Add OpenVPN, TrustTunnel, Sudoku, inbound managers. Fixes

transport/sudoku/multiplex/write_chunks.go

@@ -0,0 +1,19 @@
+package multiplex
+
+import "io"
+
+func writeAllChunks(w io.Writer, chunks ...[]byte) error {
+	for _, chunk := range chunks {
+		for len(chunk) > 0 {
+			n, err := w.Write(chunk)
+			if err != nil {
+				return err
+			}
+			if n == 0 {
+				return io.ErrShortWrite
+			}
+			chunk = chunk[n:]
+		}
+	}
+	return nil
+}