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-rw-r--r--node/Defaults.cpp17
-rw-r--r--node/Defaults.hpp4
-rw-r--r--node/InetAddress.cpp32
-rw-r--r--node/Node.cpp32
-rw-r--r--node/NodeConfig.cpp2
-rw-r--r--node/Path.hpp13
-rw-r--r--node/Peer.cpp44
-rw-r--r--node/RuntimeEnvironment.hpp9
-rw-r--r--node/SocketManager.cpp77
-rw-r--r--node/Switch.cpp4
-rw-r--r--node/TcpSocket.cpp34
-rw-r--r--node/Topology.cpp9
-rw-r--r--node/Topology.hpp13
-rw-r--r--node/UdpSocket.cpp9
-rw-r--r--node/Utils.cpp4
15 files changed, 164 insertions, 139 deletions
diff --git a/node/Defaults.cpp b/node/Defaults.cpp
index 3e0727da..44d5aa05 100644
--- a/node/Defaults.cpp
+++ b/node/Defaults.cpp
@@ -43,11 +43,11 @@ namespace ZeroTier {
const Defaults ZT_DEFAULTS;
-static inline std::map< Identity,std::vector<InetAddress> > _mkSupernodeMap()
+static inline std::map< Identity,std::vector< std::pair<InetAddress,bool> > > _mkSupernodeMap()
{
- std::map< Identity,std::vector<InetAddress> > sn;
+ std::map< Identity,std::vector< std::pair<InetAddress,bool> > > sn;
Identity id;
- std::vector<InetAddress> addrs;
+ std::vector< std::pair<InetAddress,bool> > addrs;
// Nothing special about a supernode... except that they are
// designated as such and trusted to provide WHOIS lookup.
@@ -56,35 +56,36 @@ static inline std::map< Identity,std::vector<InetAddress> > _mkSupernodeMap()
addrs.clear();
if (!id.fromString("8acf059fe3:0:482f6ee5dfe902319b419de5bdc765209c0ecda38c4d6e4fcf0d33658398b4527dcd22f93112fb9befd02fd78bf7261b333fc105d192a623ca9e50fc60b374a5"))
throw std::runtime_error("invalid identity in Defaults");
- addrs.push_back(InetAddress("162.243.77.111",ZT_DEFAULT_PORT));
+ addrs.push_back(std::pair<InetAddress,bool>(InetAddress("162.243.77.111",ZT_DEFAULT_PORT),false));
+ addrs.push_back(std::pair<InetAddress,bool>(InetAddress("162.243.77.111",443),true));
sn[id] = addrs;
// nyarlathotep.zerotier.com - San Francisco, California, USA
addrs.clear();
if (!id.fromString("7e19876aba:0:2a6e2b2318930f60eb097f70d0f4b028b2cd6d3d0c63c014b9039ff35390e41181f216fb2e6fa8d95c1ee9667156411905c3dccfea78d8c6dfafba688170b3fa"))
throw std::runtime_error("invalid identity in Defaults");
- addrs.push_back(InetAddress("198.199.97.220",ZT_DEFAULT_PORT));
+ addrs.push_back(std::pair<InetAddress,bool>(InetAddress("198.199.97.220",ZT_DEFAULT_PORT),false));
sn[id] = addrs;
// shub-niggurath.zerotier.com - Amsterdam, Netherlands
addrs.clear();
if (!id.fromString("36f63d6574:0:67a776487a1a99b32f413329f2b67c43fbf6152e42c6b66e89043e69d93e48314c7d709b58a83016bd2612dd89400b856e18c553da94892f7d3ca16bf2c92c24"))
throw std::runtime_error("invalid identity in Defaults");
- addrs.push_back(InetAddress("198.211.127.172",ZT_DEFAULT_PORT));
+ addrs.push_back(std::pair<InetAddress,bool>(InetAddress("198.211.127.172",ZT_DEFAULT_PORT),false));
sn[id] = addrs;
// mi-go.zerotier.com - Singapore
addrs.clear();
if (!id.fromString("abbb7f4622:0:89d2c6b2062b10f4ce314dfcb914c082566247090a6f74c8ba1c15c63b205f540758f0abae85287397152c9d8cf463cfe51e7a480946cd6a31495b24ca13253c"))
throw std::runtime_error("invalid identity in Defaults");
- addrs.push_back(InetAddress("128.199.254.204",ZT_DEFAULT_PORT));
+ addrs.push_back(std::pair<InetAddress,bool>(InetAddress("128.199.254.204",ZT_DEFAULT_PORT),false));
sn[id] = addrs;
// shoggoth.zerotier.com - Tokyo, Japan
addrs.clear();
if (!id.fromString("48e8f875cb:0:5ca54f55e1094f65589f3e6d74158b6964d418ddac3570757128f1c6a2498322d92fcdcd47de459f4d1f9b38df2afd0c7b3fc247ba3d773c38ba35288f24988e"))
throw std::runtime_error("invalid identity in Defaults");
- addrs.push_back(InetAddress("108.61.200.101",ZT_DEFAULT_PORT));
+ addrs.push_back(std::pair<InetAddress,bool>(InetAddress("108.61.200.101",ZT_DEFAULT_PORT),false));
sn[id] = addrs;
return sn;
diff --git a/node/Defaults.hpp b/node/Defaults.hpp
index 0c640df7..50c2dce5 100644
--- a/node/Defaults.hpp
+++ b/node/Defaults.hpp
@@ -64,9 +64,9 @@ public:
const std::string defaultHomePath;
/**
- * Supernodes on the ZeroTier network
+ * Supernodes on the ZeroTier network (identity, address/tcp?)
