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abci/server: recover from app panics in socket server (#3809)

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fixes #3800
This commit is contained in:
Roman Useinov
2019-07-17 06:37:27 +02:00
committed by Anton Kaliaev
parent fee26405e8
commit a76c503dc6
2 changed files with 12 additions and 1 deletions
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1
CHANGELOG_PENDING.md
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@ -18,5 +18,6 @@ program](https://hackerone.com/tendermint).
### FEATURES:
### IMPROVEMENTS:
- [abci] \#3809 Recover from application panics in `server/socket_server.go` to allow socket cleanup (@ruseinov)
### BUG FIXES:

12
abci/server/socket_server.go
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@ -146,6 +146,16 @@ func (s *SocketServer) waitForClose(closeConn chan error, connID int) {
func (s *SocketServer) handleRequests(closeConn chan error, conn net.Conn, responses chan<- *types.Response) {
var count int
var bufReader = bufio.NewReader(conn)
defer func() {
// make sure to recover from any app-related panics to allow proper socket cleanup
r := recover()
if r != nil {
closeConn <- fmt.Errorf("recovered from panic: %v", r)
s.appMtx.Unlock()
}
}()
for {
var req = &types.Request{}
@ -154,7 +164,7 @@ func (s *SocketServer) handleRequests(closeConn chan error, conn net.Conn, respo
if err == io.EOF {
closeConn <- err
} else {
closeConn <- fmt.Errorf("Error reading message: %v", err.Error())
closeConn <- fmt.Errorf("error reading message: %v", err)
}
return
}