From 1e66845e8a4306903bd7201a746fc5816cf509b7 Mon Sep 17 00:00:00 2001
From: hkr04 <hyde_2002@foxmail.com>
Date: Wed, 19 Mar 2025 18:43:03 +0800
Subject: [PATCH] stdio_client: fix bug with json

---
 src/mcp_stdio_client.cpp | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/mcp_stdio_client.cpp b/src/mcp_stdio_client.cpp
index a1ff47f..ae413b4 100644
--- a/src/mcp_stdio_client.cpp
+++ b/src/mcp_stdio_client.cpp
@@ -785,11 +785,14 @@ json stdio_client::send_jsonrpc(const request& req) {
     if (status == std::future_status::ready) {
         json response = response_future.get();
         
-        if (response.contains("isError") && response["isError"].get<bool>()) {
-            int code = response["error"]["code"];
-            std::string message = response["error"]["message"];
-            
-            throw mcp_exception(static_cast<error_code>(code), message);
+        if (response.contains("isError") && response["isError"].is_boolean() && response["isError"].get<bool>()) {
+            if (response.contains("error") && response["error"].is_object()) {
+                const auto& err_obj = response["error"];
+                int code = err_obj.contains("code") ? err_obj["code"].get<int>() : static_cast<int>(error_code::internal_error);
+                std::string message = err_obj.value("message", "");
+                // Handle error
+                throw mcp_exception(static_cast<error_code>(code), message);
+            }
         }
         
         return response;