*/
- const std::map< Identity,std::vector<InetAddress> > supernodes;
+ const std::map< Identity,std::vector< std::pair<InetAddress,bool> > > supernodes;
/**
* Identities permitted to sign software updates
diff --git a/node/InetAddress.cpp b/node/InetAddress.cpp
index 349646cb..0a7dd88c 100644
--- a/node/InetAddress.cpp
+++ b/node/InetAddress.cpp
@@ -141,27 +141,29 @@ bool InetAddress::operator==(const InetAddress &a) const
return (!memcmp(_sa.sin6.sin6_addr.s6_addr,a._sa.sin6.sin6_addr.s6_addr,sizeof(_sa.sin6.sin6_addr.s6_addr)));
}
return false;
- } else if (!_sa.saddr.sa_family)
- return (!a._sa.saddr.sa_family);
- return (!memcmp(&_sa,&a._sa,sizeof(_sa)));
+ } else return (memcmp(&_sa,&a._sa,sizeof(_sa)) == 0);
}
bool InetAddress::operator<(const InetAddress &a) const
throw()
{
- if (_sa.saddr.sa_family == AF_INET) {
- if (a._sa.saddr.sa_family == AF_INET)
- return ((ntohl(_sa.sin.sin_addr.s_addr < ntohl(a._sa.sin.sin_addr.s_addr)))||((_sa.sin.sin_addr.s_addr == a._sa.sin.sin_addr.s_addr)&&(ntohs(_sa.sin.sin_port) < ntohs(a._sa.sin.sin_port))));
- else if (a._sa.saddr.sa_family == AF_INET6)
- return true;
- } else if (_sa.saddr.sa_family == AF_INET6) {
- if (a._sa.saddr.sa_family == AF_INET6) {
- int cmp = memcmp(_sa.sin6.sin6_addr.s6_addr,a._sa.sin6.sin6_addr.s6_addr,16);
- return ((cmp < 0)||((!cmp)&&(ntohs(_sa.sin6.sin6_port) < ntohs(a._sa.sin6.sin6_port))));
- } else if (a._sa.saddr.sa_family == AF_INET)
- return false;
+ if (_sa.saddr.sa_family < a._sa.saddr.sa_family)
+ return true;
+ else if (_sa.saddr.sa_family == a._sa.saddr.sa_family) {
+ if (_sa.saddr.sa_family == AF_INET) {
+ unsigned long x = ntohl(_sa.sin.sin_addr.s_addr);
+ unsigned long y = ntohl(a._sa.sin.sin_addr.s_addr);
+ if (x == y)
+ return (ntohs(_sa.sin.sin_port) < ntohs(a._sa.sin.sin_port));
+ else return (x < y);
+ } else if (_sa.saddr.sa_family == AF_INET6) {
+ int cmp = (int)memcmp(_sa.sin6.sin6_addr.s6_addr,a._sa.sin6.sin6_addr.s6_addr,16);
+ if (cmp == 0)
+ return (ntohs(_sa.sin6.sin6_port) < ntohs(a._sa.sin6.sin6_port));
+ else return (cmp < 0);
+ } else return (memcmp(&_sa,&a._sa,sizeof(_sa)) < 0);
}
- return (_sa.saddr.sa_family < a._sa.saddr.sa_family);
+ return false;
}
} // namespace ZeroTier
diff --git a/node/Node.cpp b/node/Node.cpp
index 913b7400..3976e340 100644
--- a/node/Node.cpp
+++ b/node/Node.cpp
@@ -537,10 +537,10 @@ Node::ReasonForTermination Node::run()
uint64_t lastClean = Utils::now(); // don't need to do this immediately
uint64_t lastNetworkFingerprintCheck = 0;
uint64_t lastMulticastCheck = 0;
+ long lastDelayDelta = 0;
uint64_t networkConfigurationFingerprint = _r->sysEnv->getNetworkConfigurationFingerprint(_r->nc->networkTapDeviceNames());
- _r->timeOfLastNetworkEnvironmentChange = Utils::now();
- long lastDelayDelta = 0;
+ _r->timeOfLastResynchronize = Utils::now();
while (impl->reasonForTermination == NODE_RUNNING) {
if (Utils::fileExists(shutdownIfUnreadablePath.c_str(),false)) {
@@ -551,11 +551,13 @@ Node::ReasonForTermination Node::run()
}
uint64_t now = Utils::now();
+
+ // Did the user send SIGHUP or otherwise order network resync? (mostly for debugging)
bool resynchronize = impl->resynchronize;
+ impl->resynchronize = false;
if (resynchronize) {
LOG("manual resynchronize ordered, resyncing with network");
}
- impl->resynchronize = false;
// If it looks like the computer slept and woke, resynchronize.
