Initial working implementation of HLS proxy

2025-10-01 02:40:12 +05:00
commit 3bc563955f
29 changed files with 1594 additions and 0 deletions
--- a/.env
+++ b/.env
@ -0,0 +1,2 @@
+EUREKA_SCHEMA=http
+EUREKA_HOST=anyame-vue-bff:8080
--- a/.gitattributes
+++ b/.gitattributes
@ -0,0 +1,2 @@
+/mvnw text eol=lf
+*.cmd text eol=crlf
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,33 @@
+HELP.md
+target/
+.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
--- a/.mvn/wrapper/maven-wrapper.properties
+++ b/.mvn/wrapper/maven-wrapper.properties
@ -0,0 +1,3 @@
+wrapperVersion=3.3.4
+distributionType=only-script
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.11/apache-maven-3.9.11-bin.zip
--- a/Dockerfile.prod
+++ b/Dockerfile.prod
@ -0,0 +1,50 @@
+# Build
+FROM maven:3.9.6-eclipse-temurin-21 AS builder
+WORKDIR /workspace
+COPY pom.xml .
+RUN --mount=type=cache,target=/root/.m2 mvn dependency:go-offline -B
+COPY src ./src
+RUN --mount=type=cache,target=/root/.m2 mvn clean package -DskipTests
+
+# Create optimized runtime
+FROM eclipse-temurin:21 AS app-build
+ENV RELEASE=21
+
+WORKDIR /opt/build
+COPY --from=builder /workspace/target/*.jar ./application.jar
+
+RUN java -Djarmode=layertools -jar application.jar extract
+RUN $JAVA_HOME/bin/jlink \
+    --add-modules $(jdeps --ignore-missing-deps -q -recursive --multi-release ${RELEASE} --print-module-deps -cp 'dependencies/BOOT-INF/lib/*' application.jar),jdk.crypto.ec,jdk.security.auth,jdk.crypto.cryptoki \
+    --strip-debug \
+    --no-man-pages \
+    --no-header-files \
+    --compress=2 \
+    --output jdk
+
+# Run
+FROM debian:bookworm-slim
+
+ARG BUILD_PATH=/opt/build
+ENV JAVA_HOME=/opt/jdk
+ENV PATH="${JAVA_HOME}/bin:${PATH}"
+
+RUN groupadd --gid 1000 spring-app \
+    && useradd --uid 1000 --gid spring-app --shell /bin/bash --create-home spring-app
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends ca-certificates && \
+    rm -rf /var/lib/apt/lists/*
+
+USER spring-app:spring-app
+WORKDIR /opt/workspace
+
+COPY --from=app-build $BUILD_PATH/jdk $JAVA_HOME
+COPY --from=app-build $BUILD_PATH/spring-boot-loader/ ./
+COPY --from=app-build $BUILD_PATH/dependencies/ ./
+COPY --from=app-build $BUILD_PATH/snapshot-dependencies/ ./
+COPY --from=app-build $BUILD_PATH/application/ ./
+
+EXPOSE 8080/tcp
+ENTRYPOINT ["java", "org.springframework.boot.loader.launch.JarLauncher"]
+
--- a/bin/pom.xml
+++ b/bin/pom.xml
@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>3.5.6</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+	<groupId>com.backend.hls.proxy</groupId>
+	<artifactId>hls-proxy</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>hls-proxy</name>
+	<description>HLS Proxy with prefetching</description>
+	<url/>
+	<licenses>
+		<license/>
+	</licenses>
+	<developers>
+		<developer/>
+	</developers>
+	<scm>
+		<connection/>
+		<developerConnection/>
+		<tag/>
+		<url/>
+	</scm>
+	<properties>
+		<java.version>21</java.version>
+		<spring-cloud.version>2025.0.0</spring-cloud.version>
+	</properties>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-redis</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-rest</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+	<dependencyManagement>
+		<dependencies>
+			<dependency>
+				<groupId>org.springframework.cloud</groupId>
+				<artifactId>spring-cloud-dependencies</artifactId>
+				<version>${spring-cloud.version}</version>
+				<type>pom</type>
+				<scope>import</scope>
+			</dependency>
+		</dependencies>
+	</dependencyManagement>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>
--- a/compose.yml
+++ b/compose.yml
@ -0,0 +1,20 @@
+services:
+  redis:
+    image: redis:alpine
+    networks:
+      - anyame-shared
+
+  hls-proxy:
+    image: hls-proxy:latest
+    env_file: .env
+    ports:
+      - 8082:8080
+    networks:
+      - anyame-shared
+      - elk-network
+
+networks:
+  anyame-shared:
+    external: true
+  elk-network:
+    external: true
--- a/295
+++ b/295
@ -0,0 +1,295 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Apache Maven Wrapper startup batch script, version 3.3.4
+#
+# Optional ENV vars
+# -----------------
+#   JAVA_HOME - location of a JDK home dir, required when download maven via java source
+#   MVNW_REPOURL - repo url base for downloading maven distribution
+#   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+#   MVNW_VERBOSE - true: enable verbose log; debug: trace the mvnw script; others: silence the output
+# ----------------------------------------------------------------------------
+
+set -euf
+[ "${MVNW_VERBOSE-}" != debug ] || set -x
+
+# OS specific support.
+native_path() { printf %s\\n "$1"; }
+case "$(uname)" in
+CYGWIN* | MINGW*)
+  [ -z "${JAVA_HOME-}" ] || JAVA_HOME="$(cygpath --unix "$JAVA_HOME")"
+  native_path() { cygpath --path --windows "$1"; }
+  ;;
+esac
+
+# set JAVACMD and JAVACCMD
+set_java_home() {
+  # For Cygwin and MinGW, ensure paths are in Unix format before anything is touched
+  if [ -n "${JAVA_HOME-}" ]; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ]; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+      JAVACCMD="$JAVA_HOME/jre/sh/javac"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+      JAVACCMD="$JAVA_HOME/bin/javac"
+
+      if [ ! -x "$JAVACMD" ] || [ ! -x "$JAVACCMD" ]; then
+        echo "The JAVA_HOME environment variable is not defined correctly, so mvnw cannot run." >&2
+        echo "JAVA_HOME is set to \"$JAVA_HOME\", but \"\$JAVA_HOME/bin/java\" or \"\$JAVA_HOME/bin/javac\" does not exist." >&2
+        return 1
+      fi
+    fi
+  else
+    JAVACMD="$(
+      'set' +e
+      'unset' -f command 2>/dev/null
+      'command' -v java
+    )" || :
+    JAVACCMD="$(
+      'set' +e
+      'unset' -f command 2>/dev/null
+      'command' -v javac
+    )" || :
+
+    if [ ! -x "${JAVACMD-}" ] || [ ! -x "${JAVACCMD-}" ]; then
+      echo "The java/javac command does not exist in PATH nor is JAVA_HOME set, so mvnw cannot run." >&2
+      return 1
+    fi
+  fi
+}
+
+# hash string like Java String::hashCode
+hash_string() {
+  str="${1:-}" h=0
+  while [ -n "$str" ]; do
+    char="${str%"${str#?}"}"
+    h=$(((h * 31 + $(LC_CTYPE=C printf %d "'$char")) % 4294967296))
+    str="${str#?}"
+  done
+  printf %x\\n $h
+}
+
+verbose() { :; }
+[ "${MVNW_VERBOSE-}" != true ] || verbose() { printf %s\\n "${1-}"; }
+
+die() {
+  printf %s\\n "$1" >&2
+  exit 1
+}
+
+trim() {
+  # MWRAPPER-139:
+  #   Trims trailing and leading whitespace, carriage returns, tabs, and linefeeds.
