#include <Core/Core.h>

using namespace Upp;

CONSOLE_APP_MAIN
{
	TcpSocket server;
	if(!server.Listen(3214, 5)) {
		Cout() << "Unable to initialize server socket!\n";
		SetExitCode(1);
		return;
	}
	Cout() << "Waiting for requests..\n";
	TcpSocket s;
	if(s.Accept(server)) {
		while(!s.IsError()){
			String w = s.GetLine();
			Cout() << "Request: " << w << " from: " << s.GetPeerAddr() << '\n';
			if(w == "time")
				s.Put(AsString(GetSysTime()));
			else
				s.Put(AsString(3 * atoi(~w)));
			s.Put("\n");
		}
	}
	Cout() << "Stopping server..\n";
}

#include <Core/Core.h>

using namespace Upp;

CONSOLE_APP_MAIN
{
	TcpSocket s;
	if(!s.Connect(CommandLine().GetCount() ? CommandLine()[0] : "127.0.0.1", 3214)) {
		Cout() << "Unable to connect to server!\n";
		SetExitCode(1);
	}
	s.GlobalTimeout(1000);
	s.Put("time" + '\n');
	Cout() << s.GetLine() <<EOL;
	s.Put("hello" + '\n');
	Cout() << s.GetLine() <<EOL;
}

	for(;;) { <<----------
		TcpSocket s;
		if(s.Accept(server)) {
			String w = s.GetLine();
			Cout() << "Request: " << w << " from: " << s.GetPeerAddr() << '\n';
			if(w == "time")
				s.Put(AsString(GetSysTime()));
			else
				s.Put(AsString(3 * atoi(~w)));
			s.Put("\n");
		}
	}

Probleme is, when I connect to the server. Neither my first nor my second data is received by server. Instead I receive a Null string from server (probably when I destroy the client socket) (this behavior can be seen in the console screen)

//	s.Put("time" + '\n'); // << ------------ This won't work... Clang: warning: adding 'char' to a string does not append to the string [-Wstring-plus-int] (not the same thing what SocketClient does. It appends it to a Upp::String, using the relevant operator.)

        s.Put("time\n");            // << ------------ This works as expected.
	s.Put(String("time") + '\n'); // also works
	Cout() << s.GetLine() <<EOL;
	s.Put("hello\n");
	Cout() << s.GetLine() <<EOL;

if(!server.Listen(port, 1)) {
		LOG("Unable to initialize server socket on port " + AsString(port));
		return;
	}
	client.GlobalTimeout(1000);
	LOG("Waiting for webServer...");
	while(!Thread::IsShutdownThreads()){
		
		if(client.Accept(server)){
			LOG("WebServer connected");
			int emptyData = 0;
			while(!client.IsError()){
				Upp::String data = client.GetLine();
				if(!client.IsTimeout()){
					Upp::String sendingCmd = "";
					LOG("Receiving : " + data + " from: " + client.GetPeerAddr());
					sendingCmd = ProcessCommandNetwork(data);
					LOG("Sending: " + sendingCmd + " To: " + client.GetPeerAddr());
					sendingCmd += '\n';
					sendingCmd.Shrink();
					client.Put(sendingCmd);
				}else{
					client.ClearError();
				}
			}
			LOG("WebServer error: " + client.GetErrorDesc());
			client.Close();
			client.Clear();
			LOG("WebServer disconnected");
		}
	}
	LOG("Connection with webServer ended");