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SSU: More work on introducer expiration (proposal 133)

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This commit is contained in:
zzz
2017-03-20 22:31:32 +00:00
parent b9a7a76174
commit 13ad5d72ae
3 changed files with 12 additions and 4 deletions
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6
core/java/src/net/i2p/data/DataHelper.java
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@ -68,9 +68,9 @@ public class DataHelper {
"cost", "host", "port",
// SSU RouterAddress options
"key", "mtu",
"ihost0", "iport0", "ikey0", "itag0",
"ihost1", "iport1", "ikey1", "itag1",
"ihost2", "iport2", "ikey2", "itag2",
"ihost0", "iport0", "ikey0", "itag0", "iexp0",
"ihost1", "iport1", "ikey1", "itag1", "iexp1",
"ihost2", "iport2", "ikey2", "itag2", "iexp2",
// RouterInfo options
"caps", "coreVersion", "netId", "router.version",
"netdb.knownLeaseSets", "netdb.knownRouters",

3
router/java/src/net/i2p/router/transport/udp/PacketBuilder.java
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@ -1215,17 +1215,20 @@ class PacketBuilder {
UDPAddress addr = state.getRemoteAddress();
int count = addr.getIntroducerCount();
List<UDPPacket> rv = new ArrayList<UDPPacket>(count);
long cutoff = _context.clock().now() + 5*60*1000L;
for (int i = 0; i < count; i++) {
InetAddress iaddr = addr.getIntroducerHost(i);
int iport = addr.getIntroducerPort(i);
byte ikey[] = addr.getIntroducerKey(i);
long tag = addr.getIntroducerTag(i);
long exp = addr.getIntroducerExpiration(i);
// let's not use an introducer on a privileged port, sounds like trouble
if (ikey == null || !TransportUtil.isValidPort(iport) ||
iaddr == null || tag <= 0 ||
// must be IPv4 for now as we don't send Alice IP/port, see below
iaddr.getAddress().length != 4 ||
(!_transport.isValid(iaddr.getAddress())) ||
(exp > 0 && exp < cutoff) ||
(Arrays.equals(iaddr.getAddress(), _transport.getExternalIP()) && !_transport.allowLocal())) {
if (_log.shouldLog(Log.WARN))
_log.warn("Cannot build a relay request to " + state.getRemoteIdentity().calculateHash()

7
router/java/src/net/i2p/router/transport/udp/UDPTransport.java
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@ -203,6 +203,7 @@ public class UDPTransport extends TransportImpl implements TimedWeightedPriority
private static final int MIN_PEERS_IF_HAVE_V6 = 30;
/** minimum peers volunteering to be introducers if we need that */
private static final int MIN_INTRODUCER_POOL = 5;
private static final long INTRODUCER_EXPIRATION_MARGIN = 20*60*1000L;
private static final int[] BID_VALUES = { 15, 20, 50, 65, 80, 95, 100, 115, TransportBid.TRANSIENT_FAIL };
private static final int FAST_PREFERRED_BID = 0;
@ -1558,17 +1559,21 @@ public class UDPTransport extends TransportImpl implements TimedWeightedPriority
RouterAddress addr = getCurrentAddress(false);
if (introducersRequired()) {
UDPAddress ua = new UDPAddress(addr);
long now = _context.clock().now();
int valid = 0;
for (int i = 0; i < ua.getIntroducerCount(); i++) {
// warning: this is only valid as long as we use the ident hash as their key.
byte[] key = ua.getIntroducerKey(i);
if (key.length != Hash.HASH_LENGTH)
continue;
long exp = ua.getIntroducerExpiration(i);
if (exp > 0 && exp < now + INTRODUCER_EXPIRATION_MARGIN)
continue;
PeerState peer = getPeerState(new Hash(key));
if (peer != null)
valid++;
}
long sinceSelected = _context.clock().now() - _introducersSelectedOn;
long sinceSelected = now - _introducersSelectedOn;
if (valid >= PUBLIC_RELAY_COUNT) {
// try to shift 'em around every 10 minutes or so
if (sinceSelected > 17*60*1000) {