No OneTemporary
Actions

Size

43 KB

Subscribers

None

View Options

	diff --git a/src/netbase.cpp b/src/netbase.cpp
	index b7e2e5791..259e5c14a 100644
	--- a/src/netbase.cpp
	+++ b/src/netbase.cpp
	@@ -1,1422 +1,1422 @@
	// Copyright (c) 2009-2010 Satoshi Nakamoto
	// Copyright (c) 2009-2014 The Bitcoin Core developers
	// Distributed under the MIT software license, see the accompanying
	// file COPYING or http://www.opensource.org/licenses/mit-license.php.

	#ifdef HAVE_CONFIG_H
	#include "config/bitcoin-config.h"
	#endif

	#include "netbase.h"

	#include "hash.h"
	#include "sync.h"
	#include "uint256.h"
	#include "random.h"
	#include "util.h"
	#include "utilstrencodings.h"

	#ifdef HAVE_GETADDRINFO_A
	#include <netdb.h>
	#endif

	#ifndef WIN32
	#if HAVE_INET_PTON
	#include <arpa/inet.h>
	#endif
	#include <fcntl.h>
	#endif

	#include <boost/algorithm/string/case_conv.hpp> // for to_lower()
	#include <boost/algorithm/string/predicate.hpp> // for startswith() and endswith()
	#include <boost/thread.hpp>

	#if !defined(HAVE_MSG_NOSIGNAL) && !defined(MSG_NOSIGNAL)
	#define MSG_NOSIGNAL 0
	#endif

	// Settings
	static proxyType proxyInfo[NET_MAX];
	static proxyType nameProxy;
	static CCriticalSection cs_proxyInfos;
	int nConnectTimeout = DEFAULT_CONNECT_TIMEOUT;
	bool fNameLookup = false;

	static const unsigned char pchIPv4[12] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff };

	// Need ample time for negotiation for very slow proxies such as Tor (milliseconds)
	static const int SOCKS5_RECV_TIMEOUT = 20 * 1000;

	enum Network ParseNetwork(std::string net) {
	boost::to_lower(net);
	if (net == "ipv4") return NET_IPV4;
	if (net == "ipv6") return NET_IPV6;
	if (net == "tor" \|\| net == "onion") return NET_TOR;
	return NET_UNROUTABLE;
	}

	std::string GetNetworkName(enum Network net) {
	switch(net)
	{
	case NET_IPV4: return "ipv4";
	case NET_IPV6: return "ipv6";
	case NET_TOR: return "onion";
	default: return "";
	}
	}

	void SplitHostPort(std::string in, int &portOut, std::string &hostOut) {
	size_t colon = in.find_last_of(':');
	// if a : is found, and it either follows a [...], or no other : is in the string, treat it as port separator
	bool fHaveColon = colon != in.npos;
	bool fBracketed = fHaveColon && (in[0]=='[' && in[colon-1]==']'); // if there is a colon, and in[0]=='[', colon is not 0, so in[colon-1] is safe
	bool fMultiColon = fHaveColon && (in.find_last_of(':',colon-1) != in.npos);
	if (fHaveColon && (colon==0 \|\| fBracketed \|\| !fMultiColon)) {
	int32_t n;
	if (ParseInt32(in.substr(colon + 1), &n) && n > 0 && n < 0x10000) {
	in = in.substr(0, colon);
	portOut = n;
	}
	}
	if (in.size()>0 && in[0] == '[' && in[in.size()-1] == ']')
	hostOut = in.substr(1, in.size()-2);
	else
	hostOut = in;
	}

	bool static LookupIntern(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions, bool fAllowLookup)
	{
	vIP.clear();

	{
	CNetAddr addr;
	if (addr.SetSpecial(std::string(pszName))) {
	vIP.push_back(addr);
	return true;
	}
	}

	#ifdef HAVE_GETADDRINFO_A
	struct in_addr ipv4_addr;
	#ifdef HAVE_INET_PTON
	if (inet_pton(AF_INET, pszName, &ipv4_addr) > 0) {
	vIP.push_back(CNetAddr(ipv4_addr));
	return true;
	}

	struct in6_addr ipv6_addr;
	if (inet_pton(AF_INET6, pszName, &ipv6_addr) > 0) {
	vIP.push_back(CNetAddr(ipv6_addr));
	return true;
	}
	#else
	ipv4_addr.s_addr = inet_addr(pszName);
	if (ipv4_addr.s_addr != INADDR_NONE) {
	vIP.push_back(CNetAddr(ipv4_addr));
	return true;
	}
	#endif
	#endif

	struct addrinfo aiHint;
	memset(&aiHint, 0, sizeof(struct addrinfo));
	aiHint.ai_socktype = SOCK_STREAM;
	aiHint.ai_protocol = IPPROTO_TCP;
	aiHint.ai_family = AF_UNSPEC;
	#ifdef WIN32
	aiHint.ai_flags = fAllowLookup ? 0 : AI_NUMERICHOST;
	#else
	aiHint.ai_flags = fAllowLookup ? AI_ADDRCONFIG : AI_NUMERICHOST;
	#endif

	struct addrinfo *aiRes = NULL;
	#ifdef HAVE_GETADDRINFO_A
	struct gaicb gcb, *query = &gcb;
	memset(query, 0, sizeof(struct gaicb));
	gcb.ar_name = pszName;
	gcb.ar_request = &aiHint;
	int nErr = getaddrinfo_a(GAI_NOWAIT, &query, 1, NULL);
	if (nErr)
	return false;

	do {
	// Should set the timeout limit to a resonable value to avoid
	// generating unnecessary checking call during the polling loop,
	// while it can still response to stop request quick enough.
	// 2 seconds looks fine in our situation.
	struct timespec ts = { 2, 0 };
	gai_suspend(&query, 1, &ts);
	boost::this_thread::interruption_point();

	nErr = gai_error(query);
	if (0 == nErr)
	aiRes = query->ar_result;
	} while (nErr == EAI_INPROGRESS);
	#else
	int nErr = getaddrinfo(pszName, NULL, &aiHint, &aiRes);
	#endif
	if (nErr)
	return false;

	struct addrinfo *aiTrav = aiRes;
	while (aiTrav != NULL && (nMaxSolutions == 0 \|\| vIP.size() < nMaxSolutions))
	{
	if (aiTrav->ai_family == AF_INET)
	{
	assert(aiTrav->ai_addrlen >= sizeof(sockaddr_in));
	vIP.push_back(CNetAddr(((struct sockaddr_in*)(aiTrav->ai_addr))->sin_addr));
	}

