* Head off imminent breakage due to https://github.com/rust-lang/rust/pull/51285.
* Fix examples and documentation to use a recently-gated feature, `proc_macro_path_invoc`.
* Update dependency versions.
* Create a directory for the `future::server` module, which has become quite large. server.rs => server/mod.rs. Server submodules for shutdown and connection logic are added.
* Add fn thread_pool(...) to sync::server::Options
* Configure idle threads to expire after one minute
* Add tarpc::util::lazy for lazily executing functions. Similar to `futures::lazy` but useful in different circumstances. Specifically, `futures::lazy` typically requires a closure, whereas `util::lazy` kind of deconstructs a closure into its function and args.
* Remove some unstable features, and `cfg(plugin)` only in tests. Features `unboxed_closures` and `fn_traits` are removed by replacing manual Fn impls with Stream impls. This actually leads to slightly more performant code, as well, because some `Rc`s could be removed.
* Fix tokio deprecation warnings. Update to use tokio-io in lieu of deprecated tokio-core items. impl AsyncRead's optional `unsafe fn prepare_uninitialized_buffer` for huge perf wins
* Add debug impls to all public items and add `deny(missing_debug_implementations)` to the crate.
* Bump tokio core version.
Unfortunately, cargo's semantic versioning gets confused by the
"-alpha" suffix in current bincode versions (I think): even though
tarpc's Cargo.toml specified version "1.0.0-alpha4", cargo will
download the more recent "1.0.0-alpha6", which has breaking changes
to the `SizeLimit` enum.
This change makes tarpc work with bincode 1.0.0-alpha6 and updates the
dependency.
* Make a reactor handle mandatory for server.
This removes the Send bound from FutureService. The Send bound
is still required for SyncService, since clones are sent to
new threads for each request. (This is more fodder for the argument
that there should be a distinct Options struct for each combination of
async/sync and client/server.)
This commit also makes FutureService::listen return an io::Result
rather than a Future; the future was never really necessary and
had the unintended consequence of making SyncService::listen
deadlock when the options specified a handle (because that means
the reactor driving the service lives on the same thread that
SyncService is waiting on).
`SyncClient` is no longer `Clone` because it needs to create
a new `reactor::Core` when cloning. Tokio Clients are `Clone` but
they don't allow moving the cloned client onto a new reactor.
* Change pubsub to use Rc<Refcell<>> instead of Arc<Mutex<>>.
This is possible since services no longer need to be Send.
* Remove some unnecessary unstable features.
There 3 remaining unstable features. The hardest to remove is plugin, because
we rely on compiler plugins to rewrite types from snake case to camel. It's
possible this can be removed before the proc macros rewrite lands if
impl Trait is extended to work with traits.
* Clean up example
* Sync servers now spawn a reactor on a thread. It's decided that
sync users should not have to know about tokio at all.
* Don't allow specifying a reactor::Core on client options.
* Fail fast in server::listen if local_addr() returns Err.
