move server.socket.* from common http attributes to client and server

semantic_conventions/trace/http.yaml

@@ -24,8 +24,6 @@ groups:
         examples: 3495
       - ref: http.method
         sampling_relevant: true
-      - ref: server.socket.address
-      - ref: server.socket.port
       - ref: net.sock.family
         examples: ['inet', 'inet6']
       - ref: user_agent.original
@@ -83,6 +81,8 @@ groups:
           When [request target](https://www.rfc-editor.org/rfc/rfc9110.html#target.resource) is absolute URI, `server.port` MUST match
           URI port identifier, otherwise it MUST match `Host` header port identifier.
       - ref: server.socket.domain
+      - ref: server.socket.address
+      - ref: server.socket.port
 
   - id: trace.http.server
     prefix: http
@@ -130,6 +130,9 @@ groups:
       - ref: server.socket.address
         requirement_level: opt_in
         brief: Local socket address. Useful in case of a multi-IP host.
+      - ref: server.socket.port
+        requirement_level: opt_in
+        brief: Local socket port. Useful in case of a multi-port host.
       - ref: client.address
         note: >
             The IP address of the original client behind all proxies, if

specification/trace/semantic_conventions/http.md

@@ -72,8 +72,6 @@ sections below.
 | [`net.protocol.name`](span-general.md) | string | Application layer protocol used. The value SHOULD be normalized to lowercase. | `http`; `spdy` | Recommended: if not default (`http`). |
 | [`net.protocol.version`](span-general.md) | string | Version of the application layer protocol used. See note below. [1] | `1.0`; `1.1`; `2.0` | Recommended |
 | [`net.sock.family`](span-general.md) | string | Protocol [address family](https://man7.org/linux/man-pages/man7/address_families.7.html) which is used for communication. | `inet`; `inet6` | Conditionally Required: [2] |
-| [`server.socket.address`](span-general.md) | string | Physical server IP address or Unix socket address. | `10.5.3.2` | Recommended: Only if different than `server.address`. |
-| [`server.socket.port`](span-general.md) | int | Physical server port. | `16456` | Recommended: Only if different than `server.port`. |
 | `user_agent.original` | string | Value of the [HTTP User-Agent](https://www.rfc-editor.org/rfc/rfc9110.html#field.user-agent) header sent by the client. | `CERN-LineMode/2.15 libwww/2.17b3` | Recommended |
 
 **[1]:** `net.protocol.version` refers to the version of the protocol used and might be different from the protocol client's version. If the HTTP client used has a version of `0.27.2`, but sends HTTP version `1.1`, this attribute should be set to `1.1`.
@@ -129,7 +127,9 @@ For an HTTP client span, `SpanKind` MUST be `Client`.
 | `http.resend_count` | int | The ordinal number of request resending attempt (for any reason, including redirects). [2] | `3` | Recommended: if and only if request was retried. |
 | [`server.address`](span-general.md) | string | Host identifier of the ["URI origin"](https://www.rfc-editor.org/rfc/rfc9110.html#name-uri-origin) HTTP request is sent to. [3] | `example.com` | Required |
 | [`server.port`](span-general.md) | int | Port identifier of the ["URI origin"](https://www.rfc-editor.org/rfc/rfc9110.html#name-uri-origin) HTTP request is sent to. [4] | `80`; `8080`; `443` | Conditionally Required: [5] |
+| [`server.socket.address`](span-general.md) | string | Physical server IP address or Unix socket address. | `10.5.3.2` | Recommended: Only if different than `server.address`. |
 | [`server.socket.domain`](span-general.md) | string | The domain name of an immediate peer. [6] | `proxy.example.com` | Recommended |
+| [`server.socket.port`](span-general.md) | int | Physical server port. | `16456` | Recommended: Only if different than `server.port`. |
 
 **[1]:** `http.url` MUST NOT contain credentials passed via URL in form of `https://username:[email protected]/`. In such case the attribute's value should be `https://www.example.com/`.
 
@@ -245,6 +245,7 @@ If the route cannot be determined, the `name` attribute MUST be set as defined i
 | [`server.address`](span-general.md) | string | Name of the local HTTP server that received the request. [4] | `example.com` | Required |
 | [`server.port`](span-general.md) | int | Port of the local HTTP server that received the request. [5] | `80`; `8080`; `443` | Conditionally Required: [6] |
 | [`server.socket.address`](span-general.md) | string | Local socket address. Useful in case of a multi-IP host. | `10.5.3.2` | Opt-In |
+| [`server.socket.port`](span-general.md) | int | Local socket port. Useful in case of a multi-port host. | `16456` | Opt-In |
 
 **[1]:** MUST NOT be populated when this is not supported by the HTTP server framework as the route attribute should have low-cardinality and the URI path can NOT substitute it.
 SHOULD include the [application root](/specification/trace/semantic_conventions/http.md#http-server-definitions) if there is one.