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beast support per-op cancellation

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- websocket supports cancellation.
 - Iterating test for ws cancellation.
 - Only terminal cancellation is forwarded by default.
 - basic_stream supports cancellation.
 - supported cancellation is documented.
 - http cancellation additions.
 - Added cancellation_slot tests to http, utils and saved_handler.
 - Added post to write.cpp, to avoid SIGSEV in test.
 - Refresher describes cancellation in more detail.
This commit is contained in:
Klemens authored and Klemens Morgenstern committed 2022-10-27 22:56:19 +08:00
1 parent 0bf3d971a0
commit 3ebff60b1a
35 files changed
+1216 -29
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include/boost/beast/websocket/impl/close.hpp
+18 -4
View File
@@ -90,9 +90,15 @@ public:
BOOST_ASIO_HANDLER_LOCATION((
__FILE__, __LINE__,
"websocket::async_close"));
impl.op_close.emplace(std::move(*this));
this->set_allowed_cancellation(net::cancellation_type::all);
impl.op_close.emplace(std::move(*this),
net::cancellation_type::all);
}
// cancel fired before we could do anything.
if (ec == net::error::operation_aborted)
return this->complete(cont, ec);
this->set_allowed_cancellation(net::cancellation_type::terminal);
impl.wr_block.lock(this);
BOOST_ASIO_CORO_YIELD
{
@@ -143,9 +149,17 @@ public:
BOOST_ASIO_HANDLER_LOCATION((
__FILE__, __LINE__,
"websocket::async_close"));
// terminal only, that's the default
impl.op_r_close.emplace(std::move(*this));
}
if (ec == net::error::operation_aborted)
{
// if a cancellation fires here, we do a dirty shutdown
impl.change_status(status::closed);
close_socket(get_lowest_layer(impl.stream()));
return this->complete(cont, ec);
}
impl.rd_block.lock(this);
BOOST_ASIO_CORO_YIELD
{
@@ -185,7 +199,7 @@ public:
beast::detail::bind_continuation(std::move(*this)));
}
impl.rd_buf.commit(bytes_transferred);
if(impl.check_stop_now(ec))
if(impl.check_stop_now(ec)) //< this catches cancellation
goto upcall;
}
if(detail::is_control(impl.rd_fh.op))