Diff: examples/purehttpc/main.cpp

Revision:

0:5e1631496985

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/purehttpc/main.cpp	Tue May 08 15:32:10 2012 +0100
@@ -0,0 +1,109 @@
+#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"
+
+DigitalOut led(LED1);
+
+/* Struct with hold the Ethernet Data */
+struct netif    netif_data;
+
+/* 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) {
+    printf("recv_callback\n");
+    if (p==NULL) {
+        printf("Connection closed by server!\n");
+        return ERR_OK;
+    }
+
+    while (p) {
+        char * ch = (char*)p->payload;
+        printf("\n>>>>>>>>>>>>\n");
+        for (int i=0; i < p->len; i++) {
+            printf("%c", ch[i]);
+        }
+        printf("\n<<<<<<<<<<<<\n");
+        p = p->next;
+    }
+    tcp_recved(pcb, p->tot_len);
+    pbuf_free(p);
+    return ERR_OK;
+}
+
+/* Connection etablished, lets try to get a http page */
+err_t connected_callback(void *arg, struct tcp_pcb *pcb, err_t err) {
+    tcp_recv(pcb, &recv_callback);
+    printf("Connected Callback!\n");
+    char msg[] = "GET / HTTP/1.1\r\nHost: www.google.co.uk\r\n\r\n";
+    if (tcp_write(pcb, msg, strlen(msg), 1) != ERR_OK) {
+        error("Could not write", 0);
+    }
+    return ERR_OK;
+}
+
+int main(void) {
+    /* Create and initialise variables */
+    struct netif   *netif = &netif_data;
+    struct ip_addr  ipaddr;
+    struct ip_addr  target;
+    struct ip_addr  netmask;
+    struct ip_addr  gateway;
+
+    Ticker tickFast, tickSlow, tickARP, eth_tick, dns_tick, dhcp_coarse, dhcp_fine;
+    char *hostname = "mbed-c3p0";
+
+    /* 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);
+    IP4_ADDR(&target, 209,85,229,147); // www.google.co.uk
+
+    /* 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( &etharp_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);
+
+    // Wait for an IP Address
+    while (!netif_is_up(netif)) {
+        device_poll();
+    }
+
+    /* Connect do google */
+    struct tcp_pcb *pcb = tcp_new();
+    tcp_connect(pcb, &target, 80, &connected_callback);
+
+    /* Give the signal that we are ready */
+    printf("entering while loop\n");
+    while (1) {
+        led = !led;
+        wait(0.1);
+        device_poll();
+    }
+}
+