diff --git a/samples/grpc-secure/README.md b/samples/grpc-secure/README.md
new file mode 100644
index 0000000..2e2ff0b
--- /dev/null
+++ b/samples/grpc-secure/README.md
@@ -0,0 +1,70 @@
+# Spring Boot gRPC Sample
+
+This project is a copy one of the samples from the [gRPC Spring Boot Starter](https://github.com/yidongnan/grpc-spring-boot-starter/blob/master/examples/local-grpc-server/build.gradle). Build and run any way you like to run Spring Boot. E.g:
+
+```
+$ ./mvnw spring-boot:run
+...
+ . ____ _ __ _ _
+ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
+( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
+ \\/ ___)| |_)| | | | | || (_| | ) ) ) )
+ ' |____| .__|_| |_|_| |_\__, | / / / /
+ =========|_|==============|___/=/_/_/_/
+ :: Spring Boot :: (v3.0.0)
+
+2022-12-08T05:32:24.934-08:00 INFO 551632 --- [ main] com.example.demo.DemoApplication : Starting DemoApplication using Java 17.0.5 with PID 551632 (/home/dsyer/dev/scratch/demo/target/classes started by dsyer in /home/dsyer/dev/scratch/demo)
+2022-12-08T05:32:24.938-08:00 INFO 551632 --- [ main] com.example.demo.DemoApplication : No active profile set, falling back to 1 default profile: "default"
+2022-12-08T05:32:25.377-08:00 WARN 551632 --- [ main] ocalVariableTableParameterNameDiscoverer : Using deprecated '-debug' fallback for parameter name resolution. Compile the affected code with '-parameters' instead or avoid its introspection: net.devh.boot.grpc.server.autoconfigure.GrpcHealthServiceAutoConfiguration
+2022-12-08T05:32:25.416-08:00 WARN 551632 --- [ main] ocalVariableTableParameterNameDiscoverer : Using deprecated '-debug' fallback for parameter name resolution. Compile the affected code with '-parameters' instead or avoid its introspection: net.devh.boot.grpc.server.autoconfigure.GrpcServerAutoConfiguration
+2022-12-08T05:32:25.425-08:00 WARN 551632 --- [ main] ocalVariableTableParameterNameDiscoverer : Using deprecated '-debug' fallback for parameter name resolution. Compile the affected code with '-parameters' instead or avoid its introspection: net.devh.boot.grpc.server.autoconfigure.GrpcServerFactoryAutoConfiguration
+2022-12-08T05:32:25.427-08:00 INFO 551632 --- [ main] g.s.a.GrpcServerFactoryAutoConfiguration : Detected grpc-netty: Creating NettyGrpcServerFactory
+2022-12-08T05:32:25.712-08:00 INFO 551632 --- [ main] n.d.b.g.s.s.AbstractGrpcServerFactory : Registered gRPC service: Simple, bean: grpcServerService, class: com.example.demo.GrpcServerService
+2022-12-08T05:32:25.712-08:00 INFO 551632 --- [ main] n.d.b.g.s.s.AbstractGrpcServerFactory : Registered gRPC service: grpc.health.v1.Health, bean: grpcHealthService, class: io.grpc.protobuf.services.HealthServiceImpl
+2022-12-08T05:32:25.712-08:00 INFO 551632 --- [ main] n.d.b.g.s.s.AbstractGrpcServerFactory : Registered gRPC service: grpc.reflection.v1alpha.ServerReflection, bean: protoReflectionService, class: io.grpc.protobuf.services.ProtoReflectionService
+2022-12-08T05:32:25.820-08:00 INFO 551632 --- [ main] n.d.b.g.s.s.GrpcServerLifecycle : gRPC Server started, listening on address: *, port: 9090
+2022-12-08T05:32:25.831-08:00 INFO 551632 --- [ main] com.example.demo.DemoApplication : Started DemoApplication in 1.264 seconds (process running for 1.623)
+```
+
+The server starts by default on port 9090. Test with [gRPCurl](https://github.com/fullstorydev/grpcurl). There is a B/S insecure channel that lets you authenticate by asserting in a header that you are a user:
+
+```
+$ grpcurl -H "X-User: user" -d '{"name":"Hi"}' -plaintext localhost:9090 Simple.SayHello
+{
+ "message": "Hello ==\u003e Hi"
+}
+```
+
+There is also an HTTP Basic authentication channel that requires a username and password (the user's password is the same as the username):
+
+```
+$ grpcurl -H "Authorization: Basic $(echo -n user:user | base64)" -d '{"name":"Hi"}' -plaintext localhost:9090 Simple.SayHello
+{
+ "message": "Hello ==\u003e Hi"
+}
+```
+
+## Native Image
+
+The app compiles to a native image if the JVM is GraalVM:
+
+```
+$ ./mvnw -Pnative native:compile
+$ ./target/demo
+ . ____ _ __ _ _
+ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
+( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
+ \\/ ___)| |_)| | | | | || (_| | ) ) ) )
+ ' |____| .__|_| |_|_| |_\__, | / / / /
+ =========|_|==============|___/=/_/_/_/
+ :: Spring Boot :: (v3.0.0)
+
+2022-12-08T05:36:54.365-08:00 INFO 554359 --- [ main] com.example.demo.DemoApplication : Starting AOT-processed DemoApplication using Java 17.0.5 with PID 554359 (/home/dsyer/dev/scratch/demo/target/demo started by dsyer in /home/dsyer/dev/scratch/demo)
+2022-12-08T05:36:54.366-08:00 INFO 554359 --- [ main] com.example.demo.DemoApplication : No active profile set, falling back to 1 default profile: "default"
+2022-12-08T05:36:54.377-08:00 INFO 554359 --- [ main] g.s.a.GrpcServerFactoryAutoConfiguration : Detected grpc-netty: Creating NettyGrpcServerFactory
