Add simple network test

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@358 42af7a65-404d-4744-a932-0658087f49c3

6 files changed, 672 insertions, 0 deletions

diff --git a/nuttx/examples/nettest/Makefile b/nuttx/examples/nettest/Makefile
new file mode 100644
index 000000000..185b5b669
--- /dev/null
+++ b/nuttx/examples/nettest/Makefile
@@ -0,0 +1,105 @@
+############################################################
+# Makefile
+#
+#   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# 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 Gregory Nutt 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 COPYRIGHT HOLDERS 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
+# COPYRIGHT OWNER 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.
+#
+############################################################
+
+-include $(TOPDIR)/.config
+-include $(TOPDIR)/Make.defs
+
+MKDEP		= $(TOPDIR)/tools/mkdeps.sh
+
+TARG_ASRCS	= 
+TARG_AOBJS	= $(TARG_ASRCS:.S=$(OBJEXT))
+
+TARG_CSRCS	= nettest.c
+ifeq ($(CONFIG_NETTEST_SERVER),y)
+TARG_CSRCS	+= nettest-server.c
+else
+TARG_CSRCS	+= nettest-client.c
+endif
+
+TARG_COBJS	= $(TARG_CSRCS:.c=$(OBJEXT))
+
+TARG_SRCS	= $(TARG_ASRCS) $(TARG_CSRCS)
+TARG_OBJS	= $(TARG_AOBJS) $(TARG_COBJS)
+
+TARG_BIN	= lib$(CONFIG_EXAMPLE)$(LIBEXT)
+
+HOSTCFLAGS	+= -DCONFIG_NETTEST_HOST=1
+ifeq ($(CONFIG_NETTEST_SERVER),y)
+HOSTCFLAGS	+= -DCONFIG_NETTEST_SERVER=1
+endif
+
+HOST_SRCS	= host.c
+ifeq ($(CONFIG_NETTEST_SERVER),y)
+HOST_SRCS	+= nettest-client.c
+else
+HOST_SRCS	+= nettest-server.c
+endif
+
+HOST_OBJS	= $(HOST_SRCS:.c=.o)
+HOST_BIN	= host
+
+all:	$(TARG_BIN)
+
+$(TARG_AOBJS): %$(OBJEXT): %.S
+	$(CC) -c $(CFLAGS) $< -o $@
+
+$(TARG_COBJS): %$(OBJEXT): %.c
+	$(CC) -c $(CFLAGS) $< -o $@
+
+$(TARG_BIN):	$(TARG_OBJS) $(HOST_BIN)
+	( for obj in $(TARG_OBJS) ; do \
+		$(AR) $@ $${obj} || \
+			{ echo "$(AR) $@ $obj FAILED!" ; exit 1 ; } ; \
+	done ; )
+
+$(HOST_OBJS): %.o: %.c
+	$(HOSTCC) -c $(HOSTCFLAGS) $< -o $@
+
+$(HOST_BIN):	$(HOST_OBJS)
+	$(HOSTCC) $(HOSTLDFLAGS) $(HOST_OBJS) -o $@
+
+.depend: Makefile $(TARG_SRCS)
+	$(MKDEP) $(CC) -- $(CFLAGS) -- $(TARG_SRCS) >Make.dep
+	touch $@
+
+depend: .depend
+
+clean:
+	rm -f $(TARG_BIN) $(HOST_BIN) *.o *.rel *.asm *.lst *.sym *.adb *~
+
+distclean: clean
+	rm -f Make.dep .depend
+
+-include Make.dep
diff --git a/nuttx/examples/nettest/host.c b/nuttx/examples/nettest/host.c
new file mode 100644
index 000000000..0d59b1abf
--- /dev/null
+++ b/nuttx/examples/nettest/host.c
@@ -0,0 +1,63 @@
+/****************************************************************************
+ * examples/nettest/host.c
+ *
+ *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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 Gregory Nutt 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 COPYRIGHT HOLDERS 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
+ * COPYRIGHT OWNER 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include "nettest.h"
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * main
+ ****************************************************************************/
+
+int main(int argc, char **argv, char **envp)
+{
+#ifdef CONFIG_NETTEST_SERVER
+  send_client();
+#else
+  recv_server();
+#endif
+
+  return 0;
+}
diff --git a/nuttx/examples/nettest/nettest-client.c b/nuttx/examples/nettest/nettest-client.c
new file mode 100644
index 000000000..38f98875e
--- /dev/null
+++ b/nuttx/examples/nettest/nettest-client.c
@@ -0,0 +1,174 @@
+/****************************************************************************
+ * examples/nettest/nettestn-client.c
+ *
+ *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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 Gregory Nutt 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 COPYRIGHT HOLDERS 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
+ * COPYRIGHT OWNER 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+
+#include "nettest.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+void send_client(void)
+{
+  struct sockaddr_in myaddr;
+  char outbuf[SENDSIZE];
+#ifndef CONFIG_NETTEST_PERFORMANCE
+  char inbuf[SENDSIZE];
+#endif
+  int sockfd;
+  int nbytessent;
+#ifndef CONFIG_NETTEST_PERFORMANCE
+  int nbytesrecvd;
+#endif
+  int ch;
+  int i;
+
+  /* Create a new TCP socket */
+
+  sockfd = socket(PF_INET, SOCK_STREAM, 0);
+  if (sockfd < 0)
+    {