+  #   Needed for removing poorly interpreted newline sequences when running in more
+  #   exotic environments such as mingw bash on Windows.
+  printf "%s" "${1}" | tr -d '[:space:]'
+}
+
+scriptDir="$(dirname "$0")"
+scriptName="$(basename "$0")"
+
+# parse distributionUrl and optional distributionSha256Sum, requires .mvn/wrapper/maven-wrapper.properties
+while IFS="=" read -r key value; do
+  case "${key-}" in
+  distributionUrl) distributionUrl=$(trim "${value-}") ;;
+  distributionSha256Sum) distributionSha256Sum=$(trim "${value-}") ;;
+  esac
+done <"$scriptDir/.mvn/wrapper/maven-wrapper.properties"
+[ -n "${distributionUrl-}" ] || die "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties"
+
+case "${distributionUrl##*/}" in
+maven-mvnd-*bin.*)
+  MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/
+  case "${PROCESSOR_ARCHITECTURE-}${PROCESSOR_ARCHITEW6432-}:$(uname -a)" in
+  *AMD64:CYGWIN* | *AMD64:MINGW*) distributionPlatform=windows-amd64 ;;
+  :Darwin*x86_64) distributionPlatform=darwin-amd64 ;;
+  :Darwin*arm64) distributionPlatform=darwin-aarch64 ;;
+  :Linux*x86_64*) distributionPlatform=linux-amd64 ;;
+  *)
+    echo "Cannot detect native platform for mvnd on $(uname)-$(uname -m), use pure java version" >&2
+    distributionPlatform=linux-amd64
+    ;;
+  esac
+  distributionUrl="${distributionUrl%-bin.*}-$distributionPlatform.zip"
+  ;;
+maven-mvnd-*) MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ ;;
+*) MVN_CMD="mvn${scriptName#mvnw}" _MVNW_REPO_PATTERN=/org/apache/maven/ ;;
+esac
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
+[ -z "${MVNW_REPOURL-}" ] || distributionUrl="$MVNW_REPOURL$_MVNW_REPO_PATTERN${distributionUrl#*"$_MVNW_REPO_PATTERN"}"
+distributionUrlName="${distributionUrl##*/}"
+distributionUrlNameMain="${distributionUrlName%.*}"
+distributionUrlNameMain="${distributionUrlNameMain%-bin}"
+MAVEN_USER_HOME="${MAVEN_USER_HOME:-${HOME}/.m2}"
+MAVEN_HOME="${MAVEN_USER_HOME}/wrapper/dists/${distributionUrlNameMain-}/$(hash_string "$distributionUrl")"
+
+exec_maven() {
+  unset MVNW_VERBOSE MVNW_USERNAME MVNW_PASSWORD MVNW_REPOURL || :
+  exec "$MAVEN_HOME/bin/$MVN_CMD" "$@" || die "cannot exec $MAVEN_HOME/bin/$MVN_CMD"
+}
+
+if [ -d "$MAVEN_HOME" ]; then
+  verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+  exec_maven "$@"
+fi
+
+case "${distributionUrl-}" in
+*?-bin.zip | *?maven-mvnd-?*-?*.zip) ;;
+*) die "distributionUrl is not valid, must match *-bin.zip or maven-mvnd-*.zip, but found '${distributionUrl-}'" ;;
+esac
+
+# prepare tmp dir
+if TMP_DOWNLOAD_DIR="$(mktemp -d)" && [ -d "$TMP_DOWNLOAD_DIR" ]; then
+  clean() { rm -rf -- "$TMP_DOWNLOAD_DIR"; }
+  trap clean HUP INT TERM EXIT
+else
+  die "cannot create temp dir"
+fi
+
+mkdir -p -- "${MAVEN_HOME%/*}"
+
+# Download and Install Apache Maven
+verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+verbose "Downloading from: $distributionUrl"
+verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+# select .zip or .tar.gz
+if ! command -v unzip >/dev/null; then
+  distributionUrl="${distributionUrl%.zip}.tar.gz"
+  distributionUrlName="${distributionUrl##*/}"
+fi
+
+# verbose opt
+__MVNW_QUIET_WGET=--quiet __MVNW_QUIET_CURL=--silent __MVNW_QUIET_UNZIP=-q __MVNW_QUIET_TAR=''
+[ "${MVNW_VERBOSE-}" != true ] || __MVNW_QUIET_WGET='' __MVNW_QUIET_CURL='' __MVNW_QUIET_UNZIP='' __MVNW_QUIET_TAR=v
+
+# normalize http auth
+case "${MVNW_PASSWORD:+has-password}" in
+'') MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+has-password) [ -n "${MVNW_USERNAME-}" ] || MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+esac
+
+if [ -z "${MVNW_USERNAME-}" ] && command -v wget >/dev/null; then
+  verbose "Found wget ... using wget"
+  wget ${__MVNW_QUIET_WGET:+"$__MVNW_QUIET_WGET"} "$distributionUrl" -O "$TMP_DOWNLOAD_DIR/$distributionUrlName" || die "wget: Failed to fetch $distributionUrl"
+elif [ -z "${MVNW_USERNAME-}" ] && command -v curl >/dev/null; then
+  verbose "Found curl ... using curl"
+  curl ${__MVNW_QUIET_CURL:+"$__MVNW_QUIET_CURL"} -f -L -o "$TMP_DOWNLOAD_DIR/$distributionUrlName" "$distributionUrl" || die "curl: Failed to fetch $distributionUrl"
+elif set_java_home; then
+  verbose "Falling back to use Java to download"
+  javaSource="$TMP_DOWNLOAD_DIR/Downloader.java"
+  targetZip="$TMP_DOWNLOAD_DIR/$distributionUrlName"
+  cat >"$javaSource" <<-END
+	public class Downloader extends java.net.Authenticator
+	{
+	  protected java.net.PasswordAuthentication getPasswordAuthentication()
+	  {
+	    return new java.net.PasswordAuthentication( System.getenv( "MVNW_USERNAME" ), System.getenv( "MVNW_PASSWORD" ).toCharArray() );
+	  }
+	  public static void main( String[] args ) throws Exception
+	  {
+	    setDefault( new Downloader() );
+	    java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() );
+	  }
+	}
+	END
+  # For Cygwin/MinGW, switch paths to Windows format before running javac and java
+  verbose " - Compiling Downloader.java ..."
+  "$(native_path "$JAVACCMD")" "$(native_path "$javaSource")" || die "Failed to compile Downloader.java"
+  verbose " - Running Downloader.java ..."
