Rust VoIP - Janus Media Server #2: Setup Janus Media Server

- Sử dụng base image debian:bookworm
- Cài đặt các package cần thiết để build Janus
- Clone source từ Janus Gateway v1.4.0 trên GitHub
- Build và đưa output vào thư mục /opt/janus

- Copy artifact từ build stage sang runtime
- Giảm dung lượng image (~800MB)
- Mở các port quan trọng:
+ 8088 (REST API)
+ 8188 (WebSocket)
+ 9898 (Admin API)

# =========================================================
# BUILD STAGE
# =========================================================
FROM debian:bookworm AS builder
ENV DEBIAN_FRONTEND=noninteractive

RUN apt-get update && apt-get install -y \
    build-essential \
    git \
    pkg-config \
    libtool \
    automake \
    autoconf \
    cmake \
    wget \
    curl \
    gengetopt \
    libmicrohttpd-dev \
    libjansson-dev \
    libssl-dev \
    libsrtp2-dev \
    libsofia-sip-ua-dev \
    libglib2.0-dev \
    libopus-dev \
    libogg-dev \
    libcurl4-openssl-dev \
    liblua5.3-dev \
    libconfig-dev \
    libnice-dev \
    libwebsockets-dev \
    libavcodec-dev \
    libavformat-dev \
    libavutil-dev \
    libavfilter-dev \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /usr/src

# Clone Janus v1.4.0
RUN git clone --branch v1.4.0 --depth 1 https://github.com/meetecho/janus-gateway.git janus

WORKDIR /usr/src/janus

# Build Janus
RUN sh autogen.sh && \
    ./configure \
      --prefix=/opt/janus \
      --enable-websockets \
     # --enable-data-channels \
      --enable-rest \
      --enable-post-processing && \
    make -j$(nproc) && \
    make install && \
    make configs

# Debug: check binary deps
RUN echo "===== LDD CHECK FOR JANUS =====" && ldd /opt/janus/bin/janus


# =========================================================
# RUNTIME STAGE
# =========================================================
FROM debian:bookworm
ENV DEBIAN_FRONTEND=noninteractive

RUN apt-get update && apt-get install -y \
    libmicrohttpd12 \
    libjansson4 \
    libssl3 \
    libsrtp2-1 \
    libsofia-sip-ua0 \
    libglib2.0-0 \
    libopus0 \
    libogg0 \
    libcurl4 \
    liblua5.3-0 \
    libconfig9 \
    libnice10 \
    libwebsockets17 \
    libavcodec59 \
    libavformat59 \
    libavutil57 \
    libavfilter8 \
    ca-certificates \
    && rm -rf /var/lib/apt/lists/*

# Copy Janus runtime
COPY --from=builder /opt/janus /opt/janus

# Runtime dirs
RUN mkdir -p /var/log/janus /var/run/janus

EXPOSE 8088 8188 8989
EXPOSE 50000-60000/udp

WORKDIR /opt/janus

ENTRYPOINT ["/opt/janus/bin/janus"]
CMD ["-F", "/opt/janus/etc/janus"]

Build:

docker build -t janus:1.1 .

services:
  janus:
    image: janus:1.1
    container_name: janus
    network_mode: host
    restart: unless-stopped

    entrypoint: ["/opt/janus/bin/janus"]
    command:
      - "janus"
      - "--config=/opt/janus/etc/janus/janus.jcfg"
      - "--debug-level=4"

    environment:
      - TZ=Asia/Saigon
      - JANUS_LOG_LEVEL=4

    volumes:
      - ./config:/opt/janus/etc/janus:ro
      - ./log:/opt/janus/log:rw
      - ./recordings:/opt/janus/recordings:rw
      - ./souds:/opt/janus/souds:rw

    cap_add:
      - SYS_NICE
      - SYS_RESOURCE
      - NET_ADMIN

    expose:
      - "8088/tcp"   # Janus HTTP API
      - "8188/tcp"   # Janus WebSocket
      - "8989/tcp"   # Janus Admin API
      # RTP/RTCP UDP ports fpr WebRTC media
      - "50000-60000/udp"

- Sử dụng network_mode: host để tối ưu media
- Quản lý dải port UDP lớn (50000–60000)
- Mount volumes:
+ Config
+ Recordings
+ Sounds

- Thiết lập API Secret & Admin Secret
- Enable WebSocket transport
- Cấu hình NAT & ICE Candidate
- Giới thiệu AudioBridge plugin cho conference

- Cài đặt thành công Janus Media Server bằng Docker
- Có hệ thống Media Server chạy ổn định trên VPS
- Sẵn sàng tích hợp với Rust backend trong các bài tiếp theo

https://github.com/bytebuffer-voip/janus-setup