confidence

The library now defines a dedicated \ReverseProxyPlug.HTTPClient\ behaviour, allowing users to implement custom HTTP clients for reverse proxy requests and optional streamed responses instead of relying on a hardcoded implementation.

_lib/reverse\_proxy\plug · high confidence

The application configuration has been updated to use the modern Config v2 syntax, replacing the deprecated Mix.Config module. This change aligns the project with current Elixir standards for configuration management, ensuring compatibility with newer versions of the language and its tooling.

config · high confidence

The ReverseProxyPlug module has been significantly refactored to support configurable HTTP clients (via the new HTTPClient alias) and flexible response handling. Users can now choose between buffered and streamed response modes, with optional status callbacks for streaming. The plug now supports dynamic upstream routing via 0- or 1-arity functions, allows custom HTTP methods, and normalizes headers by default. Error handling has been improved with support for both 1-arity and 2-arity error callbacks (including mfa tuples), and timeouts now correctly return a 504 Gateway Timeout status. The module also ensures proper cookie recycling and removes hop-by-hop headers from requests and responses.

lib · high confidence

Added test coverage for HTTP client adapters; Expanded test coverage for reverse proxy behavior and streaming; Migrate test mocking to Hammox and introduce test reuse macros.

This release updates the project to require Elixir 1.13 and bumps the version to 3.0.4. The dependency manifest now includes optional support for Req (0.3–0.5), Finch (0.18), HTTPoison (1.4–3.0), and Tesla (1.4), alongside dev/test tools like Credo, ExCoveralls, Hammox, and Dialyxir. The lockfile reflects these additions and updates, including specific versions for core dependencies like Plug (1.16.0) and Cowboy (2.12.0).

(dependencies) · high confidence

Written by watchdog.canine.dev from the codebase's own history, inside the signed delivery this page is composed from.

• CAI 66 → 65 (-0.8)
• Rubric changed (rubric-2026.09.15 → rubric-2026.10.1) — scores are not directly comparable.

• Code Health 100 → 100 (+0.0)
• Architecture 69 → 69 (+0.0)
• Maturity 57 → 57 (+0.8)
• Readiness 73 → 75 (+2.0)
• Security 80 → 68 (-11.9)

• Documentation: no architecture or design documentation (README.md)
• Documentation: no usage examples (README.md)

• End-of-life runtime: Elixir 1.13
• End-of-life runtime: Erlang/OTP 24

Written by watchdog.canine.dev from the codebase's own history, inside the signed delivery this page is composed from.

tallarium/reverse_proxy_plug was measured the same way every project in this corpus was: the same rubric, at a pinned commit, with the result published in full. Point a surveyor at a repository you know and see whether you agree with it.