chore(tcpclient): create sample

Net/samples/tcpclient/src/tcpclient.cpp

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+//
+// tcpclient.cpp
+//
+// This sample demonstrates the StreamSocket and SocketStream classes.
+//
+// Copyright (c) 2005-2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#include "Poco/Net/StreamSocket.h"
+#include "Poco/Net/SocketAddress.h"
+#include "Poco/Path.h"
+#include "Poco/Exception.h"
+#include <iostream>
+
+
+using Poco::Net::StreamSocket;
+using Poco::Net::SocketAddress;
+using Poco::Path;
+using Poco::Exception;
+
+
+int main(int argc, char** argv)
+{
+	if (argc != 3)
+	{
+		Path p(argv[0]);
+		std::cout << "usage: " << p.getBaseName() << " IP:PORT DATA" << std::endl;
+		std::cout << "       sends DATA to IP:PORT" << std::endl;
+		return 1;
+	}
+	std::string addr(argv[1]);
+	std::string str(argv[2]);
+
+	try
+	{
+		SocketAddress sa(addr);
+		StreamSocket sock(sa);
+
+		sock.sendBytes(str.data(), static_cast<int>(str.length()));
+	}
+	catch (Exception& exc)
+	{
+		std::cerr << exc.displayText() << std::endl;
+		return 1;
+	}
+
+	return 0;
+}