{"action":"opened","issue":{"url":"https://api.github.com/repos/piwik/piwik/issues/9255","labels_url":"https://api.github.com/repos/piwik/piwik/issues/9255/labels{/name}","comments_url":"https://api.github.com/repos/piwik/piwik/issues/9255/comments","events_url":"https://api.github.com/repos/piwik/piwik/issues/9255/events","html_url":"https://github.com/piwik/piwik/issues/9255","id":118313913,"number":9255,"title":"document cookies, sessions requirements for tracking request","user":{"login":"maboiteaspam","id":530732,"avatar_url":"https://avatars.githubusercontent.com/u/530732?v=3","gravatar_id":"","url":"https://api.github.com/users/maboiteaspam","html_url":"https://github.com/maboiteaspam","followers_url":"https://api.github.com/users/maboiteaspam/followers","following_url":"https://api.github.com/users/maboiteaspam/following{/other_user}","gists_url":"https://api.github.com/users/maboiteaspam/gists{/gist_id}","starred_url":"https://api.github.com/users/maboiteaspam/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/maboiteaspam/subscriptions","organizations_url":"https://api.github.com/users/maboiteaspam/orgs","repos_url":"https://api.github.com/users/maboiteaspam/repos","events_url":"https://api.github.com/users/maboiteaspam/events{/privacy}","received_events_url":"https://api.github.com/users/maboiteaspam/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-11-23T03:31:11Z","updated_at":"2015-11-23T03:31:11Z","closed_at":null,"body":"Hi,\r\n\r\nLooking forward to know if the server is writing, either cookies or session, to the client when a tracking request occur.\r\n\r\nIn my reading, so far, i found out that the job was done in the javascript tracker implementation.\r\n\r\nThis said, the software is pretty huge and have many plugins, thus i find it difficult to get an overview.\r\n\r\nIs there any guideline, reference or document about that ?\r\nIs the server allowed to store session values, is the server allowed to write cookies on the client during a tracking request processing ?\r\n\r\nthanks !"}}