+  "$(native_path "$JAVACMD")" -cp "$(native_path "$TMP_DOWNLOAD_DIR")" Downloader "$distributionUrl" "$(native_path "$targetZip")"
+fi
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+if [ -n "${distributionSha256Sum-}" ]; then
+  distributionSha256Result=false
+  if [ "$MVN_CMD" = mvnd.sh ]; then
+    echo "Checksum validation is not supported for maven-mvnd." >&2
+    echo "Please disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+    exit 1
+  elif command -v sha256sum >/dev/null; then
+    if echo "$distributionSha256Sum  $TMP_DOWNLOAD_DIR/$distributionUrlName" | sha256sum -c - >/dev/null 2>&1; then
+      distributionSha256Result=true
+    fi
+  elif command -v shasum >/dev/null; then
+    if echo "$distributionSha256Sum  $TMP_DOWNLOAD_DIR/$distributionUrlName" | shasum -a 256 -c >/dev/null 2>&1; then
+      distributionSha256Result=true
+    fi
+  else
+    echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available." >&2
+    echo "Please install either command, or disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+    exit 1
+  fi
+  if [ $distributionSha256Result = false ]; then
+    echo "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised." >&2
+    echo "If you updated your Maven version, you need to update the specified distributionSha256Sum property." >&2
+    exit 1
+  fi
+fi
+
+# unzip and move
+if command -v unzip >/dev/null; then
+  unzip ${__MVNW_QUIET_UNZIP:+"$__MVNW_QUIET_UNZIP"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -d "$TMP_DOWNLOAD_DIR" || die "failed to unzip"
+else
+  tar xzf${__MVNW_QUIET_TAR:+"$__MVNW_QUIET_TAR"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -C "$TMP_DOWNLOAD_DIR" || die "failed to untar"
+fi
+
+# Find the actual extracted directory name (handles snapshots where filename != directory name)
+actualDistributionDir=""
+
+# First try the expected directory name (for regular distributions)
+if [ -d "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" ]; then
+  if [ -f "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain/bin/$MVN_CMD" ]; then
+    actualDistributionDir="$distributionUrlNameMain"
+  fi
+fi
+
+# If not found, search for any directory with the Maven executable (for snapshots)
+if [ -z "$actualDistributionDir" ]; then
+  # enable globbing to iterate over items
+  set +f
+  for dir in "$TMP_DOWNLOAD_DIR"/*; do
+    if [ -d "$dir" ]; then
+      if [ -f "$dir/bin/$MVN_CMD" ]; then
+        actualDistributionDir="$(basename "$dir")"
+        break
+      fi
+    fi
+  done
+  set -f
+fi
+
+if [ -z "$actualDistributionDir" ]; then
+  verbose "Contents of $TMP_DOWNLOAD_DIR:"
+  verbose "$(ls -la "$TMP_DOWNLOAD_DIR")"
+  die "Could not find Maven distribution directory in extracted archive"
+fi
+
+verbose "Found extracted Maven distribution directory: $actualDistributionDir"
+printf %s\\n "$distributionUrl" >"$TMP_DOWNLOAD_DIR/$actualDistributionDir/mvnw.url"
+mv -- "$TMP_DOWNLOAD_DIR/$actualDistributionDir" "$MAVEN_HOME" || [ -d "$MAVEN_HOME" ] || die "fail to move MAVEN_HOME"
+
+clean || :
+exec_maven "$@"
--- a/mvnw.cmd
+++ b/mvnw.cmd
@ -0,0 +1,189 @@
+<# : batch portion
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Apache Maven Wrapper startup batch script, version 3.3.4
+@REM
+@REM Optional ENV vars
+@REM   MVNW_REPOURL - repo url base for downloading maven distribution
+@REM   MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+@REM   MVNW_VERBOSE - true: enable verbose log; others: silence the output
+@REM ----------------------------------------------------------------------------
+
+@IF "%__MVNW_ARG0_NAME__%"=="" (SET __MVNW_ARG0_NAME__=%~nx0)
+@SET __MVNW_CMD__=
+@SET __MVNW_ERROR__=
+@SET __MVNW_PSMODULEP_SAVE=%PSModulePath%
+@SET PSModulePath=
+@FOR /F "usebackq tokens=1* delims==" %%A IN (`powershell -noprofile "& {$scriptDir='%~dp0'; $script='%__MVNW_ARG0_NAME__%'; icm -ScriptBlock ([Scriptblock]::Create((Get-Content -Raw '%~f0'))) -NoNewScope}"`) DO @(
+  IF "%%A"=="MVN_CMD" (set __MVNW_CMD__=%%B) ELSE IF "%%B"=="" (echo %%A) ELSE (echo %%A=%%B)
+)
+@SET PSModulePath=%__MVNW_PSMODULEP_SAVE%
+@SET __MVNW_PSMODULEP_SAVE=
+@SET __MVNW_ARG0_NAME__=
+@SET MVNW_USERNAME=
+@SET MVNW_PASSWORD=
+@IF NOT "%__MVNW_CMD__%"=="" ("%__MVNW_CMD__%" %*)
+@echo Cannot start maven from wrapper >&2 && exit /b 1
+@GOTO :EOF
+: end batch / begin powershell #>
+
+$ErrorActionPreference = "Stop"
+if ($env:MVNW_VERBOSE -eq "true") {
+  $VerbosePreference = "Continue"
+}
+
+# calculate distributionUrl, requires .mvn/wrapper/maven-wrapper.properties
+$distributionUrl = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionUrl
+if (!$distributionUrl) {
+  Write-Error "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties"
+}
+
+switch -wildcard -casesensitive ( $($distributionUrl -replace '^.*/','') ) {
+  "maven-mvnd-*" {
+    $USE_MVND = $true
+    $distributionUrl = $distributionUrl -replace '-bin\.[^.]*$',"-windows-amd64.zip"
+    $MVN_CMD = "mvnd.cmd"
+    break
+  }
+  default {
+    $USE_MVND = $false
+    $MVN_CMD = $script -replace '^mvnw','mvn'
+    break
+  }
+}
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-<version>,maven-mvnd-<version>-<platform>}/<hash>
+if ($env:MVNW_REPOURL) {
+  $MVNW_REPO_PATTERN = if ($USE_MVND -eq $False) { "/org/apache/maven/" } else { "/maven/mvnd/" }
+  $distributionUrl = "$env:MVNW_REPOURL$MVNW_REPO_PATTERN$($distributionUrl -replace "^.*$MVNW_REPO_PATTERN",'')"
+}
+$distributionUrlName = $distributionUrl -replace '^.*/',''
+$distributionUrlNameMain = $distributionUrlName -replace '\.[^.]*$','' -replace '-bin$',''
+
+$MAVEN_M2_PATH = "$HOME/.m2"
+if ($env:MAVEN_USER_HOME) {
+  $MAVEN_M2_PATH = "$env:MAVEN_USER_HOME"
+}
+
+if (-not (Test-Path -Path $MAVEN_M2_PATH)) {
+    New-Item -Path $MAVEN_M2_PATH -ItemType Directory | Out-Null
+}
+
+$MAVEN_WRAPPER_DISTS = $null
+if ((Get-Item $MAVEN_M2_PATH).Target[0] -eq $null) {
+  $MAVEN_WRAPPER_DISTS = "$MAVEN_M2_PATH/wrapper/dists"
+} else {
+  $MAVEN_WRAPPER_DISTS = (Get-Item $MAVEN_M2_PATH).Target[0] + "/wrapper/dists"
+}
+
+$MAVEN_HOME_PARENT = "$MAVEN_WRAPPER_DISTS/$distributionUrlNameMain"
+$MAVEN_HOME_NAME = ([System.Security.Cryptography.SHA256]::Create().ComputeHash([byte[]][char[]]$distributionUrl) | ForEach-Object {$_.ToString("x2")}) -join ''
+$MAVEN_HOME = "$MAVEN_HOME_PARENT/$MAVEN_HOME_NAME"
+
+if (Test-Path -Path "$MAVEN_HOME" -PathType Container) {
+  Write-Verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+  Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
+  exit $?
