init

src/client/game/demonware/servers/stun_server.cpp

@@ -0,0 +1,62 @@
+#include <std_include.hpp>
+#include "stun_server.hpp"
+
+#include "../byte_buffer.hpp"
+
+namespace demonware
+{
+	void stun_server::handle(const endpoint_data& endpoint, const std::string& packet)
+	{
+		uint8_t type, version, padding;
+
+		byte_buffer buffer(packet);
+		buffer.set_use_data_types(false);
+		buffer.read_byte(&type);
+		buffer.read_byte(&version);
+		buffer.read_byte(&padding);
+
+		switch (type)
+		{
+		case 30:
+			this->ip_discovery(endpoint);
+			break;
+		case 20:
+			this->nat_discovery(endpoint);
+			break;
+		default:
+			break;
+		}
+	}
+
+	void stun_server::ip_discovery(const endpoint_data& endpoint)
+	{
+		const uint32_t ip = 0x0100007f;
+
+		byte_buffer buffer;
+		buffer.set_use_data_types(false);
+		buffer.write_byte(31); // type
+		buffer.write_byte(2); // version
+		buffer.write_byte(0); // version
+		buffer.write_uint32(ip); // external ip
+		buffer.write_uint16(3074); // port
+
+		this->send(endpoint, buffer.get_buffer());
+	}
+
+	void stun_server::nat_discovery(const endpoint_data& endpoint)
+	{
+		const uint32_t ip = 0x0100007f;
+
+		byte_buffer buffer;
+		buffer.set_use_data_types(false);
+		buffer.write_byte(21); // type
+		buffer.write_byte(2); // version
+		buffer.write_byte(0); // version
+		buffer.write_uint32(ip); // external ip
+		buffer.write_uint16(3074); // port
+		buffer.write_uint32(this->get_address()); // server ip
+		buffer.write_uint16(3074); // server port
+
+		this->send(endpoint, buffer.get_buffer());
+	}
+}