add ability to read RpcServer port bound when port auto selected by OS (#280)

Co-authored-by: Vitaly Khalmansky <[email protected]>

Author: graebm

README.md

@@ -80,7 +80,7 @@ mkdir sdk-workspace
 cd sdk-workspace
 # Clone the CRT repository
 #     (Use the latest version of the CRT here instead of "v0.16.4")
-git clone --branch v0.16.4 --recurse-submodules https://github.com/awslabs/aws-crt-java.git
+git clone --branch v0.16.12 --recurse-submodules https://github.com/awslabs/aws-crt-java.git
 cd aws-crt-java
 # Compile and install the CRT
 mvn install -Dmaven.test.skip=true
@@ -102,7 +102,7 @@ mkdir sdk-workspace
 cd sdk-workspace
 # Clone the CRT repository
 #     (Use the latest version of the CRT here instead of "v0.16.4")
-git clone --branch v0.16.4 --recurse-submodules https://github.com/awslabs/aws-crt-java.git
+git clone --branch v0.16.12 --recurse-submodules https://github.com/awslabs/aws-crt-java.git
 # Compile and install the CRT for Android
 cd aws-crt-java/android
 ./gradlew connectedCheck # optional, will run the unit tests on any connected devices/emulators
@@ -126,7 +126,7 @@ repositories {
 }
 
 dependencies {
-    implementation 'software.amazon.awssdk.crt:android:0.16.4'
+    implementation 'software.amazon.awssdk.crt:android:0.16.12'
 }
 ```
 

android/iotdevicesdk/build.gradle

@@ -91,7 +91,7 @@ repositories {
 }
 
 dependencies {
-    api 'software.amazon.awssdk.crt:aws-crt-android:0.16.4'
+    api 'software.amazon.awssdk.crt:aws-crt-android:0.16.12'
     implementation 'org.slf4j:slf4j-api:1.7.30'
     implementation 'com.google.code.gson:gson:2.9.0'
     implementation 'androidx.appcompat:appcompat:1.1.0'

sdk/greengrass/event-stream-rpc-server/src/main/java/software/amazon/awssdk/eventstreamrpc/RpcServer.java

@@ -32,6 +32,7 @@ public class RpcServer implements AutoCloseable {
     private ServerTlsContext tlsContext;
     private ServerListener listener;
     private AtomicBoolean serverRunning;
+    private int boundPort = -1;
 
     public RpcServer(EventLoopGroup eventLoopGroup, SocketOptions socketOptions, TlsContextOptions tlsContextOptions, String hostname, int port, EventStreamRPCServiceHandler serviceHandler) {
         this.eventLoopGroup = eventLoopGroup;
@@ -72,9 +73,21 @@ public void onConnectionShutdown(ServerConnection serverConnection, int errorCod
                     LOGGER.info("Server connection closed code [" + CRT.awsErrorString(errorCode) + "]: " + serverConnection.getResourceLogDescription());
                 }
             });
+
+        boundPort = listener.getBoundPort();
+
         LOGGER.info("IpcServer started...");
     }
 
+    /**
+     * Get port bound to.
+     *
+     * @return port number that service is bound to.
+     */
+    public int getBoundPort() {
+        return boundPort;
+    }
+
     /**
      * Stops running server and allows the caller to wait on a CompletableFuture
      */

sdk/pom.xml

@@ -42,7 +42,7 @@
     <dependency>
       <groupId>software.amazon.awssdk.crt</groupId>
       <artifactId>aws-crt</artifactId>
-      <version>0.16.9</version>
+      <version>0.16.12</version>
     </dependency>
     <dependency>
       <groupId>org.slf4j</groupId>