else {

			host += "http://";

		}

		host += std::string(host_hdr->p, host_hdr->len);

	}

	Server:session *session = get_session(hm);

	mg_printf(conn, "HTTP/1.1 302 Found\r\n"

		"Set-Cookie: session=%s; max-age=0\r\n"

		"Set-Cookie: admin=%s; max-age=0\r\n"

		"Location: %s%s\r\n\r\n",

		session->session_id, session->admin ? "1" : "0", host.c_str(), CONFIG_STRING(m_config, "service.base_location").c_str());

	sessions.erase(session->session_id);

	delete session;

}

void Server::serve_oauth2(struct mg_connection *conn, struct http_message *hm) {

// 	http://slack.spectrum.im/oauth2/localhostxmpp?code=14830663267.19140123492.e7f78a836d&state=534ab3b6-8bf1-4974-8274-847df8490bc5

	std::string uri(hm->uri.p, hm->uri.len);

	std::string instance = uri.substr(uri.rfind("/") + 1);

	std::string code = get_http_var(hm, "code");

	std::string state = get_http_var(hm, "state");

	std::cerr << "set_oauth2_code response: '" << response << "'\n";

	if (response.find("Registered as ") == 0) {

		std::vector<std::string> args;

		boost::split(args, response, boost::is_any_of(" "));

		std::cerr << "set_oauth2_code response size " << args.size() << "\n";

		if (args.size() == 3) {

			Server:session *session = get_session(hm);

			UserInfo info;

			m_storage->getUser(session->user, info);

			std::string username = "";

			int type = (int) TYPE_STRING;

			m_storage->getUserSetting(info.id, instance, type, username);

			m_storage->updateUserSetting(info.id, instance, args[2]);

		}

	}

	redirect_to(conn, hm, "/instances/");

}

void Server::event_handler(struct mg_connection *conn, int ev, void *p) {

	struct http_message *hm = (struct http_message *) p;

	if (ev == MG_EV_SSI_CALL) {

		mbuf_resize(&conn->send_mbuf, conn->send_mbuf.size * 2);

		std::string resp(conn->send_mbuf.buf, conn->send_mbuf.len);