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David Goulet
9c42cc1eb2
This is a bit of a complicated commit. It moves code but also refactors part of it. No behavior change, the idea is to split things up so we can better handle and understand how SENDME cells are processed where ultimately it will be easier to handle authenticated SENDMEs (prop289) using the intermediate functions added in this commit. The entry point for the cell arriving at the edge (Client or Exit), is connection_edge_process_relay_cell() for which we look if it is a circuit or stream level SENDME. This commit refactors that part where two new functions are introduced to process each of the SENDME types. The sendme_process_circuit_level() has basically two code paths. If we are a Client (the circuit is origin) or we are an Exit. Depending on which, the package window is updated accordingly. Then finally, we resume the reading on every edge streams on the circuit. The sendme_process_stream_level() applies on the edge connection which will update the package window if needed and then will try to empty the inbuf if need be because we can now deliver more cells. Again, no behavior change but in order to split that code properly into their own functions and outside the relay.c file, code modification was needed. Part of #26840. Signed-off-by: David Goulet <dgoulet@torproject.org>
Tor protects your privacy on the internet by hiding the connection
between your Internet address and the services you use. We believe Tor
is reasonably secure, but please ensure you read the instructions and
configure it properly.
To build Tor from source:
./configure && make && make install
To build Tor from a just-cloned git repository:
sh autogen.sh && ./configure && make && make install
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https://www.torproject.org/
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https://wiki.torproject.org/projects/tor/wiki/doc/TorifyHOWTO
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https://www.torproject.org/docs/faq.html
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See the doc/HACKING directory.
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https://trac.torproject.org/projects/tor/wiki/org/teams/NetworkTeam/CoreTorReleases