From e1f4dae5c20b2cb98975e6ba16bc73f2a45423e6 Mon Sep 17 00:00:00 2001
From: AsamK <asamk@gmx.de>
Date: Thu, 27 Feb 2025 11:39:31 +0100
Subject: [PATCH] Show better error message when receiving an empty JSON RPC
 line

Fixes #1715
---
 src/main/java/org/asamk/signal/jsonrpc/JsonRpcReader.java | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/main/java/org/asamk/signal/jsonrpc/JsonRpcReader.java b/src/main/java/org/asamk/signal/jsonrpc/JsonRpcReader.java
index 84805e10..327342a2 100644
--- a/src/main/java/org/asamk/signal/jsonrpc/JsonRpcReader.java
+++ b/src/main/java/org/asamk/signal/jsonrpc/JsonRpcReader.java
@@ -151,6 +151,13 @@ public class JsonRpcReader {
     }
 
     private JsonRpcMessage parseJsonRpcMessage(final String input) {
+        if (input.trim().isEmpty()) {
+            jsonRpcSender.sendResponse(JsonRpcResponse.forError(new JsonRpcResponse.Error(JsonRpcResponse.Error.PARSE_ERROR,
+                    "Empty input line",
+                    null), null));
+            return null;
+        }
+
         final JsonNode jsonNode;
         try {
             jsonNode = objectMapper.readTree(input);
-- 
2.50.1