go连接数据库远程总是断开

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()
}

上面是代码，本地数据库插入都是成功的，远程了服务器的数据库，就总是报错 wsarecv: An existing connection was forcibly closed by the remote host，网路应该是没问题的，sql也没问题，就是频繁报这个错。