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GUACAMOLE-2118: Signal end of user input to connection processes. #699

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Merged
mike-jumper merged 1 commit into from
Aug 6, 2026
Merged

GUACAMOLE-2118: Signal end of user input to connection processes. #699

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10 changes: 10 additions & 0 deletions src/guacd/connection.c
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Original file line number Diff line number Diff line change
Expand Up @@ -129,6 +129,16 @@ static void* guacd_connection_write_thread(void* data) {
break;
}

/* Signal end of input to the connection process. Without this, a user
* which vanishes without sending "disconnect" leaves that process blocked
* awaiting input indefinitely, as nothing further will inform it that its
* last user has left. */
if (shutdown(params->fd, SHUT_WR))
guacd_log(GUAC_LOG_ERROR, "Unable to signal end of user input to "
"connection process: %s. That process may remain running but "
"inactive, retaining the memory of its connection until guacd "
"is restarted.", strerror(errno));

return NULL;

}
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