{"action":"created","comment":{"url":"https://api.github.com/repos/BuoyantIO/linkerd/pulls/comments/78475942","id":78475942,"diff_hunk":"@@ -165,6 +165,47 @@ Key | Default Value | Description\n dstPrefix | `http` | The `dstPrefix` as set in the routers block.\n urlPath | N/A | A path from the URL whose number of segments is set in the identifier block.\n \n+<a name=\"header-identifier\"></a>\n+### Header Identifier\n+\n+kind: `io.l5d.header`\n+\n+With this identifier, HTTP requests are turned into names based only on the\n+value of an HTTP header.  If the header value is a valid path, that path is\n+used.  Otherwise, the header value is converted to a path with one path segment.\n+\n+#### Namer Configuration:\n+\n+> With this configuration, the value of the `my-header` HTTP header will be used\n+as the logical name.\n+\n+```yaml\n+routers:\n+- protocol: http\n+  identifier:\n+    kind: io.l5d.header\n+    header: my-header\n+  servers:\n+  - port: 5000\n+```\n+\n+Key | Default Value | Description\n+--- | ------------- | -----------\n+header | `l5d-dst-concrete` | The name of the HTTP header to use","path":"linkerd/docs/protocol-http.md","position":30,"original_position":30,"commit_id":"68b101b3af3031058a84a0ed7a531fe342f9e4e4","original_commit_id":"68b101b3af3031058a84a0ed7a531fe342f9e4e4","user":{"login":"olix0r","id":240738,"avatar_url":"https://avatars.githubusercontent.com/u/240738?v=3","gravatar_id":"","url":"https://api.github.com/users/olix0r","html_url":"https://github.com/olix0r","followers_url":"https://api.github.com/users/olix0r/followers","following_url":"https://api.github.com/users/olix0r/following{/other_user}","gists_url":"https://api.github.com/users/olix0r/gists{/gist_id}","starred_url":"https://api.github.com/users/olix0r/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/olix0r/subscriptions","organizations_url":"https://api.github.com/users/olix0r/orgs","repos_url":"https://api.github.com/users/olix0r/repos","events_url":"https://api.github.com/users/olix0r/events{/privacy}","received_events_url":"https://api.github.com/users/olix0r/received_events","type":"User","site_admin":false},"body":"I'm find this naming to be unclear. Elsewhere, we describe pre-delegation names (i.e. Dst.Path) as _logical_ and post-delegation names (i.e. Dst.Id) as _concrete_.  In this context, the value isn't really a concrete name.  We should try to reconcile this.\r\n- `l5d-dst-name`?\r\n- `l5d-dst-path?\r\n- ?","created_at":"2016-09-12T23:52:47Z","updated_at":"2016-09-12T23:52:47Z","html_url":"https://github.com/BuoyantIO/linkerd/pull/638#discussion_r78475942","pull_request_url":"https://api.github.com/repos/BuoyantIO/linkerd/pulls/638","_links":{"self":{"href":"https://api.github.com/repos/BuoyantIO/linkerd/pulls/comments/78475942"},"html":{"href":"https://github.com/BuoyantIO/linkerd/pull/638#discussion_r78475942"},"pull_request":{"href":"https://api.github.com/repos/BuoyantIO/linkerd/pulls/638"}}},"pull_request":{"url":"https://api.github.com/repos/BuoyantIO/linkerd/pulls/638","id":84397192,"html_url":"https://github.com/BuoyantIO/linkerd/pull/638","diff_url":"https://github.com/BuoyantIO/linkerd/pull/638.diff","patch_url":"https://github.com/BuoyantIO/linkerd/pull/638.patch","issue_url":"https://api.github.com/repos/BuoyantIO/linkerd/issues/638","number":638,"state":"open","locked":false,"title":"Add header identifier","user":{"login":"adleong","id":3979810,"avatar_url":"https://avatars.githubusercontent.com/u/3979810?v=3","gravatar_id":"","url":"https://api.github.com/users/adleong","html_url":"https://github.com/adleong","followers_url":"https://api.github.com/users/adleong/followers","following_url":"https://api.github.com/users/adleong/following{/other_user}","gists_url":"https://api.github.com/users/adleong/gists{/gist_id}","starred_url":"https://api.github.com/users/adleong/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/adleong/subscriptions","organizations_url":"https://api.github.com/users/adleong/orgs","repos_url":"https://api.github.com/users/adleong/repos","events_url":"https://api.github.com/users/adleong/events{/privacy}","received_events_url":"https://api.github.com/users/adleong/received_events","type":"User","site_admin":false},"body":"Fixes #373\r\n\r\nWith this identifier, HTTP requests are turned into names based only on the value of an HTTP header.  If the header value is a valid path, that path is used.  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