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ee0b81848f
The nghttp2_asio library was formerly part of nghttp2 but by now is distributed as separate library.
46 lines
1.5 KiB
Diff
46 lines
1.5 KiB
Diff
From b4745aa3d87916c7d3da33c00da400b22a0539b5 Mon Sep 17 00:00:00 2001
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From: m8mble <m8mble@vivaldi.net>
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Date: Fri, 20 Jan 2023 16:36:30 +0100
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Subject: [PATCH 1/1] Fix exception in server
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It can happen that a connection handler calls writefun when the
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connection is already destroyed. This causes bad_weak_ptr exceptions
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thrown from the server.
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Fix this issue by skipping the respective do_write invocations.
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Signed-off-by: m8mble <m8mble@vivaldi.net>
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---
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lib/asio_server_connection.h | 13 ++++++++++++-
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1 file changed, 12 insertions(+), 1 deletion(-)
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diff --git a/lib/asio_server_connection.h b/lib/asio_server_connection.h
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index a948965..94ed59f 100644
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--- a/lib/asio_server_connection.h
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+++ b/lib/asio_server_connection.h
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@@ -88,9 +88,20 @@ public:
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void start() {
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boost::system::error_code ec;
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+ auto make_writefun = [original_self = this->shared_from_this()] {
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+ return [weak = std::weak_ptr<connection>{original_self}]() {
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+ auto self = weak.lock();
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+ // If connection already got destroyed, the socket is already closed in particular.
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+ // Therefore we can simply ignore further calls to write.
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+ if (self) {
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+ self->do_write();
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+ }
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+ };
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+ };
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+
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handler_ = std::make_shared<http2_handler>(
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GET_IO_SERVICE(socket_), socket_.lowest_layer().remote_endpoint(ec),
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- [this]() { do_write(); }, mux_);
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+ make_writefun(), mux_);
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if (handler_->start() != 0) {
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stop();
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return;
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--
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2.39.1
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