--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/network/TCPIP.c	Sat Sep 15 21:49:05 2012 +0800
@@ -0,0 +1,206 @@
+/*
+    LUFA Powered Wireless 3G Modem Host
+	
+    Copyright (C) Mike Alexander, 2010.
+     Copyright (C) Dean Camera, 2010.
+*/
+
+/*
+  Copyright 2010  Mike Alexander (mike [at] mikealex [dot] com)
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this 
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in 
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting 
+  documentation, and that the name of the author not be used in 
+  advertising or publicity pertaining to distribution of the 
+  software without specific, written prior permission.
+
+  The author disclaim all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+#define  INCLUDE_FROM_TCPIP_C
+#include "TCPIP.h"
+
+uint8_t						IPAddr1, IPAddr2, IPAddr3, IPAddr4;
+static uip_ipaddr_t			RemoteIPAddress;
+static struct uip_conn*		TCPConnection;
+static struct timer			Periodic_Timer;
+
+bool TCPIP_Connect(void)
+{
+	// Connect to the remote machine (www.example.com)
+	uip_ipaddr(&RemoteIPAddress, 192, 0, 32, 10);	
+	TCPConnection = uip_connect(&RemoteIPAddress, UIP_HTONS(80));
+
+	if (TCPConnection != NULL)
+	{
+		Debug_Print("Connecting to host\r\n");
+		return true;
+	}
+	else
+	{
+		Debug_Print("Failed to Connect\r\n");
+		return false;
+	}
+}
+
+void TCPIP_TCPCallback(void)
+{
+	if (uip_acked())
+		Debug_Print("[ACK] ");
+
+	if (uip_newdata())
+	{
+		Debug_Print("New Data:\r\n");
+		TCPIP_QueueData(uip_appdata, uip_datalen());
+		
+		if (TCPIP_IsDataQueueFull())
+		  uip_stop();
+	}
+
+	if (uip_connected())
+	{
+		Debug_Print("Connected - Maximum Segment Size: 0x"); Debug_PrintHex(uip_mss() / 256); Debug_PrintHex(uip_mss() & 255); 
+		Debug_Print("\r\n");
+	}
+
+	if (uip_closed())
+	{
+		Debug_Print("Closed - Reconnecting...");
+		_delay_ms(1000);
+		ConnectedState = LINKMANAGEMENT_STATE_ConnectToRemoteHost;
+	}
+
+	if (uip_aborted())
+	{
+		Debug_Print("Aborted - Reconnecting... ");
+		_delay_ms(1000);
+		ConnectedState = LINKMANAGEMENT_STATE_ConnectToRemoteHost;
+	}
+
+	if (uip_timedout())
+	{
+		Debug_Print("Timeout - Reconnecting...");
+		uip_abort();
+		_delay_ms(1000);
+		ConnectedState = LINKMANAGEMENT_STATE_ConnectToRemoteHost;
+	}
+
+	if (uip_poll() && (SystemTicks > 3000))
+	{
+		SystemTicks = 0;
+		
+		Debug_Print("\r\nSending GET\r\n");
+		TCPIP_SendGET();
+	}
+	
+	if (uip_rexmit())
+	{
+		Debug_Print("\r\nRetransmit GET\r\n");
+		TCPIP_SendGET();
+	}
+
+	if (uip_poll() && uip_stopped(TCPConnection))
+	{
+		if (!(TCPIP_IsDataQueueFull()))
+		  uip_restart();
+	}
+}
+
+static void TCPIP_SendGET(void)
+{
+	const char GETRequest[] = "GET / HTTP/1.1\r\n"
+	                          "Host: www.example.com\r\n"
+	                          "Connection: Keep-Alive\r\n\r\n";
+
+	uip_send(GETRequest, strlen(GETRequest));
+}
+
+static void TCPIP_QueueData(const char* Data,
+                            const uint16_t Length)
+{
+	if (Length > 0)
+		WatchdogTicks = 0;							// Reset the timeout counter
+	
+	for (uint16_t i = 0; i < Length; i++)
+		putchar(Data[i]);
+	
+	Debug_Print("\r\n");
+}
+
+static bool TCPIP_IsDataQueueFull(void)
+{
+	return false;
+}
+
+void TCPIP_InitializeTCPStack(void)
+{
+	Debug_Print("Init TCP Stack\r\n");
+	
+	// Periodic Connection Timer Initialization
+	timer_set(&Periodic_Timer, CLOCK_SECOND / 2);
+	
+	// uIP Initialization
+	network_init();
+	clock_init();
+	uip_init();
+
+	// Set this machine's IP address
+	uip_ipaddr_t LocalIPAddress;
+	uip_ipaddr(&LocalIPAddress, IPAddr1, IPAddr2, IPAddr3, IPAddr4);
+	uip_sethostaddr(&LocalIPAddress);
+
+	ConnectedState = LINKMANAGEMENT_STATE_ConnectToRemoteHost;
+	SystemTicks = 2000;			// Make the first CONNECT happen straight away
+}
+
+void TCPIP_ConnectToRemoteHost(void)
+{
+	if (SystemTicks > 1000)		// Try to connect every 1 second
+	{
+		SystemTicks = 0;
+		
+		if (TCPIP_Connect())
+		{
+			SystemTicks = 3001;	// Make the first GET happen straight away
+			uip_len = 0;
+			ConnectedState = LINKMANAGEMENT_STATE_ManageTCPConnection;
+		}
+	}
+}
+
+void TCPIP_GotNewPacket(void)
+{
+	uip_input();																// Call the TCP/IP stack with the new packet
+																					
+	if (uip_len > 0)															// If the above function invocation resulted in data that should be sent out
+	  network_send(IP);														// on the network, the global variable uip_len is set to a value > 0.
+}
+
+void TCPIP_TCPIPTask(void)
+{
+	if (timer_expired(&Periodic_Timer))
+	{
+		timer_reset(&Periodic_Timer);
+		
+		Debug_PrintChar('*');
+		
+		for (uint8_t i = 0; i < UIP_CONNS; i++)
+		{
+	 		uip_periodic(i);
+	 		 
+	 		if (uip_len > 0)													// If the above function invocation resulted in data that should be sent out on the network,
+			  network_send(IP);												//the global variable uip_len is set to a value > 0.
+		}
+	}
+}