+2022-12-08T05:36:54.392-08:00 INFO 554359 --- [ main] n.d.b.g.s.s.AbstractGrpcServerFactory : Registered gRPC service: Simple, bean: grpcServerService, class: com.example.demo.GrpcServerService
+2022-12-08T05:36:54.392-08:00 INFO 554359 --- [ main] n.d.b.g.s.s.AbstractGrpcServerFactory : Registered gRPC service: grpc.health.v1.Health, bean: grpcHealthService, class: io.grpc.protobuf.services.HealthServiceImpl
+2022-12-08T05:36:54.392-08:00 INFO 554359 --- [ main] n.d.b.g.s.s.AbstractGrpcServerFactory : Registered gRPC service: grpc.reflection.v1alpha.ServerReflection, bean: protoReflectionService, class: io.grpc.protobuf.services.ProtoReflectionService
+2022-12-08T05:36:54.396-08:00 INFO 554359 --- [ main] n.d.b.g.s.s.GrpcServerLifecycle : gRPC Server started, listening on address: *, port: 9090
+2022-12-08T05:36:54.396-08:00 INFO 554359 --- [ main] com.example.demo.DemoApplication : Started DemoApplication in 0.046 seconds (process running for 0.052)
+```
diff --git a/samples/grpc-secure/build.gradle b/samples/grpc-secure/build.gradle
new file mode 100644
index 0000000..6b748a5
--- /dev/null
+++ b/samples/grpc-secure/build.gradle
@@ -0,0 +1,60 @@
+plugins {
+ id 'java'
+ id 'org.springframework.boot' version '3.4.0'
+ id 'io.spring.dependency-management' version '1.1.6'
+ id 'org.graalvm.buildtools.native' version '0.10.3'
+ id 'com.google.protobuf' version '0.9.4'
+}
+
+group = 'com.example'
+version = '0.3.0-SNAPSHOT'
+
+java {
+ toolchain {
+ languageVersion = JavaLanguageVersion.of(17)
+ }
+}
+
+repositories {
+ mavenLocal()
+ mavenCentral()
+ maven { url 'https://repo.spring.io/milestone' }
+ maven { url 'https://repo.spring.io/snapshot' }
+}
+
+dependencyManagement {
+ imports {
+ mavenBom 'org.springframework.grpc:spring-grpc-dependencies:0.3.0-SNAPSHOT'
+ }
+}
+
+dependencies {
+ implementation 'org.springframework.grpc:spring-grpc-spring-boot-starter'
+ implementation 'org.springframework.boot:spring-boot-starter-security'
+ implementation 'io.grpc:grpc-services'
+ testImplementation 'org.springframework.boot:spring-boot-starter-test'
+ testImplementation 'org.springframework.grpc:spring-grpc-test'
+ testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+}
+
+tasks.named('test') {
+ useJUnitPlatform()
+}
+
+protobuf {
+ protoc {
+ artifact = "com.google.protobuf:protoc:${dependencyManagement.importedProperties['protobuf-java.version']}"
+ }
+ plugins {
+ grpc {
+ artifact = "io.grpc:protoc-gen-grpc-java:${dependencyManagement.importedProperties['grpc.version']}"
+ }
+ }
+ generateProtoTasks {
+ all()*.plugins {
+ grpc {
+ option 'jakarta_omit'
+ }
+ }
+ }
+}
diff --git a/samples/grpc-secure/gradle/wrapper/gradle-wrapper.jar b/samples/grpc-secure/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..a4b76b9
Binary files /dev/null and b/samples/grpc-secure/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/samples/grpc-secure/gradle/wrapper/gradle-wrapper.properties b/samples/grpc-secure/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..df97d72
--- /dev/null
+++ b/samples/grpc-secure/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.10.2-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/samples/grpc-secure/gradlew b/samples/grpc-secure/gradlew
new file mode 100755
index 0000000..f5feea6
--- /dev/null
+++ b/samples/grpc-secure/gradlew
@@ -0,0 +1,252 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed 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
+#
+# https://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.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+# Gradle start up script for POSIX generated by Gradle.
+#
+# Important for running:
+#
+# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+# noncompliant, but you have some other compliant shell such as ksh or
+# bash, then to run this script, type that shell name before the whole
+# command line, like:
+#
+# ksh Gradle
+#
+# Busybox and similar reduced shells will NOT work, because this script
+# requires all of these POSIX shell features:
+# * functions;
+# * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+# «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+# * compound commands having a testable exit status, especially «case»;
+# * various built-in commands including «command», «set», and «ulimit».
+#
+# Important for patching:
+#
+# (2) This script targets any POSIX shell, so it avoids extensions provided
+# by Bash, Ksh, etc; in particular arrays are avoided.
+#
+# The "traditional" practice of packing multiple parameters into a
+# space-separated string is a well documented source of bugs and security
+# problems, so this is (mostly) avoided, by progressively accumulating
+# options in "$@", and eventually passing that to Java.
+#
+# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+# see the in-line comments for details.
+#
+# There are tweaks for specific operating systems such as AIX, CygWin,
+# Darwin, MinGW, and NonStop.
+#
+# (3) This script is generated from the Groovy template
+# https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+# within the Gradle project.
