--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/main/java/net/borgac/clusterrpc/client/RpcException.java	Sun Sep 25 15:17:36 2016 +0200
@@ -0,0 +1,65 @@
+package net.borgac.clusterrpc.client;
+
+/**
+ * An exception that can occur while handling RPC communication.
+ *
+ * @author lbo
+ */
+public class RpcException extends Exception {
+
+    private static final long serialVersionUID = 1L;
+
+    private Exception inner;
+    private String message;
+    private final Reason reason;
+
+    RpcException(Exception inner, Reason reason, String message) {
+        this.inner = inner;
+        this.message = message;
+        this.reason = reason;
+    }
+
+    RpcException(Reason cause, String reason) {
+        this.message = reason;
+        this.reason = cause;
+    }
+
+    RpcException(Reason cause) {
+        this.reason = cause;
+    }
+
+    @Override
+    public Throwable getCause() {
+        return inner;
+    }
+
+    public Reason getReason() {
+        return reason;
+    }
+
+    @Override
+    public String toString() {
+        if (inner != null) {
+            return String.format("%s: %s (%s)", message, inner.toString(), reason.toString());
+        } else if (message != null && reason != null) {
+            return String.format("%s (%s)", message, reason.toString());
+        } else if (reason != null) {
+            return String.format("%s exception", reason.toString());
+        } else {
+            return "Unknown exception";
+        }
+    }
+
+    /**
+     * A cause for an exception.
+     *
+     */
+    public static enum Reason {
+        UNKNOWN,
+        IO_ERROR,
+        RPC_PROTOCOL_ERROR,
+        ENCODING_ERROR,
+        DECODING_ERROR,
+        UNEXPECTED_STATE,
+    }
+}