+      printf("client socket failure %d\n", errno);
+      exit(1);
+    }
+
+  /* Connect the socket to the server */
+
+  myaddr.sin_family      = AF_INET;
+  myaddr.sin_port        = HTONS(PORTNO);
+#if 0
+  myaddr.sin_addr.s_addr = HTONL(INADDR_LOOPBACK);
+#else
+  myaddr.sin_addr.s_addr = HTONL(192 << 24 | 168 << 16 | 0 << 8 |106);
+#endif
+
+  printf("client: Connecting...\n");
+  if (connect( sockfd, (struct sockaddr*)&myaddr, sizeof(struct sockaddr_in)) < 0)
+    {
+      printf("client: connect failure: %d\n", errno);
+      exit(1);
+    }
+  printf("clilent: Connected\n");
+
+  /* Initialize the buffer */
+
+  ch = 0x20;
+  for (i = 0; i < SENDSIZE; i++ )
+    {
+      outbuf[i] = ch;
+      if (++ch > 0x7e)
+        {
+          ch = 0x20;
+        }
+    }
+
+#ifdef CONFIG_NETTEST_PERFORMANCE
+  /* Then receive messages forever */
+
+  for (;;)
+    {
+      nbytessent = send(sockfd, outbuf, 512, 0);
+      if (nbytessent < 0)
+        {
+          printf("client: send failed: %d\n", errno);
+          close(sockfd);
+          exit(-1);
+        }
+      else if (nbytessent != 512)
+        {
+          printf("client: Bad send length=%d: %d\n", nbytessent);
+          close(sockfd);
+          exit(-1);
+        }
+    }
+#else
+  /* Then send and receive one message */
+
+  printf("client: Sending %d bytes\n", SENDSIZE);
+  nbytessent = send(sockfd, outbuf, SENDSIZE, 0);
+  printf("client: Sent %d bytes\n", nbytessent);
+
+  if (nbytessent < 0)
+    {
+      printf("client: send failed: %d\n", errno);
+      close(sockfd);
+      exit(-1);
+    }
+  else if (nbytessent != SENDSIZE)
+    {
+      printf("client: Bad send length=%d: %d\n", nbytessent);
+      close(sockfd);
+      exit(-1);
+    }
+
+  printf("client: Receiving...\n");
+  nbytesrecvd = recv(sockfd, inbuf, SENDSIZE, 0);
+  printf("client: Received %d bytes\n", nbytesrecvd);
+
+  if (nbytesrecvd < 0)
+    {
+      printf("client: recv failed: %d\n", errno);
+      close(sockfd);
+      exit(-1);
+    }
+  else if (nbytesrecvd != SENDSIZE)
+    {
+      printf("client: Bad recv length=%d: %d\n", nbytessent);
+      close(sockfd);
+      exit(-1);
+    }
+  else if (memcmp(inbuf, outbuf, SENDSIZE) != 0)
+    {
+      printf("client: Received buffer does not match sent buffer\n");
+      close(sockfd);
+      exit(-1);
+    }
+
+  close(sockfd);
+#endif
+}
diff --git a/nuttx/examples/nettest/nettest-server.c b/nuttx/examples/nettest/nettest-server.c
new file mode 100644
index 000000000..5ad4a0b01
--- /dev/null
+++ b/nuttx/examples/nettest/nettest-server.c
@@ -0,0 +1,158 @@
+/****************************************************************************
+ * examples/nettest/nettest.c
+ *
+ *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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 Gregory Nutt 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 COPYRIGHT HOLDERS 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
+ * COPYRIGHT OWNER 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include "nettest.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+void recv_server(void)
+{
+  struct sockaddr_in myaddr;
+  char buffer[1024];
+  int listensd;
+  int acceptsd;
+  socklen_t addrlen;
+  int nbytesread;
+#ifndef CONFIG_NETTEST_PERFORMANCE
+  int nbytessent;
+#endif
+  int optval;
+
+  /* Create a new TCP socket */
+
+  listensd = socket(PF_INET, SOCK_STREAM, 0);
+  if (listensd < 0)
+    {
+      printf("server: socket failure: %d\n", errno);
+      exit(1);
+    }
+
+  /* Set socket to reuse address */
+
+  optval = 1;
+  if (setsockopt(listensd, SOL_SOCKET, SO_REUSEADDR, (void*)&optval, sizeof(int)) < 0)
+    {
+      printf("server: setsockopt failure: %d\n", errno);
+      exit(1);
+    }
+
+  /* Bind the TCP socket to a local address */
+
+  myaddr.sin_family      = AF_INET;
+  myaddr.sin_port        = HTONS(PORTNO);
+  myaddr.sin_addr.s_addr = INADDR_ANY;
+
+  if (bind(listensd, (struct sockaddr*)&myaddr, sizeof(struct sockaddr_in)) < 0)
+    {
+      printf("server: bind failure: %d\n", errno);
+      exit(1);
+    }
+
+  /* Listen for connections on the bound TCP socket */
+
+  if (listen(listensd, 5) < 0)
+    {
+      printf("server: listen failure %d\n", errno);
+      exit(1);
+    }
+
+  /* Accept only one connection */
+
+  printf("server: Accepting connections on port %d\n", PORTNO);
+  addrlen = sizeof(struct sockaddr_in);
