diff -r 452d06d24ac2 -r ccaed729f8d3 src/ZeroMQHandler.h
--- a/src/ZeroMQHandler.h	Sun May 01 18:24:24 2022 +0200
+++ b/src/ZeroMQHandler.h	Sun May 01 22:27:42 2022 +0200
@@ -24,12 +24,13 @@
 #include <locale>
 #include <codecvt>
 
+#include <zmq.hpp>
+
 #include <relpipe/common/type/typedefs.h>
 #include <relpipe/reader/TypeId.h>
 #include <relpipe/reader/handlers/RelationalReaderStringHandler.h>
 #include <relpipe/reader/handlers/AttributeMetadata.h>
 
-#include "ZeroMQ.h"
 #include "Configuration.h"
 #include "Hex.h"
 
@@ -41,7 +42,8 @@
 private:
 	std::wstring_convert<codecvt_utf8<wchar_t>> convertor; // TODO: support also other encodings.
 	Configuration configuration;
-	shared_ptr<ZeroMQ> mq;
+	zmq::context_t zmqContext;
+	zmq::socket_t zmqSocket;
 
 	struct CurrentRelation {
 		relpipe::common::type::StringX name;
@@ -52,9 +54,8 @@
 
 public:
 
-	ZeroMQHandler(Configuration configuration) : configuration(configuration) {
-		// TODO: do not throw exception from the constructor: ZeroMQ::open()
-		mq.reset(ZeroMQ::open(convertor.to_bytes(configuration.queue), configuration.unlinkOnClose));
+	ZeroMQHandler(Configuration configuration) : configuration(configuration), zmqSocket(zmqContext, zmq::socket_type::push) {
+		zmqSocket.connect(convertor.to_bytes(configuration.endpointUrl));
 	}
 
 	void startRelation(relpipe::common::type::StringX name, std::vector<relpipe::reader::handlers::AttributeMetadata> attributes) override {
@@ -72,7 +73,7 @@
 		currentRelation.attributeIndex++;
 		if (currentRelation.attributeIndex == currentRelation.attributes.size()) {
 			currentRelation.attributeIndex = 0;
-			mq->send(currentRelation.currentValue);
+			zmqSocket.send(currentRelation.currentValue.c_str(), currentRelation.currentValue.size(), 0); // FIXME: check return value
 		}
 
 	}