vcpkg/ports/nghttp2-asio/0001-Fix-exception-in-server.patch
m8mble ee0b81848f
Add nghttp2-asio port (#29714)
The nghttp2_asio library was formerly part of nghttp2 but by now
is distributed as separate library.
2023-03-06 15:54:04 -08:00

46 lines
1.5 KiB
Diff

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