Wsarecv: an existing connection was forcefully closed by the remote host

go Connection to database always disconnected remotely

func TestOpenCA(t *testing.T) {    var source = "host=xx.xx.xx.xx user=xxx password=xxx dbname=xxx port=5432 sslmode=disable"    //var source = "host=127.0.0.1 user=postgres password=xxx dbname=xx port=5432 sslmode=disable"    db, err := sql.Open("postgres", source)    if err != nil {        t.Error(err)    }    var sql = `INSERT INTO "test" (a,b,c) VALUES("1","2","3") ,("1","2","3") ;`    fmt.Println(db.Ping())    db.SetConnMaxIdleTime(10 * time.Minute)    db.SetConnMaxLifetime(10 * time.Minute)    var errIdx = 0    for i := 0; i < 100; i++ {        _, err := db.ExecContext(context.Background(), sql)        if err != nil {            errIdx += 1            //t.Error(err)            //return        }        //fmt.Println(c.LastInsertId())    }    fmt.Println(errIdx)    defer db.Close()    fmt.Scanln()}

It's the code , Local database inserts are successful , The database of the server is remotely , Always report errors wsarecv: An existing connection was forcibly closed by the remote host, The Internet should be OK ,sql Also no problem , It's just that this error is reported frequently .