ctx := context.Background()
for {
conn, err := l.listener.Accept()
if err != nil {
// Close() was probably called.
// 想要走到这里,执行这行代码
connRefuse.Add(1)
return
}
acceptTime := time.Now()
connectionID := l.connectionID
l.connectionID++
connCount.Add(1)
connAccept.Add(1)
go func() {
if l.PreHandleFunc != nil {
conn, err = l.PreHandleFunc(ctx, conn, connectionID)
if err != nil {
log.Errorf("mysql_server pre hook: %s", err)
return
}
}
l.handle(conn, connectionID, acceptTime)
}()
}