client.c

#include <stdio.h>
#include <sol-mainloop.h>
#include <sol-network.h>
#include <sol-oic-client.h>

static struct sol_oic_client client = {
#ifdef SOL_OIC_CLIENT_API_VERSION
	SOL_OIC_CLIENT_API_VERSION,
#endif /* def SOL_OIC_CLIENT_API_VERSION */
	NULL, NULL
};

static bool resource_found(
		struct sol_oic_client *cli,
		struct sol_oic_resource *res,
		void *data) {
	if (res) {
		printf("Found resource with href: %.*s\n", SOL_STR_SLICE_PRINT(res->href));
	} else {
		printf("null resource\n");
	}
	sol_quit();
	return false;
}

static void startup() {
	struct sol_network_link_addr address = {
		.family = SOL_NETWORK_FAMILY_INET,
		.port = 5683,
		.addr = { .in6 = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } }
	};
	sol_network_addr_from_str(&address, "224.0.1.187");
	client.server = sol_coap_server_new(0);
	if (!sol_oic_client_find_resource(&client, 
		&address, "",
			resource_found, NULL)) {
		fprintf(stderr, "Failed to search for resources");
		sol_quit();
		return;
	}
}

static void shutdown() {}

SOL_MAIN_DEFAULT(startup, shutdown);

server.c

#include <stdio.h>
#include <sol-mainloop.h>
#include <sol-oic-server.h>

#define HANDLER_SIGNATURE \
		const struct sol_network_link_addr *cliaddr, \
		const void *data, \
		const struct sol_oic_map_reader *input, \
		struct sol_oic_map_writer *output \

static sol_coap_responsecode_t unifiedHandler(HANDLER_SIGNATURE,
		const char *methodName) {
	fprintf(stderr, "method: %s\n", methodName);
	return SOL_COAP_RSPCODE_NOT_IMPLEMENTED;
}

static sol_coap_responsecode_t getHandler(HANDLER_SIGNATURE) {
	return unifiedHandler(cliaddr, data, input, output, "get");
}

static sol_coap_responsecode_t putHandler(HANDLER_SIGNATURE) {
	return unifiedHandler(cliaddr, data, input, output, "put");
}

static sol_coap_responsecode_t postHandler(HANDLER_SIGNATURE) {
	return unifiedHandler(cliaddr, data, input, output, "post");
}

static sol_coap_responsecode_t delHandler(HANDLER_SIGNATURE) {
	return unifiedHandler(cliaddr, data, input, output, "del");
}

static struct sol_oic_resource_type resourceDefinition = {
#ifdef SOL_OIC_RESOURCE_TYPE_API_VERSION
	SOL_OIC_RESOURCE_TYPE_API_VERSION,
#endif /* def SOL_OIC_RESOURCE_TYPE_API_VERSION */
	{ 10, "core.light" },
	{ 15, "oic.if.baseline" },
	{ getHandler },
	{ putHandler },
	{ postHandler },
	{ delHandler }
};

static struct sol_oic_server_resource *resource = NULL;

static void startup() {
	if (sol_oic_server_init()) {
		fprintf(stderr, "sol_oic_server_init() failed\n");
		sol_quit();
		return;
	}
	resource = sol_oic_server_add_resource(&resourceDefinition, NULL,
		SOL_OIC_FLAG_DISCOVERABLE | SOL_OIC_FLAG_OBSERVABLE);
}

static void shutdown() {
	sol_oic_server_shutdown();
}

SOL_MAIN_DEFAULT(startup, shutdown);

cc -g -Wall -O0 -I$(pwd)/build/soletta_sysroot/usr/include/soletta -L$(pwd)/build/soletta_sysroot/usr/lib -lsoletta -Wl,-R$(pwd)/build/soletta_sysroot/usr/lib -o client client.c
cc -g -Wall -O0 -I$(pwd)/build/soletta_sysroot/usr/include/soletta -L$(pwd)/build/soletta_sysroot/usr/lib -lsoletta -Wl,-R$(pwd)/build/soletta_sysroot/usr/lib -o server server.c