/* Copyright (C) 2017-2018 J.F.Dockes
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _STREAMPROXY_H_INCLUDED_
#define _STREAMPROXY_H_INCLUDED_
#include <memory>
#include <functional>
#include <string>
#include <unordered_map>
class NetFetch;
/// HTTP proxy for UPnP audio transfers
///
/// Uses microhttpd for the server part and libcurl for talking to the
/// real server.
///
class StreamProxy {
public:
/** The fetch method deciding function
* @param[in,out] url The original URL from the client, changed in place.
* @param queryparams The HTTP query parameters (?nm=value;..)
* @param[out] fetcher if we are proxying, the fetcher object used
* to get the data. Ownership is transferred to us.
* @return one of Error/Proxy/Redirect, dictating how the client request
* is to be satisfied (or not)
*/
enum UrlTransReturn {Error, Proxy, Redirect};
typedef std::function<UrlTransReturn
(std::string& url,
const std::unordered_map<std::string, std::string>& queryparams,
std::unique_ptr<NetFetch>& fetcher)> UrlTransFunc;
StreamProxy(int listenport, UrlTransFunc urltrans);
~StreamProxy();
// Debug and experiments: kill connections after ms mS
void setKillAfterMs(int ms);
class Internal;
private:
std::unique_ptr<Internal> m;
};
#endif /* _STREAMPROXY_H_INCLUDED_ */