+#
+# You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+ APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path
+ [ -h "$app_path" ]
+do
+ ls=$( ls -ld "$app_path" )
+ link=${ls#*' -> '}
+ case $link in #(
+ /*) app_path=$link ;; #(
+ *) app_path=$APP_HOME$link ;;
+ esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s
+' "$PWD" ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+ echo "$*"
+} >&2
+
+die () {
+ echo
+ echo "$*"
+ echo
+ exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in #(
+ CYGWIN* ) cygwin=true ;; #(
+ Darwin* ) darwin=true ;; #(
+ MSYS* | MINGW* ) msys=true ;; #(
+ NONSTOP* ) nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+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=$JAVA_HOME/jre/sh/java
+ else
+ JAVACMD=$JAVA_HOME/bin/java
+ fi
+ if [ ! -x "$JAVACMD" ] ; then
+ die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+ fi
+else
+ JAVACMD=java
+ if ! command -v java >/dev/null 2>&1
+ then
+ die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+ fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+ case $MAX_FD in #(
+ max*)
+ # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+ # shellcheck disable=SC2039,SC3045
+ MAX_FD=$( ulimit -H -n ) ||
+ warn "Could not query maximum file descriptor limit"
+ esac
+ case $MAX_FD in #(
+ '' | soft) :;; #(
+ *)
+ # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+ # shellcheck disable=SC2039,SC3045
+ ulimit -n "$MAX_FD" ||
+ warn "Could not set maximum file descriptor limit to $MAX_FD"
+ esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+# * args from the command line
+# * the main class name
+# * -classpath
+# * -D...appname settings
+# * --module-path (only if needed)
+# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+ APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+ CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+ JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+ # Now convert the arguments - kludge to limit ourselves to /bin/sh
+ for arg do
+ if
+ case $arg in #(
+ -*) false ;; # don't mess with options #(
+ /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath
+ [ -e "$t" ] ;; #(
+ *) false ;;
+ esac
+ then
+ arg=$( cygpath --path --ignore --mixed "$arg" )
+ fi
+ # Roll the args list around exactly as many times as the number of
+ # args, so each arg winds up back in the position where it started, but
+ # possibly modified.
+ #
+ # NB: a `for` loop captures its iteration list before it begins, so
+ # changing the positional parameters here affects neither the number of
+ # iterations, nor the values presented in `arg`.
+ shift # remove old arg
+ set -- "$@" "$arg" # push replacement arg
+ done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+# * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+# and any embedded shellness will be escaped.
+# * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+# treated as '${Hostname}' itself on the command line.
+
+set -- \
+ "-Dorg.gradle.appname=$APP_BASE_NAME" \
+ -classpath "$CLASSPATH" \
+ org.gradle.wrapper.GradleWrapperMain \
+ "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+ die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+# readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+# set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+ printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+ xargs -n1 |
+ sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+ tr '\n' ' '
+ )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/samples/grpc-secure/gradlew.bat b/samples/grpc-secure/gradlew.bat
new file mode 100644
index 0000000..9b42019
--- /dev/null
+++ b/samples/grpc-secure/gradlew.bat
@@ -0,0 +1,94 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/samples/grpc-secure/pom.xml b/samples/grpc-secure/pom.xml
new file mode 100644
index 0000000..692053d
--- /dev/null
+++ b/samples/grpc-secure/pom.xml
@@ -0,0 +1,182 @@
+
+
+ 4.0.0
+
+ org.springframework.boot
+ spring-boot-starter-parent
+ 3.4.0
+
+
+ org.springframework.grpc
+ grpc-secure-sample
+ 0.3.0-SNAPSHOT
+ Spring gRPC Server Sample
+ Demo project for Spring gRPC
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ 17
+ 0.0.39
+ 3.25.5
+ 1.63.2
+
+
+
+
+ org.springframework.grpc
+ spring-grpc-dependencies
+ 0.3.0-SNAPSHOT
+ pom
+ import
+
+
+
+
+
+ org.springframework.grpc
+ spring-grpc-spring-boot-starter
+
+
+ org.springframework.boot
+ spring-boot-starter-security
+
+
+ io.grpc
+ grpc-services
+
+
+ io.projectreactor.netty
+ reactor-netty-core
+
+
+
+ org.springframework.grpc
+ spring-grpc-test
+ test
+
+
+
+
+
+
+ kr.motd.maven
+ os-maven-plugin
+ 1.7.1
+
+
+
+
+ org.graalvm.buildtools
+ native-maven-plugin
+
+
+ --verbose
+
+
+
+
+ org.springframework.boot
+ spring-boot-maven-plugin
+
+
+ org.apache.maven.plugins
+ maven-deploy-plugin
+
+ true
+
+
+
+ io.spring.javaformat
+ spring-javaformat-maven-plugin
+ ${spring-javaformat-maven-plugin.version}
+
+
+
+ validate
+ true
+
+ validate
+
+
+
+
+
+ org.xolstice.maven.plugins
+ protobuf-maven-plugin
+ 0.6.1
+
+
+ com.google.protobuf:protoc:${protobuf-java.version}:exe:${os.detected.classifier}
+ grpc-java
+
+ io.grpc:protoc-gen-grpc-java:${grpc.version}:exe:${os.detected.classifier}
+
+
+
+
+
+ jakarta_omit,@generated=omit
+
+
+
+ compile
+ compile-custom
+
+
+
+
+
+
+
+
+
+ spring-milestones
+ Spring Milestones
+ https://repo.spring.io/milestone
+
+ false
+
+
+
+ spring-snapshots
+ Spring Snapshots
+ https://repo.spring.io/snapshot
+
+ false
+
+
+
+
+
