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ipc: Handle bitcoin-wallet disconnections

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This fixes an error reported by Antoine Poinsot <darosior@protonmail.com> in
https://github.com/bitcoin-core/libmultiprocess/issues/123 that does not happen
in master, but does happen with https://github.com/bitcoin/bitcoin/pull/10102
applied, where if the child bitcoin-wallet process is killed (either by an
external signal or by Ctrl-C as reported in the issue) the bitcoin-node process
will not shutdown cleanly after that because chain client flush()
calls will fail.

This change fixes the problem by handling ipc::Exception errors thrown during
the flush() calls, and it relies on the fixes to disconnect detection
implemented in https://github.com/bitcoin-core/libmultiprocess/pull/160 to work
effectively.
This commit is contained in:
Ryan Ofsky 2025-04-24 15:20:58 -04:00
parent db845b915f
commit 5b38e62ccb
1 changed files with 9 additions and 3 deletions
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12
src/init.cpp
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@ -33,6 +33,7 @@
#include <interfaces/ipc.h> #include <interfaces/ipc.h>
#include <interfaces/mining.h> #include <interfaces/mining.h>
#include <interfaces/node.h> #include <interfaces/node.h>
#include <ipc/exception.h>
#include <kernel/caches.h> #include <kernel/caches.h>
#include <kernel/context.h> #include <kernel/context.h>
#include <key.h> #include <key.h>
@ -298,8 +299,13 @@ void Shutdown(NodeContext& node)
StopREST(); StopREST();
StopRPC(); StopRPC();
StopHTTPServer(); StopHTTPServer();
for (const auto& client : node.chain_clients) { for (auto& client : node.chain_clients) {
client->flush(); try {
client->flush();
} catch (const ipc::Exception& e) {
LogDebug(BCLog::IPC, "Chain client did not disconnect cleanly: %s", e.what());
client.reset();
}
} }
StopMapPort(); StopMapPort();
@ -374,7 +380,7 @@ void Shutdown(NodeContext& node)
} }
} }
for (const auto& client : node.chain_clients) { for (const auto& client : node.chain_clients) {
client->stop(); if (client) client->stop();
} }
#ifdef ENABLE_ZMQ #ifdef ENABLE_ZMQ