	if (aiTrav->ai_family == AF_INET6)
	{
	assert(aiTrav->ai_addrlen >= sizeof(sockaddr_in6));
	vIP.push_back(CNetAddr(((struct sockaddr_in6*)(aiTrav->ai_addr))->sin6_addr));
	}

	aiTrav = aiTrav->ai_next;
	}

	freeaddrinfo(aiRes);

	return (vIP.size() > 0);
	}

	bool LookupHost(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions, bool fAllowLookup)
	{
	std::string strHost(pszName);
	if (strHost.empty())
	return false;
	if (boost::algorithm::starts_with(strHost, "[") && boost::algorithm::ends_with(strHost, "]"))
	{
	strHost = strHost.substr(1, strHost.size() - 2);
	}

	return LookupIntern(strHost.c_str(), vIP, nMaxSolutions, fAllowLookup);
	}

	bool Lookup(const char *pszName, std::vector<CService>& vAddr, int portDefault, bool fAllowLookup, unsigned int nMaxSolutions)
	{
	if (pszName[0] == 0)
	return false;
	int port = portDefault;
	std::string hostname = "";
	SplitHostPort(std::string(pszName), port, hostname);

	std::vector<CNetAddr> vIP;
	bool fRet = LookupIntern(hostname.c_str(), vIP, nMaxSolutions, fAllowLookup);
	if (!fRet)
	return false;
	vAddr.resize(vIP.size());
	for (unsigned int i = 0; i < vIP.size(); i++)
	vAddr[i] = CService(vIP[i], port);
	return true;
	}

	bool Lookup(const char *pszName, CService& addr, int portDefault, bool fAllowLookup)
	{
	std::vector<CService> vService;
	bool fRet = Lookup(pszName, vService, portDefault, fAllowLookup, 1);
	if (!fRet)
	return false;
	addr = vService[0];
	return true;
	}

	bool LookupNumeric(const char *pszName, CService& addr, int portDefault)
	{
	return Lookup(pszName, addr, portDefault, false);
	}

	/**
	* Convert milliseconds to a struct timeval for select.
	*/
	struct timeval static MillisToTimeval(int64_t nTimeout)
	{
	struct timeval timeout;
	timeout.tv_sec = nTimeout / 1000;
	timeout.tv_usec = (nTimeout % 1000) * 1000;
	return timeout;
	}

	/**
	* Read bytes from socket. This will either read the full number of bytes requested
	* or return False on error or timeout.
	* This function can be interrupted by boost thread interrupt.
	*
	* @param data Buffer to receive into
	* @param len Length of data to receive
	* @param timeout Timeout in milliseconds for receive operation
	*
	* @note This function requires that hSocket is in non-blocking mode.
	*/
	bool static InterruptibleRecv(char* data, size_t len, int timeout, SOCKET& hSocket)
	{
	int64_t curTime = GetTimeMillis();
	int64_t endTime = curTime + timeout;
	// Maximum time to wait in one select call. It will take up until this time (in millis)
	// to break off in case of an interruption.
	const int64_t maxWait = 1000;
	while (len > 0 && curTime < endTime) {
	ssize_t ret = recv(hSocket, data, len, 0); // Optimistically try the recv first
	if (ret > 0) {
	len -= ret;
	data += ret;
	} else if (ret == 0) { // Unexpected disconnection
	return false;
	} else { // Other error or blocking
	int nErr = WSAGetLastError();
	if (nErr == WSAEINPROGRESS \|\| nErr == WSAEWOULDBLOCK \|\| nErr == WSAEINVAL) {
	if (!IsSelectableSocket(hSocket)) {
	return false;
	}
	struct timeval tval = MillisToTimeval(std::min(endTime - curTime, maxWait));
	fd_set fdset;
	FD_ZERO(&fdset);
	FD_SET(hSocket, &fdset);
	int nRet = select(hSocket + 1, &fdset, NULL, NULL, &tval);
	if (nRet == SOCKET_ERROR) {
	return false;
	}
	} else {
	return false;
	}
	}
	boost::this_thread::interruption_point();
	curTime = GetTimeMillis();
	}
	return len == 0;
	}

	struct ProxyCredentials
	{
	std::string username;
	std::string password;
	};

