Change network.transport from recommended to opt-in in the HTTP sem…

…conv (open-telemetry#402) Co-authored-by: Joao Grassi <[email protected]>
trisch-me · Oct 17, 2023 · d8afa1e · d8afa1e
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -13,6 +13,8 @@ release.
   ([#374](https://github.com/open-telemetry/semantic-conventions/pull/374))
 - BREAKING: Define url.scheme in terms of logical operation in HTTP server semconv.
   ([#376](https://github.com/open-telemetry/semantic-conventions/pull/376))
+- BREAKING: Change `network.transport` from recommended to opt-in in HTTP semconv.
+  ([#402](https://github.com/open-telemetry/semantic-conventions/pull/402))
 
 ### Features
 

diff --git a/model/trace/http.yaml b/model/trace/http.yaml
@@ -20,8 +20,10 @@ groups:
         sampling_relevant: true
         requirement_level: required
       - ref: network.transport
-        requirement_level:
-          conditionally_required: If not default (`tcp` for `HTTP/1.1` and `HTTP/2`, `udp` for `HTTP/3`).
+        requirement_level: opt_in
+        note: >
+          Generally `tcp` for `HTTP/1.0`, `HTTP/1.1`, and `HTTP/2`. Generally `udp` for `HTTP/3`.
+          Other obscure implementations are possible.
       - ref: network.type
       - ref: user_agent.original