![](/media/cache/group/default_image.jpg.50x50_q85.jpg)
Non-blocking example of the LWIPInterface
Dependencies: LWIPInterface NetworkSocketAPI mbed-rtos mbed
Non-blocking example for the NetworkSocketAPI. Attempts to get the device's public facing IP address from ifcfg.me using the Happy Eyeballs algorithm to fetch an IPv4 or IPv6 address.
main.cpp
- Committer:
- Christopher Haster
- Date:
- 2016-02-25
- Revision:
- 46:cf5ab96729e1
- Parent:
- 44:d7c5a56450a1
- Child:
- 50:a9926b8b21fe
File content as of revision 46:cf5ab96729e1:
/* NetworkSocketAPI Example Program * Copyright (c) 2015 ARM Limited * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "mbed.h" #include "LWIPInterface.h" #include "TCPSocket.h" DigitalOut myled(LED_GREEN); void flash(){ myled = !myled; } LWIPInterface eth; TCPSocket socket(ð); int main() { Ticker t; t.attach(flash, 0.4f); printf("NetworkSocketAPI Example\r\n"); eth.connect(); const char *ip = eth.getIPAddress(); const char *mac = eth.getMACAddress(); printf("IP Address is: %s\r\n", (ip) ? ip : "No IP"); printf("MAC Address is: %s\r\n", (mac) ? mac : "No MAC"); socket.open("time-a.nist.gov", 37); printf("time-a.nist.gov resolved to: %s\r\n", socket.getIPAddress()); char recieved[100] = {0}; int32_t size = 0; size = socket.recv(recieved, sizeof(recieved)); socket.close(); eth.disconnect(); printf("Recieved: %ld bytes, %02x%02x%02x%02x\r\n", size, recieved[0], recieved[1], recieved[2], recieved[3]); printf("NetworkSocketAPI Example Finished\r\n"); }