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#pragma once
#include "../../plugin_interface.h"
#include <boost/asio.hpp>
#include <cstdint>
#include <mutex>
#include <set>
// TODO: multithreading
class FCGI_ID
{
std::set<uint16_t >m_unused;
uint16_t m_current_max{};
public:
FCGI_ID(){}
// starting at 1
uint16_t getID(){
if (m_unused.empty()) {
m_current_max++;
return m_current_max;
} else {
uint16_t result{*m_unused.begin()};
m_unused.erase(m_unused.begin());
return result;
}
}
void putID(uint16_t id){
m_unused.insert(id);
}
};
// automatically reserves ID, and releases it via RAII
class FCGI_ID_Guard
{
FCGI_ID& m_fcgi_id;
uint16_t m_id;
public:
FCGI_ID_Guard(FCGI_ID& fcgi_id): m_fcgi_id(fcgi_id), m_id(fcgi_id.getID())
{
}
~FCGI_ID_Guard()
{
m_fcgi_id.putID(m_id);
}
uint16_t getID() const { return m_id; }
};
struct FCGIContext;
class fcgi_plugin: public webserver_plugin_interface
{
FCGI_ID m_fcgi_id;
boost::asio::io_context m_io_context;
boost::asio::ip::tcp::resolver m_resolver;
std::mutex m_socket_mutex; // guard m_socket use in different threads
std::unordered_map<std::string, boost::asio::ip::tcp::socket> m_sockets;
public:
fcgi_plugin();
~fcgi_plugin();
std::string name();
std::string generate_page(
std::function<std::string(const std::string& key)>& GetServerParam,
std::function<std::string(const std::string& key)>& GetRequestParam, // request including body (POST...)
std::function<void(const std::string& key, const std::string& value)>& SetResponseHeader // to be added to result string
);
std::string fcgiQuery(FCGIContext& context);
};
extern "C" BOOST_SYMBOL_EXPORT fcgi_plugin webserver_plugin;
fcgi_plugin webserver_plugin;
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