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--- a/src/queue.c +++ b/src/queue.c @@ -8,6 +8,7 @@ #include "../include/queue.h" #include <errno.h> #include <time.h> +#include <unistd.h> /* sleep() */ #define RETRY_LOG_INTERVAL 600 /* Seconds */ #define MAX_RETRIES 20 /* Max number of times to retry sending message */