+ spring-milestones
+ Spring Milestones
+ https://repo.spring.io/milestone
+
+ false
+
+
+
+ spring-snapshots
+ Spring Snapshots
+ https://repo.spring.io/snapshot
+
+ false
+
+
+
+
+
+
diff --git a/samples/grpc-secure/settings.gradle b/samples/grpc-secure/settings.gradle
new file mode 100644
index 0000000..d294bd1
--- /dev/null
+++ b/samples/grpc-secure/settings.gradle
@@ -0,0 +1,8 @@
+pluginManagement {
+ repositories {
+ maven { url 'https://repo.spring.io/milestone' }
+ maven { url 'https://repo.spring.io/snapshot' }
+ gradlePluginPortal()
+ }
+}
+rootProject.name = 'demo'
diff --git a/samples/grpc-secure/src/main/java/org/springframework/grpc/sample/GrpcServerApplication.java b/samples/grpc-secure/src/main/java/org/springframework/grpc/sample/GrpcServerApplication.java
new file mode 100644
index 0000000..e11b211
--- /dev/null
+++ b/samples/grpc-secure/src/main/java/org/springframework/grpc/sample/GrpcServerApplication.java
@@ -0,0 +1,61 @@
+package org.springframework.grpc.sample;
+
+import static org.springframework.security.config.Customizer.withDefaults;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Import;
+import org.springframework.grpc.server.GlobalServerInterceptor;
+import org.springframework.grpc.server.security.GrpcSecurity;
+import org.springframework.security.config.annotation.authentication.configuration.AuthenticationConfiguration;
+import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
+import org.springframework.security.core.authority.AuthorityUtils;
+import org.springframework.security.core.userdetails.User;
+import org.springframework.security.provisioning.InMemoryUserDetailsManager;
+import org.springframework.security.web.authentication.preauth.PreAuthenticatedAuthenticationToken;
+
+import io.grpc.Metadata;
+import io.grpc.ServerInterceptor;
+
+@SpringBootApplication
+@EnableMethodSecurity
+@Import(AuthenticationConfiguration.class)
+public class GrpcServerApplication {
+
+ public static final Metadata.Key USER_KEY = Metadata.Key.of("X-USER", Metadata.ASCII_STRING_MARSHALLER);
+
+ public static void main(String[] args) {
+ SpringApplication.run(GrpcServerApplication.class, args);
+ }
+
+ @Bean
+ public InMemoryUserDetailsManager inMemoryUserDetailsManager() {
+ return new InMemoryUserDetailsManager(
+ User.withUsername("user").password("{noop}user").authorities("ROLE_USER").build(),
+ User.withUsername("admin").password("{noop}admin").authorities("ROLE_ADMIN").build());
+ }
+
+ @Bean
+ @GlobalServerInterceptor
+ public ServerInterceptor securityInterceptor(GrpcSecurity security) throws Exception {
+ return security
+ .authorizeRequests(requests -> requests
+ .methods("Simple/StreamHello").hasAuthority("ROLE_ADMIN")
+ .methods("Simple/SayHello").hasAuthority("ROLE_USER")
+ .allRequests().permitAll())
+ .httpBasic(withDefaults())
+ .preauth(withDefaults())
+ .authenticationExtractor((headers, attributes) -> {
+ String user = headers.get(USER_KEY);
+ if (user != null) {
+ return new PreAuthenticatedAuthenticationToken(user, "N/A",
+ AuthorityUtils.createAuthorityList("ROLE_" + user.toUpperCase()));
+ }
+ return null;
+ })
+ .build();
+
+ }
+
+}
diff --git a/samples/grpc-secure/src/main/java/org/springframework/grpc/sample/GrpcServerService.java b/samples/grpc-secure/src/main/java/org/springframework/grpc/sample/GrpcServerService.java
new file mode 100644
index 0000000..3f8eb8f
--- /dev/null
+++ b/samples/grpc-secure/src/main/java/org/springframework/grpc/sample/GrpcServerService.java
@@ -0,0 +1,50 @@
+package org.springframework.grpc.sample;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.springframework.grpc.sample.proto.HelloReply;
+import org.springframework.grpc.sample.proto.HelloRequest;
+import org.springframework.grpc.sample.proto.SimpleGrpc;
+import org.springframework.stereotype.Service;
+
+import io.grpc.stub.StreamObserver;
+
+@Service
+public class GrpcServerService extends SimpleGrpc.SimpleImplBase {
+
+ private static Log log = LogFactory.getLog(GrpcServerService.class);
+
+ @Override
+ // @PreAuthorize("hasAuthority('ROLE_USER')")
+ public void sayHello(HelloRequest req, StreamObserver responseObserver) {
+ log.info("Hello " + req.getName());
+ if (req.getName().startsWith("error")) {
+ throw new IllegalArgumentException("Bad name: " + req.getName());
+ }
+ HelloReply reply = HelloReply.newBuilder().setMessage("Hello ==> " + req.getName()).build();
+ responseObserver.onNext(reply);
+ responseObserver.onCompleted();
+ }
+
+ @Override
+ // @PreAuthorize("hasAuthority('ROLE_ADMIN')")
+ public void streamHello(HelloRequest req, StreamObserver responseObserver) {
+ log.info("Hello " + req.getName());
+ int count = 0;
+ while (count < 10) {
+ HelloReply reply = HelloReply.newBuilder().setMessage("Hello(" + count + ") ==> " + req.getName()).build();
+ responseObserver.onNext(reply);
+ count++;
+ try {
+ Thread.sleep(1000L);
+ }
+ catch (InterruptedException e) {
+ Thread.currentThread().interrupt();
+ responseObserver.onError(e);
+ return;
+ }
+ }
+ responseObserver.onCompleted();
+ }
+
+}
\ No newline at end of file
diff --git a/samples/grpc-secure/src/main/proto/hello.proto b/samples/grpc-secure/src/main/proto/hello.proto
new file mode 100644
index 0000000..731679c
--- /dev/null
+++ b/samples/grpc-secure/src/main/proto/hello.proto
@@ -0,0 +1,23 @@
+syntax = "proto3";
+
+option java_multiple_files = true;
+option java_package = "org.springframework.grpc.sample.proto";
+option java_outer_classname = "HelloWorldProto";
+
+// The greeting service definition.
