ethr: init at 1.0.0-unstable-2025-12-10

Ethr is a comprehensive network performance measurement tool that operates in three distinct modes:

*   **Server Mode** (`-s`)
    *   Runs Ethr as a server listener to accept incoming connections for performance tests.
    *   Supports binding to specific IPs and ports.
    *   Includes a Text UI (`-ui`) option and an option to exit after handling a single client connection (similar to iPerf3 behavior) for precise synchronization.

*   **Client Mode** (`-c <server>`)
    *   Connects to an Ethr server to perform comprehensive performance benchmarks.
    *   **Supported Protocols:** TCP, UDP, HTTP, HTTPS, and ICMP.
    *   **Measurement Capabilities:**
        *   **Bandwidth:** Measure throughput with options for throttling (`-b`), buffer length (`-l`), and reverse direction (`-r`).
        *   **Connections/s:** Benchmark connection establishment rates.
        *   **Packets/s:** Measure packet processing rates.
        *   **Latency & Loss:** Detailed analysis of latency, packet loss, and jitter.
    *   **Diagnostics:** Supports TraceRoute and MyTraceRoute (MTR).
    *   Supports multi-threaded parallel sessions (`-n`).

*   **External Mode** (`-x <destination>`)
    *   Allows Ethr to test against non-Ethr endpoints (standard URLs or Host:Port combinations).
    *   **Use Cases:** Testing connectivity against public websites or standard services (e.g., `www.microsoft.com:443`).
    *   **Supported Tests:**
        *   **TCP/ICMP:** Connection establishment rates and connectivity checks.
        *   **Ping:** Loss and latency measurements.
        *   **TraceRoute:** Standard and MTR-style path analysis.

pkgs/by-name/et/ethr/package.nix

@@ -0,0 +1,33 @@
+{
+  lib,
+  buildGoModule,
+  fetchFromGitHub,
+}:
+
+buildGoModule {
+  pname = "ethr";
+  version = "1.0.0-unstable-2025-12-10";
+
+  src = fetchFromGitHub {
+    owner = "microsoft";
+    repo = "ethr";
+    rev = "86e07049d11357f69da89317d55f11bed62e0007";
+    hash = "sha256-lkhqPq2EDI3J8jiNx0Gygf8fDZvtZ2Pw3rRSt4HVBq8=";
+  };
+
+  vendorHash = "sha256-UHZNe6vlqdYaHzt2IZ5HTQxqR0sf8m9Lfo5tXvpiFlg=";
+
+  # Strip symbol table and DWARF debug info to reduce binary size
+  ldflags = [
+    "-s"
+    "-w"
+  ];
+
+  meta = {
+    description = "Comprehensive Network Measurement Tool for TCP, UDP & ICMP";
+    homepage = "https://github.com/microsoft/ethr";
+    license = lib.licenses.mit;
+    maintainers = [ lib.maintainers.philiptaron ];
+    mainProgram = "ethr";
+  };
+}