Wi-Fi Direct cmdline

src/AvahiService.hpp

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+/*
+ * MIT License
+ * 
+ * Copyright (c) 2022 Robin E. R. Davies
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#pragma once
+
+#include <thread>
+#include <string>
+
+// forward declarations.
+class AvahiEntryGroup;
+class AvahiThreadedPoll;
+
+#include <avahi-client/client.h>
+
+
+namespace pipedal {
+
+    class AvahiService {
+    public:
+        ~AvahiService() { Unannounce(); }
+        void Announce(int portNumber, const std::string &name, const std::string &instanceId, const std::string&mdnsName);
+
+        void Unannounce();
+
+    private: 
+        void Start();
+        void Stop();
+        static void entry_group_callback(AvahiEntryGroup*g, AvahiEntryGroupState state, void *userData);
+        void EntryGroupCallback(AvahiEntryGroup*g, AvahiEntryGroupState state);
+
+        static void client_callback(AvahiClient *c, AvahiClientState state, AVAHI_GCC_UNUSED void * userdata);
+        void ClientCallback(AvahiClient *c, AvahiClientState state);
+
+
+        void create_group(AvahiClient *c);
+
+        void threadProc();
+
+        int clientErrno = 0;
+
+        int portNumber = -1;
+        std::string instanceId;
+        std::string mdnsName;
+
+        AvahiClient *client = NULL;
+        AvahiEntryGroup *group = NULL;
+        AvahiThreadedPoll *threadedPoll = NULL;
+        char*name = NULL;
+
+    };
+
+}
+