if (lastDelayDelta >= ZT_SLEEP_WAKE_DETECTION_THRESHOLD) {
@@ -571,14 +573,17 @@ Node::ReasonForTermination Node::run()
if (fp != networkConfigurationFingerprint) {
LOG("netconf fingerprint change: %.16llx != %.16llx, resyncing with network",networkConfigurationFingerprint,fp);
networkConfigurationFingerprint = fp;
- _r->timeOfLastNetworkEnvironmentChange = now;
resynchronize = true;
}
}
- // Ping supernodes separately for two reasons: (1) supernodes only ping each
- // other, and (2) we still want to ping them first on resynchronize.
- if ((resynchronize)||((now - lastSupernodePing) >= ZT_PEER_DIRECT_PING_DELAY)) {
+ if (resynchronize)
+ _r->timeOfLastResynchronize = now;
+
+ /* Ping supernodes separately, and do so more aggressively if we haven't
+ * heard anything from anyone since our last resynchronize / startup. */
+ if ( ((now - lastSupernodePing) >= ZT_PEER_DIRECT_PING_DELAY) ||
+ ((_r->timeOfLastResynchronize > _r->timeOfLastPacketReceived) && ((now - lastSupernodePing) >= ZT_PING_UNANSWERED_AFTER)) ) {
lastSupernodePing = now;
std::vector< SharedPtr<Peer> > sns(_r->topology->supernodePeers());
TRACE("pinging %d supernodes",(int)sns.size());
@@ -594,8 +599,8 @@ Node::ReasonForTermination Node::run()
_r->topology->eachPeer(Topology::ResetActivePeers(_r,now));
_r->sm->closeTcpSockets();
} else {
- // Periodically check for changes in our local multicast subscriptions
- // and broadcast those changes to directly connected peers.
+ /* Periodically check for changes in our local multicast subscriptions
+ * and broadcast those changes to directly connected peers. */
if ((now - lastMulticastCheck) >= ZT_MULTICAST_LOCAL_POLL_PERIOD) {
lastMulticastCheck = now;
try {
@@ -614,8 +619,8 @@ Node::ReasonForTermination Node::run()
}
}
- // Periodically ping all our non-stale direct peers unless we're a supernode.
- // Supernodes only ping each other (which is done above).
+ /* Periodically ping all our non-stale direct peers unless we're a supernode.
+ * Supernodes only ping each other (which is done above). */
if (!_r->topology->amSupernode()) {
if ((now - lastPingCheck) >= ZT_PING_CHECK_DELAY) {
lastPingCheck = now;
@@ -631,7 +636,7 @@ Node::ReasonForTermination Node::run()
}
}
- // Periodically or on resynchronize update network configurations.
+ // Update network configurations when needed.
if ((resynchronize)||((now - lastNetworkAutoconfCheck) >= ZT_NETWORK_AUTOCONF_CHECK_DELAY)) {
lastNetworkAutoconfCheck = now;
std::vector< SharedPtr<Network> > nets(_r->nc->networks());
@@ -641,8 +646,7 @@ Node::ReasonForTermination Node::run()
}
}
- // Do periodic cleanup, flushes of stuff to disk, software update
- // checks, etc.
