Ztunnel is not general purpose; it has an extremely tight goal.
We can exploit this to make a more efficient protocol, which is critical to achieve our resource footprint goals.

For example, configuring Istio mTLS in Envoy takes roughly 50 lines of JSON (it is in Protobuf, of course, but still relevant).
Because Ztunnel can have Istio semantics baked in, we do not need to encode all this information on the wire.

"_We've switched over to **FastAPI** for our **APIs** [...] I think you'll like it [...]_"

 * <i>endpoint</i> value, and the range is considered to be either <i>open</i> (does not include the
 * endpoint) or <i>closed</i> (includes the endpoint) on that side. With three possibilities on each
 * side, this yields nine basic types of ranges, enumerated below. (Notation: a square bracket
 * ({@code [ ]}) indicates that the range is closed on that side; a parenthesis ({@code ( )}) means

"*Nós trocamos nossas **APIs** por **FastAPI** [...] Acredito que vocês gostarão dele [...]*"

"_We've switched over to **FastAPI** for our **APIs** [...] I think you'll like it [...]_"

"_Мы перешли на **FastAPI** для наших **API** [...] Я думаю, вам тоже понравится [...]_"

"_REST API を構築するための**モダンなフレームワーク**を学びたい方は、**FastAPI** [...] をチェックしてみてください。 [...] 高速で, 使用、習得が簡単です。[...]_"

"_私たちの**API**は**FastAPI**に切り替えました。[...] きっと気に入ると思います。 [...]_"

"_We zijn overgestapt naar **FastAPI** voor onze **API's** [...] Het gaat jou vast ook bevallen [...]_"

"_**API** xidmətlərimizi **FastAPI**-a köçürdük [...] Sizin də bəyənəcəyinizi düşünürük._"

pkg go/build, type Package struct, Directives []Directive #56986
pkg go/build, type Package struct, TestDirectives []Directive #56986
pkg go/build, type Package struct, XTestDirectives []Directive #56986
pkg go/token, method (*File) Lines() []int #57708
pkg go/types, method (*Package) GoVersion() string #61175
pkg html/template, const ErrJSTemplate = 12 #59584
pkg html/template, const ErrJSTemplate ErrorCode #59584