httpserver.h

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// Copyright (c) 2015 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#ifndef BITCOIN_HTTPSERVER_H
#define BITCOIN_HTTPSERVER_H

#include <string>
#include <stdint.h>
#include <boost/thread.hpp>
#include <boost/scoped_ptr.hpp>
#include <boost/function.hpp>

static const int DEFAULT_HTTP_THREADS=4;
static const int DEFAULT_HTTP_WORKQUEUE=16;
static const int DEFAULT_HTTP_SERVER_TIMEOUT=30;

struct evhttp_request;
struct event_base;
class CService;
class HTTPRequest;

bool InitHTTPServer();
bool StartHTTPServer();
void InterruptHTTPServer();
void StopHTTPServer();

typedef boost::function<void(HTTPRequest* req, const std::string &)> HTTPRequestHandler;
void RegisterHTTPHandler(const std::string &prefix, bool exactMatch, const HTTPRequestHandler &handler);
void UnregisterHTTPHandler(const std::string &prefix, bool exactMatch);

struct event_base* EventBase();

class HTTPRequest
{
private:
    struct evhttp_request* req;
    bool replySent;

public:
    HTTPRequest(struct evhttp_request* req);
    ~HTTPRequest();

    enum RequestMethod {
        UNKNOWN,
        GET,
        POST,
        HEAD,
        PUT
    };

    std::string GetURI();

    CService GetPeer();

    RequestMethod GetRequestMethod();

    std::pair<bool, std::string> GetHeader(const std::string& hdr);

    std::string ReadBody();

    void WriteHeader(const std::string& hdr, const std::string& value);

    void WriteReply(int nStatus, const std::string& strReply = "");
};

class HTTPClosure
{
public:
    virtual void operator()() = 0;
    virtual ~HTTPClosure() {}
};

class HTTPEvent
{
public:
    HTTPEvent(struct event_base* base, bool deleteWhenTriggered, const boost::function<void(void)>& handler);
    ~HTTPEvent();

    void trigger(struct timeval* tv);

    bool deleteWhenTriggered;
    boost::function<void(void)> handler;
private:
    struct event* ev;
};

#endif // BITCOIN_HTTPSERVER_H