connect failure scenarios

src/control.h

@@ -1,5 +1,28 @@
-#ifndef __CONTROL_H
-#define __CONTROL_H
+#ifndef CONTROL_H
+#define CONTROL_H
+
+/* MS_CONNECT_TIME_SECS
+ * The length of time after which the sender will assume a connect() to
+ * the destination has failed.
+ */
+#define MS_CONNECT_TIME_SECS 60
+
+/* MS_HELLO_TIME_SECS
+ * The length of time the sender will wait for the NBD hello message
+ * after connect() before aborting the connection attempt.
+ */
+#define MS_HELLO_TIME_SECS 5
+
+
+/* MS_RETRY_DELAY_SECS
+ * The delay after a failed migration attempt before launching another
+ * thread to try again.
+ */
+#define MS_RETRY_DELAY_SECS 1
+
+
+#include "parse.h"
+#include "serve.h"
 
 void accept_control_connection(struct server* params, int client_fd, union mysockaddr* client_address);
 void serve_open_control_socket(struct server* params);