* close peer's connection to avoid fd leak
Fixes#2967
* rename peer#Addr to RemoteAddr
* fix test
* fixes after Ethan's review
* bring back the check
* changelog entry
* write a test for switch#acceptRoutine
* increase timeouts? :(
* remove extra assertNPeersWithTimeout
* simplify test
* assert number of peers (just to be safe)
* Cleanup in OnStop
* run tests with verbose flag on CircleCI
* spawn a reading routine to prevent connection from closing
* get port from the listener
random port is faster, but often results in
```
panic: listen tcp 127.0.0.1:44068: bind: address already in use [recovered]
panic: listen tcp 127.0.0.1:44068: bind: address already in use
goroutine 79 [running]:
testing.tRunner.func1(0xc0001bd600)
/usr/local/go/src/testing/testing.go:792 +0x387
panic(0x974d20, 0xc0001b0500)
/usr/local/go/src/runtime/panic.go:513 +0x1b9
github.com/tendermint/tendermint/p2p.MakeSwitch(0xc0000f42a0, 0x0, 0x9fb9cc, 0x9, 0x9fc346, 0xb, 0xb42128, 0x0, 0x0, 0x0, ...)
/home/vagrant/go/src/github.com/tendermint/tendermint/p2p/test_util.go:182 +0xa28
github.com/tendermint/tendermint/p2p.MakeConnectedSwitches(0xc0000f42a0, 0x2, 0xb42128, 0xb41eb8, 0x4f1205, 0xc0001bed80, 0x4f16ed)
/home/vagrant/go/src/github.com/tendermint/tendermint/p2p/test_util.go:75 +0xf9
github.com/tendermint/tendermint/p2p.MakeSwitchPair(0xbb8d20, 0xc0001bd600, 0xb42128, 0x2f7, 0x4f16c0)
/home/vagrant/go/src/github.com/tendermint/tendermint/p2p/switch_test.go:94 +0x4c
github.com/tendermint/tendermint/p2p.TestSwitches(0xc0001bd600)
/home/vagrant/go/src/github.com/tendermint/tendermint/p2p/switch_test.go:117 +0x58
testing.tRunner(0xc0001bd600, 0xb42038)
/usr/local/go/src/testing/testing.go:827 +0xbf
created by testing.(*T).Run
/usr/local/go/src/testing/testing.go:878 +0x353
exit status 2
FAIL github.com/tendermint/tendermint/p2p 0.350s
```
* p2p/conn: FlushStop. Use in pex. Closes#2092
In seed mode, we call StopPeer immediately after Send.
Since flushing msgs to the peer happens in the background,
the peer connection is often closed before the messages are
actually sent out. The new FlushStop method allows all msgs
to first be written and flushed out on the conn before it is closed.
* fix dummy peer
* typo
* fixes from review
* more comments
* ensure pex doesn't call FlushStop more than once
FlushStop is not safe to call more than once,
but we call it from Receive in a go-routine so Receive
doesn't block.
To ensure we only call it once, we use the lastReceivedRequests
map - if an entry already exists, then FlushStop should already have
been called and we can return.
* p2p: NodeInfo is an interface
* (squash) fixes from review
* (squash) more fixes from review
* p2p: remove peerConn.HandshakeTimeout
* p2p: NodeInfo is two interfaces. Remove String()
* fixes from review
* remove test code from peer.RemoteIP()
* p2p: remove peer.OriginalAddr(). See #2618
* use a mockPeer in peer_set_test.go
* p2p: fix testNodeInfo naming
* p2p: remove unused var
* remove testRandNodeInfo
* fix linter
* fix retry dialing self
* fix rpc
