Greatly improve connection resets on DoIP and miscellaneous fixes throughout #610
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ferdinandjarisch
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Tasks that terminate with error will produce a stack trace that will be displayed once the interpreter finished. This commit ensures that we consume the stack trace and generate a log message when it happens instead.
Currently we never call wait_for_ecu with a explicit timeout value but instead default on self.timeout. This is unexpected and can be confusing, so instead default to 10s, which is 5x more than the current default of 2s coming from self.timeout
UDSExceptions do not require to reconnect the transport.
Currently max_retry already counts the initial request as well, which is counter-intuitive. This commit effectively turns retries into retries, meaning a value for max_retry of 3 would result in a total of 4 requests sent to the target.
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rumpelsepp
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The TCP connection of DoIP can close midway through a request, currently resulting in broken states. This commit gracefully handles ConnectionErrors while waiting for a response within the retry loop, such that recoverable ConnectionErrors are simply recovered.
This commit adds a loop to the reconnect function to be able to recover also when the very first reconnection-attempt is unsuccessful. The loop is only active, however, when a timeout value is set, which for now will only be the case for DoIP.
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This PR is a collection of multiple fixes and small adaptions at different levels.
Most notably, it greatly improves the handling of ConnectionErrors, especially for DoIP, rendering our transport stack way more resilient against connection losses during, e.g., planned reconnects or unexpected ECU crashes.