ZMQ: use random port for internal use

src/zmq_reader.cpp

@@ -38,14 +38,13 @@ ZMQReader::ZMQReader(const std::string& address, uint32_t zmq_port, const std::s
 		m_proxy.clear();
 	}
 
-	for (uint32_t i = m_publisherPort; i < std::numeric_limits<uint16_t>::max(); ++i) {
+	std::random_device rd;
+	for (uint32_t port = 49152 + (rd() % 16384), i = 0; i < 100; ++i, port = (port < 65535) ? (port + 1) : 49152) {
 		try {
-			m_publisherPort = 0;
-
 			char addr[32];
-			snprintf(addr, sizeof(addr), "tcp://127.0.0.1:%u", i);
+			snprintf(addr, sizeof(addr), "tcp://127.0.0.1:%u", port);
 			m_publisher.bind(addr);
-			m_publisherPort = static_cast<uint16_t>(i);
+			m_publisherPort = static_cast<uint16_t>(port);
 			break;
 		}
 		catch (const std::exception& e) {

src/zmq_reader.h

@@ -45,7 +45,7 @@ private:
 	zmq::context_t m_context{ 1 };
 	zmq::socket_t m_publisher{ m_context, ZMQ_PUB };
 	zmq::socket_t m_subscriber{ m_context, ZMQ_SUB };
-	uint16_t m_publisherPort = 37891;
+	uint16_t m_publisherPort = 0;
 	std::atomic<bool> m_finished{ false };
 	std::atomic<bool> m_threadRunning{ false };