diff --git a/common/os_calls.c b/common/os_calls.c
index 5db47447..a5b88594 100644
--- a/common/os_calls.c
+++ b/common/os_calls.c
@@ -2086,3 +2086,19 @@ g_time2(void)
   return (int)(num_ticks * 10);
 #endif
 }
+
+/*****************************************************************************/
+/* returns time in milliseconds, uses gettimeofday
+   does not work in win32 */
+int APP_CC
+g_time3(void)
+{
+#if defined(_WIN32)
+  return 0;
+#else
+  struct timeval tp;
+
+  gettimeofday(&tp, 0);
+  return (tp.tv_sec * 1000) + (tp.tv_usec / 1000);
+#endif
+}
diff --git a/common/os_calls.h b/common/os_calls.h
index bc4f26f8..4c727f66 100644
--- a/common/os_calls.h
+++ b/common/os_calls.h
@@ -243,5 +243,7 @@ int APP_CC
 g_time1(void);
 int APP_CC
 g_time2(void);
+int APP_CC
+g_time3(void);
 
 #endif
diff --git a/mc/mc.c b/mc/mc.c
index fc0e9e18..106fa3fe 100644
--- a/mc/mc.c
+++ b/mc/mc.c
@@ -90,6 +90,7 @@ mod_init(void)
 
   mod = (struct mod*)g_malloc(sizeof(struct mod), 1);
   mod->size = sizeof(struct mod);
+  mod->version = CURRENT_MOD_VER;
   mod->handle = (long)mod;
   mod->mod_connect = lib_mod_connect;
   mod->mod_start = lib_mod_start;
diff --git a/mc/mc.h b/mc/mc.h
index b825eadc..949166f0 100644
--- a/mc/mc.h
+++ b/mc/mc.h
@@ -26,6 +26,8 @@
 #include "os_calls.h"
 #include "defines.h"
 
+#define CURRENT_MOD_VER 1
+
 struct mod
 {
   int size; /* size of this struct */
@@ -78,7 +80,8 @@ struct mod
                               int* channel_flags);
   int (*server_get_channel_id)(struct mod* v, char* name);
   int (*server_send_to_channel)(struct mod* v, int channel_id,
-                                char* data, int data_len);
+                                char* data, int data_len,
+                                int total_data_len, int flags);
   long server_dumby[100 - 24]; /* align, 100 minus the number of server
                                   functions above */
   /* common */
diff --git a/rdp/rdp.c b/rdp/rdp.c
index c66e88ad..b03c6740 100644
--- a/rdp/rdp.c
+++ b/rdp/rdp.c
@@ -307,6 +307,7 @@ mod_init(void)
   DEBUG(("in mod_init"));
   mod = (struct mod*)g_malloc(sizeof(struct mod), 1);
   mod->size = sizeof(struct mod);
+  mod->version = CURRENT_MOD_VER;
   mod->handle = (long)mod;
   mod->mod_connect = lib_mod_connect;
   mod->mod_start = lib_mod_start;
diff --git a/rdp/rdp.h b/rdp/rdp.h
index 9f78c5cb..37e430cb 100644
--- a/rdp/rdp.h
+++ b/rdp/rdp.h
@@ -251,6 +251,8 @@ struct rdp_orders
   struct rdp_bitmap* cache_bitmap[3][600];
 };
 
+#define CURRENT_MOD_VER 1
+
 struct mod
 {
   int size; /* size of this struct */
@@ -307,7 +309,8 @@ struct mod
                               int* channel_flags);
   int (*server_get_channel_id)(struct mod* v, char* name);
   int (*server_send_to_channel)(struct mod* v, int channel_id,
-                                char* data, int data_len);
+                                char* data, int data_len,
+                                int total_data_len, int flags);
   long server_dumby[100 - 24]; /* align, 100 minus the number of server 
                                   functions above */
   /* common */
diff --git a/vnc/vnc.c b/vnc/vnc.c
index 3e67b9fd..fefedd6c 100644
--- a/vnc/vnc.c
+++ b/vnc/vnc.c
@@ -125,7 +125,8 @@ lib_send(struct vnc* v, char* data, int len)
 
