xiao sun
/
mbed-os-example-sockets
NS example
Diff: main.cpp
- Revision:
- 0:f40a402e1725
diff -r 000000000000 -r f40a402e1725 main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Tue May 02 15:29:27 2017 +0000 @@ -0,0 +1,52 @@ +#include "mbed.h" +#include "EthernetInterface.h" + +// Network interface +EthernetInterface net; + +// Socket demo +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 *netmask = net.get_netmask(); + const char *gateway = net.get_gateway(); + printf("IP address: %s\n", ip ? ip : "None"); + printf("Netmask: %s\n", netmask ? netmask : "None"); + printf("Gateway: %s\n", gateway ? gateway : "None"); + + // Open a socket on the network interface, and create a TCP connection to mbed.org + TCPSocket socket; +//UDPSocket udp; +//udp.open(&net); +//udp.bind(56830); +//udp.sendto(); +//udp.recvfrom(); + socket.open(&net); + socket.connect("api.ipify.org", 80); + char *buffer = new char[256]; + + // Send an HTTP request + strcpy(buffer, "GET / HTTP/1.1\r\nHost: api.ipify.org\r\n\r\n"); + int scount = socket.send(buffer, strlen(buffer)); + printf("sent %d [%.*s]\n", scount, strstr(buffer, "\r\n")-buffer, buffer); + + // Recieve an HTTP response and print out the response line + int rcount = socket.recv(buffer, 256); + printf("recv %d [%.*s]\n", rcount, strstr(buffer, "\r\n")-buffer, buffer); + + // The api.ipify.org service also gives us the device's external IP address + const char *payload = strstr(buffer, "\r\n\r\n")+4; + printf("External IP address: %.*s\n", rcount-(payload-buffer), payload); + + // Close the socket to return its memory and bring down the network interface + socket.close(); + delete[] buffer; + + // Bring down the ethernet interface + net.disconnect(); + printf("Done\n"); +}