+}
+
+if (! $distributionUrlNameMain -or ($distributionUrlName -eq $distributionUrlNameMain)) {
+  Write-Error "distributionUrl is not valid, must end with *-bin.zip, but found $distributionUrl"
+}
+
+# prepare tmp dir
+$TMP_DOWNLOAD_DIR_HOLDER = New-TemporaryFile
+$TMP_DOWNLOAD_DIR = New-Item -Itemtype Directory -Path "$TMP_DOWNLOAD_DIR_HOLDER.dir"
+$TMP_DOWNLOAD_DIR_HOLDER.Delete() | Out-Null
+trap {
+  if ($TMP_DOWNLOAD_DIR.Exists) {
+    try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+    catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+  }
+}
+
+New-Item -Itemtype Directory -Path "$MAVEN_HOME_PARENT" -Force | Out-Null
+
+# Download and Install Apache Maven
+Write-Verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+Write-Verbose "Downloading from: $distributionUrl"
+Write-Verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+$webclient = New-Object System.Net.WebClient
+if ($env:MVNW_USERNAME -and $env:MVNW_PASSWORD) {
+  $webclient.Credentials = New-Object System.Net.NetworkCredential($env:MVNW_USERNAME, $env:MVNW_PASSWORD)
+}
+[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
+$webclient.DownloadFile($distributionUrl, "$TMP_DOWNLOAD_DIR/$distributionUrlName") | Out-Null
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+$distributionSha256Sum = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionSha256Sum
+if ($distributionSha256Sum) {
+  if ($USE_MVND) {
+    Write-Error "Checksum validation is not supported for maven-mvnd. `nPlease disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties."
+  }
+  Import-Module $PSHOME\Modules\Microsoft.PowerShell.Utility -Function Get-FileHash
+  if ((Get-FileHash "$TMP_DOWNLOAD_DIR/$distributionUrlName" -Algorithm SHA256).Hash.ToLower() -ne $distributionSha256Sum) {
+    Write-Error "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised. If you updated your Maven version, you need to update the specified distributionSha256Sum property."
+  }
+}
+
+# unzip and move
+Expand-Archive "$TMP_DOWNLOAD_DIR/$distributionUrlName" -DestinationPath "$TMP_DOWNLOAD_DIR" | Out-Null
+
+# Find the actual extracted directory name (handles snapshots where filename != directory name)
+$actualDistributionDir = ""
+
+# First try the expected directory name (for regular distributions)
+$expectedPath = Join-Path "$TMP_DOWNLOAD_DIR" "$distributionUrlNameMain"
+$expectedMvnPath = Join-Path "$expectedPath" "bin/$MVN_CMD"
+if ((Test-Path -Path $expectedPath -PathType Container) -and (Test-Path -Path $expectedMvnPath -PathType Leaf)) {
+  $actualDistributionDir = $distributionUrlNameMain
+}
+
+# If not found, search for any directory with the Maven executable (for snapshots)
+if (!$actualDistributionDir) {
+  Get-ChildItem -Path "$TMP_DOWNLOAD_DIR" -Directory | ForEach-Object {
+    $testPath = Join-Path $_.FullName "bin/$MVN_CMD"
+    if (Test-Path -Path $testPath -PathType Leaf) {
+      $actualDistributionDir = $_.Name
+    }
+  }
+}
+
+if (!$actualDistributionDir) {
+  Write-Error "Could not find Maven distribution directory in extracted archive"
+}
+
+Write-Verbose "Found extracted Maven distribution directory: $actualDistributionDir"
+Rename-Item -Path "$TMP_DOWNLOAD_DIR/$actualDistributionDir" -NewName $MAVEN_HOME_NAME | Out-Null
+try {
+  Move-Item -Path "$TMP_DOWNLOAD_DIR/$MAVEN_HOME_NAME" -Destination $MAVEN_HOME_PARENT | Out-Null
+} catch {
+  if (! (Test-Path -Path "$MAVEN_HOME" -PathType Container)) {
+    Write-Error "fail to move MAVEN_HOME"
+  }
+} finally {
+  try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+  catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+}
+
+Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
--- a/pom.xml
+++ b/pom.xml
@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.5.6</version>
+        <relativePath /> <!-- lookup parent from repository -->
+    </parent>
+    <groupId>com.backend.hls.proxy</groupId>
+    <artifactId>hls-proxy</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>hls-proxy</name>
+    <description>HLS Proxy with prefetching</description>
+    <url />
+    <licenses>
+        <license />
+    </licenses>
+    <developers>
+        <developer />
+    </developers>
+    <scm>
+        <connection />
+        <developerConnection />
+        <tag />
+        <url />
+    </scm>
+    <properties>
+        <java.version>21</java.version>
+
+        <spring-cloud.version>2025.0.0</spring-cloud.version>
+        <caffeine.version>3.2.2</caffeine.version>
+        <jedis.version>6.2.0</jedis.version>
+        <m3u8-parser.version>0.30</m3u8-parser.version>
+        <springdoc-openapi-starter.version>2.8.9</springdoc-openapi-starter.version>
+        <spring-dotenv.version>4.0.0</spring-dotenv.version>
+        <spring-context-support.version>6.2.11</spring-context-support.version>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-redis</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-cache</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>redis.clients</groupId>
+            <artifactId>jedis</artifactId>
+            <version>${jedis.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.github.ben-manes.caffeine</groupId>
+            <artifactId>caffeine</artifactId>
+            <version>${caffeine.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-rest</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springdoc</groupId>
+            <artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
+            <version>${springdoc-openapi-starter.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>me.paulschwarz</groupId>
+            <artifactId>spring-dotenv</artifactId>
+            <version>${spring-dotenv.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>io.lindstrom</groupId>
+            <artifactId>m3u8-parser</artifactId>
+            <version>${m3u8-parser.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context-support</artifactId>
+            <version>${spring-context-support.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.springframework.cloud</groupId>
