Joe Danlloh
f
Fork of
lwip
by 
mbed unsupported
Diff: examples/purehttpd/main.cpp
- Revision:
- 0:5e1631496985
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/purehttpd/main.cpp Tue May 08 15:32:10 2012 +0100
@@ -0,0 +1,172 @@
+#include "lwip/opt.h"
+#include "lwip/stats.h"
+#include "lwip/sys.h"
+#include "lwip/pbuf.h"
+#include "lwip/udp.h"
+#include "lwip/tcp.h"
+#include "lwip/dns.h"
+#include "lwip/dhcp.h"
+#include "lwip/init.h"
+#include "lwip/netif.h"
+#include "netif/etharp.h"
+#include "netif/loopif.h"
+#include "device.h"
+
+#include "mbed.h"
+
+/* Some Lights */
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+int x = 0;
+
+/* Struct with hold the Ethernet Data */
+struct netif netif_data;
+
+/* Two static html pages ready for serving, includeing http header */
+const char *page[] = {
+ "HTTP/1.1 200 OK\r\n"
+ "Server:mbed embedded\r\n"
+ "Content-Type: text/html\r\n"
+ "Content-Length: 190\r\n"
+ "\r\n"
+ "<html>\r\n"
+ " <header>\r\n"
+ " <title>Whats up?<title>\r\n"
+ " </header>\r\n"
+ " <body>\r\n"
+ " <h1>Hello World!!11elf</h1>\r\n"
+ " <p>Have a greate day.</p>\r\n"
+ " <a href=\"/1.html\">turn </a>\r\n"
+ " </body>\r\n"
+ "</html>\r\n"
+ "\r\n"
+ ,
+ "HTTP/1.1 200 OK\r\n"
+ "Server:mbed embedded\r\n"
+ "Content-Type: text/html\r\n"
+ "Content-Length: 178\r\n"
+ "\r\n"
+ "<html>\r\n"
+ " <header>\r\n"
+ " <title>LED Power<title>\r\n"
+ " </header>\r\n"
+ " <body>\r\n"
+ " <h1>Lets rotate!!11elf</h1>\r\n"
+ " <p>Bam!!!!!!!!!!.</p>\r\n"
+ " <a href=\"/\">back</a>\r\n"
+ " </body>\r\n"
+ "</html>\r\n"
+ "\r\n"
+};
+
+/* Every time called if a packet is received for a */
+/* TCPConnection which registerd this Callback. */
+err_t recv_callback(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err) {
+ int i;
+ char *data;
+
+ /* Check if status is ok and data is arrived. */
+ if (err == ERR_OK && p != NULL) {
+ /* Inform TCP that we have taken the data. */
+ tcp_recved(pcb, p->tot_len);
+ data = static_cast<char *>(p->payload);
+
+ /* If the data is a GET request we can handle it. */
+ if (strncmp(data, "GET ", 4) == 0) {
+ for (i = 0; i < 40; i++) {
+ if (((char *)data + 4)[i] == ' ' ||
+ ((char *)data + 4)[i] == '\r' ||
+ ((char *)data + 4)[i] == '\n') {
+ ((char *)data + 4)[i] = 0;
+ }
+ }
+
+ /* Check the URL */
+ /* We only know two URLs /1.html and default */
+ /* store the URL information in our global x variable to change twinkle behaviour. */
+ x = (strncmp((char *)(data + 4), "/1.html", 7) == 0)? 1: 0;
+ /* Clean up the Memory */
+ pbuf_free(p);
+
+ /* Send the right page as answere. */
+ if (tcp_write(pcb, (void *)page[x], strlen(page[x]), 1) != ERR_OK) {
+ //error("Could not write", 0);
+ }
+ } else {
+ /* No data arrived */
+ /* That means the client closes the connection and sent us a packet with FIN flag set to 1. */
+ /* We have to cleanup and destroy out TCPConnection. */
+ pbuf_free(p);
+ }
+ }
+
+ /* Don't panic! Everything is fine. */
+ return ERR_OK;
+}
+
+/* Accept an incomming call on the registered port */
+err_t accept_callback(void *arg, struct tcp_pcb *npcb, err_t err) {
+ LWIP_UNUSED_ARG(arg);
+ /* Subscribe a receive callback function */
+ tcp_recv(npcb, &recv_callback);
+
+ /* Don't panic! Everything is fine. */
+ return ERR_OK;
+}
+
+int main(void) {
+ /* Create and initialise variables */
+ struct netif *netif = &netif_data;
+ struct ip_addr ipaddr;
+ struct ip_addr netmask;
+ struct ip_addr gateway;
+
+ Ticker tickFast, tickSlow, tickARP, eth_tick, dns_tick, dhcp_coarse, dhcp_fine;
+ char *hostname = "mbed-c3p0";
+ x = 0;
+
+ /* Start Network with DHCP */
+ IP4_ADDR(&netmask, 255,255,255,255);
+ IP4_ADDR(&gateway, 0,0,0,0);
+ IP4_ADDR(&ipaddr, 0,0,0,0);
+
+ /* Initialise after configuration */
+ lwip_init();
+
+ netif->hwaddr_len = ETHARP_HWADDR_LEN;
+ device_address((char *)netif->hwaddr);
+
+ netif = netif_add(netif, &ipaddr, &netmask, &gateway, NULL, device_init, ip_input);
+ netif->hostname = hostname;
+ netif_set_default(netif);
+ dhcp_start(netif); // <-- Use DHCP
+
+ /* Initialise all needed timers */
+ tickARP.attach_us( ðarp_tmr, ARP_TMR_INTERVAL * 1000);
+ tickFast.attach_us(&tcp_fasttmr, TCP_FAST_INTERVAL * 1000);
+ tickSlow.attach_us(&tcp_slowtmr, TCP_SLOW_INTERVAL * 1000);
+ dns_tick.attach_us(&dns_tmr, DNS_TMR_INTERVAL * 1000);
+ dhcp_coarse.attach_us(&dhcp_coarse_tmr, DHCP_COARSE_TIMER_MSECS * 1000);
+ dhcp_fine.attach_us(&dhcp_fine_tmr, DHCP_FINE_TIMER_MSECS * 1000);
+
+ /* Bind a function to a tcp port */
+ struct tcp_pcb *pcb = tcp_new();
+ if (tcp_bind(pcb, IP_ADDR_ANY, 80) == ERR_OK) {
+ pcb = tcp_listen(pcb);
+ tcp_accept(pcb, &accept_callback);
+ }
+
+ /* Give the signal that we are ready */
+ printf("entering while loop\n");
+ while(1) {
+ device_poll();
+ if (x) {
+ led1 = !led1;
+ wait(0.2);
+ } else {
+ led2 = !led2;
+ wait(0.2);
+ }
+ }
+}
+