 /******************************************************************************/
 static int DEFAULT_CC
-lib_process_channel_data(struct vnc* v, int chanid, int size, struct stream* s)
+lib_process_channel_data(struct vnc* v, int chanid, int flags, int size,
+                         struct stream* s, int total_size)
 {
   int type;
   int status;
@@ -152,7 +153,7 @@ lib_process_channel_data(struct vnc* v, int chanid, int size, struct stream* s)
         out_uint8s(out_s, 4); /* pad */
         s_mark_end(out_s);
         length = (int)(out_s->end - out_s->data);
-        v->server_send_to_channel(v, v->clip_chanid, out_s->data, length);
+        v->server_send_to_channel(v, v->clip_chanid, out_s->data, length, length, 3);
         free_stream(out_s);
         break;
       case 3: /* CLIPRDR_FORMAT_ACK */
@@ -194,11 +195,17 @@ lib_process_channel_data(struct vnc* v, int chanid, int size, struct stream* s)
         out_uint8s(out_s, 4); /* pad */
         s_mark_end(out_s);
         length = (int)(out_s->end - out_s->data);
-        v->server_send_to_channel(v, v->clip_chanid, out_s->data, length);
+        v->server_send_to_channel(v, v->clip_chanid, out_s->data, length,
+                                  length, 3);
         free_stream(out_s);
         break;
     }
   }
+  else
+  {
+    g_writeln("lib_process_channel_data: unknown chanid %d v->clip_chanid %d",
+              chanid, v->clip_chanid);
+  }
   return 0;
 }
 
@@ -215,7 +222,9 @@ lib_mod_event(struct vnc* v, int msg, long param1, long param2,
   int cx;
   int cy;
   int size;
+  int total_size;
   int chanid;
+  int flags;
   char* data;
   char text[256];
 
@@ -223,16 +232,18 @@ lib_mod_event(struct vnc* v, int msg, long param1, long param2,
   make_stream(s);
   if (msg == 0x5555) /* channel data */
   {
-    chanid = (int)param1;
+    chanid = LOWORD(param1);
+    flags = HIWORD(param1);
     size = (int)param2;
     data = (char*)param3;
+    total_size = (int)param4;
     if ((size >= 0) && (size <= (32 * 1024)) && (data != 0))
     {
       init_stream(s, size);
       out_uint8a(s, data, size);
       s_mark_end(s);
       s->p = s->data;
-      error = lib_process_channel_data(v, chanid, size, s);
+      error = lib_process_channel_data(v, chanid, flags, size, s, total_size);
     }
     else
     {
@@ -663,7 +674,7 @@ lib_clip_data(struct vnc* v)
     out_uint8s(out_s, 4);
     s_mark_end(out_s);
     size = (int)(out_s->end - out_s->data);
-    error = v->server_send_to_channel(v, v->clip_chanid, out_s->data, size);
+    error = v->server_send_to_channel(v, v->clip_chanid, out_s->data, size, size, 3);
     free_stream(out_s);
   }
   free_stream(s);
@@ -741,6 +752,7 @@ lib_mod_signal(struct vnc* v)
     }
     else if (type == 3) /* clipboard */
     {
+      g_writeln("got clip data");
       error = lib_clip_data(v);
     }
     else
@@ -775,7 +787,7 @@ lib_open_clip_channel(struct vnc* v)
   v->clip_chanid = v->server_get_channel_id(v, "cliprdr");
   if (v->clip_chanid >= 0)
   {
-    v->server_send_to_channel(v, v->clip_chanid, init_data, 12);
+    v->server_send_to_channel(v, v->clip_chanid, init_data, 12, 12, 3);
   }
   return 0;
 }
@@ -1163,6 +1175,7 @@ mod_init(void)
   v = (struct vnc*)g_malloc(sizeof(struct vnc), 1);
   /* set client functions */
   v->size = sizeof(struct vnc);
+  v->version = CURRENT_MOD_VER;
   v->handle = (long)v;
   v->mod_connect = lib_mod_connect;
   v->mod_start = lib_mod_start;
diff --git a/vnc/vnc.h b/vnc/vnc.h
index fe143fb3..e298930e 100644
--- a/vnc/vnc.h
+++ b/vnc/vnc.h
@@ -25,6 +25,9 @@
 #include "parse.h"
 #include "os_calls.h"
 #include "d3des.h"
+#include "defines.h"
+
+#define CURRENT_MOD_VER 1
 