+ // Do periodic tasks in submodules.
if ((now - lastClean) >= ZT_DB_CLEAN_PERIOD) {
lastClean = now;
_r->mc->clean();
diff --git a/node/NodeConfig.cpp b/node/NodeConfig.cpp
index 30438fc6..e2b1d974 100644
--- a/node/NodeConfig.cpp
+++ b/node/NodeConfig.cpp
@@ -210,7 +210,7 @@ void NodeConfig::_doCommand(IpcConnection *ipcc,const char *commandLine)
// network environment changed and also less than ZT_PEER_LINK_ACTIVITY_TIMEOUT ago.
bool isOnline = false;
uint64_t now = Utils::now();
- uint64_t since = _r->timeOfLastNetworkEnvironmentChange;
+ uint64_t since = _r->timeOfLastResynchronize;
std::vector< SharedPtr<Peer> > snp(_r->topology->supernodePeers());
for(std::vector< SharedPtr<Peer> >::const_iterator sn(snp.begin());sn!=snp.end();++sn) {
uint64_t lastRec = (*sn)->lastDirectReceive();
diff --git a/node/Path.hpp b/node/Path.hpp
index 960b08b3..09ed1f9e 100644
--- a/node/Path.hpp
+++ b/node/Path.hpp
@@ -88,19 +88,6 @@ public:
}
/**
- * @return True if it appears that a ping has gone unanswered
- */
- inline bool pingUnanswered(uint64_t now) const
- throw()
- {
- uint64_t lp = _lastPing;
- uint64_t lr = _lastReceived;
- if (lp)
- return ((lr < lp)&&((lp - lr) > ZT_PING_UNANSWERED_AFTER));
- return false;
- }
-
- /**
* @return Human-readable address and other information about this path, some computed as of current time
*/
inline std::string toString() const
diff --git a/node/Peer.cpp b/node/Peer.cpp
index b9b9b0c7..fa8ab3e8 100644
--- a/node/Peer.cpp
+++ b/node/Peer.cpp
@@ -69,6 +69,8 @@ void Peer::receive(
Packet::Verb inReVerb,
uint64_t now)
{
+ *((const_cast<uint64_t *>(&(_r->timeOfLastPacketReceived)))) = now;
+
if (!hops) { // direct packet
{
Mutex::Lock _l(_lock);
@@ -91,6 +93,7 @@ void Peer::receive(
}
// Announce multicast LIKEs to peers to whom we have a direct link
+ // Lock can't be locked here or it'll recurse and deadlock.
if ((now - _lastAnnouncedTo) >= ((ZT_MULTICAST_LIKE_EXPIRE / 2) - 1000)) {
_lastAnnouncedTo = now;
_r->sw->announceMulticastGroups(SharedPtr<Peer>(this));
@@ -107,19 +110,23 @@ bool Peer::send(const RuntimeEnvironment *_r,const void *data,unsigned int len,u
{
Mutex::Lock _l(_lock);
- if (_paths.empty())
+ std::vector<Path>::iterator p(_paths.begin());
+ if (p == _paths.end()) {
+ TRACE("send to %s failed: no paths available",_id.address().toString().c_str());
return false;
-
- uint64_t bestPathLastReceived = 0;
- std::vector<Path>::iterator bestPath;
- for(std::vector<Path>::iterator p(_paths.begin());p!=_paths.end();++p) {
+ }
+ uint64_t bestPathLastReceived = p->lastReceived();
+ std::vector<Path>::iterator bestPath = p;
+ while (++p != _paths.end()) {
uint64_t lr = p->lastReceived();
- if (lr >= bestPathLastReceived) {
+ if (lr > bestPathLastReceived) {
bestPathLastReceived = lr;
bestPath = p;
}
}
+ TRACE("send to %s: using path: %s",_id.address().toString().c_str(),bestPath->toString().c_str());
+
if (_r->sm->send(bestPath->address(),bestPath->tcp(),data,len)) {
bestPath->sent(now);
return true;
@@ -145,21 +152,30 @@ bool Peer::sendPing(const RuntimeEnvironment *_r,uint64_t now,bool firstSinceRes
{
bool sent = false;
SharedPtr<Peer> self(this);
+
Mutex::Lock _l(_lock);
- bool allPingsUnanswered;
+ // NOTE: this will never ping a peer that has *only* TCP paths. Right
+ // now there's never such a thing as TCP is only for failover.
+
+ bool pingTcp;
if (!firstSinceReset) {
- allPingsUnanswered = true;
+ // Do not use TCP if one of our UDP endpoints has answered recently.
