WIP: Moved sources int src/, separated most of the source code from Perl.

The XS was left only for the unit / integration tests, and it links
libslic3r only. No wxWidgets are allowed to be used from Perl starting
from now.

src/slic3r/Utils/Bonjour.hpp

@@ -0,0 +1,64 @@
+#ifndef slic3r_Bonjour_hpp_
+#define slic3r_Bonjour_hpp_
+
+#include <cstdint>
+#include <memory>
+#include <string>
+#include <functional>
+#include <boost/asio/ip/address.hpp>
+
+
+namespace Slic3r {
+
+
+struct BonjourReply
+{
+	boost::asio::ip::address ip;
+	uint16_t port;
+	std::string service_name;
+	std::string hostname;
+	std::string full_address;
+	std::string path;
+	std::string version;
+
+	BonjourReply() = delete;
+	BonjourReply(boost::asio::ip::address ip, uint16_t port, std::string service_name, std::string hostname, std::string path, std::string version);
+
+	bool operator==(const BonjourReply &other) const;
+	bool operator<(const BonjourReply &other) const;
+};
+
+std::ostream& operator<<(std::ostream &, const BonjourReply &);
+
+
+/// Bonjour lookup performer
+class Bonjour : public std::enable_shared_from_this<Bonjour> {
+private:
+	struct priv;
+public:
+	typedef std::shared_ptr<Bonjour> Ptr;
+	typedef std::function<void(BonjourReply &&)> ReplyFn;
+	typedef std::function<void()> CompleteFn;
+
+	Bonjour(std::string service, std::string protocol = "tcp");
+	Bonjour(Bonjour &&other);
+	~Bonjour();
+
+	Bonjour& set_timeout(unsigned timeout);
+	Bonjour& set_retries(unsigned retries);
+	// ^ Note: By default there is 1 retry (meaning 1 broadcast is sent).
+	// Timeout is per one retry, ie. total time spent listening = retries * timeout.
+	// If retries > 1, then care needs to be taken as more than one reply from the same service may be received.
+
+	Bonjour& on_reply(ReplyFn fn);
+	Bonjour& on_complete(CompleteFn fn);
+
+	Ptr lookup();
+private:
+	std::unique_ptr<priv> p;
+};
+
+
+}
+
+#endif