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p2p: file descriptor leaks (#3150)

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* 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
```
This commit is contained in:
Anton Kaliaev
2019-01-22 22:23:18 +04:00
committed by Ethan Buchman
parent 3362da0a69
commit 2449bf7300
12 changed files with 170 additions and 42 deletions
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22
p2p/test_util.go
View File

@@ -247,17 +247,35 @@ func testNodeInfo(id ID, name string) NodeInfo {
}
func testNodeInfoWithNetwork(id ID, name, network string) NodeInfo {
port, err := getFreePort()
if err != nil {
panic(err)
}
return DefaultNodeInfo{
ProtocolVersion: defaultProtocolVersion,
ID_: id,
ListenAddr: fmt.Sprintf("127.0.0.1:%d", cmn.RandIntn(64512)+1023),
ListenAddr: fmt.Sprintf("127.0.0.1:%d", port),
Network: network,
Version: "1.2.3-rc0-deadbeef",
Channels: []byte{testCh},
Moniker: name,
Other: DefaultNodeInfoOther{
TxIndex: "on",
RPCAddress: fmt.Sprintf("127.0.0.1:%d", cmn.RandIntn(64512)+1023),
RPCAddress: fmt.Sprintf("127.0.0.1:%d", port),
},
}
}
func getFreePort() (int, error) {
addr, err := net.ResolveTCPAddr("tcp", "localhost:0")
if err != nil {
return 0, err
}
l, err := net.ListenTCP("tcp", addr)
if err != nil {
return 0, err
}
defer l.Close()
return l.Addr().(*net.TCPAddr).Port, nil
}