+                <artifactId>spring-cloud-dependencies</artifactId>
+                <version>${spring-cloud.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
--- a/src/main/java/com/backend/hls/proxy/HlsProxyApplication.java
+++ b/src/main/java/com/backend/hls/proxy/HlsProxyApplication.java
@ -0,0 +1,13 @@
+package com.backend.hls.proxy;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class HlsProxyApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(HlsProxyApplication.class, args);
+	}
+
+}
--- a/src/main/java/com/backend/hls/proxy/config/CacheConfig.java
+++ b/src/main/java/com/backend/hls/proxy/config/CacheConfig.java
@ -0,0 +1,18 @@
+package com.backend.hls.proxy.config;
+
+import org.springframework.cache.CacheManager;
+import org.springframework.cache.annotation.EnableCaching;
+import org.springframework.cache.caffeine.CaffeineCacheManager;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@EnableCaching
+public class CacheConfig {
+
+    @Bean
+    public CacheManager cacheManager() {
+        return new CaffeineCacheManager("hlsPlaylistContent", "playlistSegmentContent");
+    }
+
+}
--- a/src/main/java/com/backend/hls/proxy/config/ParserConfig.java
+++ b/src/main/java/com/backend/hls/proxy/config/ParserConfig.java
@ -0,0 +1,22 @@
+package com.backend.hls.proxy.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import io.lindstrom.m3u8.parser.MediaPlaylistParser;
+import io.lindstrom.m3u8.parser.MultivariantPlaylistParser;
+import io.lindstrom.m3u8.parser.ParsingMode;
+
+@Configuration
+public class ParserConfig {
+
+    @Bean
+    public MultivariantPlaylistParser multivariantParser() {
+        return new MultivariantPlaylistParser(ParsingMode.LENIENT);
+    }
+
+    @Bean
+    public MediaPlaylistParser mediaParser() {
+        return new MediaPlaylistParser(ParsingMode.LENIENT);
+    }
+}
--- a/src/main/java/com/backend/hls/proxy/config/RedisConfig.java
+++ b/src/main/java/com/backend/hls/proxy/config/RedisConfig.java
@ -0,0 +1,24 @@
+package com.backend.hls.proxy.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.connection.RedisStandaloneConfiguration;
+import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
+import org.springframework.data.redis.core.RedisTemplate;
+
+@Configuration
+public class RedisConfig {
+    @Bean
+    public JedisConnectionFactory jedisConnectionFactory() {
+        RedisStandaloneConfiguration config = new RedisStandaloneConfiguration("redis");
+        return new JedisConnectionFactory(config);
+    }
+
+    @Bean
+    public RedisTemplate<String, Object> redisTemplate() {
+        RedisTemplate<String, Object> template = new RedisTemplate<>();
+        template.setConnectionFactory(jedisConnectionFactory());
+        return template;
+    }
+
+}
--- a/src/main/java/com/backend/hls/proxy/config/RetrieverConfig.java
+++ b/src/main/java/com/backend/hls/proxy/config/RetrieverConfig.java
@ -0,0 +1,20 @@
+package com.backend.hls.proxy.config;
+
+import java.net.http.HttpClient;
+import java.net.http.HttpClient.Redirect;
+import java.time.Duration;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class RetrieverConfig {
+    @Bean
+    public HttpClient httpClient() {
+        return HttpClient.newBuilder()
+                .followRedirects(Redirect.NORMAL)
+                .connectTimeout(Duration.ofSeconds(10))
+                .build();
+
+    }
+}
--- a/src/main/java/com/backend/hls/proxy/controller/ProxyController.java
+++ b/src/main/java/com/backend/hls/proxy/controller/ProxyController.java
@ -0,0 +1,30 @@
+package com.backend.hls.proxy.controller;
+
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.servlet.support.ServletUriComponentsBuilder;
+
+import com.backend.hls.proxy.exception.FetchFailException;
+import com.backend.hls.proxy.exception.PlaylistParseException;
+import com.backend.hls.proxy.service.PlaylistProxyService;
+
+@RestController
+public class ProxyController {
+
+    private final PlaylistProxyService playlistProxyService;
+
+    public ProxyController(PlaylistProxyService playlistProxyService) {
+        this.playlistProxyService = playlistProxyService;
+    }
+
+    @GetMapping("/proxy")
+    public ResponseEntity<?> proxy(@RequestParam("url") String url) throws FetchFailException, PlaylistParseException {
+        String fullUrl = ServletUriComponentsBuilder.fromCurrentRequestUri().build().toUriString();
+        String baseUrl = fullUrl.substring(0, fullUrl.indexOf("/", 8));
+        String result = playlistProxyService.proxyPlaylist(url, baseUrl);
+        return ResponseEntity.ok(result);
+    }
+
+}
--- a/src/main/java/com/backend/hls/proxy/controller/ProxyServeController.java
+++ b/src/main/java/com/backend/hls/proxy/controller/ProxyServeController.java
@ -0,0 +1,118 @@
+package com.backend.hls.proxy.controller;
+
+import java.io.IOException;
+import java.net.URI;
+import java.util.Optional;
+
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestHeader;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.backend.hls.proxy.exception.FetchFailException;
+import com.backend.hls.proxy.exception.PlaylistParseException;
+import com.backend.hls.proxy.model.Link;
+import com.backend.hls.proxy.model.RangeRequest;
+import com.backend.hls.proxy.model.SimpleResponse;
+import com.backend.hls.proxy.repository.LinkRepository;
+import com.backend.hls.proxy.service.FetchService;
+
+@RestController
+public class ProxyServeController {
+    private final LinkRepository linkRepository;
+    private final ProxyController proxyController;
+    private final FetchService fetchService;
+
+    public ProxyServeController(LinkRepository linkRepository, ProxyController proxyController,
+            FetchService fetchService) {
+        this.linkRepository = linkRepository;
+        this.proxyController = proxyController;
+        this.fetchService = fetchService;
+    }
+
+    @GetMapping("/proxy/{id}")
+    public ResponseEntity<?> proxy(
+            @PathVariable("id") String id,
+            @RequestHeader(value = "Range", required = false) String rangeHeader) {
+        if (id.contains("."))
