Merge pull request #20 from mrdeep1/server_version

server.cc: Add in alternative resource

.github/workflows/main.yml

@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        LIBVER: ["v4.3.4", "develop"]
+        LIBVER: ["develop", "v4.3.4", "v4.3.3", "v4.3.2"]
     steps:
       - uses: actions/checkout@v4
       - name: setup

README.md

@@ -1,10 +1,10 @@
 Minimal CoAP Client and Server Examples for libcoap
 ===================================================
 
-These examples require [libcoap-3](https://github.com/obgm/libcoap) to
-work.
+These examples require [libcoap-3](https://github.com/obgm/libcoap) with a
+minimum version of 4.3.2 to compile and execute.
 
-`client.cc` shows a minimal libcoap client that sends a confirmable
+`client.cc` is a minimal libcoap client that sends a confirmable
 UDP `GET /hello` request to a pre-defined CoAP server
 ([coap.me](http://coap.me) in this example) and outputs a received
 response. It supports an optional argument which can be a different
@@ -13,7 +13,8 @@ then this is handled by a NON-confirmable request.
 
 `server.cc` is a minimal CoAP server that binds on
 `::5683`, as well as the multicast IPs 224.0.1.187 and ff02::fd.
-It has a single resource `/hello`.
+It has two defined resources `/hello` and `hello/my` along with the
+inbuilt resource `.well-known/core`.
 
 Copyright (C) 2018-2024 Olaf Bergmann <bergmann@tzi.org>
 

server.cc

@@ -94,6 +94,20 @@ main(void) {
                          });
   coap_add_resource(ctx, resource);
 
+  /* Create another resource that the server can respond to with information */
+  resource = coap_resource_init(coap_make_str_const("hello/my"), 0);
+  coap_register_handler(resource, COAP_REQUEST_GET,
+                        [](auto, auto,
+                           const coap_pdu_t *request,
+                           auto, coap_pdu_t *response) {
+                           coap_show_pdu(COAP_LOG_WARN, request);
+                           coap_pdu_set_code(response, COAP_RESPONSE_CODE_CONTENT);
+                           coap_add_data(response, 8,
+                                         (const uint8_t *)"my world");
+                           coap_show_pdu(COAP_LOG_WARN, response);
+                         });
+  coap_add_resource(ctx, resource);
+
   /* Handle any libcoap I/O requirements */
   while (true) {
     coap_io_process(ctx, COAP_IO_WAIT);