【已解決】Failed to connect to 172.16.0.26 port 8787: Address already in use

云端更新于2022-07-21

新整個(gè)webman，放到Linux上，寫(xiě)個(gè)簡(jiǎn)單的方法：

public function index(Request $request)
{
    return response('hello webman');
}

windows本地，寫(xiě)個(gè)for循環(huán)：

for ($i = 0; $i < 10000; $i++) {
    echo '循環(huán)：' . $i . '=>' . request_get($url) . PHP_EOL;
}

request_get方法：

function request_get(string $url, int $timeout = 10)
{
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_HEADER, false);
    curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);

    $rs = curl_exec($ch);
    if (curl_errno($ch)) {
        $err_msg = curl_error($ch);
        curl_close($ch);
        return json_encode(['code' => 50, 'msg' => $err_msg]);
    } else {
        curl_close($ch);
        return $rs;
    }
}

結(jié)果后期提示：

Failed to connect to 172.16.0.26 port 8787: Address already in use

相關(guān)圖片：

這是什么原因呢？還請(qǐng)解惑。

 2487  1 1

1個(gè)回答

xiuwang 2022-07-21

curl是短連接，每次請(qǐng)求會(huì)占用本地一個(gè)端口，請(qǐng)求完畢后這個(gè)端口不會(huì)立刻釋放。本地端口有限，當(dāng)本地端口被快速用完就會(huì)報(bào)這個(gè) Address already in use 錯(cuò)誤了。
curl用長(zhǎng)連接，也就是不主動(dòng)curl_close，這樣就不會(huì)不斷的消耗本地端口，應(yīng)該就不會(huì)報(bào)錯(cuò)了，request_get改成

function request_get(string $url, int $timeout = 10)
{
    static $ch;
    $ch = $ch ?: curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_HEADER, false);
    curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);

    $rs = curl_exec($ch);
    if (curl_errno($ch)) {
        $err_msg = curl_error($ch);
        //curl_close($ch);
        return json_encode(['code' => 50, 'msg' => $err_msg]);
    } else {
        //curl_close($ch);
        return $rs;
    }
}