Ilya I
/
pub_iva2k_HTTPDynamicPage
Diff: main.cpp
- Revision:
- 0:b0aa20381646
diff -r 000000000000 -r b0aa20381646 main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Thu Dec 10 08:59:18 2009 +0000 @@ -0,0 +1,127 @@ +#include "mbed.h" +#include "HTTPServer.h" +#include "HTTPFS.h" +#include "HTTPDynamicPage.h" + +#define MAX_DYNAMIC_CONTENT_LEN 2048 +char dynamic_content[MAX_DYNAMIC_CONTENT_LEN]; + +const char content_fmt[] = +"<HTML>" +"<HEAD>" +"<title>Dynamic Page</title>" +"</HEAD>" +"<BODY>" +"<H1>Hello World</H1>" +"<p>Page generated dynamically from code.</p>" +"<p>URL=%s</p>" +"<p>Header Fields=%s</p>" +"</BODY></HTML>" +; + +DigitalOut led1(LED1, "led1"); +DigitalOut led2(LED2, "led2"); +DigitalOut led3(LED3, "led3"); +DigitalOut led4(LED4, "led4"); + +#define LED_ETH_LINK(val) do { led4=val; } while (0) + +extern Ethernet eth; // eth is defined elsewhere, avoid compiler error. +Serial pc(USBTX, USBRX); +Ticker eth_timer; + +void eth_link_status() { + static bool first = true; // Avoid duplicate IP report on the very first pass + static int eth_link = -1; // Last state of eth link + static unsigned int old_ip = 0; // Last IP address + int new_link = eth.link(); + if (eth_link != new_link) { + if (new_link) { + // From http://mbed.org/forum/post/909/ + NetServer *net = NetServer::get(); + struct ip_addr ip = net->getIPAddr(); +// struct ip_addr gw = net->getGateway(); +// struct ip_addr nm = net->getNetmask(); +// struct ip_addr dns = net->getDNS1(); + if (!first) printf("IP: %hhu.%hhu.%hhu.%hhu\r\n", (ip.addr)&0xFF, (ip.addr>>8)&0xFF, (ip.addr>>16)&0xFF, (ip.addr>>24)&0xFF); + first = false; + if (1 && ip.addr != old_ip) { + // Create a link file to our IP. + FILE *fp = fopen("/local/Start.url", "w"); // Create link to own IP + if (fp) { + fprintf(fp, "[InternetShortcut]\r\nURL=http://%hhu.%hhu.%hhu.%hhu/\r\n", (ip.addr)&0xFF, (ip.addr>>8)&0xFF, (ip.addr>>16)&0xFF, (ip.addr>>24)&0xFF); + fclose(fp); + old_ip = ip.addr; + } + } + + } + else { + printf("IP: <link down>\r\n"); + } + LED_ETH_LINK(new_link); + eth_link = new_link; + } +} + +HTTPStatus myDynamicPage(HTTPConnection *con, HTTPDynamicPageData *pd) { +#if 0 + // Static example. With this, we don't really need HTTPStaticPage + pd->size = 0; // let it measure our page + pd->page = (char*)content; // Nothing dynamic about that yet, but we can now get loose here. + pd->page_free = NULL; // No mem free() needed +#elif 0 + // Dynamic example, static buffer + pd->size = sprintf(dynamic_content, content_fmt, con->getURL(), con->getHeaderFields()); + pd->page = (char*)dynamic_content; + pd->page_free = NULL; // No mem free() needed +if(pd->size > sizeof(dynamic_content)) printf("ASSERTION FAILED: %s:%d\r\n", __FILE__, __LINE__); // Buffer overrun +#else + // Dynamic example, dynamic buffer + int size = sizeof(content_fmt) + 512; // Just guess how much the data will expand + char *buf = (char *)malloc(size); + if (buf) { + pd->size = sprintf(buf, content_fmt, con->getURL(), con->getHeaderFields()); + pd->page = buf; + pd->page_free = &free; // Use free() when done +if(pd->size > size) printf("ASSERTION FAILED: %s:%d\r\n", __FILE__, __LINE__); // Buffer overrun +#endif + } + return HTTP_OK; +} + +int main(void) { + char mac[6]; + + led1=1; + led2=1; + led3=1; + led4=1; + + char *hostname = "mbed"; + HTTPServer http(hostname); // Use DHCP + http.timeout(60000); // Sets the timout for a HTTP request. The timout is the time wich is allowed to spent between two incomming TCP packets. If the time is passed the connection will be closed. + + eth.address(mac); + pc.printf("\r\n\r\nHTTPServer \"%s\" started\r\nMAC %02X:%02X:%02X:%02X:%02X:%02X\r\n", + hostname, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); + + led1=0; + + led2=0; + + http.addHandler(new HTTPDynamicPage("/dynamic.htm", &myDynamicPage)); + led3=0; + +// FIXME: BUG If eth is not plugged, http.bind() hangs for awhile! + http.bind(); + + led4 = 0; + eth_timer.attach(ð_link_status, 0.1); + while(1) { + http.poll(); // Have to call this method at least every 250ms to let the http server run. + wait(0.100); + } +} + +//END \ No newline at end of file