+service Simple {
+ // Sends a greeting
+ rpc SayHello (HelloRequest) returns (HelloReply) {
+ }
+ rpc StreamHello(HelloRequest) returns (stream HelloReply) {}
+}
+
+// The request message containing the user's name.
+message HelloRequest {
+ string name = 1;
+}
+
+// The response message containing the greetings
+message HelloReply {
+ string message = 1;
+}
\ No newline at end of file
diff --git a/samples/grpc-secure/src/main/resources/META-INF/native-image/org.springframework.samples/grpc-server-sample/native-image.properties b/samples/grpc-secure/src/main/resources/META-INF/native-image/org.springframework.samples/grpc-server-sample/native-image.properties
new file mode 100644
index 0000000..5c43451
--- /dev/null
+++ b/samples/grpc-secure/src/main/resources/META-INF/native-image/org.springframework.samples/grpc-server-sample/native-image.properties
@@ -0,0 +1,2 @@
+# Ignored unless building in Nix (https://github.com/oracle/graal/issues/8639)
+Args = -ENIX_LDFLAGS -ENIX_CC_WRAPPER_TARGET_HOST_x86_64_unknown_linux_gnu
diff --git a/samples/grpc-secure/src/main/resources/application.properties b/samples/grpc-secure/src/main/resources/application.properties
new file mode 100644
index 0000000..5cf9afd
--- /dev/null
+++ b/samples/grpc-secure/src/main/resources/application.properties
@@ -0,0 +1,2 @@
+spring.application.name=grpc-server
+logging.level.org.springframework.security=debug
diff --git a/samples/grpc-secure/src/test/java/org/springframework/grpc/sample/GrpcServerApplicationTests.java b/samples/grpc-secure/src/test/java/org/springframework/grpc/sample/GrpcServerApplicationTests.java
new file mode 100644
index 0000000..3349ee1
--- /dev/null
+++ b/samples/grpc-secure/src/test/java/org/springframework/grpc/sample/GrpcServerApplicationTests.java
@@ -0,0 +1,129 @@
+package org.springframework.grpc.sample;
+
+import static org.junit.Assert.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.List;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.boot.builder.SpringApplicationBuilder;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.TestConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Lazy;
+import org.springframework.grpc.client.ChannelBuilderOptions;
+import org.springframework.grpc.client.GrpcChannelFactory;
+import org.springframework.grpc.client.security.BasicAuthenticationInterceptor;
+import org.springframework.grpc.sample.proto.HelloReply;
+import org.springframework.grpc.sample.proto.HelloRequest;
+import org.springframework.grpc.sample.proto.SimpleGrpc;
+import org.springframework.grpc.test.LocalGrpcPort;
+import org.springframework.test.annotation.DirtiesContext;
+
+import io.grpc.CallOptions;
+import io.grpc.Channel;
+import io.grpc.ClientCall;
+import io.grpc.ClientInterceptor;
+import io.grpc.ForwardingClientCall.SimpleForwardingClientCall;
+import io.grpc.MethodDescriptor;
+import io.grpc.Status.Code;
+import io.grpc.StatusRuntimeException;
+
+@SpringBootTest(properties = { "spring.grpc.server.port=0",
+ "spring.grpc.client.channels.stub.address=static://0.0.0.0:${local.grpc.port}",
+ "spring.grpc.client.channels.basic.address=static://0.0.0.0:${local.grpc.port}",
+ "spring.grpc.client.channels.secure.address=static://0.0.0.0:${local.grpc.port}" })
+public class GrpcServerApplicationTests {
+
+ public static void main(String[] args) {
+ new SpringApplicationBuilder(GrpcServerApplication.class, ExtraConfiguration.class)
+ .run(args);
+ }
+
+ @Autowired
+ @Qualifier("stub")
+ private SimpleGrpc.SimpleBlockingStub stub;
+
+ @Autowired
+ @Qualifier("secure")
+ private SimpleGrpc.SimpleBlockingStub secure;
+
+ @Autowired
+ @Qualifier("basic")
+ private SimpleGrpc.SimpleBlockingStub basic;
+
+ @Test
+ @DirtiesContext
+ void contextLoads() {
+ }
+
+ @Test
+ @DirtiesContext
+ void unauthenticated() {
+ StatusRuntimeException exception = assertThrows(StatusRuntimeException.class,
+ () -> stub.sayHello(HelloRequest.newBuilder().setName("Alien").build()));
+ assertEquals(Code.UNAUTHENTICATED, exception.getStatus().getCode());
+ }
+
+ @Test
+ @DirtiesContext
+ void unauthauthorized() {
+ StatusRuntimeException exception = assertThrows(StatusRuntimeException.class,
+ () -> secure.streamHello(HelloRequest.newBuilder().setName("Alien").build()).next());
+ assertEquals(Code.PERMISSION_DENIED, exception.getStatus().getCode());
+ }
+
+ @Test
+ @DirtiesContext
+ void authenticated() {
+ HelloReply response = secure.sayHello(HelloRequest.newBuilder().setName("Alien").build());
+ assertEquals("Hello ==> Alien", response.getMessage());
+ }
+
+ @Test
+ @DirtiesContext
+ void basic() {
+ HelloReply response = basic.sayHello(HelloRequest.newBuilder().setName("Alien").build());
+ assertEquals("Hello ==> Alien", response.getMessage());
+ }
+
+ @TestConfiguration
+ static class ExtraConfiguration {
+
+ @Bean
+ @Lazy
+ SimpleGrpc.SimpleBlockingStub secure(GrpcChannelFactory channels) {
+ return SimpleGrpc.newBlockingStub(channels.createChannel("secure",
+ ChannelBuilderOptions.defaults().withInterceptors(List.of(new ClientInterceptor() {
+ @Override
+ public ClientCall interceptCall(MethodDescriptor method,
+ CallOptions callOptions, Channel next) {
+ return new SimpleForwardingClientCall(next.newCall(method, callOptions)) {
+ public void start(ClientCall.Listener responseListener,
+ io.grpc.Metadata headers) {
+ headers.put(GrpcServerApplication.USER_KEY, "user");
+ super.start(responseListener, headers);
+ };
+ };
+ }
+ }))));
+ }
+
+ @Bean
+ @Lazy
+ SimpleGrpc.SimpleBlockingStub basic(GrpcChannelFactory channels) {
