{"action":"closed","issue":{"url":"https://api.github.com/repos/grpc/grpc/issues/12867","repository_url":"https://api.github.com/repos/grpc/grpc","labels_url":"https://api.github.com/repos/grpc/grpc/issues/12867/labels{/name}","comments_url":"https://api.github.com/repos/grpc/grpc/issues/12867/comments","events_url":"https://api.github.com/repos/grpc/grpc/issues/12867/events","html_url":"https://github.com/grpc/grpc/issues/12867","id":263546983,"number":12867,"title":"Backoff timing in C does not follow specification","user":{"login":"muxi","id":1054404,"avatar_url":"https://avatars1.githubusercontent.com/u/1054404?v=4","gravatar_id":"","url":"https://api.github.com/users/muxi","html_url":"https://github.com/muxi","followers_url":"https://api.github.com/users/muxi/followers","following_url":"https://api.github.com/users/muxi/following{/other_user}","gists_url":"https://api.github.com/users/muxi/gists{/gist_id}","starred_url":"https://api.github.com/users/muxi/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/muxi/subscriptions","organizations_url":"https://api.github.com/users/muxi/orgs","repos_url":"https://api.github.com/users/muxi/repos","events_url":"https://api.github.com/users/muxi/events{/privacy}","received_events_url":"https://api.github.com/users/muxi/received_events","type":"User","site_admin":false},"labels":[{"id":721730757,"url":"https://api.github.com/repos/grpc/grpc/labels/area/client%20channel","name":"area/client channel","color":"efdb40","default":false},{"id":166332702,"url":"https://api.github.com/repos/grpc/grpc/labels/area/core","name":"area/core","color":"efdb40","default":false}],"state":"closed","locked":false,"assignee":{"login":"dgquintas","id":120217,"avatar_url":"https://avatars3.githubusercontent.com/u/120217?v=4","gravatar_id":"","url":"https://api.github.com/users/dgquintas","html_url":"https://github.com/dgquintas","followers_url":"https://api.github.com/users/dgquintas/followers","following_url":"https://api.github.com/users/dgquintas/following{/other_user}","gists_url":"https://api.github.com/users/dgquintas/gists{/gist_id}","starred_url":"https://api.github.com/users/dgquintas/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dgquintas/subscriptions","organizations_url":"https://api.github.com/users/dgquintas/orgs","repos_url":"https://api.github.com/users/dgquintas/repos","events_url":"https://api.github.com/users/dgquintas/events{/privacy}","received_events_url":"https://api.github.com/users/dgquintas/received_events","type":"User","site_admin":false},"assignees":[{"login":"dgquintas","id":120217,"avatar_url":"https://avatars3.githubusercontent.com/u/120217?v=4","gravatar_id":"","url":"https://api.github.com/users/dgquintas","html_url":"https://github.com/dgquintas","followers_url":"https://api.github.com/users/dgquintas/followers","following_url":"https://api.github.com/users/dgquintas/following{/other_user}","gists_url":"https://api.github.com/users/dgquintas/gists{/gist_id}","starred_url":"https://api.github.com/users/dgquintas/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dgquintas/subscriptions","organizations_url":"https://api.github.com/users/dgquintas/orgs","repos_url":"https://api.github.com/users/dgquintas/repos","events_url":"https://api.github.com/users/dgquintas/events{/privacy}","received_events_url":"https://api.github.com/users/dgquintas/received_events","type":"User","site_admin":false}],"milestone":null,"comments":4,"created_at":"2017-10-06T19:21:56Z","updated_at":"2017-11-04T18:22:29Z","closed_at":"2017-11-04T18:22:29Z","author_association":"CONTRIBUTOR","body":"Backoff timing in C is supposed to start with an initial backoff of 1 second and increase by a factor of 1.6 for each failed attempt, according to [this specification](https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md).\r\n\r\nCurrent behavior in C based libraries are different from the spec, starting with a 20s initial backoff and keep increasing. Potentially the problem could be a [misuse](https://github.com/grpc/grpc/blob/3640b4084ac8485ef99ab3162cae7b8b079bbf6b/src/core/ext/filters/client_channel/subchannel.cc#L51) of MIN_CONNECT_TIMEOUT as a backoff related parameter (likely INITIAL_BACKOFF). "}}
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