* move host/relay to host/autorelay
* move autorelay wrapper host to package
* support v2 relays in autorelay
* test autorelay with both v1 and v2 relays
* fix test race
* go mod tidy examples/pubsub/chat
static checker complains; sigh.
* refactor reservation refresh loop
* merge background and refresh goroutines
* handle pushes synchronously from reservation refresh failures
* make connmanager tag a package level constant
* dont sleep to wait for identify, use IdentifyWait
* make relay protocol ids package-level constants
* add comment about v1 relays not having reservations
* use errgrp instead of WaitGroup with atomic int
* fix variable capture bug
* go get x/sync
* hole punching protocol
* implement the new retry logic (opening a new stream per hole punch)
* rename the holepunch.HolePunchService to holepunch.Service
* remove stream handler when closing
* remove misleading comment from protobuf, add link to spec
* remove unnecessary netNotifiee.HolePunchService
* simplify receiving from the timer channel
* don't defer the closing of the hole punching stream
* only accept hole punch streams from relayed peers
* refactor error logging
* fix incorrect counting of incoming hole punch attempts
* rename HolePunch to DirectConnect
* fix usage of the wait group to close the hole punch service
* use a gc to the garbage collect the holepunch tracer
* check directionality of connection when accepting the hole punch stream
* add comment why we only call Connect once
* move deduplication logic to the holepunch service
Co-authored-by: aarshkshah1992 <aarshkshah1992@gmail.com>
fix#7947
move `BasicHost.AutoNat` to a private field (it has no public method and shouldn't be accessed afaik.
Instead add a setter for config that sets it while holding the address mutex to prevent reads of the
field at the same time.
Currently, the AutoNAT dialer spins up a full host with identify, ping, etc.
this switches to a blankhost.
This also avoids running a relay, listening on transports, etc (regression).