General refactoring to make blocking operations use special blocking
thread workers, SQL operations to use transactions, and setting up WAL
journal mode mode to minimize locking.
Signed-off-by: Manos Pitsidianakis <manos@pitsidianak.is>
set_err_kind() is a method of the IntoError trait, not an Error method;
it is meant to be used for any error type that can be converted into
Error. Since melib::Error implements Into<melib::Error> tautologically,
this was not a compilation error. Nevertheless, the correct thing to do
is use the type method directly to set ErrorKind.
Signed-off-by: Manos Pitsidianakis <manos@pitsidianak.is>
We inspect errors in the frontend to check for network errors. If the
network error comes from std::io, this would get converted to an Error
with description "timed out", kind OSError, and source the actual
networking error.
This commit converts network std::io::ErrorKinds into appropriate
native ErrorKinds.
Signed-off-by: Manos Pitsidianakis <manos@pitsidianak.is>
This commit adds a Happy Eyeballs [1] implementation taken from the
happy-eyeballs crate, which is in public domain.
While the function lookup_ip[0] iterates through the addresses returned by
A and AAAA records from a DNS lookup, it returns the first one which
always is an IPv4 address, unless there only is an AAAA record.
RFC6555 [1] recommends an algorithm for choosing the fastest address to
connect to, called "Happy Eyeballs". Ꙭ
[0]: melib/src/utils/connections.rs:497
[1]: https://www.rfc-editor.org/rfc/rfc6555Fixes#268
Manos Pitsidianakis
Damian Poddebniak