6 files changed, 63 insertions, 0 deletions
diff --git a/src/main/java/com/keuin/psmb4j/error/BadProtocolException.java b/src/main/java/com/keuin/psmb4j/error/BadProtocolException.java
new file mode 100644
index 0000000..893b8c3
--- /dev/null
+++ b/src/main/java/com/keuin/psmb4j/error/BadProtocolException.java
@@ -0,0 +1,13 @@
+package com.keuin.psmb4j.error;
+
+/**
+ * The server speaks a bad protocol which is not compatible to the client.
+ */
+public class BadProtocolException extends RuntimeException {
+    public BadProtocolException() {
+    }
+
+    public BadProtocolException(String message) {
+        super(message);
+    }
+}
diff --git a/src/main/java/com/keuin/psmb4j/error/CommandFailureException.java b/src/main/java/com/keuin/psmb4j/error/CommandFailureException.java
new file mode 100644
index 0000000..0ac6f07
--- /dev/null
+++ b/src/main/java/com/keuin/psmb4j/error/CommandFailureException.java
@@ -0,0 +1,10 @@
+package com.keuin.psmb4j.error;
+
+/**
+ * The previous command was rejected by the server for certain reasons.
+ */
+public class CommandFailureException extends ProtocolFailureException {
+    public CommandFailureException(String message) {
+        super(message);
+    }
+}
diff --git a/src/main/java/com/keuin/psmb4j/error/IllegalParameterException.java b/src/main/java/com/keuin/psmb4j/error/IllegalParameterException.java
new file mode 100644
index 0000000..0fe960b
--- /dev/null
+++ b/src/main/java/com/keuin/psmb4j/error/IllegalParameterException.java
@@ -0,0 +1,10 @@
+package com.keuin.psmb4j.error;
+
+/**
+ * Some parameters are illegal according to current version's protocol definition.
+ */
+public class IllegalParameterException extends ServerMisbehaveException {
+    public IllegalParameterException(String message) {
+        super(message);
+    }
+}
diff --git a/src/main/java/com/keuin/psmb4j/error/ProtocolFailureException.java b/src/main/java/com/keuin/psmb4j/error/ProtocolFailureException.java
new file mode 100644
index 0000000..55e6e30
--- /dev/null
+++ b/src/main/java/com/keuin/psmb4j/error/ProtocolFailureException.java
@@ -0,0 +1,13 @@
+package com.keuin.psmb4j.error;
+
+/**
+ * Expected protocol error.
+ */
+public class ProtocolFailureException extends Exception {
+    public ProtocolFailureException() {
+    }
+
+    public ProtocolFailureException(String message) {
+        super(message);
+    }
+}
diff --git a/src/main/java/com/keuin/psmb4j/error/ServerMisbehaveException.java b/src/main/java/com/keuin/psmb4j/error/ServerMisbehaveException.java
new file mode 100644
index 0000000..8aa1449
--- /dev/null
+++ b/src/main/java/com/keuin/psmb4j/error/ServerMisbehaveException.java
@@ -0,0 +1,10 @@
+package com.keuin.psmb4j.error;
+
+/**
+ * The server made an illegal response, which conflicts to the protocol definition.
+ */
+public class ServerMisbehaveException extends BadProtocolException {
+    public ServerMisbehaveException(String message) {
+        super(message);
+    }
+}
diff --git a/src/main/java/com/keuin/psmb4j/error/UnsupportedProtocolException.java b/src/main/java/com/keuin/psmb4j/error/UnsupportedProtocolException.java
new file mode 100644
index 0000000..a6cc935
--- /dev/null
+++ b/src/main/java/com/keuin/psmb4j/error/UnsupportedProtocolException.java
@@ -0,0 +1,7 @@
+package com.keuin.psmb4j.error;
+
+/**
+ * The PSMB server does not support our protocol version.
+ */
+public class UnsupportedProtocolException extends BadProtocolException {
+}