+ uint64_t lastPing = 0;
+ uint64_t lastDirectReceive = 0;
+
for(std::vector<Path>::iterator p(_paths.begin());p!=_paths.end();++p) {
- if (!p->pingUnanswered(now)) {
- allPingsUnanswered = false;
- break;
- }
+ lastPing = std::max(lastPing,p->lastPing());
+ lastDirectReceive = std::max(lastDirectReceive,p->lastReceived());
}
- } else allPingsUnanswered = false;
+
+ pingTcp = ( (lastDirectReceive < lastPing) && ((lastPing - lastDirectReceive) >= ZT_PING_UNANSWERED_AFTER) );
+ } else pingTcp = false;
+
+ TRACE("PING %s (pingTcp==%d)",_id.address().toString().c_str(),(int)pingTcp);
for(std::vector<Path>::iterator p(_paths.begin());p!=_paths.end();++p) {
- if ((allPingsUnanswered)||(!p->tcp())) {
+ if ((pingTcp)||(!p->tcp())) {
if (_r->sw->sendHELLO(self,p->address(),p->tcp())) {
p->sent(now);
p->pinged(now);
diff --git a/node/RuntimeEnvironment.hpp b/node/RuntimeEnvironment.hpp
index ffa6cbdb..228679a1 100644
--- a/node/RuntimeEnvironment.hpp
+++ b/node/RuntimeEnvironment.hpp
@@ -64,7 +64,8 @@ class RuntimeEnvironment
public:
RuntimeEnvironment() :
shutdownInProgress(false),
- timeOfLastNetworkEnvironmentChange(0),
+ timeOfLastResynchronize(0),
+ timeOfLastPacketReceived(0),
log((Logger *)0),
prng((CMWC4096 *)0),
mc((Multicaster *)0),
@@ -90,7 +91,11 @@ public:
volatile bool shutdownInProgress;
// Time network environment (e.g. fingerprint) last changed -- used to determine online-ness
- volatile uint64_t timeOfLastNetworkEnvironmentChange;
+ volatile uint64_t timeOfLastResynchronize;
+
+ // Time last packet was received -- from anywhere. This is updated in Peer::receive()
+ // via an ugly const_cast<>.
+ volatile uint64_t timeOfLastPacketReceived;
/*
* Order matters a bit here. These are constructed in this order
diff --git a/node/SocketManager.cpp b/node/SocketManager.cpp
index 2f6eb4fb..659f448c 100644
--- a/node/SocketManager.cpp
+++ b/node/SocketManager.cpp
@@ -42,8 +42,13 @@
#include <sys/socket.h>
#include <arpa/inet.h>
#include <signal.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
#endif
+// Uncomment to turn off TCP Nagle
+//#define ZT_TCP_NODELAY
+
// Allow us to use the same value on Windows and *nix
#ifndef INVALID_SOCKET
#define INVALID_SOCKET (-1)
@@ -58,8 +63,8 @@
namespace ZeroTier {
#ifdef __WINDOWS__
-// hack from StackOverflow, behaves a bit like pipe() on *nix systems
-static inline void __winpipe(SOCKET fds[2])
+// hack copied from StackOverflow, behaves a bit like pipe() on *nix systems
+static inline void winPipeHack(SOCKET fds[2])
{
struct sockaddr_in inaddr;
struct sockaddr addr;
@@ -98,10 +103,11 @@ SocketManager::SocketManager(
FD_ZERO(&_readfds);
FD_ZERO(&_writefds);
+ // Create a pipe or socket pair that can be used to interrupt select()
#ifdef __WINDOWS__
{
SOCKET tmps[2] = { INVALID_SOCKET,INVALID_SOCKET };
- __winpipe(tmps);
+ winPipeHack(tmps);
_whackSendPipe = tmps[0];
_whackReceivePipe = tmps[1];
u_long iMode=1;
@@ -129,15 +135,12 @@ SocketManager::SocketManager(
_tcpV6ListenSocket = ::socket(AF_INET6,SOCK_STREAM,0);
#ifdef __WINDOWS__
if (_tcpV6ListenSocket == INVALID_SOCKET) {
- _closeSockets();
- throw std::runtime_error("unable to create IPv6 SOCK_STREAM socket");
- }
#else
if (_tcpV6ListenSocket <= 0) {
+#endif
_closeSockets();
throw std::runtime_error("unable to create IPv6 SOCK_STREAM socket");
}
-#endif
#ifdef __WINDOWS__
{
@@ -178,15 +181,12 @@ SocketManager::SocketManager(
_tcpV4ListenSocket = ::socket(AF_INET,SOCK_STREAM,0);
#ifdef __WINDOWS__
