The old implementation slurped the whole artefact into memory, and
did not ensure it remained allocated beyond the first call to write().
The new implementation uses mmap and ensures the mapping lasts until
the file has been delivered
The previous implementation meant that messages could get lost if
both sending and receiving were scheduled to be processed in the
same event loop cycle. This commit separates the two channels
more clearly, while still allowing the close event in the receive
side to cancel the whole pipeline
Part of #49 refactor
Now that capnp/kj provides http and websocket functions, replace
the excellent websocketpp library with the kj functions. This
removes a dependency and allows for more consistent idiomatic
code. Thanks websocketpp, it was great to have you along!
This should enable parts of the refactor described in #49
Caddy (and probably other webservers) add a Content-Type header
when one was not supplied by the application backend. Under Chromium,
the css file is not interpreted if the webserver delivers it with
Content-Type: text/plain, althugh it does work if no Content-Type
header is set. To prevent the frontend proxy from adding the wrong
header, set it correctly in the first place
Read or writes to bad file descriptors threw exceptions, just log
this instead. Also make sure that LaminarClients are removed from
the list of clients when a connection is aggressively dropped, and
add test
Now explicitly closed connections on the client side are
closed with a clean error code. This is motivated by upcoming
work to detect broken websockets and automatically reconnect
reading into a static buffer is a race condition that is only
manifested under load. There's no guarantee the clause in then()
will run before another task overwrites the buffer. Allocating
a local string is the only correct solution
Improve the boundary between RpcImpl and LaminarInterface such
that the Laminar class doesn't require any types from kj/async.h.
The necessary logic moved from Laminar to RpcImpl and the notification
now happens by abstract virtual callback instead of kj::Promise.
Also remove the fairly useless 'wait' RPC call and drop the wrappers
around kj::PromiseFulfillerPair
Oliver Giles