1 files changed, 36 insertions, 0 deletions
diff --git a/draft/mcastseed/src/random_speed_dd.c b/draft/mcastseed/src/random_speed_dd.c
new file mode 100644
index 0000000..4d94bc0
--- /dev/null
+++ b/draft/mcastseed/src/random_speed_dd.c
@@ -0,0 +1,36 @@
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+
+char buf[0xffff];
+
+int main() {
+	ssize_t nread, nwrite, remains;
+
+	srandom(1); /* Always the same pseudo-random sequence */
+
+	while ( (nread=read(0, buf, 0xfff & rand())) > 0 ) {
+		remains = nread;
+		while ( remains ) {
+			nwrite=write(1, buf, nread);
+			if ( nwrite < 0 )  {
+				if ( !(errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR) ) {
+					perror("write");
+					return nwrite;
+				}
+			} else {
+				remains -= nwrite;
+			}
+		}
+		/*fprintf(stderr, "nread==%zu, nwrite==%zu\n", nread, nwrite);*/
+		usleep( 0xffff & rand() );
+	}
+	if ( nread < 0 ) {
+		perror("read");
+		return nread;
+	}
+
+	return 0;
+}
+