[jira] [Updated] (TS-4041) Refine squid codes to distinguish connection shutdown causes

["Leif Hedstrom (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TS-4041?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Leif Hedstrom updated TS-4041:
------------------------------
    Fix Version/s: 6.1.0

> Refine squid codes to distinguish connection shutdown causes
> ------------------------------------------------------------
>
>                 Key: TS-4041
>                 URL: https://issues.apache.org/jira/browse/TS-4041
>             Project: Traffic Server
>          Issue Type: Improvement
>          Components: Logging
>            Reporter: Susan Hinrichs
>             Fix For: 6.1.0
>
>
> SQUID_LOG_ERR_CLIENT_ABORT is used in multiple scenarios.  The ambiguity between these scenarios has caused us to take some false turns in debugging failures.  Based on code inspection, CLIENT_ABORT will show up in the following cases.
> * The client sends an EOS unexpectedy. CLIENT_ABORT seems completely appropriate.
> * The client VC times out (either inactive or active timeout). CLIENT_ABORT doesn't seem right here. Perhaps SQUID_LOG_ERR_READ_TIMEOUT would be better. That seems to be currently used for server side timeouts. Might be nice to have a differentiation on which side timed out.
> * The client VC has a read failure. This would include the SSL_read failure case. Could use SQUID_LOG_ERR_READ_ERROR. Currently only used if the server side sends EOS before end of expected data. Again differentiating server side and client side error would be beneficial.
> How fixed are the squid error codes?  Could we add more codes?  If so, we could distinguish between the client-side failures and server-side failures by adding the following codes.
>     * Use CLIENT_ABORT only for for client sending EOS too early.
>     * Use CLIENT_READ_TIMEOUT for inactive/active timeouts on client side.
>     * Use CLIENT_READ_ERROR for read failures on client side.



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