+            id = id.substring(0, id.lastIndexOf("."));
+        Optional<Link> link = linkRepository.findById(id);
+        if (link.isEmpty()) {
+            return ResponseEntity.notFound().build();
+        }
+        String url = link.get().getUrl();
+        if (url.contains(".m3u8")) {
+            try {
+                return proxyController.proxy(url);
+            } catch (FetchFailException | PlaylistParseException e) {
+                e.printStackTrace();
+                return redirect(url);
+            }
+        }
+        try {
+            if (rangeHeader == null) {
+                return handleFullRequest(url);
+            } else {
+                return handleRangeRequest(url, rangeHeader);
+            }
+        } catch (IOException | InterruptedException | FetchFailException e) {
+            e.printStackTrace();
+            return redirect(url);
+        }
+    }
+
+    private ResponseEntity<?> handleFullRequest(String url)
+            throws IOException, InterruptedException, FetchFailException {
+        SimpleResponse<byte[]> response = fetchService.fetchBinaryContent(url);
+        HttpHeaders headers = new HttpHeaders();
+        response.getHeaders().map().forEach((key, values) -> {
+            headers.addAll(key, values);
+        });
+        return new ResponseEntity<>(response.getBody(), headers, HttpStatus.OK);
+    }
+
+    private ResponseEntity<?> handleRangeRequest(String url, String rangeHeader)
+            throws IOException, InterruptedException, FetchFailException {
+
+        long contentLength = fetchService.getContentLength(url);
+        if (contentLength <= 0) {
+            return handleFullRequest(url);
+        }
+
+        RangeRequest range = RangeRequest.parse(rangeHeader, contentLength);
+        if (range == null) {
+            // Invalid range, return 416 Range Not Satisfiable
+            HttpHeaders headers = new HttpHeaders();
+            headers.add("Content-Range", "bytes */" + contentLength);
+            return new ResponseEntity<>(headers, HttpStatus.REQUESTED_RANGE_NOT_SATISFIABLE);
+        }
+
+        String rangeHeaderToSend = String.format("bytes=%d-%d",
+                range.getStart(), range.getEnd());
+        SimpleResponse<byte[]> response = fetchService.fetchBinaryContent(url, rangeHeaderToSend);
+
+        HttpHeaders headers = new HttpHeaders();
+        response.getHeaders().map().forEach((key, values) -> {
+            // Don't copy certain headers
+            if (!key.equalsIgnoreCase("Transfer-Encoding") &&
+                    !key.equalsIgnoreCase("Connection")) {
+                headers.addAll(key, values);
+            }
+        });
+
+        headers.add("Content-Range", range.toContentRangeHeader());
+        headers.add("Accept-Ranges", "bytes");
+        headers.setContentLength(range.getLength());
+
+        return new ResponseEntity<>(response.getBody(), headers, HttpStatus.PARTIAL_CONTENT);
+    }
+
+    private ResponseEntity<?> redirect(String target) {
+        HttpHeaders headers = new HttpHeaders();
+        headers.setLocation(URI.create(target));
+        return new ResponseEntity<>(headers, HttpStatus.MOVED_PERMANENTLY);
+    }
+}
--- a/src/main/java/com/backend/hls/proxy/exception/FetchFailException.java
+++ b/src/main/java/com/backend/hls/proxy/exception/FetchFailException.java
@ -0,0 +1,17 @@
+package com.backend.hls.proxy.exception;
+
+import java.net.http.HttpResponse;
+
+public class FetchFailException extends Exception {
+    private final HttpResponse<?> response;
+
+    public FetchFailException(String message, HttpResponse<?> response) {
+        super(message);
+        this.response = response;
+    }
+
+    public HttpResponse<?> getResponse() {
+        return response;
+    }
+
+}
--- a/src/main/java/com/backend/hls/proxy/exception/PlaylistParseException.java
+++ b/src/main/java/com/backend/hls/proxy/exception/PlaylistParseException.java
@ -0,0 +1,7 @@
+package com.backend.hls.proxy.exception;
+
+public class PlaylistParseException extends Exception {
+    public PlaylistParseException(String message, Exception e) {
+        super(message, e);
+    }
+}
--- a/src/main/java/com/backend/hls/proxy/model/Link.java
+++ b/src/main/java/com/backend/hls/proxy/model/Link.java
@ -0,0 +1,40 @@
+package com.backend.hls.proxy.model;
+
+import java.io.Serializable;
+import java.time.Duration;
+import java.util.concurrent.TimeUnit;
+
+import org.springframework.data.annotation.Id;
+import org.springframework.data.redis.core.RedisHash;
+import org.springframework.data.redis.core.TimeToLive;
+import org.springframework.data.redis.core.index.Indexed;
+
+@RedisHash("hls-link")
+public class Link implements Serializable {
+    private static final Duration TTL = Duration.ofDays(1);
+
+    @Id
+    private String id;
+    @TimeToLive(unit = TimeUnit.SECONDS)
+    private Long expirationSeconds;
+    @Indexed
+    private String url;
+
+    Link() {
+    }
+
+    public Link(String id, String url) {
+        this.id = id;
+        this.url = url;
+        this.expirationSeconds = TTL.toSeconds();
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public String getUrl() {
+        return url;
+    }
+
+}
--- a/src/main/java/com/backend/hls/proxy/model/RangeRequest.java
+++ b/src/main/java/com/backend/hls/proxy/model/RangeRequest.java
@ -0,0 +1,74 @@
+package com.backend.hls.proxy.model;
+
+public class RangeRequest {
+    private final long start;
+    private final long end;
+    private final long total;
+
+    public RangeRequest(long start, long end, long total) {
+        this.start = start;
+        this.end = end;
+        this.total = total;
+    }
+
+    public static RangeRequest parse(String rangeHeader, long contentLength) {
+        if (rangeHeader == null || !rangeHeader.startsWith("bytes=")) {
+            return null;
+        }
+
+        try {
+            String range = rangeHeader.substring(6); // Remove "bytes="
+            String[] parts = range.split("-");
+
+            long start = 0;
+            long end = contentLength - 1;
+
+            if (parts.length == 1) {
+                if (range.startsWith("-")) {
+                    // Last N bytes
+                    long suffix = Long.parseLong(parts[0]);
+                    start = Math.max(0, contentLength + suffix);
+                } else {
+                    // From start to end
+                    start = Long.parseLong(parts[0]);
+                }
+            } else if (parts.length == 2) {
+                // Range: bytes=500-999
+                start = Long.parseLong(parts[0]);
+                if (!parts[1].isEmpty()) {
+                    end = Long.parseLong(parts[1]);
+                }
+            }
+
+            if (start > end || start >= contentLength) {
+                return null;
+            }
+
+            end = Math.min(end, contentLength - 1);
+            return new RangeRequest(start, end, contentLength);
+
+        } catch (NumberFormatException e) {
+            return null;
+        }
+    }
+
+    public long getStart() {
+        return start;
+    }
+
+    public long getEnd() {
+        return end;
+    }
+
+    public long getTotal() {
+        return total;
+    }
+
+    public long getLength() {
+        return end - start + 1;
+    }
+
+    public String toContentRangeHeader() {
+        return String.format("bytes %d-%d/%d", start, end, total);
+    }
+}
--- a/src/main/java/com/backend/hls/proxy/model/SimpleResponse.java
+++ b/src/main/java/com/backend/hls/proxy/model/SimpleResponse.java
@ -0,0 +1,22 @@
+package com.backend.hls.proxy.model;
+
+import java.net.http.HttpHeaders;
