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GitHub issue #235, and I also see no reason not to communicate with people from other Worlds.

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This commit is contained in:
Adam Ierymenko 2015-10-15 07:22:17 -07:00
parent a775ee7d31
commit 2debde3451
2 changed files with 20 additions and 16 deletions
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5
node/Constants.hpp
View File

@ -347,6 +347,11 @@
*/
#define ZT_MAX_BRIDGE_SPAM 16
/**
* Maximum number of endpoints to contact per address type (to limit pushes like GitHub issue #235)
*/
#define ZT_PUSH_DIRECT_PATHS_MAX_ENDPOINTS_PER_TYPE 8
/**
* A test pseudo-network-ID that can be joined
*

31
node/IncomingPacket.cpp
View File

@ -296,22 +296,18 @@ bool IncomingPacket::_doHELLO(const RuntimeEnvironment *RR)
outp.append((uint16_t)ZEROTIER_ONE_VERSION_REVISION);
_remoteAddress.serialize(outp);
if ((worldId != ZT_WORLD_ID_NULL)&&(worldId == RR->topology->worldId())) {
if (RR->topology->worldTimestamp() > worldTimestamp) {
World w(RR->topology->world());
const unsigned int sizeAt = outp.size();
outp.addSize(2); // make room for 16-bit size field
w.serialize(outp,false);
outp.setAt<uint16_t>(sizeAt,(uint16_t)(outp.size() - (sizeAt + 2)));
} else {
outp.append((uint16_t)0); // no world update needed
}
outp.armor(peer->key(),true);
RR->node->putPacket(_localAddress,_remoteAddress,outp.data(),outp.size());
if ((worldId != ZT_WORLD_ID_NULL)&&(RR->topology->worldTimestamp() > worldTimestamp)&&(worldId == RR->topology->worldId())) {
World w(RR->topology->world());
const unsigned int sizeAt = outp.size();
outp.addSize(2); // make room for 16-bit size field
w.serialize(outp,false);
outp.setAt<uint16_t>(sizeAt,(uint16_t)(outp.size() - (sizeAt + 2)));
} else {
TRACE("dropped HELLO from %s(%s): world ID mismatch: peer is %llu and we are %llu",source().toString().c_str(),_remoteAddress.toString().c_str(),worldId,RR->topology->worldId());
outp.append((uint16_t)0); // no world update needed
}
outp.armor(peer->key(),true);
RR->node->putPacket(_localAddress,_remoteAddress,outp.data(),outp.size());
} catch ( ... ) {
TRACE("dropped HELLO from %s(%s): unexpected exception",source().toString().c_str(),_remoteAddress.toString().c_str());
}
@ -867,6 +863,7 @@ bool IncomingPacket::_doPUSH_DIRECT_PATHS(const RuntimeEnvironment *RR,const Sha
try {
unsigned int count = at<uint16_t>(ZT_PACKET_IDX_PAYLOAD);
unsigned int ptr = ZT_PACKET_IDX_PAYLOAD + 2;
unsigned int v4Count = 0,v6Count = 0;
while (count--) { // if ptr overflows Buffer will throw
// TODO: some flags are not yet implemented
@ -882,14 +879,16 @@ bool IncomingPacket::_doPUSH_DIRECT_PATHS(const RuntimeEnvironment *RR,const Sha
InetAddress a(field(ptr,4),4,at<uint16_t>(ptr + 4));
if ( ((flags & 0x01) == 0) && (Path::isAddressValidForPath(a)) ) {
TRACE("attempting to contact %s at pushed direct path %s",peer->address().toString().c_str(),a.toString().c_str());
peer->attemptToContactAt(RR,_localAddress,a,RR->node->now());
if (v4Count++ < ZT_PUSH_DIRECT_PATHS_MAX_ENDPOINTS_PER_TYPE)
peer->attemptToContactAt(RR,_localAddress,a,RR->node->now());
}
} break;
case 6: {
InetAddress a(field(ptr,16),16,at<uint16_t>(ptr + 16));
if ( ((flags & 0x01) == 0) && (Path::isAddressValidForPath(a)) ) {
TRACE("attempting to contact %s at pushed direct path %s",peer->address().toString().c_str(),a.toString().c_str());
peer->attemptToContactAt(RR,_localAddress,a,RR->node->now());
if (v6Count++ < ZT_PUSH_DIRECT_PATHS_MAX_ENDPOINTS_PER_TYPE)
peer->attemptToContactAt(RR,_localAddress,a,RR->node->now());
}
} break;
}