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// Copyright (c) 2009-2019 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_NETBASE_H
#define BITCOIN_NETBASE_H
#if defined(HAVE_CONFIG_H)
#include <config/bitcoin-config.h>
#endif
#include <compat.h>
#include <netaddress.h>
#include <serialize.h>
#include <util/sock.h>
#include <functional>
#include <memory>
#include <stdint.h>
#include <string>
#include <vector>
extern int nConnectTimeout;
extern bool fNameLookup;
//! -timeout default
static const int DEFAULT_CONNECT_TIMEOUT = 5000;
//! -dns default
static const int DEFAULT_NAME_LOOKUP = true;
class proxyType
{
public:
proxyType(): randomize_credentials(false) {}
explicit proxyType(const CService &_proxy, bool _randomize_credentials=false): proxy(_proxy), randomize_credentials(_randomize_credentials) {}
bool IsValid() const { return proxy.IsValid(); }
CService proxy;
bool randomize_credentials;
};
enum Network ParseNetwork(const std::string& net);
std::string GetNetworkName(enum Network net);
/** Return a vector of publicly routable Network names; optionally append NET_UNROUTABLE. */
std::vector<std::string> GetNetworkNames(bool append_unroutable = false);
bool SetProxy(enum Network net, const proxyType &addrProxy);
bool GetProxy(enum Network net, proxyType &proxyInfoOut);
bool IsProxy(const CNetAddr &addr);
bool SetNameProxy(const proxyType &addrProxy);
bool HaveNameProxy();
bool GetNameProxy(proxyType &nameProxyOut);
bool LookupHost(const std::string& name, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions, bool fAllowLookup);
bool LookupHost(const std::string& name, CNetAddr& addr, bool fAllowLookup);
bool Lookup(const std::string& name, CService& addr, int portDefault, bool fAllowLookup);
bool Lookup(const std::string& name, std::vector<CService>& vAddr, int portDefault, bool fAllowLookup, unsigned int nMaxSolutions);
CService LookupNumeric(const std::string& name, int portDefault = 0);
bool LookupSubNet(const std::string& strSubnet, CSubNet& subnet);
/**
* Create a TCP socket in the given address family.
* @param[in] address_family The socket is created in the same address family as this address.
* @return pointer to the created Sock object or unique_ptr that owns nothing in case of failure
*/
std::unique_ptr<Sock> CreateSockTCP(const CService& address_family);
/**
* Socket factory. Defaults to `CreateSockTCP()`, but can be overridden by unit tests.
*/
extern std::function<std::unique_ptr<Sock>(const CService&)> CreateSock;
bool ConnectSocketDirectly(const CService &addrConnect, const SOCKET& hSocketRet, int nTimeout, bool manual_connection);
bool ConnectThroughProxy(const proxyType& proxy, const std::string& strDest, int port, const Sock& sock, int nTimeout, bool& outProxyConnectionFailed);
/** Disable or enable blocking-mode for a socket */
bool SetSocketNonBlocking(const SOCKET& hSocket, bool fNonBlocking);
/** Set the TCP_NODELAY flag on a socket */
bool SetSocketNoDelay(const SOCKET& hSocket);
void InterruptSocks5(bool interrupt);
#endif // BITCOIN_NETBASE_H
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