Updated build requirements to Java 21

- Added default constructors with comments
- Upgraded CodeQL Actions from 2 to 3

.github/workflows/build.yml

@@ -19,18 +19,18 @@ jobs:
       - name: Checkout Sources
         uses: actions/checkout@v4
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@v2
+        uses: github/codeql-action/init@v3
         with:
           languages: java
       - name: Setup Java JDK
         uses: actions/setup-java@v4
         with:
-          java-version: '17'
+          java-version: '21'
           distribution: 'zulu'
           cache: 'maven'
       - name: Build
         run: ./mvnw --batch-mode --update-snapshots verify
       - name: Codecov
         uses: codecov/codecov-action@v3
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@v2
+        uses: github/codeql-action/analyze@v3

.github/workflows/release.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Setup Java JDK
         uses: actions/setup-java@v4
         with:
-          java-version: '17'
+          java-version: '21'
           distribution: 'zulu'
           cache: 'maven'
       - name: Release

README.md

@@ -10,7 +10,7 @@ Java Socket library supporting SOCKS and HTTP proxy servers with authentication
 
 # Build Requirements
 
-- Java 17
+- Java 21
 - Maven 3.9
 
 # Runtime Requirements

src/main/java/com/exceptionfactory/socketbroker/protocol/ByteBufferEncoder.java

@@ -22,6 +22,13 @@
  * ByteBuffer Encoder reads populated byte array contents of the provided buffer
  */
 public class ByteBufferEncoder implements PacketEncoder<ByteBuffer> {
+    /**
+     * Default constructor for Byte Buffer Encoder
+     */
+    public ByteBufferEncoder() {
+
+    }
+
     /**
      * Get encoded buffer after rewinding and read byte array based on the buffer limit length
      *

src/main/java/com/exceptionfactory/socketbroker/protocol/StringEncoder.java

@@ -22,6 +22,13 @@
  * String Encoder converts provided sources to byte arrays using US-ASCII encoding
  */
 public class StringEncoder implements PacketEncoder<String> {
+    /**
+     * Default constructor for Byte Buffer Encoder
+     */
+    public StringEncoder() {
+
+    }
+
     /**
      * Get bytes encoded using US-ASCII
      *

src/main/java/com/exceptionfactory/socketbroker/protocol/UnicodeStandardCharacterArrayEncoder.java

@@ -26,6 +26,13 @@
 public class UnicodeStandardCharacterArrayEncoder implements PacketEncoder<char[]> {
     private static final PacketEncoder<ByteBuffer> BYTE_BUFFER_ENCODER = new ByteBufferEncoder();
 
+    /**
+     * Default constructor for Byte Buffer Encoder
+     */
+    public UnicodeStandardCharacterArrayEncoder() {
+
+    }
+
     /**
      * Get bytes encoded using UTF-8
      *

src/main/java/com/exceptionfactory/socketbroker/protocol/UnicodeStandardStringEncoder.java

@@ -22,6 +22,13 @@
  * Unicode Standard String Encoder converts provided sources to byte arrays using UTF-8 encoding
  */
 public class UnicodeStandardStringEncoder implements PacketEncoder<String> {
+    /**
+     * Default constructor for Byte Buffer Encoder
+     */
+    public UnicodeStandardStringEncoder() {
+
+    }
+
     /**
      * Get bytes encoded using UTF-8
      *

src/main/java/com/exceptionfactory/socketbroker/protocol/http/HttpConnectSocketBroker.java

@@ -57,6 +57,13 @@ public class HttpConnectSocketBroker implements SocketBroker {
 
     private static final String CONNECTION_FAILED = "HTTP Connection Failed: Status [%d] Reason [%s]";
 
+    /**
+     * Default constructor for HTTP CONNECT implementation of Socket Broker
+     */
+    public HttpConnectSocketBroker() {
+
+    }
+
     /**
      * Request connection to remote address through socket connected to HTTP Proxy Server
      *

src/main/java/com/exceptionfactory/socketbroker/protocol/http/authentication/StandardAuthenticationChallengeParser.java

@@ -38,6 +38,13 @@ public class StandardAuthenticationChallengeParser implements AuthenticationChal
 
     private static final String VALUE_GROUP = "value";
 
+    /**
+     * Default constructor for Standard Authentication Challenge Parser
+     */
+    public StandardAuthenticationChallengeParser() {
+
+    }
+
     /**
      * Get Authentication Challenge from challenge source containing scheme and parameters
      *

src/main/java/com/exceptionfactory/socketbroker/protocol/http/authorization/BasicProxyAuthorizationProvider.java

@@ -45,6 +45,13 @@ public class BasicProxyAuthorizationProvider implements ProxyAuthorizationProvid
 
     private static final int SEPARATOR_LENGTH = 1;
 
+    /**
+     * Default constructor for HTTP Basic implementation of Proxy Authorization Provider
+     */
+    public BasicProxyAuthorizationProvider() {
+
+    }
+
     /**
      * Get Proxy Authorization Credentials formatted according to RFC 7617 Section 2
      *

src/main/java/com/exceptionfactory/socketbroker/protocol/socks/Socks5SocketBroker.java

@@ -57,6 +57,13 @@ public class Socks5SocketBroker implements SocketBroker {
 
     private static final PacketDecoder<SocksReply> REPLY_DECODER = new SocksReplyDecoder();
 
+    /**
+     * Default constructor for SOCKS5 implementation of Socket Broker
+     */
+    public Socks5SocketBroker() {
+
+    }
+
     /**
      * Connect to SOCKS server using provided Socket and request connection to the specified remote address
      *