	/** Connect using SOCKS5 (as described in RFC1928) */
	static bool Socks5(const std::string& strDest, int port, const ProxyCredentials *auth, SOCKET& hSocket)
	{
	LogPrintf("SOCKS5 connecting %s\n", strDest);
	if (strDest.size() > 255) {
	CloseSocket(hSocket);
	return error("Hostname too long");
	}
	// Accepted authentication methods
	std::vector<uint8_t> vSocks5Init;
	vSocks5Init.push_back(0x05);
	if (auth) {
	vSocks5Init.push_back(0x02); // # METHODS
	vSocks5Init.push_back(0x00); // X'00' NO AUTHENTICATION REQUIRED
	vSocks5Init.push_back(0x02); // X'02' USERNAME/PASSWORD (RFC1929)
	} else {
	vSocks5Init.push_back(0x01); // # METHODS
	vSocks5Init.push_back(0x00); // X'00' NO AUTHENTICATION REQUIRED
	}
	ssize_t ret = send(hSocket, (const char*)begin_ptr(vSocks5Init), vSocks5Init.size(), MSG_NOSIGNAL);
	if (ret != (ssize_t)vSocks5Init.size()) {
	CloseSocket(hSocket);
	return error("Error sending to proxy");
	}
	char pchRet1[2];
	if (!InterruptibleRecv(pchRet1, 2, SOCKS5_RECV_TIMEOUT, hSocket)) {
	CloseSocket(hSocket);
	return error("Error reading proxy response");
	}
	if (pchRet1[0] != 0x05) {
	CloseSocket(hSocket);
	return error("Proxy failed to initialize");
	}
	if (pchRet1[1] == 0x02 && auth) {
	// Perform username/password authentication (as described in RFC1929)
	std::vector<uint8_t> vAuth;
	vAuth.push_back(0x01);
	if (auth->username.size() > 255 \|\| auth->password.size() > 255)
	return error("Proxy username or password too long");
	vAuth.push_back(auth->username.size());
	vAuth.insert(vAuth.end(), auth->username.begin(), auth->username.end());
	vAuth.push_back(auth->password.size());
	vAuth.insert(vAuth.end(), auth->password.begin(), auth->password.end());
	ret = send(hSocket, (const char*)begin_ptr(vAuth), vAuth.size(), MSG_NOSIGNAL);
	if (ret != (ssize_t)vAuth.size()) {
	CloseSocket(hSocket);
	return error("Error sending authentication to proxy");
	}
	LogPrint("proxy", "SOCKS5 sending proxy authentication %s:%s\n", auth->username, auth->password);
	char pchRetA[2];
	if (!InterruptibleRecv(pchRetA, 2, SOCKS5_RECV_TIMEOUT, hSocket)) {
	CloseSocket(hSocket);
	return error("Error reading proxy authentication response");
	}
	if (pchRetA[0] != 0x01 \|\| pchRetA[1] != 0x00) {
	CloseSocket(hSocket);
	return error("Proxy authentication unsuccesful");
	}
	} else if (pchRet1[1] == 0x00) {
	// Perform no authentication
	} else {
	CloseSocket(hSocket);
	return error("Proxy requested wrong authentication method %02x", pchRet1[1]);
	}
	std::vector<uint8_t> vSocks5;
	vSocks5.push_back(0x05); // VER protocol version
	vSocks5.push_back(0x01); // CMD CONNECT
	vSocks5.push_back(0x00); // RSV Reserved
	vSocks5.push_back(0x03); // ATYP DOMAINNAME
	vSocks5.push_back(strDest.size()); // Length<=255 is checked at beginning of function
	vSocks5.insert(vSocks5.end(), strDest.begin(), strDest.end());
	vSocks5.push_back((port >> 8) & 0xFF);
	vSocks5.push_back((port >> 0) & 0xFF);
	ret = send(hSocket, (const char*)begin_ptr(vSocks5), vSocks5.size(), MSG_NOSIGNAL);
	if (ret != (ssize_t)vSocks5.size()) {
	CloseSocket(hSocket);
	return error("Error sending to proxy");
	}
	char pchRet2[4];
	if (!InterruptibleRecv(pchRet2, 4, SOCKS5_RECV_TIMEOUT, hSocket)) {
	CloseSocket(hSocket);
	return error("Error reading proxy response");
	}
	if (pchRet2[0] != 0x05) {
	CloseSocket(hSocket);
	return error("Proxy failed to accept request");
	}
	if (pchRet2[1] != 0x00) {
	CloseSocket(hSocket);
	switch (pchRet2[1])
	{
	case 0x01: return error("Proxy error: general failure");
	case 0x02: return error("Proxy error: connection not allowed");
	case 0x03: return error("Proxy error: network unreachable");
	case 0x04: return error("Proxy error: host unreachable");
	case 0x05: return error("Proxy error: connection refused");
	case 0x06: return error("Proxy error: TTL expired");
	case 0x07: return error("Proxy error: protocol error");
	case 0x08: return error("Proxy error: address type not supported");
	default: return error("Proxy error: unknown");
	}
	}
	if (pchRet2[2] != 0x00) {
	CloseSocket(hSocket);
	return error("Error: malformed proxy response");
	}
	char pchRet3[256];
	switch (pchRet2[3])
	{
	case 0x01: ret = InterruptibleRecv(pchRet3, 4, SOCKS5_RECV_TIMEOUT, hSocket); break;
	case 0x04: ret = InterruptibleRecv(pchRet3, 16, SOCKS5_RECV_TIMEOUT, hSocket); break;
	case 0x03:
	{
	ret = InterruptibleRecv(pchRet3, 1, SOCKS5_RECV_TIMEOUT, hSocket);
	if (!ret) {
	CloseSocket(hSocket);
	return error("Error reading from proxy");
	}
	int nRecv = pchRet3[0];
	ret = InterruptibleRecv(pchRet3, nRecv, SOCKS5_RECV_TIMEOUT, hSocket);
	break;
	}
	default: CloseSocket(hSocket); return error("Error: malformed proxy response");
	}
	if (!ret) {
	CloseSocket(hSocket);
	return error("Error reading from proxy");
	}
	if (!InterruptibleRecv(pchRet3, 2, SOCKS5_RECV_TIMEOUT, hSocket)) {
	CloseSocket(hSocket);
	return error("Error reading from proxy");
	}
	LogPrintf("SOCKS5 connected %s\n", strDest);
	return true;
	}

	bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRet, int nTimeout)
	{
	hSocketRet = INVALID_SOCKET;

	struct sockaddr_storage sockaddr;
	socklen_t len = sizeof(sockaddr);
	if (!addrConnect.GetSockAddr((struct sockaddr*)&sockaddr, &len)) {
	LogPrintf("Cannot connect to %s: unsupported network\n", addrConnect.ToString());
	return false;
	}

	SOCKET hSocket = socket(((struct sockaddr*)&sockaddr)->sa_family, SOCK_STREAM, IPPROTO_TCP);
	if (hSocket == INVALID_SOCKET)
	return false;

	#ifdef SO_NOSIGPIPE
	int set = 1;
	// Different way of disabling SIGPIPE on BSD
	setsockopt(hSocket, SOL_SOCKET, SO_NOSIGPIPE, (void*)&set, sizeof(int));
	#endif

	// Set to non-blocking
	if (!SetSocketNonBlocking(hSocket, true))
	return error("ConnectSocketDirectly: Setting socket to non-blocking failed, error %s\n", NetworkErrorString(WSAGetLastError()));

