diff --git a/examples/sky/tcprudolph0.c b/examples/sky/tcprudolph0.c
new file mode 100644
index 000000000..1436fb8a4
--- /dev/null
+++ b/examples/sky/tcprudolph0.c
@@ -0,0 +1,287 @@
+/*
+ * Copyright (c) 2005, Swedish Institute of Computer Science
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the Contiki operating system.
+ *
+ * @(#)$Id: tcprudolph0.c,v 1.1 2007/03/23 00:03:25 adamdunkels Exp $
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+#include "contiki.h"
+#include "sys/etimer.h"
+#include "loader/elfloader.h"
+
+#include "net/uip.h"
+
+#include "cfs/cfs.h"
+
+#include "codeprop.h"
+
+#include "rudolph0.h"
+
+#define DEBUG 0
+#if DEBUG
+#include <stdio.h>
+#define PRINTF(...) printf(__VA_ARGS__)
+#else
+#define PRINTF(...)
+#endif
+
+PROCESS(tcp_loader_process, "TCP loader");
+AUTOSTART_PROCESSES(&tcp_loader_process);
+
+static
+struct codeprop_state {
+  u16_t addr;
+  u16_t len;
+  struct pt tcpthread_pt;
+  int fd;
+} s;
+
+static char msg[30 + 10];
+
+static struct rudolph0_conn rudolph0;
+
+/*---------------------------------------------------------------------*/
+static int
+start_program(void)
+{
+  /* Link, load, and start new program. */
+  int ret;
+  s.fd = cfs_open("codeprop.out", CFS_READ);
+  ret = elfloader_load(s.fd);
+  if(ret == ELFLOADER_OK) {
+    sprintf(msg, "ok\n");
+    PRINTF("Ok, starting new program.\n");
+    /* Start processes. */
+    autostart_start(elfloader_autostart_processes);
+  } else {
+    sprintf(msg, "err %d %s", ret, elfloader_unknown);
+    PRINTF("Error: '%s'.\n", msg);
+  }
+  cfs_close(s.fd);
+  return ret;
+}
+/*---------------------------------------------------------------------*/
+static
+PT_THREAD(recv_tcpthread(struct pt *pt))
+{
+  PT_BEGIN(pt);
+
+  /* Read the header. */
+  PT_WAIT_UNTIL(pt, uip_newdata() && uip_datalen() > 0);
+
+  if(uip_datalen() < sizeof(struct codeprop_tcphdr)) {
+    PRINTF(("codeprop: header not found in first tcp segment\n"));
+    uip_abort();
+    goto thread_done;
+  }
+
+  /* Kill old program. */
+  rudolph0_stop(&rudolph0);
+  /*  elfloader_unload();*/
+  
+  s.len = htons(((struct codeprop_tcphdr *)uip_appdata)->len);
+  s.addr = 0;
+  uip_appdata += sizeof(struct codeprop_tcphdr);
+  uip_len -= sizeof(struct codeprop_tcphdr);
+
+  s.fd = cfs_open("codeprop.out", CFS_WRITE);
+  cfs_close(s.fd);
+  /*  xmem_erase(XMEM_ERASE_UNIT_SIZE, EEPROMFS_ADDR_CODEPROP);*/
+
+  /* Read the rest of the data. */
+  do {
+    if(uip_len > 0) {
+      s.fd = cfs_open("codeprop.out", CFS_WRITE + CFS_APPEND);
+      cfs_seek(s.fd, s.addr);
+      /*      xmem_pwrite(uip_appdata, uip_len, EEPROMFS_ADDR_CODEPROP + s.addr);*/
+      cfs_write(s.fd, uip_appdata, uip_len);
+      cfs_close(s.fd);
+      
+      PRINTF("Wrote %d bytes to file\n", uip_len);
+      s.addr += uip_len;
+    }
+    if(s.addr < s.len) {
+      PT_YIELD_UNTIL(pt, uip_newdata());
+    }
+  } while(s.addr < s.len);
+
+
+#if DEBUG
+  {
+    int i, fd, j;
+    printf("Contents of file:\n");
+    fd = cfs_open("codeprop.out", CFS_READ);
+    j = 0;
+    printf("\n0x%04x: ", 0);
+    for(i = 0; i < s.len; ++i) {
+      unsigned char byte;
+      cfs_read(fd, &byte, 1);
+      printf("0x%02x, ", byte);
+      ++j;
+      if(j == 8) {
+	printf("\n0x%04x: ", i + 1);
+	j = 0;
+      }
+      clock_delay(400);
