rename assignment code replica package

1 files changed, 33 insertions, 0 deletions

diff --git a/src/main/java/derms/replica/replica2/ObjectPacket.java b/src/main/java/derms/replica/replica2/ObjectPacket.java
new file mode 100644
index 0000000..65b032f
--- /dev/null
+++ b/src/main/java/derms/replica/replica2/ObjectPacket.java
@@ -0,0 +1,33 @@
+package derms.replica.replica2;
+
+import java.io.*;
+import java.net.DatagramPacket;
+import java.net.SocketAddress;
+
+public class ObjectPacket {
+	public static DatagramPacket create(Serializable obj, SocketAddress remoteAddr) throws IOException {
+		ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
+		ObjectOutputStream objStream = new ObjectOutputStream(byteStream);
+		objStream.writeObject(obj);
+		objStream.flush();
+		byte[] buf = byteStream.toByteArray();
+		objStream.close();
+		return new DatagramPacket(buf, buf.length, remoteAddr);
+	}
+
+	public static <E> E deserialize(DatagramPacket pkt, Class<E> clazz) throws IOException {
+		ObjectInputStream objectStream;
+		try {
+			objectStream = new ObjectInputStream(
+				new ByteArrayInputStream(pkt.getData()));
+		} catch (Exception e) {
+			throw new IOException("failed to create input stream: "+e.getMessage());
+		}
+
+ 		try {
+			return clazz.cast(objectStream.readObject());
+		} catch (Exception e) {
+			throw new IOException(e.getMessage());
+		}
+	}
+}
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