http.cpp

while (sock->connected()) {
	auto b = co_await sock->recv();

	frg::string_view req{static_cast<char *>(b.data()), b.size()};
	size_t newl = req.find_first('\n');
	auto http_req = req.sub_string(0, newl);

	auto s1 = http_req.find_first(' ');
	auto s2 = http_req.find_last(' ');

	if (s1 == size_t(-1) || s2 == size_t(-1))
		continue;

	auto type = http_req.sub_string(0, s1);
	auto path = http_req.sub_string(s1 + 1, s2 - s1 - 1);

	lib::log("tart: got a http request!, type \"%.*s\", path \"%.*s\"\r\n", type.size(), type.data(), path.size(), path.data());

	frg::string_view resp;
	if (type != "GET")
		resp = "HTTP/1.1 400 Bad request\nServer: tart\nContent-Type: text/html\nContent-Length: 20\n\nBad request ...what?";
	if (path == "/" || path == "/index.html")
		resp = "HTTP/1.1 200 OK\nServer: tart\nContent-Type: text/html\nContent-Length: 101\n\nHello, world! This web page was served to you from <a href=\"https://github.com/qookei/tart\">tart</a>!";
	else if (path == "/other.html")
		resp = "HTTP/1.1 200 OK\nServer: tart\nContent-Type: text/html\nContent-Length: 80\n\nHello, world ...again! This is a different page. <a href=\"index.html\">Go back</a>";
	else
		resp = "HTTP/1.1 404 File not found\nServer: tart\nContent-Type: text/html\nContent-Length: 38\n\nI don't know what you're asking for...";

	co_await sock->send(const_cast<char *>(resp.data()), resp.size());
}
co_await sock->close();