	if (connect(hSocket, (struct sockaddr*)&sockaddr, len) == SOCKET_ERROR)
	{
	int nErr = WSAGetLastError();
	// WSAEINVAL is here because some legacy version of winsock uses it
	if (nErr == WSAEINPROGRESS \|\| nErr == WSAEWOULDBLOCK \|\| nErr == WSAEINVAL)
	{
	struct timeval timeout = MillisToTimeval(nTimeout);
	fd_set fdset;
	FD_ZERO(&fdset);
	FD_SET(hSocket, &fdset);
	int nRet = select(hSocket + 1, NULL, &fdset, NULL, &timeout);
	if (nRet == 0)
	{
	LogPrint("net", "connection to %s timeout\n", addrConnect.ToString());
	CloseSocket(hSocket);
	return false;
	}
	if (nRet == SOCKET_ERROR)
	{
	LogPrintf("select() for %s failed: %s\n", addrConnect.ToString(), NetworkErrorString(WSAGetLastError()));
	CloseSocket(hSocket);
	return false;
	}
	socklen_t nRetSize = sizeof(nRet);
	#ifdef WIN32
	if (getsockopt(hSocket, SOL_SOCKET, SO_ERROR, (char*)(&nRet), &nRetSize) == SOCKET_ERROR)
	#else
	if (getsockopt(hSocket, SOL_SOCKET, SO_ERROR, &nRet, &nRetSize) == SOCKET_ERROR)
	#endif
	{
	LogPrintf("getsockopt() for %s failed: %s\n", addrConnect.ToString(), NetworkErrorString(WSAGetLastError()));
	CloseSocket(hSocket);
	return false;
	}
	if (nRet != 0)
	{
	LogPrintf("connect() to %s failed after select(): %s\n", addrConnect.ToString(), NetworkErrorString(nRet));
	CloseSocket(hSocket);
	return false;
	}
	}
	#ifdef WIN32
	else if (WSAGetLastError() != WSAEISCONN)
	#else
	else
	#endif
	{
	LogPrintf("connect() to %s failed: %s\n", addrConnect.ToString(), NetworkErrorString(WSAGetLastError()));
	CloseSocket(hSocket);
	return false;
	}
	}

	hSocketRet = hSocket;
	return true;
	}

	bool SetProxy(enum Network net, const proxyType &addrProxy) {
	assert(net >= 0 && net < NET_MAX);
	if (!addrProxy.IsValid())
	return false;
	LOCK(cs_proxyInfos);
	proxyInfo[net] = addrProxy;
	return true;
	}

	bool GetProxy(enum Network net, proxyType &proxyInfoOut) {
	assert(net >= 0 && net < NET_MAX);
	LOCK(cs_proxyInfos);
	if (!proxyInfo[net].IsValid())
	return false;
	proxyInfoOut = proxyInfo[net];
	return true;
	}

	bool SetNameProxy(const proxyType &addrProxy) {
	if (!addrProxy.IsValid())
	return false;
	LOCK(cs_proxyInfos);
	nameProxy = addrProxy;
	return true;
	}

	bool GetNameProxy(proxyType &nameProxyOut) {
	LOCK(cs_proxyInfos);
	if(!nameProxy.IsValid())
	return false;
	nameProxyOut = nameProxy;
	return true;
	}

	bool HaveNameProxy() {
	LOCK(cs_proxyInfos);
	return nameProxy.IsValid();
	}

	bool IsProxy(const CNetAddr &addr) {
	LOCK(cs_proxyInfos);
	for (int i = 0; i < NET_MAX; i++) {
	if (addr == (CNetAddr)proxyInfo[i].proxy)
	return true;
	}
	return false;
	}

	static bool ConnectThroughProxy(const proxyType &proxy, const std::string& strDest, int port, SOCKET& hSocketRet, int nTimeout, bool *outProxyConnectionFailed)
	{
	SOCKET hSocket = INVALID_SOCKET;
	// first connect to proxy server
	if (!ConnectSocketDirectly(proxy.proxy, hSocket, nTimeout)) {
	if (outProxyConnectionFailed)
	*outProxyConnectionFailed = true;
	return false;
	}
	// do socks negotiation
	if (proxy.randomize_credentials) {
	ProxyCredentials random_auth;
	random_auth.username = strprintf("%i", insecure_rand());
	random_auth.password = strprintf("%i", insecure_rand());
	if (!Socks5(strDest, (unsigned short)port, &random_auth, hSocket))
	return false;
	} else {
	if (!Socks5(strDest, (unsigned short)port, 0, hSocket))
	return false;
	}

	hSocketRet = hSocket;
	return true;
	}

	bool ConnectSocket(const CService &addrDest, SOCKET& hSocketRet, int nTimeout, bool *outProxyConnectionFailed)
	{
	proxyType proxy;
	if (outProxyConnectionFailed)
	*outProxyConnectionFailed = false;

	if (GetProxy(addrDest.GetNetwork(), proxy))
	return ConnectThroughProxy(proxy, addrDest.ToStringIP(), addrDest.GetPort(), hSocketRet, nTimeout, outProxyConnectionFailed);
	else // no proxy needed (none set for target network)
	return ConnectSocketDirectly(addrDest, hSocketRet, nTimeout);
	}

	bool ConnectSocketByName(CService &addr, SOCKET& hSocketRet, const char pszDest, int portDefault, int nTimeout, bool outProxyConnectionFailed)
	{
	std::string strDest;
	int port = portDefault;

	if (outProxyConnectionFailed)
	*outProxyConnectionFailed = false;

	SplitHostPort(std::string(pszDest), port, strDest);

	proxyType nameProxy;
	GetNameProxy(nameProxy);

	CService addrResolved(CNetAddr(strDest, fNameLookup && !HaveNameProxy()), port);
	if (addrResolved.IsValid()) {
	addr = addrResolved;
	return ConnectSocket(addr, hSocketRet, nTimeout);
	}

	addr = CService("0.0.0.0:0");

	if (!HaveNameProxy())
	return false;
	return ConnectThroughProxy(nameProxy, strDest, port, hSocketRet, nTimeout, outProxyConnectionFailed);
	}

	void CNetAddr::Init()
	{
	memset(ip, 0, sizeof(ip));
	}

	void CNetAddr::SetIP(const CNetAddr& ipIn)
	{
	memcpy(ip, ipIn.ip, sizeof(ip));
	}

	void CNetAddr::SetRaw(Network network, const uint8_t *ip_in)
	{
	switch(network)
	{
	case NET_IPV4:
	memcpy(ip, pchIPv4, 12);
	memcpy(ip+12, ip_in, 4);
	break;
	case NET_IPV6:
	memcpy(ip, ip_in, 16);
	break;
	default:
	assert(!"invalid network");
	}
	}

	static const unsigned char pchOnionCat[] = {0xFD,0x87,0xD8,0x7E,0xEB,0x43};

	bool CNetAddr::SetSpecial(const std::string &strName)
	{
	if (strName.size()>6 && strName.substr(strName.size() - 6, 6) == ".onion") {
	std::vector<unsigned char> vchAddr = DecodeBase32(strName.substr(0, strName.size() - 6).c_str());
	if (vchAddr.size() != 16-sizeof(pchOnionCat))
	return false;
	memcpy(ip, pchOnionCat, sizeof(pchOnionCat));
	for (unsigned int i=0; i<16-sizeof(pchOnionCat); i++)
	ip[i + sizeof(pchOnionCat)] = vchAddr[i];
	return true;
	}
	return false;
	}

