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91 lines
3.5 KiB
C++
91 lines
3.5 KiB
C++
/*******************************************************************************
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* libretroshare/src/pqi: pqissludp.h *
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* *
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* libretroshare: retroshare core library *
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* *
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* Copyright (C) 2004-2006 Robert Fernie <retroshare@lunamutt.com> *
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* Copyright (C) 2015-2019 Gioacchino Mazzurco <gio@altermundi.net> *
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* *
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* This program is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU Lesser General Public License as *
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* published by the Free Software Foundation, either version 3 of the *
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* License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Lesser General Public License for more details. *
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* *
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* You should have received a copy of the GNU Lesser General Public License *
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* along with this program. If not, see <https://www.gnu.org/licenses/>. *
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* *
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*******************************************************************************/
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#pragma once
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#include <string>
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#include <map>
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#include "pqi/pqissl.h"
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#include "pqi/pqinetwork.h"
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#include "util/rsdebug.h"
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/**
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* @brief pqissludp is the special NAT traversal protocol.
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* This class will implement the basics of streaming ssl over udp using a
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* tcponudp library.
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* It provides a NetBinInterface, which is primarily inherited from pqissl.
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* Some methods are override all others are identical.
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*/
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class pqissludp: public pqissl
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{
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public:
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pqissludp(PQInterface *parent, p3LinkMgr *lm);
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~pqissludp() override;
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int listen() override { return 1; }
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int stoplistening() override { return 1; }
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virtual bool connect_parameter(uint32_t type, uint32_t value);
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virtual bool connect_additional_address(uint32_t type, const struct sockaddr_storage &addr);
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// BinInterface.
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// These are reimplemented.
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virtual bool moretoread(uint32_t usec);
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virtual bool cansend(uint32_t usec);
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/* UDP always through firewalls -> always bandwidth Limited */
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virtual bool bandwidthLimited() { return true; }
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protected:
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// pqissludp specific.
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// called to initiate a connection;
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int attach();
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virtual int reset_locked();
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virtual int Initiate_Connection();
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virtual int Basic_Connection_Complete();
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/* Do we really need this ?
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* It is very specific UDP+ToU+SSL stuff and unlikely to be reused.
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* In fact we are overloading them here becase they are very do different of pqissl.
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*/
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virtual int net_internal_close(int fd);
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virtual int net_internal_SSL_set_fd(SSL *ssl, int fd);
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virtual int net_internal_fcntl_nonblock(int /*fd*/) { return 0; }
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private:
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BIO *tou_bio; // specific to ssludp.
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uint32_t mConnectPeriod;
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uint32_t mConnectFlags;
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uint32_t mConnectBandwidth;
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struct sockaddr_storage mConnectProxyAddr;
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struct sockaddr_storage mConnectSrcAddr;
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RS_SET_CONTEXT_DEBUG_LEVEL(2)
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};
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