As stated in the title, I have a PLC that utilizes the AsHttp library to implement a Webservice Server. A Web client, implemented via JavaScript, accesses it through ports 80 or 81; ideally, port 81 is preferred for port separation. These are my requirements. During use, I encountered two issues that have been bothering me.
If the process data of the PLC is accessed through ports other than 80 (such as 81 or 82), there will be a cross-origin resource sharing (CORS) issue. JavaScript returns a 200 status code (which is correct) and indicates that the CORS policy has been blocked. Therefore, if we configure the backend to address this CORS issue by allowing all external requests and responding, what should we do?
Regarding the issue of the return value from the WebService request body, I am currently using the AsHttp sample, but the value returned by Get is a String. The client expects a file-based return, such as in XML or JSON format like Fig.
Can anyone from BRCommunity help @jianing.kang?