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-rw-r--r--src/net.cpp156
1 files changed, 72 insertions, 84 deletions
diff --git a/src/net.cpp b/src/net.cpp
index a8e5143d5e..8111390749 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -1,5 +1,5 @@
// Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2016 The Bitcoin Core developers
+// Copyright (c) 2009-2017 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
@@ -9,13 +9,11 @@
#include <net.h>
-#include <addrman.h>
#include <chainparams.h>
#include <clientversion.h>
#include <consensus/consensus.h>
#include <crypto/common.h>
#include <crypto/sha256.h>
-#include <hash.h>
#include <primitives/transaction.h>
#include <netbase.h>
#include <scheduler.h>
@@ -110,13 +108,13 @@ bool GetLocal(CService& addr, const CNetAddr *paddrPeer)
int nBestReachability = -1;
{
LOCK(cs_mapLocalHost);
- for (std::map<CNetAddr, LocalServiceInfo>::iterator it = mapLocalHost.begin(); it != mapLocalHost.end(); it++)
+ for (const auto& entry : mapLocalHost)
{
- int nScore = (*it).second.nScore;
- int nReachability = (*it).first.GetReachabilityFrom(paddrPeer);
+ int nScore = entry.second.nScore;
+ int nReachability = entry.first.GetReachabilityFrom(paddrPeer);
if (nReachability > nBestReachability || (nReachability == nBestReachability && nScore > nBestScore))
{
- addr = CService((*it).first, (*it).second.nPort);
+ addr = CService(entry.first, entry.second.nPort);
nBestReachability = nReachability;
nBestScore = nScore;
}
@@ -138,7 +136,7 @@ static std::vector<CAddress> convertSeed6(const std::vector<SeedSpec6> &vSeedsIn
for (const auto& seed_in : vSeedsIn) {
struct in6_addr ip;
memcpy(&ip, seed_in.addr, sizeof(ip));
- CAddress addr(CService(ip, seed_in.port), NODE_NETWORK);
+ CAddress addr(CService(ip, seed_in.port), GetDesirableServiceFlags(NODE_NONE));
addr.nTime = GetTime() - GetRand(nOneWeek) - nOneWeek;
vSeedsOut.push_back(addr);
}
@@ -417,39 +415,48 @@ CNode* CConnman::ConnectNode(CAddress addrConnect, const char *pszDest, bool fCo
if (addrConnect.IsValid()) {
bool proxyConnectionFailed = false;
- if (GetProxy(addrConnect.GetNetwork(), proxy))
+ if (GetProxy(addrConnect.GetNetwork(), proxy)) {
+ hSocket = CreateSocket(proxy.proxy);
+ if (hSocket == INVALID_SOCKET) {
+ return nullptr;
+ }
connected = ConnectThroughProxy(proxy, addrConnect.ToStringIP(), addrConnect.GetPort(), hSocket, nConnectTimeout, &proxyConnectionFailed);
- else // no proxy needed (none set for target network)
+ } else {
+ // no proxy needed (none set for target network)
+ hSocket = CreateSocket(addrConnect);
+ if (hSocket == INVALID_SOCKET) {
+ return nullptr;
+ }
connected = ConnectSocketDirectly(addrConnect, hSocket, nConnectTimeout);
+ }
if (!proxyConnectionFailed) {
// If a connection to the node was attempted, and failure (if any) is not caused by a problem connecting to
// the proxy, mark this as an attempt.
