Is there any chance to automatically inject the JSAgent to HTML which is delivered by Netty/Vert.x.
Based on what I've seen I'd assume no.
I'm working with a setup where Vert.x/Netty serves a reactive page and there is no other webserver/proxy (except istio ingress) in front of this service, so the only way to inject would be on Netty, or do it manually (with all the drawbacks of it e.g. updating the agent upon config change...)
Apart from that: there is no support for Vert.x for tracing purepaths either, or did someone get this to work (guess with AgentSDK?)
unfortunately it looks like it is somewhat unsupported at the moment. Netty and Vert.x will be picked up by the OneAgent but will lack full visibility into transactions. You would have to instrument the Vert.x request handler with the OneAgent SDK