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It's strongly recommended to update your libmodbus library if you use it in a slave/server application in a not trusted environment. Debian package of libmodbus 3.0.4 already contains a patch to mitigate the exploit but the patch isn't as strong than this one.
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The function name was confusing because the write operation is performed before the read. Take care to swap the arguments in the migration process.
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These new functions seem clearer than the recent modbus_receive_from function IHMO. This change fixes the bandwidth-server-many-up program.
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These functions have no meaning in RTU so it's better to specialize the names and remove them from the backend. - remove the functions from the backend - update tests to handle RTU mode (master and slave) - add command line options to tests (rtu or tcp)
