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--- integration_with_other_systems [2020/05/22 10:14] – [GET example] emozolyak
+++ integration_with_other_systems [2021/04/28 07:58] – [Example - connecting to a remote module via its web server] emozolyak
@@ Line 56: / Line 56: @@
 ===== Implementing other requests like PUT =====
-To implement other requests, you can indicate for cURL call that you need custom request
+To implement other requests, you can use special field in the cURL for the custom methods:
 <code lua>
@@ Line 100: / Line 100: @@
 {{ ::json_viewer.png?direct&600 |}}
+===== Notes on cURL usage =====
+<WRAP center round important 60%>
+In the fw of 4.0 version, the following issue was reported:
+When there are multiple cURL requests from the WebHMI to the unavailable resource, a system crash may happen. The timeout settings won't affect the sysem behaviour. Use this feature with care when you need cyclical call of multiple cURLs in your scripts:
+  * use one script which detect availablity of the resource and locks following execution for a while
+  * use external watchdog circuit to reset WebHMI if you use it to control mission - critical system.
+</WRAP>