+ return SimpleGrpc.newBlockingStub(channels.createChannel("basic", ChannelBuilderOptions.defaults()
+ .withInterceptors(List.of(new BasicAuthenticationInterceptor("user", "user")))));
+ }
+
+ @Bean
+ @Lazy
+ SimpleGrpc.SimpleBlockingStub stub(GrpcChannelFactory channels, @LocalGrpcPort int port) {
+ return SimpleGrpc.newBlockingStub(channels.createChannel("stub"));
+ }
+
+ }
+
+}
diff --git a/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/AuthenticationServerInterceptor.java b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/AuthenticationServerInterceptor.java
new file mode 100644
index 0000000..091d94d
--- /dev/null
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/AuthenticationServerInterceptor.java
@@ -0,0 +1,118 @@
+/*
+ * Copyright 2024-2024 the original author or authors.
+ *
+ * Licensed 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
+ *
+ * https://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.
+ */
+package org.springframework.grpc.server.security;
+
+import org.springframework.core.Ordered;
+import org.springframework.security.access.AccessDeniedException;
+import org.springframework.security.authentication.AnonymousAuthenticationToken;
+import org.springframework.security.authentication.AuthenticationManager;
+import org.springframework.security.authorization.AuthorizationManager;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.authority.AuthorityUtils;
+import org.springframework.security.core.context.SecurityContext;
+import org.springframework.security.core.context.SecurityContextHolder;
+
+import io.grpc.ForwardingServerCallListener;
+import io.grpc.Metadata;
+import io.grpc.ServerCall;
+import io.grpc.ServerCall.Listener;
+import io.grpc.ServerCallHandler;
+import io.grpc.ServerInterceptor;
+
+/**
+ * An interceptor that extracts the authentication credentials from the gRPC
+ * request
+ * headers and metadata, authenticates the user, and sets the authentication in
+ * the
+ * SecurityContext. This interceptor should be registered with the gRPC server
+ * to handle
+ * authentication.
+ *
+ * @author Dave Syer
+ */
+public class AuthenticationServerInterceptor implements ServerInterceptor, Ordered {
+
+ private final AuthenticationManager authenticationManager;
+
+ private final GrpcAuthenticationExtractor extractor;
+
+ private final AuthorizationManager authorizationManager;
+
+ @Override
+ public int getOrder() {
+ return GrpcSecurity.CONTEXT_FILTER_ORDER - 10;
+ }
+
+ public AuthenticationServerInterceptor(AuthenticationManager authenticationManager,
+ GrpcAuthenticationExtractor extractor, AuthorizationManager authorizationManager) {
+ this.authenticationManager = authenticationManager;
+ this.extractor = extractor;
+ this.authorizationManager = authorizationManager;
+ }
+
+ @Override
+ public Listener interceptCall(ServerCall call, Metadata headers,
+ ServerCallHandler next) {
+ SecurityContext securityContext = SecurityContextHolder.getContext();
+ Authentication user = this.extractor.extract(headers, call.getAttributes());
+ Authentication authenticated;
+ if (user != null) {
+ authenticated = this.authenticationManager.authenticate(user);
+ } else {
+ authenticated = new AnonymousAuthenticationToken("anonymous", "anonymous",
+ AuthorityUtils.createAuthorityList("ROLE_ANONYMOUS"));
+ }
+ securityContext.setAuthentication(authenticated);
+ CallContext context = new CallContext(headers, call.getAttributes(), call.getMethodDescriptor());
+ if (this.authorizationManager != null && authenticated != null) {
+ return new AuthenticationListener(next.startCall(call, headers), this.authorizationManager, context,
+ authenticated);
+ }
+ return next.startCall(call, headers);
+ }
+
+ static class AuthenticationListener extends ForwardingServerCallListener {
+
+ private final Listener delegate;
+ private final AuthorizationManager authorizationManager;
+ private final CallContext context;
+ private final Authentication authentication;
+
+ AuthenticationListener(io.grpc.ServerCall.Listener delegate,
+ AuthorizationManager authorizationManager, CallContext context,
+ Authentication authenticated) {
+ this.delegate = delegate;
+ this.authorizationManager = authorizationManager;
+ this.context = context;
+ this.authentication = authenticated;
+ }
+
+ @Override
+ public void onReady() {
+ if (!this.authorizationManager.authorize(() -> authentication, this.context).isGranted()) {
+ throw new AccessDeniedException("not allowed");
+ }
+ super.onReady();
+ }
+
+ @Override
+ protected Listener delegate() {
+ return this.delegate;
+ }
+
+ }
+
+}
diff --git a/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/CallContext.java b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/CallContext.java
new file mode 100644
index 0000000..2a85dbe
--- /dev/null
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/CallContext.java
@@ -0,0 +1,8 @@
+package org.springframework.grpc.server.security;
+
+import io.grpc.Attributes;
+import io.grpc.Metadata;
+import io.grpc.MethodDescriptor;
+
+public record CallContext(Metadata headers, Attributes attributes, MethodDescriptor method) {
+}
\ No newline at end of file
diff --git a/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/CallMatcher.java b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/CallMatcher.java
new file mode 100644
index 0000000..368b3e5
--- /dev/null
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/CallMatcher.java
@@ -0,0 +1,24 @@
+/*
+ * Copyright 2024-2024 the original author or authors.