if (_tcpV4ListenSocket == INVALID_SOCKET) {
- _closeSockets();
- throw std::runtime_error("unable to create IPv4 SOCK_STREAM socket");
- }
#else
if (_tcpV4ListenSocket <= 0) {
+#endif
_closeSockets();
throw std::runtime_error("unable to create IPv4 SOCK_STREAM socket");
}
-#endif
#ifdef __WINDOWS__
{
@@ -368,10 +368,10 @@ bool SocketManager::send(const InetAddress &to,bool tcp,const void *msg,unsigned
::closesocket(s);
return false;
}
- {
- u_long iMode=1;
- ioctlsocket(s,FIONBIO,&iMode);
- }
+ { u_long iMode=1; ioctlsocket(s,FIONBIO,&iMode); }
+#ifdef ZT_TCP_NODELAY
+ { BOOL f = TRUE; setsockopt(s,IPPROTO_TCP,TCP_NODELAY,(char *)&f,sizeof(f)); }
+#endif
#else
int s = ::socket(to.isV4() ? AF_INET : AF_INET6,SOCK_STREAM,0);
if (s <= 0)
@@ -381,6 +381,9 @@ bool SocketManager::send(const InetAddress &to,bool tcp,const void *msg,unsigned
return false;
}
fcntl(s,F_SETFL,O_NONBLOCK);
+#ifdef ZT_TCP_NODELAY
+ { int f = 1; setsockopt(s,IPPROTO_TCP,TCP_NODELAY,(char *)&f,sizeof(f)); }
+#endif
#endif
bool connecting = false;
@@ -392,8 +395,18 @@ bool SocketManager::send(const InetAddress &to,bool tcp,const void *msg,unsigned
}
ts = SharedPtr<Socket>(new TcpSocket(this,s,connecting,to));
- if (!ts->send(to,msg,msglen))
+ if (!ts->send(to,msg,msglen)) {
+ _fdSetLock.lock();
+ FD_CLR(s,&_readfds);
+ FD_CLR(s,&_writefds);
+ _fdSetLock.unlock();
return false;
+ }
+
+ {
+ Mutex::Lock _l(_tcpSockets_m);
+ _tcpSockets[to] = ts;
+ }
_fdSetLock.lock();
FD_SET(s,&_readfds);
@@ -401,10 +414,8 @@ bool SocketManager::send(const InetAddress &to,bool tcp,const void *msg,unsigned
FD_SET(s,&_writefds);
_fdSetLock.unlock();
- {
- Mutex::Lock _l(_tcpSockets_m);
- _tcpSockets[to] = ts;
- }
+ _updateNfds();
+ whack();
return true;
} else if (to.isV4()) {
@@ -453,11 +464,11 @@ void SocketManager::poll(unsigned long timeout)
select(_nfds + 1,&rfds,&wfds,&efds,(timeout > 0) ? &tv : (struct timeval *)0);
if (FD_ISSET(_whackReceivePipe,&rfds)) {
- char tmp;
+ char tmp[16];
#ifdef __WINDOWS__
- ::recv(_whackReceivePipe,&tmp,1,0);
+ ::recv(_whackReceivePipe,&tmp,16,0);
#else
- ::read(_whackReceivePipe,&tmp,1);
+ ::read(_whackReceivePipe,&tmp,16);
#endif
}
@@ -476,10 +487,15 @@ void SocketManager::poll(unsigned long timeout)
try {
_tcpSockets[fromia] = SharedPtr<Socket>(new TcpSocket(this,sockfd,false,fromia));
#ifdef __WINDOWS__
- u_long iMode=1;
- ioctlsocket(sockfd,FIONBIO,&iMode);
+ { u_long iMode=1; ioctlsocket(sockfd,FIONBIO,&iMode); }
+#ifdef ZT_TCP_NODELAY
+ { BOOL f = TRUE; setsockopt(sockfd,IPPROTO_TCP,TCP_NODELAY,(char *)&f,sizeof(f)); }
+#endif
#else
fcntl(sockfd,F_SETFL,O_NONBLOCK);
+#ifdef ZT_TCP_NODELAY
+ { int f = 1; setsockopt(sockfd,IPPROTO_TCP,TCP_NODELAY,(char *)&f,sizeof(f)); }
+#endif
#endif
_fdSetLock.lock();
FD_SET(sockfd,&_readfds);
@@ -509,10 +525,15 @@ void SocketManager::poll(unsigned long timeout)
try {
_tcpSockets[fromia] = SharedPtr<Socket>(new TcpSocket(this,sockfd,false,fromia));
#ifdef __WINDOWS__
- u_long iMode=1;
- ioctlsocket(sockfd,FIONBIO,&iMode);
+ { u_long iMode=1; ioctlsocket(sockfd,FIONBIO,&iMode); }
+#ifdef ZT_TCP_NODELAY
+ { BOOL f = TRUE; setsockopt(sockfd,IPPROTO_TCP,TCP_NODELAY,(char *)&f,sizeof(f)); }
+#endif
#else
fcntl(sockfd,F_SETFL,O_NONBLOCK);
+#ifdef ZT_TCP_NODELAY
+ { int f = 1; setsockopt(sockfd,IPPROTO_TCP,TCP_NODELAY,(char *)&f,sizeof(f)); }
+#endif
#endif
_fdSetLock.lock();
FD_SET(sockfd,&_readfds);
@@ -538,7 +559,7 @@ void SocketManager::poll(unsigned long timeout)
bool closedSockets = false;
