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https://issues.apache.org/jira/browse/PLC4X-271?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Christofer Dutz updated PLC4X-271:
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Fix Version/s: (was: 0.9.0)
> [S7] Implement connection closing for S7 protocol
> -------------------------------------------------
>
> Key: PLC4X-271
> URL: https://issues.apache.org/jira/browse/PLC4X-271
> Project: Apache PLC4X
> Issue Type: Task
> Components: Driver-S7
> Affects Versions: 0.7.0, 0.8.0
> Reporter: Christofer Dutz
> Priority: Major
> Labels: easy-fix, low-hanging-fruit
> Attachments: s7-old-generation.pcapng
>
>
> It seems I skipped porting the code to gracefully close a connection in the
> transition from 0.6 to 0.7. This is a great low-hanging fruit, so I'll leave
> this here for someone to picup.
> We already generally have the parts in place, however they are not quite
> correct:
> [https://github.com/apache/plc4x/blob/develop/protocols/s7/src/main/resources/protocols/s7/s7.mspec]
> Defines a type: COTPPacketDisconnectRequest, however the third parameter is
> not class, but disconnectReason.
> The old TPDU is defined here:
> [https://github.com/apache/plc4x/blob/rel/0.6/plc4j/protocols/iso-tp/src/main/java/org/apache/plc4x/java/isotp/protocol/model/tpdus/DisconnectRequestTpdu.java]
> This should be an enum type. The constant names and values can be taken from
> here:
> [https://github.com/apache/plc4x/blob/rel/0.6/plc4j/protocols/iso-tp/src/main/java/org/apache/plc4x/java/isotp/protocol/model/types/DisconnectReason.java]
> As soon as these changes are in place and the code has been generated, the
> logic for closing can be implemented by being inspired by the old drivers
> code:
> [https://github.com/apache/plc4x/blob/rel/0.6/plc4j/drivers/s7/src/main/java/org/apache/plc4x/java/s7/connection/S7PlcConnection.java]
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