ultimatepp/tutorial/Network02/Network02.cpp

#include <Core/Core.h>

using namespace Upp;

constexpr int port = 8080;

void ProcessHttpRequest(TcpSocket& client)
{
	HttpHeader header;
	if(!header.Read(client)) {
		Cerr() << "Failed to read HttpHeader.\n";
		HttpResponse(client, false, HttpStatus::BAD_REQUEST);
		return;
	}

	auto path = header.GetURI();
	if(header.GetMethod() == "GET") {
		if(path == "/countries") {
			JsonArray ja;
			ja << "Czech Republic"
			   << "Indonesia"
			   << "Brazil"
			   << "France";
			
			auto code = HttpStatus::OK;
			HttpResponse(client, false, code, HttpStatus::ToString(code), "application/json",
			             ja.ToString());
			return;
		}
	}
	
	HttpResponse(client, false, HttpStatus::NOT_FOUND);
}

void RunServerLoop(TcpSocket& server)
{
	for(;;) {
		TcpSocket client;

		Cout() << "Waiting for incoming connection from the client...\n";
		if(!client.Accept(server)) {
			Cerr() << "Connection from the client not accepted.\n";
			continue;
		}

		ProcessHttpRequest(client);
	}
}

CONSOLE_APP_MAIN
{
	TcpSocket server;
	if(!server.Listen(port)) {
		Cerr() << "Cannot open server port for listening with error \"" << server.GetErrorDesc()
			   << "\".\n";
		return;
	}

	RunServerLoop(server);
}