	CNetAddr::CNetAddr()
	{
	Init();
	}

	CNetAddr::CNetAddr(const struct in_addr& ipv4Addr)
	{
	SetRaw(NET_IPV4, (const uint8_t*)&ipv4Addr);
	}

	CNetAddr::CNetAddr(const struct in6_addr& ipv6Addr)
	{
	SetRaw(NET_IPV6, (const uint8_t*)&ipv6Addr);
	}

	CNetAddr::CNetAddr(const char *pszIp, bool fAllowLookup)
	{
	Init();
	std::vector<CNetAddr> vIP;
	if (LookupHost(pszIp, vIP, 1, fAllowLookup))
	*this = vIP[0];
	}

	CNetAddr::CNetAddr(const std::string &strIp, bool fAllowLookup)
	{
	Init();
	std::vector<CNetAddr> vIP;
	if (LookupHost(strIp.c_str(), vIP, 1, fAllowLookup))
	*this = vIP[0];
	}

	unsigned int CNetAddr::GetByte(int n) const
	{
	return ip[15-n];
	}

	bool CNetAddr::IsIPv4() const
	{
	return (memcmp(ip, pchIPv4, sizeof(pchIPv4)) == 0);
	}

	bool CNetAddr::IsIPv6() const
	{
	return (!IsIPv4() && !IsTor());
	}

	bool CNetAddr::IsRFC1918() const
	{
	return IsIPv4() && (
	GetByte(3) == 10 \|\|
	(GetByte(3) == 192 && GetByte(2) == 168) \|\|
	(GetByte(3) == 172 && (GetByte(2) >= 16 && GetByte(2) <= 31)));
	}

	bool CNetAddr::IsRFC2544() const
	{
	return IsIPv4() && GetByte(3) == 198 && (GetByte(2) == 18 \|\| GetByte(2) == 19);
	}

	bool CNetAddr::IsRFC3927() const
	{
	return IsIPv4() && (GetByte(3) == 169 && GetByte(2) == 254);
	}

	bool CNetAddr::IsRFC6598() const
	{
	return IsIPv4() && GetByte(3) == 100 && GetByte(2) >= 64 && GetByte(2) <= 127;
	}

	bool CNetAddr::IsRFC5737() const
	{
	return IsIPv4() && ((GetByte(3) == 192 && GetByte(2) == 0 && GetByte(1) == 2) \|\|
	(GetByte(3) == 198 && GetByte(2) == 51 && GetByte(1) == 100) \|\|
	(GetByte(3) == 203 && GetByte(2) == 0 && GetByte(1) == 113));
	}

	bool CNetAddr::IsRFC3849() const
	{
	return GetByte(15) == 0x20 && GetByte(14) == 0x01 && GetByte(13) == 0x0D && GetByte(12) == 0xB8;
	}

	bool CNetAddr::IsRFC3964() const
	{
	return (GetByte(15) == 0x20 && GetByte(14) == 0x02);
	}

	bool CNetAddr::IsRFC6052() const
	{
	static const unsigned char pchRFC6052[] = {0,0x64,0xFF,0x9B,0,0,0,0,0,0,0,0};
	return (memcmp(ip, pchRFC6052, sizeof(pchRFC6052)) == 0);
	}

	bool CNetAddr::IsRFC4380() const
	{
	return (GetByte(15) == 0x20 && GetByte(14) == 0x01 && GetByte(13) == 0 && GetByte(12) == 0);
	}

	bool CNetAddr::IsRFC4862() const
	{
	static const unsigned char pchRFC4862[] = {0xFE,0x80,0,0,0,0,0,0};
	return (memcmp(ip, pchRFC4862, sizeof(pchRFC4862)) == 0);
	}

	bool CNetAddr::IsRFC4193() const
	{
	return ((GetByte(15) & 0xFE) == 0xFC);
	}

	bool CNetAddr::IsRFC6145() const
	{
	static const unsigned char pchRFC6145[] = {0,0,0,0,0,0,0,0,0xFF,0xFF,0,0};
	return (memcmp(ip, pchRFC6145, sizeof(pchRFC6145)) == 0);
	}

	bool CNetAddr::IsRFC4843() const
	{
	return (GetByte(15) == 0x20 && GetByte(14) == 0x01 && GetByte(13) == 0x00 && (GetByte(12) & 0xF0) == 0x10);
	}

	bool CNetAddr::IsTor() const
	{
	return (memcmp(ip, pchOnionCat, sizeof(pchOnionCat)) == 0);
	}

	bool CNetAddr::IsLocal() const
	{
	// IPv4 loopback
	if (IsIPv4() && (GetByte(3) == 127 \|\| GetByte(3) == 0))
	return true;

	// IPv6 loopback (::1/128)
	static const unsigned char pchLocal[16] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1};
	if (memcmp(ip, pchLocal, 16) == 0)
	return true;

	return false;
	}

	bool CNetAddr::IsMulticast() const
	{
	return (IsIPv4() && (GetByte(3) & 0xF0) == 0xE0)
	\|\| (GetByte(15) == 0xFF);
	}

	bool CNetAddr::IsValid() const
	{
	// Cleanup 3-byte shifted addresses caused by garbage in size field
	// of addr messages from versions before 0.2.9 checksum.
	// Two consecutive addr messages look like this:
	// header20 vectorlen3 addr26 addr26 addr26 header20 vectorlen3 addr26 addr26 addr26...
	// so if the first length field is garbled, it reads the second batch
	// of addr misaligned by 3 bytes.
	if (memcmp(ip, pchIPv4+3, sizeof(pchIPv4)-3) == 0)
	return false;

	// unspecified IPv6 address (::/128)
	unsigned char ipNone[16] = {};
	if (memcmp(ip, ipNone, 16) == 0)
	return false;

	// documentation IPv6 address
	if (IsRFC3849())
	return false;

	if (IsIPv4())
	{
	// INADDR_NONE
	uint32_t ipNone = INADDR_NONE;
	if (memcmp(ip+12, &ipNone, 4) == 0)
	return false;