{ // grab copy of TCP sockets list because _tcpSockets[] might be changed in a handler
Mutex::Lock _l2(_tcpSockets_m);
- if (_tcpSockets.size()) {
+ if (!_tcpSockets.empty()) {
ts.reserve(_tcpSockets.size());
uint64_t now = Utils::now();
for(std::map< InetAddress,SharedPtr<Socket> >::iterator s(_tcpSockets.begin());s!=_tcpSockets.end();) {
diff --git a/node/Switch.cpp b/node/Switch.cpp
index 2e021a5f..0e58c744 100644
--- a/node/Switch.cpp
+++ b/node/Switch.cpp
@@ -752,13 +752,13 @@ bool Switch::_trySend(const Packet &packet,bool encrypt)
}
}
-#ifdef ZT_TRACE
+/* #ifdef ZT_TRACE
if (via != peer) {
TRACE(">> %s to %s via %s (%d)",Packet::verbString(packet.verb()),peer->address().toString().c_str(),via->address().toString().c_str(),(int)packet.size());
} else {
TRACE(">> %s to %s (%d)",Packet::verbString(packet.verb()),peer->address().toString().c_str(),(int)packet.size());
}
-#endif
+#endif */
return true;
}
diff --git a/node/TcpSocket.cpp b/node/TcpSocket.cpp
index a422dec6..5d475c93 100644
--- a/node/TcpSocket.cpp
+++ b/node/TcpSocket.cpp
@@ -73,7 +73,7 @@ bool TcpSocket::send(const InetAddress &to,const void *msg,unsigned int msglen)
Mutex::Lock _l(_writeLock);
- bool outputWasEnqueued = (_outptr != 0);
+ bool writeInProgress = ((_outptr != 0)||(_connecting));
// Ensure that _outbuf is large enough
unsigned int newptr = _outptr + 5 + msglen;
@@ -102,7 +102,7 @@ bool TcpSocket::send(const InetAddress &to,const void *msg,unsigned int msglen)
for(unsigned int i=0;i<msglen;++i)
_outbuf[_outptr++] = ((const unsigned char *)msg)[i];
- if (!outputWasEnqueued) {
+ if (!writeInProgress) {
// If no output was enqueued before this, try to send() it and then
// start a queued write if any remains after that.
@@ -164,32 +164,22 @@ bool TcpSocket::notifyAvailableForWrite(const SharedPtr<Socket> &self,SocketMana
if (_outptr) {
int n = (int)::send(_sock,(const char *)_outbuf,_outptr,0);
- if (n < 0) {
+ if (n <= 0) {
switch(errno) {
-#ifdef EBADF
- case EBADF:
+#ifdef EAGAIN
+ case EAGAIN:
#endif
-#ifdef EINVAL
- case EINVAL:
+#if defined(EWOULDBLOCK) && ( !defined(EAGAIN) || (EWOULDBLOCK != EAGAIN) )
+ case EWOULDBLOCK:
#endif
-#ifdef ENOTSOCK
- case ENOTSOCK:
+#ifdef EINTR
+ case EINTR:
#endif
-#ifdef ECONNRESET
- case ECONNRESET:
-#endif
-#ifdef EPIPE
- case EPIPE:
-#endif
-#ifdef ENETDOWN
- case ENETDOWN:
-#endif
- return false;
- default:
break;
+ default:
+ return false;
}
- } else if (n > 0)
- memmove(_outbuf,_outbuf + (unsigned int)n,_outptr -= (unsigned int)n);
+ } else memmove(_outbuf,_outbuf + (unsigned int)n,_outptr -= (unsigned int)n);
}
if (!_outptr)
diff --git a/node/Topology.cpp b/node/Topology.cpp
index 2211d126..75784849 100644
--- a/node/Topology.cpp
+++ b/node/Topology.cpp
@@ -50,7 +50,7 @@ Topology::~Topology()
_dumpPeers();
}
-void Topology::setSupernodes(const std::map< Identity,std::vector<InetAddress> > &sn)
+void Topology::setSupernodes(const std::map< Identity,std::vector< std::pair<InetAddress,bool> > > &sn)
{
Mutex::Lock _l(_supernodes_m);
@@ -59,14 +59,13 @@ void Topology::setSupernodes(const std::map< Identity,std::vector<InetAddress> >
_supernodePeers.clear();
uint64_t now = Utils::now();
- for(std::map< Identity,std::vector<InetAddress> >::const_iterator i(sn.begin());i!=sn.end();++i) {
+ for(std::map< Identity,std::vector< std::pair<InetAddress,bool> > >::const_iterator i(sn.begin());i!=sn.end();++i) {
if (i->first != _r->identity) {
SharedPtr<Peer> p(getPeer(i->first.address()));
if (!p)
