1 files changed, 27 insertions, 0 deletions
diff --git a/src/Cepis/InvalidResponseException.cs b/src/Cepis/InvalidResponseException.cs
new file mode 100644
index 0000000..e0be6b5
--- /dev/null
+++ b/src/Cepis/InvalidResponseException.cs
@@ -0,0 +1,27 @@
+namespace Cepis;
+
+/// <summary>
+/// A success status came back with a body that cannot be parsed.
+/// </summary>
+/// <remarks>
+/// In practice this means something between you and the API is answering
+/// instead of it — a captive Wi-Fi portal, a corporate proxy, an HTML error
+/// page. Useful as a diagnosis: the problem is not in your code.
+/// </remarks>
+public sealed class InvalidResponseException : CepisException
+{
+    /// <summary>Create the exception with a message.</summary>
+    /// <param name="message">what went wrong</param>
+    public InvalidResponseException(string message)
+        : base(message)
+    {
+    }
+
+    /// <summary>Create the exception with a message and an underlying cause.</summary>
+    /// <param name="message">what went wrong</param>
+    /// <param name="innerException">the parse failure underneath</param>
+    public InvalidResponseException(string message, Exception? innerException)
+        : base(message, innerException)
+    {
+    }
+}