	// 0
	ipNone = 0;
	if (memcmp(ip+12, &ipNone, 4) == 0)
	return false;
	}

	return true;
	}

	bool CNetAddr::IsRoutable() const
	{
	return IsValid() && !(IsRFC1918() \|\| IsRFC2544() \|\| IsRFC3927() \|\| IsRFC4862() \|\| IsRFC6598() \|\| IsRFC5737() \|\| (IsRFC4193() && !IsTor()) \|\| IsRFC4843() \|\| IsLocal());
	}

	enum Network CNetAddr::GetNetwork() const
	{
	if (!IsRoutable())
	return NET_UNROUTABLE;

	if (IsIPv4())
	return NET_IPV4;

	if (IsTor())
	return NET_TOR;

	return NET_IPV6;
	}

	std::string CNetAddr::ToStringIP() const
	{
	if (IsTor())
	return EncodeBase32(&ip[6], 10) + ".onion";
	CService serv(*this, 0);
	struct sockaddr_storage sockaddr;
	socklen_t socklen = sizeof(sockaddr);
	if (serv.GetSockAddr((struct sockaddr*)&sockaddr, &socklen)) {
	char name[1025] = "";
	if (!getnameinfo((const struct sockaddr*)&sockaddr, socklen, name, sizeof(name), NULL, 0, NI_NUMERICHOST))
	return std::string(name);
	}
	if (IsIPv4())
	return strprintf("%u.%u.%u.%u", GetByte(3), GetByte(2), GetByte(1), GetByte(0));
	else
	return strprintf("%x:%x:%x:%x:%x:%x:%x:%x",
	GetByte(15) << 8 \| GetByte(14), GetByte(13) << 8 \| GetByte(12),
	GetByte(11) << 8 \| GetByte(10), GetByte(9) << 8 \| GetByte(8),
	GetByte(7) << 8 \| GetByte(6), GetByte(5) << 8 \| GetByte(4),
	GetByte(3) << 8 \| GetByte(2), GetByte(1) << 8 \| GetByte(0));
	}

	std::string CNetAddr::ToString() const
	{
	return ToStringIP();
	}

	bool operator==(const CNetAddr& a, const CNetAddr& b)
	{
	return (memcmp(a.ip, b.ip, 16) == 0);
	}

	bool operator!=(const CNetAddr& a, const CNetAddr& b)
	{
	return (memcmp(a.ip, b.ip, 16) != 0);
	}

	bool operator<(const CNetAddr& a, const CNetAddr& b)
	{
	return (memcmp(a.ip, b.ip, 16) < 0);
	}

	bool CNetAddr::GetInAddr(struct in_addr* pipv4Addr) const
	{
	if (!IsIPv4())
	return false;
	memcpy(pipv4Addr, ip+12, 4);
	return true;
	}

	bool CNetAddr::GetIn6Addr(struct in6_addr* pipv6Addr) const
	{
	memcpy(pipv6Addr, ip, 16);
	return true;
	}

	// get canonical identifier of an address' group
	// no two connections will be attempted to addresses with the same group
	std::vector<unsigned char> CNetAddr::GetGroup() const
	{
	std::vector<unsigned char> vchRet;
	int nClass = NET_IPV6;
	int nStartByte = 0;
	int nBits = 16;

	// all local addresses belong to the same group
	if (IsLocal())
	{
	nClass = 255;
	nBits = 0;
	}

	// all unroutable addresses belong to the same group
	if (!IsRoutable())
	{
	nClass = NET_UNROUTABLE;
	nBits = 0;
	}
	// for IPv4 addresses, '1' + the 16 higher-order bits of the IP
	// includes mapped IPv4, SIIT translated IPv4, and the well-known prefix
	else if (IsIPv4() \|\| IsRFC6145() \|\| IsRFC6052())
	{
	nClass = NET_IPV4;
	nStartByte = 12;
	}
	// for 6to4 tunnelled addresses, use the encapsulated IPv4 address
	else if (IsRFC3964())
	{
	nClass = NET_IPV4;
	nStartByte = 2;
	}
	// for Teredo-tunnelled IPv6 addresses, use the encapsulated IPv4 address
	else if (IsRFC4380())
	{
	vchRet.push_back(NET_IPV4);
	vchRet.push_back(GetByte(3) ^ 0xFF);
	vchRet.push_back(GetByte(2) ^ 0xFF);
	return vchRet;
	}
	else if (IsTor())
	{
	nClass = NET_TOR;
	nStartByte = 6;
	nBits = 4;
	}
	// for he.net, use /36 groups
	else if (GetByte(15) == 0x20 && GetByte(14) == 0x01 && GetByte(13) == 0x04 && GetByte(12) == 0x70)
	nBits = 36;
	// for the rest of the IPv6 network, use /32 groups
	else
	nBits = 32;

	vchRet.push_back(nClass);
	while (nBits >= 8)
	{
	vchRet.push_back(GetByte(15 - nStartByte));
	nStartByte++;
	nBits -= 8;
	}
	if (nBits > 0)
	- vchRet.push_back(GetByte(15 - nStartByte) \| ((1 << nBits) - 1));
	+ vchRet.push_back(GetByte(15 - nStartByte) \| ((1 << (8 - nBits)) - 1));

	return vchRet;
	}

	uint64_t CNetAddr::GetHash() const
	{
	uint256 hash = Hash(&ip[0], &ip[16]);
	uint64_t nRet;
	memcpy(&nRet, &hash, sizeof(nRet));
	return nRet;
	}

	// private extensions to enum Network, only returned by GetExtNetwork,
	// and only used in GetReachabilityFrom
	static const int NET_UNKNOWN = NET_MAX + 0;
	static const int NET_TEREDO = NET_MAX + 1;
	int static GetExtNetwork(const CNetAddr *addr)
	{
	if (addr == NULL)
	return NET_UNKNOWN;
	if (addr->IsRFC4380())
	return NET_TEREDO;
	return addr->GetNetwork();
	}

