initial commit

.github/workflows/deploy.yml

@@ -0,0 +1,41 @@
+name: Build and deploy to ghcr.io
+
+on:
+  workflow_dispatch:
+    inputs:
+      reason:
+        required: true
+        description: 'Reason for running this workflow'
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - '**.md'
+
+jobs:
+  build:
+    name: 'Build'
+    runs-on: ubuntu-latest
+    steps:
+    - name: "Build:checkout"
+      uses: actions/checkout@v3
+
+    - name: "Build:qemu"
+      uses: docker/setup-qemu-action@v2
+
+    - name: "Build:buildx"
+      uses: docker/setup-buildx-action@v2
+
+    - name: "Build:login"
+      uses: docker/login-action@v1
+      with:
+        registry: ghcr.io
+        username: ${{ github.repository_owner }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: 'Build:buildandpush'
+      uses: docker/build-push-action@v3.0.0
+      with:
+        push: true
+        platforms: linux/amd64,linux/arm/v7,linux/arm64
+        tags: ghcr.io/${{ github.repository }}:latest,ghcr.io/${{ github.repository }}:${{ github.run_number }}-${{ github.sha }}

Dockerfile

@@ -0,0 +1,35 @@
+FROM ghcr.io/sdr-enthusiasts/docker-baseimage:base
+
+SHELL ["/bin/bash", "-o", "pipefail", "-c"]
+
+# hadolint ignore=DL3008,SC2086,DL4006,SC2039
+RUN set -x && \
+    TEMP_PACKAGES=() && \
+    KEPT_PACKAGES=() && \
+    # packages needed to install
+    TEMP_PACKAGES+=(git) && \
+    # packages needed to build
+    TEMP_PACKAGES+=(build-essential) && \
+    # install packages
+    apt-get update && \
+    apt-get install -y --no-install-recommends \
+        "${KEPT_PACKAGES[@]}" \
+        "${TEMP_PACKAGES[@]}" && \
+    # Deploy rtlmuxer
+    git clone https://github.com/rpatel3001/rtlmuxer.git /src/rtlmuxer && \
+    pushd /src/rtlmuxer && \
+    make && \
+    cp rtlmuxer /usr/local/bin && \
+    popd && \
+    # Clean up
+    apt-get remove -y "${TEMP_PACKAGES[@]}" && \
+    apt-get autoremove -y && \
+    rm -rf /src/* /tmp/* /var/lib/apt/lists/*
+
+COPY rootfs/ /
+
+ENV SRC_ADDR="" \
+    SRC_PORT="1234" \
+    SINK_ADDR="0.0.0.0" \
+    RW_SINK_PORT="7373" \
+    RO_SINK_PORT="7374"

README.md

@@ -1,2 +1,32 @@
 # docker-rtlmuxer
 Proxy rtl_tcp compatible streams to allow for multiple clients.
+
+This container is a thin wrapper around [rpatel3001/rtlmuxer](https://github.com/rpatel3001/rtlmuxer), which is a slightly modified fork of [alexander-sholohov/rtlmuxer](https://github.com/alexander-sholohov/rtlmuxer).
+
+## Docker Compose Snippet
+
+```
+  rtlmuxer:
+    container_name: rtlmuxer
+    hostname: rtlmuxer
+    image: ghcr.io/rpatel3001/docker-rtlmuxer
+    restart: always
+    ports:
+      - 7373:7373
+      - 7374:7374
+    volumes:
+      - /etc/timezone:/etc/timezone:ro
+      - /etc/localtime:/etc/localtime:ro
+    environment:
+      - SRC_ADDR=x.x.x.x
+```
+
+## Configuration options
+
+| Variable | Description | Default |
+|----------|-------------|---------|
+| `SRC_ADDR` | Address of the rtl_tcp source we are proxying. | Unset |
+| `SRC_PORT` | Port of the rtl_tcp source we are proxying. | 1234 |
+| `SINK_ADDR` | Address to bind for the proxied connections. | 0.0.0.0 |
+| `RW_SINK_PORT` | Port to bind for the read/write proxy connection. | 7373 |
+| `RO_SINK_PORT` | Port to bind for the read-only proxy connection. | 7374 |

rootfs/etc/services.d/rtlmuxer/run

@@ -0,0 +1,4 @@
+#!/usr/bin/with-contenv bash
+#shellcheck shell=bash
+
+rtlmuxer --src-address=$SRC_ADDR --src-port=$SRC_PORT --sink-bind-address=$SINK_ADDR --sink-bind-port-a=$RW_SINK_PORT --sink-bind-port-b=$RO_SINK_PORT 2>&1 | stdbuf -o0 awk '{print "[rtlmuxer] " strftime("%Y/%m/%d %H:%M:%S", systime()) " " $0}'