Rustls supports fuzz testing using cargo-fuzz. Fuzz tests are automatically run during continuous integration using oss-fuzz. You may also run fuzz tests locally. See the cargo-fuzz setup instructions for requirements.
# List available fuzzing targets.
$ cargo fuzz list
client
deframer
fragment
message
persist
servert
# Run the message fuzz target for a fixed period of time (expressed in seconds).
$ cargo fuzz run message -- -max_total_time=120
# Clean up generated corpus files
git clean --interactive -- ./corpus