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

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

Committer:
sillevl
Date:
Tue Nov 17 16:44:39 2015 +0000
Revision:
29:62113a57353b
Parent:
19:6414961fb98d 
added method to get the ip address

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dwini 8:0169da22e764 1 #pragma once
dwini 8:0169da22e764 2
dwini 8:0169da22e764 3 /*
dwini 8:0169da22e764 4 Waarom client per server
dwini 8:0169da22e764 5 Ten eerste moeten van een repons dan niet bepalen voor welke request hij juist was.
dwini 8:0169da22e764 6 Alles dat voor een bepaalde client / socket toekomt is voor die client.
dwini 8:0169da22e764 7 Dat betekent ook dat we niet eeuwig moeten wachten op een respons maar dat we async
dwini 8:0169da22e764 8 kunnen werken en werken met timeouts. We overlopen dan gewoon constant de clients die nog
dwini 8:0169da22e764 9 geen respons hebben gekregen.
dwini 8:0169da22e764 10 */
dwini 8:0169da22e764 11
dwini 8:0169da22e764 12 #include <string>
dwini 8:0169da22e764 13 #include <vector>
dwini 8:0169da22e764 14 #include "cantcoap.h"
dwini 8:0169da22e764 15 #include "coap.h"
dwini 10:77bd145ec06c 16 #include "response.h"
dwini 10:77bd145ec06c 17 #include "request.h"
dwini 8:0169da22e764 18
dwini 8:0169da22e764 19 enum Method;
dwini 8:0169da22e764 20
dwini 8:0169da22e764 21 class Client {
dwini 8:0169da22e764 22
dwini 8:0169da22e764 23 private:
dwini 8:0169da22e764 24 // ResourceRequest holding info of previous request
dwini 8:0169da22e764 25 struct ResourceRequest{
dwini 8:0169da22e764 26 uint32_t token_id;
dwini 8:0169da22e764 27 char* uri;
dwini 10:77bd145ec06c 28 void (*response_handler)(Request*, Response*); // Not sure if we need request and respons PDU's
dwini 8:0169da22e764 29 int method;
dwini 8:0169da22e764 30 CoapPDU * req_pdu;
dwini 8:0169da22e764 31 };
dwini 8:0169da22e764 32
dwini 8:0169da22e764 33 private:
dwini 8:0169da22e764 34 UDPSocket udp_socket;
dwini 8:0169da22e764 35 Endpoint coap_server; // One client per endpoint
dwini 8:0169da22e764 36 uint32_t new_token_id; // Matches requests and responses
dwini 8:0169da22e764 37 uint16_t new_message_id;
dwini 8:0169da22e764 38 std::string identifier; // Identifier is some trivial string used for console output
dwini 8:0169da22e764 39
dwini 8:0169da22e764 40 // List of unhandled previous requests
dwini 8:0169da22e764 41 std::vector<ResourceRequest> requests;
dwini 8:0169da22e764 42
dwini 8:0169da22e764 43 public:
dwini 8:0169da22e764 44 Client(const char * server, const int port, std::string identifier="Client");
dwini 8:0169da22e764 45
dwini 8:0169da22e764 46 public:
dwini 19:6414961fb98d 47 void sendRequest(char* uri, void (*response_handler)(Request*, Response*), CoapPDU::Code method);
dwini 8:0169da22e764 48 void checkForResponse(void);
dwini 8:0169da22e764 49
dwini 8:0169da22e764 50 };