+ *
+ * Licensed 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
+ *
+ * https://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.
+ */
+package org.springframework.grpc.server.security;
+
+public interface CallMatcher {
+
+ CallMatcher ALL = (context) -> true;
+
+ boolean matches(CallContext context);
+
+}
diff --git a/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/GrpcAuthenticationExtractor.java b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/GrpcAuthenticationExtractor.java
new file mode 100644
index 0000000..71a7d98
--- /dev/null
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/GrpcAuthenticationExtractor.java
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2024-2024 the original author or authors.
+ *
+ * Licensed 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
+ *
+ * https://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.
+ */
+package org.springframework.grpc.server.security;
+
+import org.springframework.security.core.Authentication;
+
+import io.grpc.Attributes;
+import io.grpc.Metadata;
+
+public interface GrpcAuthenticationExtractor {
+
+ Authentication extract(Metadata headers, Attributes attributes);
+
+}
diff --git a/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/HttpBasicAuthenticationExtractor.java b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/HttpBasicAuthenticationExtractor.java
new file mode 100644
index 0000000..0fbbf5d
--- /dev/null
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/HttpBasicAuthenticationExtractor.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2024-2024 the original author or authors.
+ *
+ * Licensed 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
+ *
+ * https://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.
+ */
+package org.springframework.grpc.server.security;
+
+import java.nio.charset.StandardCharsets;
+import java.util.Base64;
+import java.util.Locale;
+
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.Authentication;
+
+import io.grpc.Attributes;
+import io.grpc.Metadata;
+
+/**
+ * Extracts the HTTP Basic authentication credentials from the gRPC request headers. If
+ * the 'Authorization' header is present and starts with 'Basic ', the username and
+ * password are extracted from the Base64-encoded header value and returned as a
+ * {@link UsernamePasswordAuthenticationToken}. If the header is not present or does not
+ * start with 'Basic ', this method returns null.
+ *
+ * @author Dave Syer
+ */
+public class HttpBasicAuthenticationExtractor implements GrpcAuthenticationExtractor {
+
+ @Override
+ public Authentication extract(Metadata headers, Attributes attributes) {
+ String auth = headers.get(GrpcSecurity.AUTHORIZATION_KEY);
+ if (auth == null) {
+ return null;
+ }
+ if (!auth.toLowerCase(Locale.ROOT).startsWith("basic ")) {
+ return null;
+ }
+ auth = auth.substring("basic ".length());
+ return extract(auth);
+ }
+
+ private Authentication extract(String auth) {
+ String[] parts = new String(Base64.getDecoder().decode(auth), StandardCharsets.UTF_8).split(":");
+ if (parts.length != 2) {
+ return null;
+ }
+ return new UsernamePasswordAuthenticationToken(parts[0], parts[1]);
+ }
+
+}
diff --git a/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/HttpBasicConfigurer.java b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/HttpBasicConfigurer.java
new file mode 100644
index 0000000..15c9189
--- /dev/null
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/HttpBasicConfigurer.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2024-2024 the original author or authors.
+ *
+ * Licensed 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
+ *
+ * https://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.
+ */
+package org.springframework.grpc.server.security;
+
+import org.springframework.context.ApplicationContext;
+import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
+import org.springframework.security.config.annotation.SecurityBuilder;
+import org.springframework.security.config.annotation.SecurityConfigurerAdapter;
+import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
+import org.springframework.security.core.userdetails.UserDetailsService;
+
+public final class HttpBasicConfigurer>
+ extends SecurityConfigurerAdapter {
+
+ private final ApplicationContext context;
+
+ private final AuthenticationManagerBuilder authenticationManagerBuilder;
+
+ private UserDetailsService userDetailsService;
+
+ public HttpBasicConfigurer(AuthenticationManagerBuilder authenticationManagerBuilder, ApplicationContext context) {
+ this.authenticationManagerBuilder = authenticationManagerBuilder;
+ this.context = context;
+ }
+
+ public HttpBasicConfigurer userDetailsService(UserDetailsService userDetailsService) {
+ this.userDetailsService = userDetailsService;
+ return this;
+ }
+
+ @Override
+ public void configure(H builder) throws Exception {
+ DaoAuthenticationProvider provider = new DaoAuthenticationProvider();
+ UserDetailsService userDetailsService = this.userDetailsService;
+ if (userDetailsService == null) {
+ userDetailsService = this.authenticationManagerBuilder.getDefaultUserDetailsService();
+ }
+ if (userDetailsService == null) {
+ userDetailsService = this.context.getBean(UserDetailsService.class);
+ }
+ provider.setUserDetailsService(userDetailsService);
+ this.authenticationManagerBuilder.authenticationProvider(provider);
+ }
+
+}
diff --git a/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/PreAuthConfigurer.java b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/PreAuthConfigurer.java
new file mode 100644
index 0000000..208b86b
--- /dev/null
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/PreAuthConfigurer.java
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2024-2024 the original author or authors.