	/** Calculates a metric for how reachable (this) is from a given partner /
	int CNetAddr::GetReachabilityFrom(const CNetAddr *paddrPartner) const
	{
	enum Reachability {
	REACH_UNREACHABLE,
	REACH_DEFAULT,
	REACH_TEREDO,
	REACH_IPV6_WEAK,
	REACH_IPV4,
	REACH_IPV6_STRONG,
	REACH_PRIVATE
	};

	if (!IsRoutable())
	return REACH_UNREACHABLE;

	int ourNet = GetExtNetwork(this);
	int theirNet = GetExtNetwork(paddrPartner);
	bool fTunnel = IsRFC3964() \|\| IsRFC6052() \|\| IsRFC6145();

	switch(theirNet) {
	case NET_IPV4:
	switch(ourNet) {
	default: return REACH_DEFAULT;
	case NET_IPV4: return REACH_IPV4;
	}
	case NET_IPV6:
	switch(ourNet) {
	default: return REACH_DEFAULT;
	case NET_TEREDO: return REACH_TEREDO;
	case NET_IPV4: return REACH_IPV4;
	case NET_IPV6: return fTunnel ? REACH_IPV6_WEAK : REACH_IPV6_STRONG; // only prefer giving our IPv6 address if it's not tunnelled
	}
	case NET_TOR:
	switch(ourNet) {
	default: return REACH_DEFAULT;
	case NET_IPV4: return REACH_IPV4; // Tor users can connect to IPv4 as well
	case NET_TOR: return REACH_PRIVATE;
	}
	case NET_TEREDO:
	switch(ourNet) {
	default: return REACH_DEFAULT;
	case NET_TEREDO: return REACH_TEREDO;
	case NET_IPV6: return REACH_IPV6_WEAK;
	case NET_IPV4: return REACH_IPV4;
	}
	case NET_UNKNOWN:
	case NET_UNROUTABLE:
	default:
	switch(ourNet) {
	default: return REACH_DEFAULT;
	case NET_TEREDO: return REACH_TEREDO;
	case NET_IPV6: return REACH_IPV6_WEAK;
	case NET_IPV4: return REACH_IPV4;
	case NET_TOR: return REACH_PRIVATE; // either from Tor, or don't care about our address
	}
	}
	}

	void CService::Init()
	{
	port = 0;
	}

	CService::CService()
	{
	Init();
	}

	CService::CService(const CNetAddr& cip, unsigned short portIn) : CNetAddr(cip), port(portIn)
	{
	}

	CService::CService(const struct in_addr& ipv4Addr, unsigned short portIn) : CNetAddr(ipv4Addr), port(portIn)
	{
	}

	CService::CService(const struct in6_addr& ipv6Addr, unsigned short portIn) : CNetAddr(ipv6Addr), port(portIn)
	{
	}

	CService::CService(const struct sockaddr_in& addr) : CNetAddr(addr.sin_addr), port(ntohs(addr.sin_port))
	{
	assert(addr.sin_family == AF_INET);
	}

	CService::CService(const struct sockaddr_in6 &addr) : CNetAddr(addr.sin6_addr), port(ntohs(addr.sin6_port))
	{
	assert(addr.sin6_family == AF_INET6);
	}

	bool CService::SetSockAddr(const struct sockaddr *paddr)
	{
	switch (paddr->sa_family) {
	case AF_INET:
	this = CService((const struct sockaddr_in*)paddr);
	return true;
	case AF_INET6:
	this = CService((const struct sockaddr_in6*)paddr);
	return true;
	default:
	return false;
	}
	}

	CService::CService(const char *pszIpPort, bool fAllowLookup)
	{
	Init();
	CService ip;
	if (Lookup(pszIpPort, ip, 0, fAllowLookup))
	*this = ip;
	}

	CService::CService(const char *pszIpPort, int portDefault, bool fAllowLookup)
	{
	Init();
	CService ip;
	if (Lookup(pszIpPort, ip, portDefault, fAllowLookup))
	*this = ip;
	}

	CService::CService(const std::string &strIpPort, bool fAllowLookup)
	{
	Init();
	CService ip;
	if (Lookup(strIpPort.c_str(), ip, 0, fAllowLookup))
	*this = ip;
	}

	CService::CService(const std::string &strIpPort, int portDefault, bool fAllowLookup)
	{
	Init();
	CService ip;
	if (Lookup(strIpPort.c_str(), ip, portDefault, fAllowLookup))
	*this = ip;
	}

	unsigned short CService::GetPort() const
	{
	return port;
	}

	bool operator==(const CService& a, const CService& b)
	{
	return (CNetAddr)a == (CNetAddr)b && a.port == b.port;
	}

	bool operator!=(const CService& a, const CService& b)
	{
	return (CNetAddr)a != (CNetAddr)b \|\| a.port != b.port;
	}

	bool operator<(const CService& a, const CService& b)
	{
	return (CNetAddr)a < (CNetAddr)b \|\| ((CNetAddr)a == (CNetAddr)b && a.port < b.port);
	}

	bool CService::GetSockAddr(struct sockaddr* paddr, socklen_t *addrlen) const
	{
	if (IsIPv4()) {
	if (*addrlen < (socklen_t)sizeof(struct sockaddr_in))
	return false;
	*addrlen = sizeof(struct sockaddr_in);
	struct sockaddr_in paddrin = (struct sockaddr_in)paddr;
	memset(paddrin, 0, *addrlen);
	if (!GetInAddr(&paddrin->sin_addr))
	return false;
	paddrin->sin_family = AF_INET;
	paddrin->sin_port = htons(port);
	return true;
	}
	if (IsIPv6()) {
	if (*addrlen < (socklen_t)sizeof(struct sockaddr_in6))
	return false;
	*addrlen = sizeof(struct sockaddr_in6);
	struct sockaddr_in6 paddrin6 = (struct sockaddr_in6)paddr;
	memset(paddrin6, 0, *addrlen);
	if (!GetIn6Addr(&paddrin6->sin6_addr))
	return false;
	paddrin6->sin6_family = AF_INET6;
	paddrin6->sin6_port = htons(port);
	return true;
	}
	return false;
	}

	std::vector<unsigned char> CService::GetKey() const
	{
	std::vector<unsigned char> vKey;
	vKey.resize(18);
	memcpy(&vKey[0], ip, 16);
	vKey[16] = port / 0x100;
	vKey[17] = port & 0x0FF;
	return vKey;
	}

	std::string CService::ToStringPort() const
	{
	return strprintf("%u", port);
	}

	std::string CService::ToStringIPPort() const
	{
	if (IsIPv4() \|\| IsTor()) {
	return ToStringIP() + ":" + ToStringPort();
	} else {
	return "[" + ToStringIP() + "]:" + ToStringPort();
	}
	}

	std::string CService::ToString() const
	{
	return ToStringIPPort();
	}

	void CService::SetPort(unsigned short portIn)
	{
	port = portIn;
	}

	CSubNet::CSubNet():
	valid(false)
	{
	memset(netmask, 0, sizeof(netmask));
	}

	CSubNet::CSubNet(const std::string &strSubnet, bool fAllowLookup)
	{
	size_t slash = strSubnet.find_last_of('/');
	std::vector<CNetAddr> vIP;