+
+public class SimpleResponse<T> {
+    private final T body;
+    private final HttpHeaders headers;
+
+    public SimpleResponse(T body, HttpHeaders headers) {
+        this.body = body;
+        this.headers = headers;
+    }
+
+    public T getBody() {
+        return body;
+    }
+
+    public HttpHeaders getHeaders() {
+        return headers;
+    }
+
+}
--- a/src/main/java/com/backend/hls/proxy/repository/LinkRepository.java
+++ b/src/main/java/com/backend/hls/proxy/repository/LinkRepository.java
@ -0,0 +1,13 @@
+package com.backend.hls.proxy.repository;
+
+import java.util.Optional;
+
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.stereotype.Repository;
+
+import com.backend.hls.proxy.model.Link;
+
+@Repository
+public interface LinkRepository extends CrudRepository<Link, String> {
+    Optional<Link> findFirstByUrl(String url);
+}
--- a/src/main/java/com/backend/hls/proxy/service/FetchService.java
+++ b/src/main/java/com/backend/hls/proxy/service/FetchService.java
@ -0,0 +1,107 @@
+package com.backend.hls.proxy.service;
+
+import java.io.IOException;
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.time.Duration;
+
+import org.springframework.cache.annotation.Cacheable;
+import org.springframework.stereotype.Service;
+
+import com.backend.hls.proxy.exception.FetchFailException;
+import com.backend.hls.proxy.model.SimpleResponse;
+
+@Service
+public class FetchService {
+    private final HttpClient httpClient;
+
+    public FetchService(HttpClient httpClient) {
+        this.httpClient = httpClient;
+    }
+
+    /**
+     * Fetch text content from URL
+     * 
+     * @throws FetchFailException
+     */
+    @Cacheable("hlsPlaylistContent")
+    public String fetchTextContent(String url) throws IOException, InterruptedException, FetchFailException {
+        HttpRequest request = HttpRequest.newBuilder()
+                .uri(URI.create(url))
+                .build();
+
+        HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
+
+        if (response.statusCode() != 200) {
+            throw new FetchFailException("Failed to fetch content from " + url + ", status: " + response.statusCode(),
+                    response);
+        }
+
+        return response.body();
+    }
+
+    /**
+     * Fetch binary content from URL
+     * 
+     * @throws FetchFailException
+     */
+    @Cacheable("playlistSegmentContent")
+    public SimpleResponse<byte[]> fetchBinaryContent(String url)
+            throws IOException, InterruptedException, FetchFailException {
+        return fetchBinaryContent(url, null);
+    }
+
+    /**
+     * Fetch binary content from URL
+     * 
+     * @throws FetchFailException
+     */
+    @Cacheable("playlistSegmentContent")
+    public SimpleResponse<byte[]> fetchBinaryContent(String url, String rangeHeader)
+            throws IOException, InterruptedException, FetchFailException {
+        HttpRequest.Builder builder = HttpRequest.newBuilder()
+                .uri(URI.create(url));
+
+        if (rangeHeader != null && !rangeHeader.isEmpty()) {
+            builder.header("Range", rangeHeader);
+        }
+
+        HttpResponse<byte[]> response = httpClient.send(builder.build(), HttpResponse.BodyHandlers.ofByteArray());
+
+        if (response.statusCode() >= 400) {
+            throw new FetchFailException("Failed to fetch content from " + url + ", status: " + response.statusCode(),
+                    response);
+        }
+
+        return new SimpleResponse<byte[]>(response.body(), response.headers());
+    }
+
+    /**
+     * Fetch content length
+     *
+     * @throws FetchFailException
+     */
+    public long getContentLength(String url)
+            throws IOException, InterruptedException, FetchFailException {
+
+        HttpRequest request = HttpRequest.newBuilder()
+                .uri(URI.create(url))
+                .method("HEAD", HttpRequest.BodyPublishers.noBody())
+                .timeout(Duration.ofSeconds(10))
+                .build();
+
+        HttpResponse<Void> response = httpClient.send(request,
+                HttpResponse.BodyHandlers.discarding());
+
+        if (response.statusCode() >= 400) {
+            throw new FetchFailException("HTTP " + response.statusCode(), response);
+        }
+
+        return response.headers()
+                .firstValueAsLong("Content-Length")
+                .orElse(-1L);
+    }
+
+}
--- a/src/main/java/com/backend/hls/proxy/service/PlaylistParseService.java
+++ b/src/main/java/com/backend/hls/proxy/service/PlaylistParseService.java
@ -0,0 +1,52 @@
+package com.backend.hls.proxy.service;
+
+import java.io.IOException;
+
+import org.springframework.stereotype.Service;
+
+import com.backend.hls.proxy.exception.FetchFailException;
+import com.backend.hls.proxy.exception.PlaylistParseException;
+
+import io.lindstrom.m3u8.model.MediaPlaylist;
+import io.lindstrom.m3u8.model.MultivariantPlaylist;
+import io.lindstrom.m3u8.parser.MediaPlaylistParser;
+import io.lindstrom.m3u8.parser.MultivariantPlaylistParser;
+
+@Service
+public class PlaylistParseService {
+    private final FetchService fetchService;
+    private final MultivariantPlaylistParser playlistParser;
+    private final MediaPlaylistParser mediaParser;
+
+    public PlaylistParseService(FetchService fetchService, MultivariantPlaylistParser playlistParser,
+            MediaPlaylistParser mediaParser) {
+        this.fetchService = fetchService;
+        this.playlistParser = playlistParser;
+        this.mediaParser = mediaParser;
+    }
+
+    public MultivariantPlaylist readMultivariantPlaylist(String m3u8URL)
+            throws PlaylistParseException, FetchFailException {
+        try {
+            return playlistParser.readPlaylist(fetchService.fetchTextContent(m3u8URL));
+        } catch (IOException | InterruptedException e) {
+            throw new PlaylistParseException("Failed to read playlist from " + m3u8URL, e);
+        }
+    }
+
+    public MediaPlaylist readMediaPlaylist(String m3u8URL) throws PlaylistParseException, FetchFailException {
+        try {
+            return mediaParser.readPlaylist(fetchService.fetchTextContent(m3u8URL));
+        } catch (IOException | InterruptedException e) {
+            throw new PlaylistParseException("Failed to read playlist from " + m3u8URL, e);
+        }
+    }
+
+    public String writeAsString(MultivariantPlaylist proxiedPlaylist) {
+        return playlistParser.writePlaylistAsString(proxiedPlaylist);
+    }
+
+    public String writeAsString(MediaPlaylist proxiedPlaylist) {
+        return mediaParser.writePlaylistAsString(proxiedPlaylist);
+    }
+}
--- a/src/main/java/com/backend/hls/proxy/service/PlaylistProxyService.java
+++ b/src/main/java/com/backend/hls/proxy/service/PlaylistProxyService.java
@ -0,0 +1,170 @@
+package com.backend.hls.proxy.service;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Service;
+
+import com.backend.hls.proxy.exception.FetchFailException;
+import com.backend.hls.proxy.exception.PlaylistParseException;
+
+import io.lindstrom.m3u8.model.AlternativeRendition;
+import io.lindstrom.m3u8.model.MediaPlaylist;
+import io.lindstrom.m3u8.model.MediaSegment;
+import io.lindstrom.m3u8.model.MultivariantPlaylist;
+import io.lindstrom.m3u8.model.PartialSegment;
+import io.lindstrom.m3u8.model.SegmentMap;
+import io.lindstrom.m3u8.model.Variant;
+
+@Service
+public class PlaylistProxyService {
+    private static final Logger logger = LoggerFactory.getLogger(PlaylistProxyService.class);
+    private final PlaylistParseService playlistParseService;
+    private final URLForwardService urlForwardService;
+
