fix(enginenetx): give priority to DNS #1592
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This diff refactors the code generating tactics to mix bridge and DNS tactics, such that we avoid trying all bridge tactics before falling back to DNS tactics. In the event in which the bridge is IP or endpoint blocked, this change makes sure we try using DNS tactics earlier, and, if the DNS is working, this means a faster bootstrap. Based on testing, where I replaced the bridge address with 10.0.0.1, we try DNS tactics after 8 seconds. After the first run, if the DNS tactics are working, we would immediately use them before bridge tactics, since we store information about tactics inside the $OONI_HOME/engine dir. Part of ooni/probe#2704.
Previously, we were only testing with DNS returning error, while now we should also have a test case for when it's working given that we're mixing tactics together now.
Co-authored-by: Arturo Filastò <arturo@filasto.net>
Co-authored-by: Arturo Filastò <arturo@filasto.net>
Co-authored-by: Arturo Filastò <arturo@filasto.net>
It's time to run some tests.
bassosimone
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May 9, 2024
In #1592 and previous pull requests, I replaced the policies that embedded mixing logic with neutral policies and external mixing logic, which enabled me to implement what was requested in the #1552 pull request review. Now, with this pull request, I am cleaning up, by removing the policies that we were previously using. Work part of ooni/probe#2704. --------- Co-authored-by: Arturo Filastò <arturo@filasto.net>
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This implements the changes requested in #1552. We rearrange the chains such that the DNS has priority and extended policies come after it. Part of ooni/probe#2704.