* Patch by Detlev Zundel, 08 Sep 2004:

[u-boot] / tools / ncb.c

diff --git a/tools/ncb.c b/tools/ncb.c
new file mode 100644 (file)
index 0000000..74deebb
--- /dev/null
+++ b/tools/ncb.c
@@ -0,0 +1,36 @@
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <linux/in.h>
+
+int main (int argc, char *argv[])
+{
+       int s, len, o, port = 6666;
+       char buf[512];
+       struct sockaddr_in addr;
+       int addr_len = sizeof addr;
+
+       if (argc > 1)
+               port = atoi (argv[1]);
+
+       s = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);
+
+       o = 1;
+       len = 4;
+       setsockopt (3, SOL_SOCKET, SO_REUSEADDR, &o, len);
+
+       addr.sin_family = AF_INET;
+       addr.sin_port = htons (port);
+       addr.sin_addr.s_addr = INADDR_ANY;      /* receive broadcasts */
+
+       bind (s, (struct sockaddr *) &addr, sizeof addr);
+
+       for (;;) {
+               len = recvfrom (s, buf, sizeof buf, 0, (struct sockaddr *) &addr, &addr_len);
+               if (len < 0)
+                       break;
+               write (1, buf, len);
+       }
+
+       return 0;
+}