addrman.Attempt(addrConnect, fCountFailure);
}
} else if (pszDest && GetNameProxy(proxy)) {
+ hSocket = CreateSocket(proxy.proxy);
+ if (hSocket == INVALID_SOCKET) {
+ return nullptr;
+ }
std::string host;
int port = default_port;
SplitHostPort(std::string(pszDest), port, host);
connected = ConnectThroughProxy(proxy, host, port, hSocket, nConnectTimeout, nullptr);
}
- if (connected) {
- if (!IsSelectableSocket(hSocket)) {
- LogPrintf("Cannot create connection: non-selectable socket created (fd >= FD_SETSIZE ?)\n");
- CloseSocket(hSocket);
- return nullptr;
- }
-
- // Add node
- NodeId id = GetNewNodeId();
- uint64_t nonce = GetDeterministicRandomizer(RANDOMIZER_ID_LOCALHOSTNONCE).Write(id).Finalize();
- CAddress addr_bind = GetBindAddress(hSocket);
- CNode* pnode = new CNode(id, nLocalServices, GetBestHeight(), hSocket, addrConnect, CalculateKeyedNetGroup(addrConnect), nonce, addr_bind, pszDest ? pszDest : "", false);
- pnode->AddRef();
-
- return pnode;
+ if (!connected) {
+ CloseSocket(hSocket);
+ return nullptr;
}
- return nullptr;
+ // Add node
+ NodeId id = GetNewNodeId();
+ uint64_t nonce = GetDeterministicRandomizer(RANDOMIZER_ID_LOCALHOSTNONCE).Write(id).Finalize();
+ CAddress addr_bind = GetBindAddress(hSocket);
+ CNode* pnode = new CNode(id, nLocalServices, GetBestHeight(), hSocket, addrConnect, CalculateKeyedNetGroup(addrConnect), nonce, addr_bind, pszDest ? pszDest : "", false);
+ pnode->AddRef();
+
+ return pnode;
}
void CConnman::DumpBanlist()
@@ -596,21 +603,28 @@ void CConnman::SetBanned(const banmap_t &banMap)
void CConnman::SweepBanned()
{
int64_t now = GetTime();
-
- LOCK(cs_setBanned);
- banmap_t::iterator it = setBanned.begin();
- while(it != setBanned.end())
+ bool notifyUI = false;
{
- CSubNet subNet = (*it).first;
- CBanEntry banEntry = (*it).second;
- if(now > banEntry.nBanUntil)
+ LOCK(cs_setBanned);
+ banmap_t::iterator it = setBanned.begin();
+ while(it != setBanned.end())
{
- setBanned.erase(it++);
- setBannedIsDirty = true;
- LogPrint(BCLog::NET, "%s: Removed banned node ip/subnet from banlist.dat: %s\n", __func__, subNet.ToString());
+ CSubNet subNet = (*it).first;
+ CBanEntry banEntry = (*it).second;
+ if(now > banEntry.nBanUntil)
+ {
+ setBanned.erase(it++);
+ setBannedIsDirty = true;
+ notifyUI = true;
+ LogPrint(BCLog::NET, "%s: Removed banned node ip/subnet from banlist.dat: %s\n", __func__, subNet.ToString());
+ }
+ else
+ ++it;
}
- else
- ++it;
+ }
+ // update UI
+ if(notifyUI && clientInterface) {
+ clientInterface->BannedListChanged();
}
}
@@ -1102,7 +1116,7 @@ void CConnman::AcceptConnection(const ListenSocket& hListenSocket) {
if (IsBanned(addr) && !whitelisted)
{
- LogPrintf("connection from %s dropped (banned)\n", addr.ToString());
+ LogPrint(BCLog::NET, "connection from %s dropped (banned)\n", addr.ToString());
CloseSocket(hSocket);
return;
}
@@ -1563,19 +1577,6 @@ void MapPort(bool)
-static std::string GetDNSHost(const CDNSSeedData& data, ServiceFlags* requiredServiceBits)
-{
- //use default host for non-filter-capable seeds or if we use the default service bits (NODE_NETWORK)
- if (!data.supportsServiceBitsFiltering || *requiredServiceBits == NODE_NETWORK) {
- *requiredServiceBits = NODE_NETWORK;
- return data.host;
- }
-
- // See chainparams.cpp, most dnsseeds only support one or two possible servicebits hostnames
- return strprintf("x%x.%s", *requiredServiceBits, data.host);
-}
-
-
void CConnman::ThreadDNSAddressSeed()
{
// goal: only query DNS seeds if address need is acute
@@ -1598,22 +1599,22 @@ void CConnman::ThreadDNSAddressSeed()
}
}
- const std::vector<CDNSSeedData> &vSeeds = Params().DNSSeeds();
+ const std::vector<std::string> &vSeeds = Params().DNSSeeds();
int found = 0;
LogPrintf("Loading addresses from DNS seeds (could take a while)\n");
- for (const CDNSSeedData &seed : vSeeds) {
+ for (const std::string &seed : vSeeds) {
if (interruptNet) {
return;
}
if (HaveNameProxy()) {
- AddOneShot(seed.host);
+ AddOneShot(seed);
} else {
std::vector<CNetAddr> vIPs;
std::vector<CAddress> vAdd;
ServiceFlags requiredServiceBits = GetDesirableServiceFlags(NODE_NONE);
- std::string host = GetDNSHost(seed, &requiredServiceBits);
+ std::string host = strprintf("x%x.%s", requiredServiceBits, seed);
CNetAddr resolveSource;
if (!resolveSource.SetInternal(host)) {
continue;
@@ -1629,6 +1630,10 @@ void CConnman::ThreadDNSAddressSeed()
found++;
}
addrman.Add(vAdd, resolveSource);
+ } else {
+ // We now avoid directly using results from DNS Seeds which do not support service bit filtering,
+ // instead using them as a oneshot to get nodes with our desired service bits.