p = addPeer(SharedPtr<Peer>(new Peer(_r->identity,i->first)));
- for(std::vector<InetAddress>::const_iterator j(i->second.begin());j!=i->second.end();++j) {
- p->addPath(Path(*j,false,true));
- }
+ for(std::vector< std::pair<InetAddress,bool> >::const_iterator j(i->second.begin());j!=i->second.end();++j)
+ p->addPath(Path(j->first,j->second,true));
p->use(now);
_supernodePeers.push_back(p);
}
diff --git a/node/Topology.hpp b/node/Topology.hpp
index 0b72197d..bd39d0ec 100644
--- a/node/Topology.hpp
+++ b/node/Topology.hpp
@@ -63,7 +63,7 @@ public:
*
* @param sn Supernodes for this network
*/
- void setSupernodes(const std::map< Identity,std::vector<InetAddress> > &sn);
+ void setSupernodes(const std::map< Identity,std::vector< std::pair<InetAddress,bool> > > &sn);
/**
* Add a peer to database
@@ -104,15 +104,6 @@ public:
void saveIdentity(const Identity &id);
/**
- * @return Current network supernodes
- */
- inline std::map< Identity,std::vector<InetAddress> > supernodes() const
- {
- Mutex::Lock _l(_supernodes_m);
- return _supernodes;
- }
-
- /**
* @return Vector of peers that are supernodes
*/
inline std::vector< SharedPtr<Peer> > supernodePeers() const
@@ -313,7 +304,7 @@ private:
std::map< Address,SharedPtr<Peer> > _activePeers;
Mutex _activePeers_m;
- std::map< Identity,std::vector<InetAddress> > _supernodes;
+ std::map< Identity,std::vector< std::pair<InetAddress,bool> > > _supernodes;
std::set< Address > _supernodeAddresses;
std::vector< SharedPtr<Peer> > _supernodePeers;
Mutex _supernodes_m;
diff --git a/node/UdpSocket.cpp b/node/UdpSocket.cpp
index 8fce9588..115298e9 100644
--- a/node/UdpSocket.cpp
+++ b/node/UdpSocket.cpp
@@ -48,6 +48,9 @@
#include <signal.h>
#endif
+// Uncomment to intentionally break UDP in order to test TCP fallback
+#define ZT_BREAK_UDP
+
namespace ZeroTier {
UdpSocket::~UdpSocket()
@@ -66,6 +69,9 @@ bool UdpSocket::send(const InetAddress &to,const void *msg,unsigned int msglen)
bool UdpSocket::sendWithHopLimit(const InetAddress &to,const void *msg,unsigned int msglen,int hopLimit)
{
+#ifdef ZT_BREAK_UDP
+ return true;
+#else
if (hopLimit <= 0)
hopLimit = 255;
if (to.isV6()) {
@@ -87,6 +93,7 @@ bool UdpSocket::sendWithHopLimit(const InetAddress &to,const void *msg,unsigned
return ((int)sendto(_sock,msg,msglen,0,to.saddr(),to.saddrLen()) == (int)msglen);
#endif
}
+#endif
}
bool UdpSocket::notifyAvailableForRead(const SharedPtr<Socket> &self,SocketManager *sm)
@@ -97,7 +104,9 @@ bool UdpSocket::notifyAvailableForRead(const SharedPtr<Socket> &self,SocketManag
int n = (int)recvfrom(_sock,(char *)(buf.data()),ZT_SOCKET_MAX_MESSAGE_LEN,0,from.saddr(),&salen);
if (n > 0) {
buf.setSize((unsigned int)n);
+#ifndef ZT_BREAK_UDP
sm->handleReceivedPacket(self,from,buf);
+#endif
}
return true;
}
diff --git a/node/Utils.cpp b/node/Utils.cpp
index fe153af2..95b66337 100644
--- a/node/Utils.cpp
+++ b/node/Utils.cpp
@@ -207,11 +207,11 @@ void Utils::getSecureRandom(void *buf,unsigned int bytes)
{
int fd = ::open("/dev/urandom",O_RDONLY);
if (fd < 0) {
- fprintf(stderr,"FATAL ERROR: unable to open /dev/urandom%s",ZT_EOL_S);
+ fprintf(stderr,"FATAL ERROR: unable to open /dev/urandom (%d)"ZT_EOL_S,errno);
exit(-1);
}
if ((int)::read(fd,randbuf,sizeof(randbuf)) != (int)sizeof(randbuf)) {
- fprintf(stderr,"FATAL ERROR: unable to read from /dev/urandom%s",ZT_EOL_S);
+ fprintf(stderr,"FATAL ERROR: unable to read from /dev/urandom"ZT_EOL_S);
exit(-1);
}
::close(fd);
generated by cgit v1.2.3 (git 2.39.1) at 2025-04-21 20:04:14 +0000