{"action":"opened","issue":{"url":"https://api.github.com/repos/confluentinc/confluent-kafka-dotnet/issues/277","repository_url":"https://api.github.com/repos/confluentinc/confluent-kafka-dotnet","labels_url":"https://api.github.com/repos/confluentinc/confluent-kafka-dotnet/issues/277/labels{/name}","comments_url":"https://api.github.com/repos/confluentinc/confluent-kafka-dotnet/issues/277/comments","events_url":"https://api.github.com/repos/confluentinc/confluent-kafka-dotnet/issues/277/events","html_url":"https://github.com/confluentinc/confluent-kafka-dotnet/issues/277","id":246457396,"number":277,"title":"SASL Handshake not supported by broker false alarm","user":{"login":"vinodres","id":5779146,"avatar_url":"https://avatars0.githubusercontent.com/u/5779146?v=4","gravatar_id":"","url":"https://api.github.com/users/vinodres","html_url":"https://github.com/vinodres","followers_url":"https://api.github.com/users/vinodres/followers","following_url":"https://api.github.com/users/vinodres/following{/other_user}","gists_url":"https://api.github.com/users/vinodres/gists{/gist_id}","starred_url":"https://api.github.com/users/vinodres/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/vinodres/subscriptions","organizations_url":"https://api.github.com/users/vinodres/orgs","repos_url":"https://api.github.com/users/vinodres/repos","events_url":"https://api.github.com/users/vinodres/events{/privacy}","received_events_url":"https://api.github.com/users/vinodres/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2017-07-28T20:57:01Z","updated_at":"2017-07-28T20:57:01Z","closed_at":null,"body":"Description\r\n===========\r\nI am keep seeing following error\r\n\r\n> Subscriber Error: Details - Code [Local_Authentication], **IsLocalError** **[True]**, IsBrokerError [False], Reason [sasl_plaintext://mycorpmessaging:9092/2: Failed to initialize SASL authentication: SASL Handshake not supported by broker (required by mechanism SCRAM-SHA-256)]\r\n\r\nBut it does not appear to be preventing the consumer from working. The above error keep on occurring. It appears like the error is just noise.\r\n\r\nHow to reproduce\r\n================\r\nConfigure the client to use SASL and rest of the code is similar to AdvancedConsumer.cs from samples. In my environment the \"bootstrap.servers\" url is a VIP going thru F5 router. \r\n\r\n```\r\nvar config = new Dictionary<string, object>()\r\n                {\r\n                    {\"group.id\", $\"TEST-GROUP\"},\r\n                    {\"client.id\", \"TEST\"},\r\n                    {\"enable.auto.commit\", false},\r\n                    {\"bootstrap.servers\", \"mycorpmessaging:9092\"},\r\n                    //Begin Security config\r\n                    {\"sasl.mechanisms\", \"SCRAM-SHA-256\"},\r\n                    {\"security.protocol\", \"SASL_PLAINTEXT\"},\r\n                    {\"sasl.username\", 'testuser\"},\r\n                    {\"sasl.password\", \"testpassword\"},\r\n                    {\"api.version.request\", \"true\"},\r\n                    //End Security config\r\n                    {\r\n                        //Topic level configuration\r\n                        \"default.topic.config\", new Dictionary<string, object>()\r\n                        {\r\n                            {\"auto.offset.reset\", \"latest\"}\r\n                        }\r\n                    }\r\n                };\r\n```\r\n\r\nWhenever messages are produced, consumer is receiving them without any issues. Everything appears to be working as expected. But the above error is keep on pumping into logs. Just want to see if anyone has any thoughts on what might be causing it.\r\n\r\nAny advice will be greatly appreciated.\r\n\r\nChecklist\r\n=========\r\nPlease provide the following information:\r\n\r\n - [ ] Confluent.Kafka nuget version:0.11.0\r\n - [ ] Apache Kafka version: 0.9\r\n - [ ] Client configuration:\r\n - [ ] Operating system: Windows Server 2016\r\n - [ ] Provide logs (with \"debug\" : \"...\" as necessary in configuration)\r\n - [ ] Provide broker log excerpts\r\n - [ ] Critical issue\r\n"}}
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