 struct vnc
 {
@@ -82,7 +85,8 @@ struct vnc
                               int* channel_flags);
   int (*server_get_channel_id)(struct vnc* v, char* name);
   int (*server_send_to_channel)(struct vnc* v, int channel_id,
-                                char* data, int data_len);
+                                char* data, int data_len,
+                                int total_data_len, int flags);
   long server_dumby[100 - 24]; /* align, 100 minus the number of server
                                   functions above */
   /* common */
diff --git a/xrdp/xrdp_mm.c b/xrdp/xrdp_mm.c
index 56b868a8..e6c4e4d2 100644
--- a/xrdp/xrdp_mm.c
+++ b/xrdp/xrdp_mm.c
@@ -357,6 +357,11 @@ xrdp_mm_setup_mod1(struct xrdp_mm* self)
       if ((self->mod_init != 0) && (self->mod_exit != 0))
       {
         self->mod = self->mod_init();
+        if (self->mod != 0)
+        {
+          g_writeln("loaded modual '%s' ok, interface size %d, version %d", lib,
+                    self->mod->size, self->mod->version);
+        }
       }
     }
     else
@@ -1001,7 +1006,6 @@ xrdp_mm_process_channel_data(struct xrdp_mm* self, tbus param1, tbus param2,
   int id;
   char* data;
 
-  g_writeln("in xrdp_mm_process_channel_data %d %d %d %d", param1, param2, param3, param4);
   rv = 0;
   if ((self->chan_trans != 0) && self->chan_trans_up)
   {
diff --git a/xrdp/xrdp_wm.c b/xrdp/xrdp_wm.c
index 8a11785c..e532e2ab 100644
--- a/xrdp/xrdp_wm.c
+++ b/xrdp/xrdp_wm.c
@@ -1263,9 +1263,14 @@ xrdp_wm_process_input_mouse(struct xrdp_wm* self, int device_flags,
 }
 
 /******************************************************************************/
+/* param1 = MAKELONG(channel_id, flags)
+   param2 = size
+   param3 = pointer to data
+   param4 = total size */
 static int APP_CC
 xrdp_wm_process_channel_data(struct xrdp_wm* self,
-                            tbus param1, tbus param2, tbus param3, tbus param4)
+                            tbus param1, tbus param2,
+                            tbus param3, tbus param4)
 {
   int rv;
 
diff --git a/xup/xup.c b/xup/xup.c
index acebc4f8..20174365 100644
--- a/xup/xup.c
+++ b/xup/xup.c
@@ -448,6 +448,7 @@ mod_init(void)
 
   mod = (struct mod*)g_malloc(sizeof(struct mod), 1);
   mod->size = sizeof(struct mod);
+  mod->version = CURRENT_MOD_VER;
   mod->handle = (tbus)mod;
   mod->mod_connect = lib_mod_connect;
   mod->mod_start = lib_mod_start;
diff --git a/xup/xup.h b/xup/xup.h
index 96e56946..e53a6607 100644
--- a/xup/xup.h
+++ b/xup/xup.h
@@ -26,6 +26,8 @@
 #include "os_calls.h"
 #include "defines.h"
 
+#define CURRENT_MOD_VER 1
+
 struct mod
 {
   int size; /* size of this struct */
@@ -82,7 +84,8 @@ struct mod
                               int* channel_flags);
   int (*server_get_channel_id)(struct mod* v, char* name);
   int (*server_send_to_channel)(struct mod* v, int channel_id,
-                                char* data, int data_len);
+                                char* data, int data_len,
+                                int total_data_len, int flags);
   tbus server_dumby[100 - 24]; /* align, 100 minus the number of server
                                   functions above */
   /* common */