[jira] [Created] (GEODE-8552) Connection is still attempted even if address resolution failed in TcpConn

["Mario Salazar de Torres (Jira)" <ji...@apache.org>]

Mario Salazar de Torres created GEODE-8552:
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             Summary: Connection is still attempted even if address resolution failed in TcpConn
                 Key: GEODE-8552
                 URL: https://issues.apache.org/jira/browse/GEODE-8552
             Project: Geode
          Issue Type: Improvement
          Components: native client
    Affects Versions: 1.13.0, 1.12.0, 1.11.0
            Reporter: Mario Salazar de Torres


Whenever there are problems with DNS resolution, while creating a TcpConn, resolution of the address might fail. Thing is connection is tried and the error you get is the following one:
{noformat}
[fine 2020/08/27 10:56:20.030379 UTC secret-pod-name:1 139944253187840] ThinClientPoolDM::createPoolConnectionToAEndPoint( ): creating a new connection to the endpoint server-2.geode.secret-ns.svc.cluster.local:40404
[fine 2020/08/27 10:56:20.030391 UTC secret-pod-name:1 139944253187840] TcrEndpoint::createNewConnection: connectTimeout =59000000us m_needToConnectInLock=1 appThreadRequest =1
[debug 2020/08/27 10:56:20.030406 UTC secret-pod-name:1 139944253187840] m_expiryTimeVariancePercentage set to: -1
[debug 2020/08/27 10:56:20.030555 UTC secret-pod-name:1 139944253187840] Tcrconnection const isSecondary = 0 and isClientNotification = 0, this = 0x7f4720028cc0,  conn ref to endopint 3
[finest 2020/08/27 10:56:20.033738 UTC secret-pod-name:1 139944253187840] Using socket send buffer size of 64240.
[finest 2020/08/27 10:56:20.033756 UTC secret-pod-name:1 139944253187840] Using socket receive buffer size of 64240.
[debug 2020/08/27 10:56:20.033760 UTC secret-pod-name:1 139944253187840] Creating plain socket stream
[finer 2020/08/27 10:56:20.033786 UTC secret-pod-name:1 139944253187840] Connecting plain socket stream to secret-pod-name:0 waiting 59000000us micro sec
[info 2020/08/27 10:56:20.033884 UTC secret-pod-name:1 139944253187840] IO error in handshake with endpoint[server-2.geode.secret-ns.svc.cluster.local:40404]: TcpConn::connect failed with errno: 99: Cannot assign requested address{noformat}
Which as can be seen it's not really descriptive. So the idea would be to validate the address before the connection happens and log a proper error.



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