This is a quick example of a simple HTTP client program using the network-socket API that is provided as a part of mbed-os. The program brings up an underlying network interface, and uses it to perform an HTTP transaction over a TCPSocket.
Diff: main.cpp
- Revision:
- 5:3e952c60d705
- Parent:
- 0:17bd84fc5087
- Child:
- 12:2e7466eba9a3
--- a/main.cpp Mon Nov 28 16:00:06 2016 +0000 +++ b/main.cpp Thu Dec 15 16:15:05 2016 +0000 @@ -1,74 +1,38 @@ #include "mbed.h" -#include "TCPSocket.h" +#include "EthernetInterface.h" -#define STR(x) STR2(x) -#define STR2(x) #x - +// Network interface +EthernetInterface net; // Socket demo -void http_demo(NetworkInterface *net) { - TCPSocket socket; +int main() { + // Bring up the ethernet interface + printf("Ethernet socket example\n"); + net.connect(); // Show the network address - const char *ip = net->get_ip_address(); + const char *ip = net.get_ip_address(); printf("IP address is: %s\n", ip ? ip : "No IP"); // Open a socket on the network interface, and create a TCP connection to mbed.org - socket.open(net); + TCPSocket socket; + socket.open(&net); socket.connect("developer.mbed.org", 80); // Send a simple http request char sbuffer[] = "GET / HTTP/1.1\r\nHost: developer.mbed.org\r\n\r\n"; int scount = socket.send(sbuffer, sizeof sbuffer); - printf("sent %d [%.*s]\r\n", scount, strstr(sbuffer, "\r\n")-sbuffer, sbuffer); + printf("sent %d [%.*s]\n", scount, strstr(sbuffer, "\r\n")-sbuffer, sbuffer); // Recieve a simple http response and print out the response line char rbuffer[64]; int rcount = socket.recv(rbuffer, sizeof rbuffer); - printf("recv %d [%.*s]\r\n", rcount, strstr(rbuffer, "\r\n")-rbuffer, rbuffer); + printf("recv %d [%.*s]\n", rcount, strstr(rbuffer, "\r\n")-rbuffer, rbuffer); // Close the socket to return its memory and bring down the network interface socket.close(); -} - -// Example with the ESP8266 interface -#if defined(MBED_DEMO_WIFI) -#include "ESP8266Interface.h" - -ESP8266Interface wifi(D1, D0); - -int main() { - // Brings up the esp8266 - printf("ESP8266 socket example\n"); - wifi.connect(STR(MBED_DEMO_WIFI_SSID), STR(MBED_DEMO_WIFI_PASS)); - - // Invoke the demo - http_demo(&wifi); - - // Brings down the esp8266 - wifi.disconnect(); - + // Bring down the ethernet interface + net.disconnect(); printf("Done\n"); } - -// Example using the builtin ethernet interface -#else -#include "EthernetInterface.h" - -EthernetInterface eth; - -int main() { - // Brings up the ethernet interface - printf("Ethernet socket example\n"); - eth.connect(); - - // Invoke the demo - http_demo(ð); - - // Brings down the ethernet interface - eth.disconnect(); - - printf("Done\n"); -} -#endif