+    }
+    cfs_close(fd);
+  }
+#endif
+
+  int ret;
+  
+  ret = start_program();
+  
+#if NETSIM
+  rudolph0_send(&rudolph0);
+#else /* NETSIM */
+  if(ret == ELFLOADER_OK) {
+    /* Propagate program. */
+    rudolph0_send(&rudolph0);
+  }
+#endif /* NETSIM */
+  
+  /* Return "ok" message. */
+  do {
+    ret = strlen(msg);
+    uip_send(msg, ret);
+    PT_WAIT_UNTIL(pt, uip_acked() || uip_rexmit() || uip_closed());
+  } while(uip_rexmit());
+
+  /* Close the connection. */
+  uip_close();
+
+    
+ thread_done:;
+  PT_END(pt);
+}
+/*---------------------------------------------------------------------*/
+static void
+write_chunk(struct rudolph0_conn *c, int offset, int flag,
+	    char *data, int datalen)
+{
+  int fd;
+  
+  if(flag == RUDOLPH0_FLAG_NEWFILE) {
+    printf("+++ rudolph0 new file incoming at %lu\n", clock_time());
+    fd = cfs_open("codeprop.out", CFS_WRITE);
+    
+    if(elfloader_autostart_processes != NULL) {
+      PRINTF("Stopping old programs.\n");
+      autostart_exit(elfloader_autostart_processes);
+    }
+
+  } else {
+    fd = cfs_open("codeprop.out", CFS_WRITE + CFS_APPEND);
+  }
+  
+  if(datalen > 0) {
+    int ret;
+    cfs_seek(fd, offset);
+    ret = cfs_write(fd, data, datalen);
+    /*    printf("write_chunk wrote %d bytes at %d, %d\n", ret, offset, (unsigned char)data[0]);*/
+  }
+
+  cfs_close(fd);
+
+  if(flag == RUDOLPH0_FLAG_LASTCHUNK) {
+    printf("+++ rudolph0 entire file received at %lu\n", clock_time());
+    start_program();
+  }
+}
+static int
+read_chunk(struct rudolph0_conn *c, int offset, char *to, int maxsize)
+{
+  int fd;
+  int ret;
+  
+  fd = cfs_open("hej", CFS_READ);
+
+  cfs_seek(fd, offset);
+  ret = cfs_read(fd, to, maxsize);
+  /*  printf("read_chunk %d bytes at %d, %d\n", ret, offset, (unsigned char)to[0]);*/
+  cfs_close(fd);
+  return ret;
+}
+const static struct rudolph0_callbacks rudolph0_call = {write_chunk,
+							read_chunk};
+/*---------------------------------------------------------------------*/
+PROCESS_THREAD(tcp_loader_process, ev, data)
+{
+  PROCESS_BEGIN();
+
+  rudolph0_open(&rudolph0, 20, &rudolph0_call);
+  
+  tcp_listen(HTONS(CODEPROP_DATA_PORT));
+  
+  while(1) {
+    PROCESS_YIELD();
+    if(ev == tcpip_event && uip_conn->lport == HTONS(CODEPROP_DATA_PORT)) {
+      if(uip_connected()) {	/* Really uip_connecting()!!! */
+	if(data == NULL) {
+	  PT_INIT(&s.tcpthread_pt);
+	  process_poll(&tcp_loader_process);
+	  tcp_markconn(uip_conn, &s);
+
+	  if(elfloader_autostart_processes != NULL) {
+	    PRINTF("Stopping old programs.\n");
+	    autostart_exit(elfloader_autostart_processes);
+	  }
+	} else {
+	  PRINTF(("codeprop: uip_connected() and data != NULL\n"));
+	  uip_abort();
+	}
+      }
+      recv_tcpthread(&s.tcpthread_pt); /* Run thread */
+
+      if(uip_closed() || uip_aborted() || uip_timedout()) {
+	PRINTF(("codeprop: connection down\n"));
+	tcp_markconn(uip_conn, NULL);
+      }
+    }
+  }
+  
+  PROCESS_END();
+}
+/*---------------------------------------------------------------------*/
+#include "net/rime/tree.h"
+#include "net/rime/mesh.h"
+void
+dummy(void)
+{
+  tree_close(NULL);
+  mesh_close(NULL);
+  uibc_close(NULL);
+  uabc_close(NULL);
+  ruc_close(NULL);
+}
+/*---------------------------------------------------------------------*/