+ *
+ * Licensed 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
+ *
+ * https://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.
+ */
+package org.springframework.grpc.server.security;
+
+import org.springframework.context.ApplicationContext;
+import org.springframework.security.config.annotation.SecurityBuilder;
+import org.springframework.security.config.annotation.SecurityConfigurerAdapter;
+import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
+import org.springframework.security.core.userdetails.UserDetailsByNameServiceWrapper;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.web.authentication.preauth.PreAuthenticatedAuthenticationProvider;
+import org.springframework.security.web.authentication.preauth.PreAuthenticatedAuthenticationToken;
+
+public final class PreAuthConfigurer>
+ extends SecurityConfigurerAdapter {
+
+ private final ApplicationContext context;
+
+ private final AuthenticationManagerBuilder authenticationManagerBuilder;
+
+ private UserDetailsService userDetailsService;
+
+ public PreAuthConfigurer(AuthenticationManagerBuilder authenticationManagerBuilder, ApplicationContext context) {
+ this.authenticationManagerBuilder = authenticationManagerBuilder;
+ this.context = context;
+ }
+
+ public PreAuthConfigurer userDetailsService(UserDetailsService userDetailsService) {
+ this.userDetailsService = userDetailsService;
+ return this;
+ }
+
+ @Override
+ public void configure(H builder) throws Exception {
+ PreAuthenticatedAuthenticationProvider provider = new PreAuthenticatedAuthenticationProvider();
+ UserDetailsService userDetailsService = this.userDetailsService;
+ if (userDetailsService == null) {
+ userDetailsService = this.authenticationManagerBuilder.getDefaultUserDetailsService();
+ }
+ if (userDetailsService == null) {
+ userDetailsService = this.context.getBean(UserDetailsService.class);
+ }
+ UserDetailsByNameServiceWrapper details = new UserDetailsByNameServiceWrapper<>(
+ userDetailsService);
+ provider.setPreAuthenticatedUserDetailsService(details);
+ this.authenticationManagerBuilder.authenticationProvider(provider);
+ }
+
+}
diff --git a/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/RequestMapperConfigurer.java b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/RequestMapperConfigurer.java
new file mode 100644
index 0000000..8069513
--- /dev/null
+++ b/spring-grpc-core/src/main/java/org/springframework/grpc/server/security/RequestMapperConfigurer.java
@@ -0,0 +1,152 @@
+/*
+ * Copyright 2024-2024 the original author or authors.
+ *
+ * Licensed 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
+ *
+ * https://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.
+ */
+package org.springframework.grpc.server.security;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.Supplier;
+
+import org.springframework.context.ApplicationContext;
+import org.springframework.security.access.hierarchicalroles.NullRoleHierarchy;
+import org.springframework.security.access.hierarchicalroles.RoleHierarchy;
+import org.springframework.security.authorization.AuthorityAuthorizationManager;
+import org.springframework.security.authorization.AuthorizationDecision;
+import org.springframework.security.authorization.AuthorizationManager;
+import org.springframework.security.authorization.AuthorizationManagers;
+import org.springframework.security.config.annotation.SecurityConfigurerAdapter;
+import org.springframework.security.core.Authentication;
+import org.springframework.util.Assert;
+import org.springframework.util.PatternMatchUtils;
+import org.springframework.util.function.SingletonSupplier;
+
+public class RequestMapperConfigurer
+ extends SecurityConfigurerAdapter {
+
+ private List authorizedCalls = new ArrayList<>();
+
+ private final Supplier roleHierarchy;
+
+ public RequestMapperConfigurer(ApplicationContext context) {
+ this.roleHierarchy = SingletonSupplier.of(() -> (context.getBeanNamesForType(RoleHierarchy.class).length > 0)
+ ? context.getBean(RoleHierarchy.class)
+ : new NullRoleHierarchy());
+ }
+
+ @Override
+ public void configure(GrpcSecurity builder) throws Exception {
+ builder.authorizationManager(new RequestMapperAuthorizationManager(this.authorizedCalls));
+ }
+
+ public AuthorizedCall allRequests() {
+ AuthorizedCall call = new AuthorizedCall(CallMatcher.ALL);
+ this.authorizedCalls.add(call);
+ return call;
+ }
+
+ public AuthorizedCall methods(String... patterns) {
+ AuthorizedCall call = new AuthorizedCall(new MethodCallMatcher(patterns));
+ this.authorizedCalls.add(call);
+ return call;
+ }
+
+ private static class MethodCallMatcher implements CallMatcher {
+
+ private String[] patterns;
+
+ public MethodCallMatcher(String... patterns) {
+ this.patterns = patterns;
+ }
+
+ @Override
+ public boolean matches(CallContext context) {
+ return PatternMatchUtils.simpleMatch(patterns, context.method().getFullMethodName());
+ }
+ }
+
+ public class AuthorizedCall {
+
+ static final AuthorizationManager