+    public PlaylistProxyService(PlaylistParseService playlistParseService, URLForwardService urlForwardService) {
+        this.playlistParseService = playlistParseService;
+        this.urlForwardService = urlForwardService;
+    }
+
+    public String proxyPlaylist(String hlsUrl, String proxyUrl)
+            throws FetchFailException {
+        String base = hlsUrl.substring(0, hlsUrl.lastIndexOf('/') + 1);
+        String suffix = hlsUrl.substring(hlsUrl.lastIndexOf('/') + 1);
+        String url = base + suffix;
+        try {
+            MultivariantPlaylist playlist = playlistParseService.readMultivariantPlaylist(url);
+
+            List<Variant> variants = playlist.variants()
+                    .stream()
+                    .map(variant -> proxyVariant(variant, base, proxyUrl))
+                    .collect(Collectors.toList());
+            List<AlternativeRendition> alternativeRenditions = playlist.alternativeRenditions()
+                    .stream()
+                    .map(rendition -> proxyRendition(rendition, base, proxyUrl))
+                    .collect(Collectors.toList());
+
+            MultivariantPlaylist proxiedPlaylist = MultivariantPlaylist.builder()
+                    .from(playlist)
+                    .variants(variants)
+                    .alternativeRenditions(alternativeRenditions)
+                    .build();
+            return playlistParseService.writeAsString(proxiedPlaylist);
+        } catch (PlaylistParseException e) {
+        }
+        try {
+            MediaPlaylist playlist = playlistParseService.readMediaPlaylist(url);
+
+            List<MediaSegment> mediaSegments = playlist.mediaSegments()
+                    .stream()
+                    .map(segment -> proxySegment(segment, base, proxyUrl))
+                    .collect(Collectors.toList());
+
+            List<PartialSegment> partialSegments = playlist.partialSegments()
+                    .stream()
+                    .map(segment -> proxyPartialSegment(segment, base, proxyUrl))
+                    .collect(Collectors.toList());
+
+            logger.info("media playlist " + playlist.variables() + " " + playlist.partialSegmentInformation());
+            mediaSegments.forEach(segment -> logger.info("segment map " + segment.segmentMap()));
+
+            MediaPlaylist proxiedPlaylist = MediaPlaylist.builder()
+                    .from(playlist)
+                    .mediaSegments(mediaSegments)
+                    .partialSegments(partialSegments)
+                    .build();
+
+            return playlistParseService.writeAsString(proxiedPlaylist);
+        } catch (PlaylistParseException e) {
+            e.printStackTrace();
+        }
+        throw new IllegalStateException("Unknown playlist format");
+    }
+
+    /**
+     * Process a variant and rewrite its URI
+     */
+    private Variant proxyVariant(Variant variant, String base, String proxyUrl) {
+        if (variant.uri() == null) {
+            logger.error("cannot proxy variant: {}", variant);
+            return variant;
+        }
+        String variantUri = base + variant.uri();
+        String proxiedUri = urlForwardService.createForwarded(variantUri);
+        return Variant.builder()
+                .from(variant)
+                .uri(proxiedUri)
+                .build();
+    }
+
+    /**
+     * Process a rendition and rewrite its URI
+     */
+    private AlternativeRendition proxyRendition(AlternativeRendition rendition, String base, String proxyUrl) {
+        if (rendition.uri().isEmpty()) {
+            return rendition;
+        }
+        String renditionUri = base + rendition.uri().get();
+        String proxiedUri = urlForwardService.createForwarded(renditionUri);
+        return AlternativeRendition.builder()
+                .from(rendition)
+                .uri(proxiedUri)
+                .build();
+    }
+
+    /**
+     * Process a segment and rewrite its URI
+     */
+    private MediaSegment proxySegment(MediaSegment segment, String base, String proxyUrl) {
+        if (segment.uri() == null) {
+            logger.error("cannot proxy segment: {}", segment);
+            return segment;
+        }
+
+        String segmentUri = base + segment.uri();
+        String proxiedUri = urlForwardService.createForwarded(segmentUri);
+
+        MediaSegment.Builder builder = MediaSegment.builder()
+                .from(segment)
+                .uri(proxiedUri);
+        if (segment.segmentMap().isPresent()) {
+            builder.segmentMap(proxySegmentMap(segment.segmentMap().get(), base, proxyUrl));
+        }
+        return builder.build();
+    }
+
+    /**
+     * Process a partial segment and rewrite its URI
+     */
+    private PartialSegment proxyPartialSegment(PartialSegment segment, String base, String proxyUrl) {
+        if (segment.uri() == null) {
+            logger.error("cannot proxy segment: {}", segment);
+            return segment;
+        }
+        String segmentUri = base + segment.uri();
+        String proxiedUri = urlForwardService.createForwarded(segmentUri);
+        return PartialSegment.builder()
+                .from(segment)
+                .uri(proxiedUri)
+                .build();
+    }
+
+    /**
+     * Process a segment map and rewrite its URI
+     */
+    private SegmentMap proxySegmentMap(SegmentMap segmentMap, String base, String proxyUrl) {
+        if (segmentMap.uri() == null) {
+            logger.error("cannot proxy segment: {}", segmentMap);
+            return segmentMap;
+        }
+        String segmentMapUri = base + segmentMap.uri();
+        String proxiedUri = urlForwardService.createForwarded(segmentMapUri);
+        return SegmentMap.builder()
+                .from(segmentMap)
+                .uri(proxiedUri)
+                .build();
+    }
+
+}
--- a/src/main/java/com/backend/hls/proxy/service/URLForwardService.java
+++ b/src/main/java/com/backend/hls/proxy/service/URLForwardService.java
@ -0,0 +1,39 @@
+package com.backend.hls.proxy.service;
+
+import java.util.Optional;
+import java.util.UUID;
+
+import org.springframework.stereotype.Service;
+
+import com.backend.hls.proxy.model.Link;
+import com.backend.hls.proxy.repository.LinkRepository;
+
+@Service
+public class URLForwardService {
+    private final LinkRepository linkRepository;
+
+    public URLForwardService(LinkRepository linkRepository) {
+        this.linkRepository = linkRepository;
+    }
+
+    public String createForwarded(String originalUrl) {
+        String suffix = "";
+        if (originalUrl.contains(".")) {
+            suffix = originalUrl.substring(originalUrl.lastIndexOf("."));
+        }
+
+        Optional<Link> existingLink = linkRepository.findFirstByUrl(originalUrl);
+        if (existingLink.isPresent()) {
+            return wrapId(existingLink.get().getId() + suffix);
+        }
+        UUID uuid = UUID.randomUUID();
+        linkRepository.save(new Link(uuid.toString(), originalUrl));
+
+        return wrapId(uuid.toString() + suffix);
+    }
+
+    private String wrapId(String id) {
+        return "/proxy/" + id;
+    }
+
+}
--- a/src/main/resources/application.properties
+++ b/src/main/resources/application.properties
@ -0,0 +1,3 @@
+spring.application.name=hls-proxy
+eureka.client.serviceUrl.defaultZone: ${EUREKA_SCHEMA}://${EUREKA_HOST}/eureka/
+
--- a/src/test/java/com/backend/hls/proxy/HlsProxyApplicationTests.java
+++ b/src/test/java/com/backend/hls/proxy/HlsProxyApplicationTests.java
@ -0,0 +1,13 @@
+package com.backend.hls.proxy;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class HlsProxyApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}