How does Linkerd2 tap get the body of the response?

[wanggithub08]

Hey guys,I execute the command: linkerd viz tap -n booksapp deploy/webapp -o wide ,and can see the response code and response length.How can Linkerd2 tap get the body of the response?

[mateiidavid]

@wanggithub08 unfortunately at the moment tap does not support response bodies. I noticed you opened an issue for it, we can track some design thoughts there, but presently, it won't work.

For a full list of data exposed by tap, you can have a look at the protobuf file: https://github.com/linkerd/linkerd2-proxy-api/blob/main/proto/tap.proto

[wanggithub08]

Thanks，Will you support it in the future? If I add this feature, can you give me some advice?

[kleimkuhler]

There is design that we still would need to work through for this, but since we did not have an a parent issue for this already let's move discussion there (#8359).

[wanggithub08]

ok, waiting for your good news.