pub.client:http is the normal way to connect to a web server from within a webMethods service.
I ways trying to suggest that it would be useful to simulate what webMethods is trying to do with pub.client:http using another tool.
If you can open an IE web browser window on the SAME machine that your Integration Server is installed on, and then get a good response using the EXACT SAME URL, then it seems there is a problem in your input variables for the webMethods http service.
If the browser attempt fails, there is an issue outside of webMethods.
Sorry if this wasn’t clear.
#Integration-Server-and-ESB#B2B-Integration#webMethods