+  acceptsd = accept(listensd, (struct sockaddr*)&myaddr, &addrlen);
+  if (acceptsd < 0)
+    {
+      printf("server: accept failure: %d\n", errno);
+      exit(1);
+    }
+  printf("server: Connection accepted -- receiving\n");
+
+#ifdef CONFIG_NETTEST_PERFORMANCE
+  /* Then receive data forever */
+
+  for (;;)
+    {
+      nbytesread = recv(acceptsd, buffer, 1024, 0);
+      if (nbytesread <= 0)
+        {
+          printf("server: recv failed: %d\n", errno);
+          close(listensd);
+          close(acceptsd);
+          exit(-1);
+        }
+    }
+#else
+  /* Receive and echo own message */
+
+  nbytesread = recv(acceptsd, buffer, 1024, 0);
+  if (nbytesread <= 0)
+    {
+      printf("server: recv failed: %d\n", errno);
+      close(listensd);
+      close(acceptsd);
+      exit(-1);
+    }
+  printf("server: Received %d bytes\n", nbytesread);
+
+  nbytessent = send(acceptsd, buffer, nbytesread, 0);
+  if (nbytessent <= 0)
+    {
+      printf("server: send failed: %d\n", errno);
+      close(listensd);
+      close(acceptsd);
+      exit(-1);
+    }
+  printf("server: Sent %d bytes\n", nbytessent);
+
+  close(listensd);
+  close(acceptsd);
+#endif
+}
diff --git a/nuttx/examples/nettest/nettest.c b/nuttx/examples/nettest/nettest.c
new file mode 100644
index 000000000..443b555b3
--- /dev/null
+++ b/nuttx/examples/nettest/nettest.c
@@ -0,0 +1,108 @@
+/****************************************************************************
+ * examples/nettest/nettest.c
+ *
+ *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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 Gregory Nutt 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 COPYRIGHT HOLDERS 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
+ * COPYRIGHT OWNER 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <stdio.h>
+
+#include <net/uip/uip.h>
+#include <net/uip/uip-lib.h>
+
+#include "nettest.h"
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * user_initialize
+ ****************************************************************************/
+
+#ifndef CONFIG_HAVE_WEAKFUNCTIONS
+void user_initialize(void)
+{
+  /* Stub that must be provided only if the toolchain does
+   * not support weak functions.
+   */
+}
+#endif
+
+/****************************************************************************
+ * user_start
+ ****************************************************************************/
+
+int user_start(int argc, char *argv[])
+{
+  struct in_addr addr;
+
+  /* Set up our host address */
+
+  uip_ipaddr(addr.s_addr, 192, 168, 0, 128 );
+  uip_sethostaddr("eth0", &addr);
+
+  /* Set up the default router address */
+
+  uip_ipaddr(addr.s_addr, 192, 168, 0, 1);
+  uip_setdraddr("eth0", &addr);
+
+  /* Setup the subnet mask */
+
+  uip_ipaddr(addr.s_addr, 255, 255, 255, 0);
+  uip_setnetmask("eth0", &addr);
+
+#ifdef CONFIG_NETTEST_SERVER
+  recv_server();
+#else
+  send_client();
+#endif
+
+  return 0;
+}
+
+/****************************************************************************
+ * uip_log
+ ****************************************************************************/
+
+void uip_log(char *m)
+{
+  printf("uIP log message: %s\n", m);
+}
diff --git a/nuttx/examples/nettest/nettest.h b/nuttx/examples/nettest/nettest.h
new file mode 100644
index 000000000..0079a83a2
--- /dev/null
+++ b/nuttx/examples/nettest/nettest.h
@@ -0,0 +1,64 @@
+/****************************************************************************
+ * examples/nettest/nettest.h
+ *
+ *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * 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 Gregory Nutt 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 COPYRIGHT HOLDERS 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
+ * COPYRIGHT OWNER 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.
+ *
+ ****************************************************************************/
+
+#ifndef __EXAMPLES_NETTEST_H
+#define __EXAMPLES_NETTEST_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+#ifdef CONFIG_NETTEST_HOST
+#  define HTONS(a) htons(a)
+#  define HTONL(a) htonl(a)
+#else
+#  define errno   *get_errno_ptr()
+#endif
+
+#define PORTNO     5471
+#define SENDSIZE   512
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+extern void send_client(void);
+extern void recv_server(void);
+
+#endif /* __EXAMPLES_NETTEST_H */