	valid = true;
	// Default to /32 (IPv4) or /128 (IPv6), i.e. match single address
	memset(netmask, 255, sizeof(netmask));

	std::string strAddress = strSubnet.substr(0, slash);
	if (LookupHost(strAddress.c_str(), vIP, 1, fAllowLookup))
	{
	network = vIP[0];
	if (slash != strSubnet.npos)
	{
	std::string strNetmask = strSubnet.substr(slash + 1);
	int32_t n;
	// IPv4 addresses start at offset 12, and first 12 bytes must match, so just offset n
	const int astartofs = network.IsIPv4() ? 12 : 0;
	if (ParseInt32(strNetmask, &n)) // If valid number, assume /24 symtex
	{
	if(n >= 0 && n <= (128 - astartofs*8)) // Only valid if in range of bits of address
	{
	n += astartofs*8;
	// Clear bits [n..127]
	for (; n < 128; ++n)
	netmask[n>>3] &= ~(1<<(7-(n&7)));
	}
	else
	{
	valid = false;
	}
	}
	else // If not a valid number, try full netmask syntax
	{
	if (LookupHost(strNetmask.c_str(), vIP, 1, false)) // Never allow lookup for netmask
	{
	// Copy only the last four bytes in case of IPv4, the rest of the mask should stay 1's as
	// we don't want pchIPv4 to be part of the mask.
	for(int x=astartofs; x<16; ++x)
	netmask[x] = vIP[0].ip[x];
	}
	else
	{
	valid = false;
	}
	}
	}
	}
	else
	{
	valid = false;
	}

	// Normalize network according to netmask
	for(int x=0; x<16; ++x)
	network.ip[x] &= netmask[x];
	}

	CSubNet::CSubNet(const CNetAddr &addr):
	valid(addr.IsValid())
	{
	memset(netmask, 255, sizeof(netmask));
	network = addr;
	}

	bool CSubNet::Match(const CNetAddr &addr) const
	{
	if (!valid \|\| !addr.IsValid())
	return false;
	for(int x=0; x<16; ++x)
	if ((addr.ip[x] & netmask[x]) != network.ip[x])
	return false;
	return true;
	}

	std::string CSubNet::ToString() const
	{
	std::string strNetmask;
	if (network.IsIPv4())
	strNetmask = strprintf("%u.%u.%u.%u", netmask[12], netmask[13], netmask[14], netmask[15]);
	else
	strNetmask = strprintf("%x:%x:%x:%x:%x:%x:%x:%x",
	netmask[0] << 8 \| netmask[1], netmask[2] << 8 \| netmask[3],
	netmask[4] << 8 \| netmask[5], netmask[6] << 8 \| netmask[7],
	netmask[8] << 8 \| netmask[9], netmask[10] << 8 \| netmask[11],
	netmask[12] << 8 \| netmask[13], netmask[14] << 8 \| netmask[15]);
	return network.ToString() + "/" + strNetmask;
	}

	bool CSubNet::IsValid() const
	{
	return valid;
	}

	bool operator==(const CSubNet& a, const CSubNet& b)
	{
	return a.valid == b.valid && a.network == b.network && !memcmp(a.netmask, b.netmask, 16);
	}

	bool operator!=(const CSubNet& a, const CSubNet& b)
	{
	return !(a==b);
	}

	bool operator<(const CSubNet& a, const CSubNet& b)
	{
	return (a.network < b.network \|\| (a.network == b.network && memcmp(a.netmask, b.netmask, 16) < 0));
	}

	#ifdef WIN32
	std::string NetworkErrorString(int err)
	{
	char buf[256];
	buf[0] = 0;
	if(FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM \| FORMAT_MESSAGE_IGNORE_INSERTS \| FORMAT_MESSAGE_MAX_WIDTH_MASK,
	NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
	buf, sizeof(buf), NULL))
	{
	return strprintf("%s (%d)", buf, err);
	}
	else
	{
	return strprintf("Unknown error (%d)", err);
	}
	}
	#else
	std::string NetworkErrorString(int err)
	{
	char buf[256];
	const char *s = buf;
	buf[0] = 0;
	/* Too bad there are two incompatible implementations of the
	* thread-safe strerror. */
	#ifdef STRERROR_R_CHAR_P /* GNU variant can return a pointer outside the passed buffer */
	s = strerror_r(err, buf, sizeof(buf));
	#else /* POSIX variant always returns message in buffer */
	if (strerror_r(err, buf, sizeof(buf)))
	buf[0] = 0;
	#endif
	return strprintf("%s (%d)", s, err);
	}
	#endif

	bool CloseSocket(SOCKET& hSocket)
	{
	if (hSocket == INVALID_SOCKET)
	return false;
	#ifdef WIN32
	int ret = closesocket(hSocket);
	#else
	int ret = close(hSocket);
	#endif
	hSocket = INVALID_SOCKET;
	return ret != SOCKET_ERROR;
	}

	bool SetSocketNonBlocking(SOCKET& hSocket, bool fNonBlocking)
	{
	if (fNonBlocking) {
	#ifdef WIN32
	u_long nOne = 1;
	if (ioctlsocket(hSocket, FIONBIO, &nOne) == SOCKET_ERROR) {
	#else
	int fFlags = fcntl(hSocket, F_GETFL, 0);
	if (fcntl(hSocket, F_SETFL, fFlags \| O_NONBLOCK) == SOCKET_ERROR) {
	#endif
	CloseSocket(hSocket);
	return false;
	}
	} else {
	#ifdef WIN32
	u_long nZero = 0;
	if (ioctlsocket(hSocket, FIONBIO, &nZero) == SOCKET_ERROR) {
	#else
	int fFlags = fcntl(hSocket, F_GETFL, 0);
	if (fcntl(hSocket, F_SETFL, fFlags & ~O_NONBLOCK) == SOCKET_ERROR) {
	#endif
	CloseSocket(hSocket);
	return false;
	}
	}

	return true;
	}

File Metadata

Mime Type: text/x-diff
Expires: Wed, May 21, 22:09 (1 d, 20 h)
Storage Engine: blob
Storage Format: Raw Data
Storage Handle: 5866025
Default Alt Text: (43 KB)

No OneTemporaryActions

View Options

File Metadata

Event Timeline

No OneTemporary
Actions