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LibIPC: Make TransportSocket responsible for reading entire messages

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With this change, the responsibility for prepending messages with their
size and ensuring the entire message is received before returning it to
the caller is moved to TransportSocket. This removes the need to
duplicate this logic in both LibIPC and MessagePort.

Another advantage of reducing message granularity at IPC::Transport
layer is that it will make it easier to support alternative transport
implementations (like Mach ports, which unlike Unix domain sockets are
not stream oriented).
This commit is contained in:
Aliaksandr Kalenik 2025-04-07 04:17:36 +02:00 • committed by Alexander Kalenik
commit a371f849e3
Notes: github-actions[bot] 2025-04-07 15:00:45 +00:00
7 changed files with 130 additions and 204 deletions
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16
Libraries/LibWeb/HTML/MessagePort.h
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@ -1,6 +1,7 @@
/*
* Copyright (c) 2021, Andreas Kling <andreas@ladybird.org>
* Copyright (c) 2023, Andrew Kaster <akaster@serenityos.org>
* Copyright (c) 2025, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -79,12 +80,6 @@ private:
ErrorOr<void> send_message_on_transport(SerializedTransferRecord const&);
void read_from_transport();
enum class ParseDecision {
NotEnoughData,
ParseNextMessage,
};
ErrorOr<ParseDecision> parse_message();
// The HTML spec implies(!) that this is MessagePort.[[RemotePort]]
GC::Ptr<MessagePort> m_remote_port;
@ -93,15 +88,6 @@ private:
Optional<IPC::Transport> m_transport;
enum class SocketState : u8 {
Header,
Data,
Error,
} m_socket_state { SocketState::Header };
size_t m_socket_incoming_message_size { 0 };
IPC::UnprocessedFileDescriptors m_unprocessed_fds;
Vector<u8> m_buffered_data;
GC::Ptr<DOM::EventTarget> m_worker_event_target;
};