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Code/common/Makefile

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+#
+#		MYRYS ROVER COMMON CODE
+#
+
+COPT = -g -Wall -DDEBUG_LEVEL=0
+
+protocol.o:	protocol.c protocol.h Makefile
+	gcc -c $(COPT)  $< -o $@
+ 

Code/common/protocol.c

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+/*
+ * 			     MYRYS ROVER
+ *		   Low level communication protocol
+ * 
+ * new Wed May 27 03:58.27 AM UTC 2026
+ */
+
+#include   <stdio.h>
+#include   <stdlib.h>
+#include   <unistd.h>
+
+#include   "protocol.h"
+
+/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
+/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
+int show_the_version(int code, char *why)
+{
+fprintf(stderr, "$$$$ show version %x on pid %ld\n",
+					0xfde9, (long)getpid());
+fprintf(stderr, "$$$$ number %04X because {%s}\n", code, why);
+
+return 0;
+}
+/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
+
+int send_a_ping(int code, char *texte, int k)
+{
+unsigned int		foo, bar;
+
+fprintf(stderr, "\tpid %ld is sending \"%s\"\n", (long)getpid(), texte);
+foo = 3 + (rand() % 8);
+#if DEBUG_LEVEL
+fprintf(stderr, "+++ in %s, foo is %u\n", __func__, foo);
+#endif
+
+bar = sleep(foo);
+
+return bar;
+}
+
+/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
+/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
+/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */

Code/common/protocol.h

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+/*
+ * 			     MYRYS ROVER
+ *		   Low level communication protocol
+ * 
+ * new Wed May 27 03:51.45 AM UTC 2026
+ */
+
+int show_the_version(int code, char *why);
+
+int send_a_ping(int, char *, int);