f448fcb347
- Previously, there was a chance of running out of file descriptors
while or after fetching a large number of certificates using sq
network fetch.
- The root cause of that was the use of getaddrinfo(3) to resolve
names, which is a blocking interface, which has to be executed on
a special thread for blocking tasks on the tokio runtime. The
maximum number of these threads is capped at 512 by default, and
these threads can tie up a significant number of file descriptors
in sockets. The threads do close their sockets and go away after
a while, presumably after a timeout. Further, blocking tasks can
not be canceled.
- Do release all thread pool resources after doing the fetch.
- Also, switch to the hickory crate for doing name lookups. This
implements a non-blocking interface, and releases resources in a
timely fashion.
- Fixes #335.
sq, the Sequoia-PGP command line tool
Sequoia-PGP is an implementation of OpenPGP in Rust. It includes a
suite of library crates, which are meant to be used from applications.
This crate provides the sq command line application. sq is aimed
at command line users as a way to use OpenPGP conveniently from the
command line.
See the sq user documentation for instructions. The program also has built-in
help, using the --help option and help subcommand:
$ sq help
...
You can also browse the manual pages, look at our acceptance criteria, and browse the rustdoc output if you want to learn about the implementation.
Installing
The sq tool can be installed using cargo:
cargo install sequoia-sq
Please see sequoia-openpgp's README for how to install build dependencies on your system.
Building from source
This crate can be built from a source checkout using the standard
cargo toolchain:
cargo build
The above creates the sq executable, the manual pages, and its shell
completions. By default, the manual pages and shell completions are
put into the cargo target directory, but the exact location is
unpredictable. To write the assets to a predictable location, set the
environment variable ASSET_OUT_DIR to a suitable location.