--- a/src/Configuration.h	Sun May 01 18:42:53 2022 +0200
+++ b/src/Configuration.h	Tue Jul 26 23:22:24 2022 +0200
@@ -30,7 +30,7 @@
 public:
 
 	relpipe::common::type::Integer messageCount = 1;
-	relpipe::common::type::StringX relation = L"socket";
+	relpipe::common::type::StringX relation = L"message";
 	relpipe::common::type::StringX queue = L"/relpipe";
 	relpipe::common::type::Boolean unlinkOnClose = false;
 

--- a/src/Socket.h	Sun May 01 18:42:53 2022 +0200
+++ b/src/Socket.h	Tue Jul 26 23:22:24 2022 +0200
@@ -16,10 +16,14 @@
  */
 #pragma once
 
-#include <mqueue.h>
 #include <string>
+#include <cstring>
+#include <unistd.h>
 #include <stdexcept>
-#include <cstring>
+#include <arpa/inet.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
 
 namespace relpipe {
 namespace in {
@@ -28,39 +32,36 @@
 class Socket {
 private:
 	const static size_t MSG_SIZE = 8192; // TODO: configurable/dynamic
-	std::string queueName;
-	mqd_t handle = -2;
-	bool unlinkOnClose = false;
-
-	Socket(std::string queueName, mqd_t handle, bool unlinkOnClose) : queueName(queueName), handle(handle), unlinkOnClose(unlinkOnClose) {
-	}
 
 public:
 
 	virtual ~Socket() {
-		if (handle >= 0) mq_close(handle);
-		if (unlinkOnClose) mq_unlink(queueName.c_str());
-	}
-
-	static Socket* open(std::string queueName, bool unlinkOnClose = false) {
-		mqd_t handle = mq_open(queueName.c_str(), O_RDONLY | O_CREAT, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
-		if (handle >= 0) return new Socket(queueName, handle, unlinkOnClose);
-		else throw std::logic_error("Unable to open Socket: " + queueName + " error: " + strerror(errno));
-	}
-
-	void send(std::string message) {
-		int result = mq_send(handle, message.c_str(), message.size(), 0);
-		if (result) throw std::logic_error("Unable to send message to" + queueName + " error: " + strerror(errno));
 	}
 
 	std::string receive() {
 		char buffer[MSG_SIZE + 1];
 		memset(buffer, 0, MSG_SIZE + 1);
-		ssize_t msgSize = mq_receive(handle, buffer, MSG_SIZE, nullptr);
+
+		int s = ::socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+
+		struct sockaddr_in a;
+		memset((char *) &a, 0, sizeof (a));
+		a.sin_family = AF_INET;
+		a.sin_addr.s_addr = inet_addr("127.0.0.1"); // TODO: use getaddrinfo() instead (because of error -1 = 255.255.255.255)
+		a.sin_port = htons(1234);
+		::bind(s, (sockaddr*) & a, sizeof (a));
+
+		struct sockaddr_in remoteAddress;
+		memset((char *) &remoteAddress, 0, sizeof (remoteAddress));
+		socklen_t remoteAddressSize = sizeof(remoteAddress);
+
+		ssize_t msgSize = recvfrom(s, buffer, sizeof (buffer), 0, (sockaddr*) & remoteAddress, &remoteAddressSize);
+
+		close(s);
 
 		if (msgSize > sizeof (buffer))throw std::logic_error("Invalid Socket message size.");
 		else if (msgSize >= 0) return std::string(buffer, msgSize);
-		else throw std::logic_error("Unable to receive Socket message from " + queueName + " error: " + strerror(errno));
+		else throw std::logic_error("Unable to receive Socket message the socket; error: " + std::string(strerror(errno)));
 	}
 
 };

--- a/src/SocketCommand.cpp	Sun May 01 18:42:53 2022 +0200
+++ b/src/SocketCommand.cpp	Tue Jul 26 23:22:24 2022 +0200
@@ -47,7 +47,7 @@
 void SocketCommand::process(std::shared_ptr<writer::RelationalWriter> writer, Configuration& configuration) {
 	vector<AttributeMetadata> metadata;
 
-	std::shared_ptr<Socket> mq(Socket::open(convertor.to_bytes(configuration.queue), configuration.unlinkOnClose));
+	std::shared_ptr<Socket> socket = std::make_shared<Socket>(); // TODO: create a TCP, UDP… socket
 
 	writer->startRelation(configuration.relation,{
 		{L"queue", TypeId::STRING},
@@ -57,7 +57,7 @@
 
 	for (int i = configuration.messageCount; continueProcessing && i > 0; i--) {
 		// TODO: maybe rather call mq_timedreceive() inside and check continueProcessing (to be able to stop even when no messages are comming)
-		std::string message = mq->receive();
+		std::string message = socket->receive();
 
 		writer->writeAttribute(configuration.queue);
 		writer->writeAttribute(Hex::toTxt(message));