+ AddOneShot(seed);
}
}
}
@@ -2058,44 +2063,21 @@ bool CConnman::BindListenPort(const CService &addrBind, std::string& strError, b
return false;
}
- SOCKET hListenSocket = socket(((struct sockaddr*)&sockaddr)->sa_family, SOCK_STREAM, IPPROTO_TCP);
+ SOCKET hListenSocket = CreateSocket(addrBind);
if (hListenSocket == INVALID_SOCKET)
{
strError = strprintf("Error: Couldn't open socket for incoming connections (socket returned error %s)", NetworkErrorString(WSAGetLastError()));
LogPrintf("%s\n", strError);
return false;
}
- if (!IsSelectableSocket(hListenSocket))
- {
- strError = "Error: Couldn't create a listenable socket for incoming connections";
- LogPrintf("%s\n", strError);
- return false;
- }
-
-
#ifndef WIN32
-#ifdef SO_NOSIGPIPE
- // Different way of disabling SIGPIPE on BSD
- setsockopt(hListenSocket, SOL_SOCKET, SO_NOSIGPIPE, (void*)&nOne, sizeof(int));
-#endif
// Allow binding if the port is still in TIME_WAIT state after
// the program was closed and restarted.
setsockopt(hListenSocket, SOL_SOCKET, SO_REUSEADDR, (void*)&nOne, sizeof(int));
- // Disable Nagle's algorithm
- setsockopt(hListenSocket, IPPROTO_TCP, TCP_NODELAY, (void*)&nOne, sizeof(int));
#else
setsockopt(hListenSocket, SOL_SOCKET, SO_REUSEADDR, (const char*)&nOne, sizeof(int));
- setsockopt(hListenSocket, IPPROTO_TCP, TCP_NODELAY, (const char*)&nOne, sizeof(int));
#endif
- // Set to non-blocking, incoming connections will also inherit this
- if (!SetSocketNonBlocking(hListenSocket, true)) {
- CloseSocket(hListenSocket);
- strError = strprintf("BindListenPort: Setting listening socket to non-blocking failed, error %s\n", NetworkErrorString(WSAGetLastError()));
- LogPrintf("%s\n", strError);
- return false;
- }
-
// some systems don't have IPV6_V6ONLY but are always v6only; others do have the option
// and enable it by default or not. Try to enable it, if possible.
if (addrBind.IsIPv6()) {
@@ -2269,10 +2251,16 @@ bool CConnman::Start(CScheduler& scheduler, const Options& connOptions)
{
Init(connOptions);
- nTotalBytesRecv = 0;
- nTotalBytesSent = 0;
- nMaxOutboundTotalBytesSentInCycle = 0;
- nMaxOutboundCycleStartTime = 0;
+ {
+ LOCK(cs_totalBytesRecv);
+ nTotalBytesRecv = 0;
+ }
+ {
+ LOCK(cs_totalBytesSent);
+ nTotalBytesSent = 0;
+ nMaxOutboundTotalBytesSentInCycle = 0;
+ nMaxOutboundCycleStartTime = 0;
+ }
if (fListen && !InitBinds(connOptions.vBinds, connOptions.vWhiteBinds)) {
if (clientInterface) {
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-07 13:11:24 +0000