{"action":"created","issue":{"url":"https://api.github.com/repos/cloudendpoints/esp/issues/443","repository_url":"https://api.github.com/repos/cloudendpoints/esp","labels_url":"https://api.github.com/repos/cloudendpoints/esp/issues/443/labels{/name}","comments_url":"https://api.github.com/repos/cloudendpoints/esp/issues/443/comments","events_url":"https://api.github.com/repos/cloudendpoints/esp/issues/443/events","html_url":"https://github.com/cloudendpoints/esp/issues/443","id":356625667,"node_id":"MDU6SXNzdWUzNTY2MjU2Njc=","number":443,"title":"[GRPC]: ESP silently fails if request has Connection header","user":{"login":"burdiyan","id":1793789,"node_id":"MDQ6VXNlcjE3OTM3ODk=","avatar_url":"https://avatars0.githubusercontent.com/u/1793789?v=4","gravatar_id":"","url":"https://api.github.com/users/burdiyan","html_url":"https://github.com/burdiyan","followers_url":"https://api.github.com/users/burdiyan/followers","following_url":"https://api.github.com/users/burdiyan/following{/other_user}","gists_url":"https://api.github.com/users/burdiyan/gists{/gist_id}","starred_url":"https://api.github.com/users/burdiyan/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/burdiyan/subscriptions","organizations_url":"https://api.github.com/users/burdiyan/orgs","repos_url":"https://api.github.com/users/burdiyan/repos","events_url":"https://api.github.com/users/burdiyan/events{/privacy}","received_events_url":"https://api.github.com/users/burdiyan/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-09-04T01:42:36Z","updated_at":"2018-09-04T17:48:01Z","closed_at":null,"author_association":"NONE","body":"When you setup Nginx Ingress Controller in Kubernetes in front of ESP, by default Ingress Controller sends `Connection` header using GRPC backend protocol (which I will report as a separate bug for them) which violates HTTP2 spec.\r\n\r\nThe issue with ESP is that it silently fails without any notice. It took me almost 4 days to discover this problem. If you enable debug mode ESP says `client sent HTTP/2 request with \"Connection\" header while reading client request headers` with level of `info`, which probably should be error or warn at least."},"comment":{"url":"https://api.github.com/repos/cloudendpoints/esp/issues/comments/418458356","html_url":"https://github.com/cloudendpoints/esp/issues/443#issuecomment-418458356","issue_url":"https://api.github.com/repos/cloudendpoints/esp/issues/443","id":418458356,"node_id":"MDEyOklzc3VlQ29tbWVudDQxODQ1ODM1Ng==","user":{"login":"qiwzhang","id":11790727,"node_id":"MDQ6VXNlcjExNzkwNzI3","avatar_url":"https://avatars0.githubusercontent.com/u/11790727?v=4","gravatar_id":"","url":"https://api.github.com/users/qiwzhang","html_url":"https://github.com/qiwzhang","followers_url":"https://api.github.com/users/qiwzhang/followers","following_url":"https://api.github.com/users/qiwzhang/following{/other_user}","gists_url":"https://api.github.com/users/qiwzhang/gists{/gist_id}","starred_url":"https://api.github.com/users/qiwzhang/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/qiwzhang/subscriptions","organizations_url":"https://api.github.com/users/qiwzhang/orgs","repos_url":"https://api.github.com/users/qiwzhang/repos","events_url":"https://api.github.com/users/qiwzhang/events{/privacy}","received_events_url":"https://api.github.com/users/qiwzhang/received_events","type":"User","site_admin":false},"created_at":"2018-09-04T17:48:01Z","updated_at":"2018-09-04T17:48:01Z","author_association":"CONTRIBUTOR","body":"The code is in Nginx core, not in ESP handler.  You may have to file this issue to Nginx. "}}
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