diff --git a/tpc/bin/sendoob.cc b/tpc/bin/sendoob.cc
new file mode 100644
index 0000000..320d99a
--- /dev/null
+++ b/tpc/bin/sendoob.cc
@@ -0,0 +1,31 @@
+#include "InetAddress.h"
+#include "Socket.h"
+#include <string.h>
+
+int main(int argc, char* argv[])
+{
+  if (argc < 3)
+  {
+    printf("Usage:\n  %s hostname port\n", argv[0]);
+    return 0;
+  }
+
+  int port = atoi(argv[2]);
+  InetAddress addr(port);
+  const char* hostname = argv[1];
+  if (InetAddress::resolve(hostname, &addr))
+  {
+    Socket sock(Socket::createTCP());
+    if (sock.connect(addr) == 0)
+    {
+      const char* buf = "hello";
+      ssize_t nw = ::send(sock.fd(), buf, strlen(buf), MSG_OOB);
+      printf("sent %zd bytes\n", nw);
+      getchar();
+    }
+    else
+    {
+      perror("connect");
+    }
+  }
+}