This supports IPv6 introducers.
This requires that Alice (the requester) include the IPv4 address in the RelayRequest
when sent over IPv6, and that Bob (the introducer) uses that address instead of
the source address.
IPv6 address will be published in ihost[0-2].
This was specified as of 0.9.24 but never implemented by Java or i2pd.
Bob-Charlie and Alice-Charlie comms must still be over IPv4.
WIP, not fully tested.
IPv6 introductions is part 2, TBD.
ref: http://zzz.i2p/topics/3060
WIP, disabled by default for now, to be enabled before relese
Add caps to NTCP2 when in hidden mode or firewalled
Add SSU address and caps when in hidden mode
Add 4 cap to introducer address
Other cases todo; ref: http://zzz.i2p/topics/3050
When hidden, store last IP address in config,
calling replaceCurrentExternalAddress(), and IP change event logging;
wasn't done before
Peer test tries only one peer every 5 minutes, and uses a store of
the peer's own router info, which is not helpful.
Peer test records its result as a dbLookup success/failure,
but for the peers that are not floodfill, this stat is useless.
The tunnel test is disabled by default except for hidden mode.
The tunnel test response time stat uses a large amount of memory (5 rates)
and has apparently never been used since it was added in 2004.
There's also a separate tunnel test time average variable, separate
from the stat, that is also unused.
Each is disabled with a separate hardcoded config,
pending evaluation of whether and how to make the tests useful
and where to effectively use the result for peer selection.
Rename ShortTunnelBuildReplyMessage to OutboundTunnelBuildReplyMessage (type 26)
Add InboundTunnelBuildMessage (type 27)
Add methods for plaintext record
Update readMessage() and writeMessageBody()
Fix calculateWrittenLength()
Update javadocs
WIP, untested, not hooked in yet
Remove blanket unreachable test for inbound tunnels, replace with reachable test for IBGW only
Retain inbound reachable test for hidden routers
Retain inbound reachable test for first hour of uptime
Add outbound reachable test for first hour of uptime
Add locally-unreachable test for outbound tunnels (was inbound only)
Minor cleanups
Log tweaks
List updated using the Freedom in the World Index 2020
Force hidden mode routers to LU
Don't publish stats in first hour of uptime
Add H.323 to invalid ports list
Improve crashed message in event log
As of 0.9.49. 0.9.48-x dev builds will not rekey.
New installs only.
Existing install rekey probability: 1 in 128
To be increased in later releases, see proposal 156 for details.
This partially fixes the issue of packets not being retransmitted
before they expire in 10 seconds, introduced in 0.9.48 as reported by
jogger at http://zzz.i2p/topics/3003
Fast retransmit was also suggested by jogger as a solution and discussed in that thread.
This code is based on the requirements for TCP fast retransmit
as specified in RFC 5681 but cannot precisely follow the RFC
as UDP messages can be dropped without affecting later messages:
- nack counter is per-message, not per-connection
- some interactions with the retransmit timer when in fast retx mode
- msg expiration is currently 10s but max RTO is 60s
- interactions with individual fragment transmission implemented in 0.9.48-5
- this is a sender-side fix but it depends on far-end ack resend strategy
Maintain a local message sequence number and store
it in OMF, previously unused as codel is disabled
Removed acked messages from _outboundMessages as usual,
but stores message and seq. numbers in a LinkedHashMap,
so we may interpret additional acks as nacks.
Calculate the highest-acked seq. number for every incoming packet.
Marks messages older than highest acked as nacked
Fast-retransmits after 3 nacks
Window and SST adjustments per RFC 5681 sec. 2.4
Reduce resend ack quantity and timeout to improve odds of receiving "nacks"
Disable wakeup of OMF from IMF; should not be needed now that PS calls nudge()
PS.acked(partial) now returns true if any fragment was acked, not if complete
Log tweaks
Still todo: possible additional changes to ack resend strategy;
possible parameter adjustments including msg expiration;
confirm that OMF wakeup in IMF is not required;
further testing and cleanups;
take additional ideas from alternative proposal in MR !8;
stat tweaks;
find related tickets to close
Reviewed by and contains code from zlatinb in MR !8
This builds on several previous SSU improvements; see #2427 for a list.
ref: gitlab MRs !8!9!10!11
