LibIPC: Short-cirtcuit post_message() if socket already disconnected

To allow for more asynchronous teardown of IClientConnection, make the
post_message() function simply return if called after the IPC socket
has been closed.

1 files changed, 5 insertions, 0 deletions

diff --git a/Libraries/LibIPC/IClientConnection.h b/Libraries/LibIPC/IClientConnection.h
index 89570fd6ae..e20219cbbb 100644
--- a/Libraries/LibIPC/IClientConnection.h
+++ b/Libraries/LibIPC/IClientConnection.h
@@ -98,6 +98,11 @@ public:
 
     void post_message(const IMessage& message)
     {
+        // NOTE: If this connection is being shut down, but has not yet been destroyed,
+        //       the socket will be closed. Don't try to send more messages.
+        if (!m_socket->is_open())
+            return;
+
         auto buffer = message.encode();
 
         int nwritten = write(m_socket->fd(), buffer.data(), (size_t)buffer.size());