Yes We Can / yeswecancoap

Coap Client and Server

Dependencies:   DebugLib EthernetInterface cantcoap mbed-rtos

Dependents:   COAP coap

Fork of yeswecancoap by Sille Van Landschoot

YesWeCanCoap

Is a small coap client and server library for mbed based on the cantcoap library.

Import librarycantcoap

This is CoAP library with a focus on simplicity. It offers minimal CoAP PDU construction and decoding to and from byte buffers.

Last commit 30 Jan 2014 by Ashley Mills

yeswecancoap server enables easy implementation of coap resources, each with a dedicated function. When the function is registered by the server, it will do the rest.

Coap server example

Repository: YesWeCanCoap-example

Coap client example

under construction

server.h@29:62113a57353b, 2015-11-17 (annotated)

Committer:
sillevl
Date:
Tue Nov 17 16:44:39 2015 +0000
Revision:
29:62113a57353b
Parent:
25:7adc1d174b74 
added method to get the ip address

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sillevl 1:ab04e3d36ade 1 #pragma once
sillevl 1:ab04e3d36ade 2
sillevl 5:1924c60356d0 3
sillevl 1:ab04e3d36ade 4 #include "coap.h"
sillevl 1:ab04e3d36ade 5 #include "cantcoap.h"
sillevl 4:34a62b7cb2f9 6 #include "response.h"
sillevl 5:1924c60356d0 7 #include "request.h"
sillevl 4:34a62b7cb2f9 8
sillevl 3:e03960f91763 9 #include <vector>
sillevl 1:ab04e3d36ade 10
sillevl 24:8319d71d6749 11 enum CoapCode;
sillevl 24:8319d71d6749 12
sillevl 17:3e1d176e2d4a 13 /** Coap Server class
sillevl 17:3e1d176e2d4a 14 * Used to process and respond to coap requests
sillevl 17:3e1d176e2d4a 15 *
sillevl 17:3e1d176e2d4a 16 * @code
sillevl 17:3e1d176e2d4a 17 * #include "mbed.h"
sillevl 17:3e1d176e2d4a 18 * #include "coap.h"
sillevl 17:3e1d176e2d4a 19 *
sillevl 17:3e1d176e2d4a 20 * void get_demo(Request* req, Response* res)
sillevl 17:3e1d176e2d4a 21 * {
sillevl 17:3e1d176e2d4a 22 * // do your stuff here
sillevl 17:3e1d176e2d4a 23 * }
sillevl 17:3e1d176e2d4a 24 *
sillevl 17:3e1d176e2d4a 25 * int main() {
sillevl 17:3e1d176e2d4a 26 * Server server;
sillevl 17:3e1d176e2d4a 27 *
sillevl 25:7adc1d174b74 28 * server.add("/demo", &get_led, GET);
sillevl 17:3e1d176e2d4a 29 *
sillevl 17:3e1d176e2d4a 30 * while(1)
sillevl 17:3e1d176e2d4a 31 * {
sillevl 17:3e1d176e2d4a 32 * server.waitForRequest();
sillevl 17:3e1d176e2d4a 33 * };
sillevl 17:3e1d176e2d4a 34 * }
sillevl 17:3e1d176e2d4a 35 * @endcode
sillevl 17:3e1d176e2d4a 36 */
sillevl 1:ab04e3d36ade 37 class Server{
sillevl 1:ab04e3d36ade 38
sillevl 1:ab04e3d36ade 39 public:
sillevl 17:3e1d176e2d4a 40 /** Create a new Server instance */
sillevl 1:ab04e3d36ade 41 Server();
sillevl 1:ab04e3d36ade 42
sillevl 17:3e1d176e2d4a 43 /** Add a coap resource
sillevl 17:3e1d176e2d4a 44 *
sillevl 17:3e1d176e2d4a 45 * @param uri The resource URI to respond on
sillevl 17:3e1d176e2d4a 46 * @param function The corresponding function to call when a request for this resource is received
sillevl 17:3e1d176e2d4a 47 * @param method The method to respond to (GET, POST, PUT or DELETE)
sillevl 17:3e1d176e2d4a 48 *
sillevl 17:3e1d176e2d4a 49 */
sillevl 23:019c530468b4 50 void add(char* uri, void (*function)(Request*, Response*), CoapCode method);
sillevl 17:3e1d176e2d4a 51
sillevl 17:3e1d176e2d4a 52 /** Wait for a request and process that request
sillevl 17:3e1d176e2d4a 53 * @note This is usually placed inside a loop
sillevl 17:3e1d176e2d4a 54 */
sillevl 1:ab04e3d36ade 55 void waitForRequest();
sillevl 1:ab04e3d36ade 56
sillevl 17:3e1d176e2d4a 57 /** Enable broadcast functionality
sillevl 17:3e1d176e2d4a 58 * @param broadcast Boolean value to enable or disable broadcasting functionality
sillevl 17:3e1d176e2d4a 59 */
sillevl 16:62a87be3f0b8 60 void enableBroadcast(int broadcast = true);
sillevl 16:62a87be3f0b8 61
sillevl 29:62113a57353b 62 char* getIpAddress();
sillevl 29:62113a57353b 63
sillevl 1:ab04e3d36ade 64
sillevl 1:ab04e3d36ade 65 private:
sillevl 1:ab04e3d36ade 66 EthernetInterface eth;
sillevl 1:ab04e3d36ade 67 UDPSocket server;
sillevl 1:ab04e3d36ade 68 Endpoint client;
sillevl 1:ab04e3d36ade 69
sillevl 3:e03960f91763 70 struct Resource{
sillevl 3:e03960f91763 71 char* uri;
sillevl 5:1924c60356d0 72 void (*function)(Request*, Response*);
sillevl 3:e03960f91763 73 int method;
sillevl 3:e03960f91763 74 };
sillevl 3:e03960f91763 75
sillevl 3:e03960f91763 76 std::vector<Resource> resources;
sillevl 1:ab04e3d36ade 77
sillevl 11:642eaabf1c2b 78 int findResource(char* uri, CoapPDU::Code method);
sillevl 7:1bed29e1b0a4 79
sillevl 4:34a62b7cb2f9 80 static const int UDP_BUFFER_SIZE = 256;
sillevl 4:34a62b7cb2f9 81 static const int TOKEN_BUFFER_SIZE = 8;
sillevl 4:34a62b7cb2f9 82 static const int URI_BUFFER_SIZE = 64;
sillevl 4:34a62b7cb2f9 83
sillevl 1:ab04e3d36ade 84 };