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packets: reset read deadline before conn check #964

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merged 2 commits into from May 7, 2019
Merged

packets: reset read deadline before conn check #964

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a9189a7
packets: reset read deadline before conn check
vmg May 7, 2019
6ee19d4
packets: set a 0 deadline
vmg May 7, 2019
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12 changes: 11 additions & 1 deletion packets.go
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Expand Up @@ -108,7 +108,17 @@ func (mc *mysqlConn) writePacket(data []byte) error {
if mc.rawConn != nil {
conn = mc.rawConn
}
if err := connCheck(conn); err != nil {
var err error
// If this connection has a ReadTimeout which we've been setting on
// reads, reset it to its default value before we attempt a non-blocking
// read, otherwise the scheduler will just time us out before we can read
if mc.cfg.ReadTimeout != 0 {
err = conn.SetReadDeadline(time.Time{})
}
if err == nil {
err = connCheck(conn)
}
if err != nil {
errLog.Print("closing bad idle connection: ", err)
mc.Close()
return driver.ErrBadConn
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