# 发起请求

## 基础查询

基础查询只需要传递 `用户名` 和 `密码`。不需要其他参数。此类查询将导致请求从随机 IP 地址（代理）发出。每个新请求都将使用不同的代理。

#### 代码示例

在此示例中，对 `ip.oxylabs.io` 从随机 IP 执行：

{% tabs %}
{% tab title="cURL" %}

```shell
curl -x pr.oxylabs.io:7777 -U "customer-USERNAME:PASSWORD" https://ip.oxylabs.io/location
```

{% endtab %}

{% tab title="PHP" %}

```php
<?php
$username = 'USERNAME';
$password = 'PASSWORD';
$proxy = 'pr.oxylabs.io:7777';
$query = curl_init('https://ip.oxylabs.io/location');
curl_setopt($query, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($query, CURLOPT_PROXY, "http://$proxy");
curl_setopt($query, CURLOPT_PROXYUSERPWD, "customer-$username:$password");
$output = curl_exec($query);
curl_close($query);
if ($output)
    echo $output;
?>
```

{% endtab %}

{% tab title="Python" %}

```python
import urllib.request
import random
username = 'USERNAME'
密码 = 'PASSWORD'
entry = ('http://customer-%s:%s@pr.oxylabs.io:7777' %
    (username, password))
query = urllib.request.ProxyHandler({
    'http': entry,
    'https': entry,
})
execute = urllib.request.build_opener(query)
print(execute.open('https://ip.oxylabs.io/location').read())
```

{% endtab %}

{% tab title="Java" %}

```java
package example;

import org.apache.http.HttpHost;
import org.apache.http.client.fluent.*;

public class Example {
    public static void main(String[] args) throws Exception {
        HttpHost entry = new HttpHost("pr.oxylabs.io", 7777);
        String query = Executor.newInstance()
            .auth(entry, "customer-USERNAME", "PASS")
            .execute(Request.Get("http://ip.oxylabs.io/location").viaProxy(entry))
            .returnContent().asString();
        System.out.println(query);
    }
}
```

{% endtab %}

{% tab title="C#" %}

```csharp
using System;
using System.Net;

类 Example
{
    静态 void Main()
    {
        var client = new WebClient();
        client.Proxy = new WebProxy("pr.oxylabs.io:7777");
        client.Proxy.Credentials = new NetworkCredential("customer-USERNAME", "PASSWORD");
        Console.WriteLine(client.DownloadString("https://ip.oxylabs.io/location"));
    }
c
```

{% endtab %}

{% tab title="Ruby" %}

```ruby
require 'uri'
require 'net/http'

uri = URI.parse('https://ip.oxylabs.io/location')
proxy = Net::HTTP::Proxy('pr.oxylabs.io', 7777, 'customer-USERNAME', 'PASSWORD')

req = Net::HTTP::Get.new(uri.path)

result = proxy.start(uri.host,uri.port) do |http|
    http.request(req)
end

puts result.body
```

{% endtab %}
{% endtabs %}

单个 backconnect 代理允许您通过用户名中的附加参数选择特定国家/地区的代理。此方法也支持会话控制。以下是凭据结构示例：

`customer-USERNAME-cc-US-sessid-abcde12345:PASSWORD`

#### 查询参数

| 参数                                                        | 描述                                                                                                                                                                                                                                                                            |
| --------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| <mark style="background-color:green;">**customer**</mark> | 用户名                                                                                                                                                                                                                                                                           |
| `cc`                                                      | 不区分大小写的 2 位国家/地区代码 [**3166-1 alpha-2 格式**](https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2)。例如， `DE` 表示德国， `GB` 表示英国， `TH` 表示泰国。您可以在此处找到有关如何使用按国家/地区指定的代理的更多详细信息 [**这里**](/products/cn/dai-li/mobile-proxies/location-settings/country.md#country-specific-entry-nodes).     |
| `城市`                                                      | 不区分大小写的英文城市名称。此参数必须与 `cc` 一起使用以提高准确性，例如， `cc-GB-city-london` 表示英国伦敦； `cc-DE-city-berlin` 表示德国柏林。对于名称超过两个单词的城市，请将空格替换为 `_`，例如， `city-st_petersburg` 或 `city-rio_de_janeiro`。点击 [**这里**](/products/cn/dai-li/mobile-proxies/location-settings/select-city.md) 以获取有关城市级别定位的更多信息。 |
| `st`                                                      | 不区分大小写的美国州名，前面带有 us\_，例如， `us_california`, `us_illinois`. [**点击这里**](/products/cn/dai-li/mobile-proxies/location-settings/select-state.md) 以获取有关州级别定位的更多信息。                                                                                                                   |
| `sessid`                                                  | 会话 ID 用于在后续查询中保持相同的 IP。会话在 10 分钟后过期。之后，会为该会话 ID 分配一个新的 IP 地址。支持随机字符串、0-9 和 A-Z 字符。                                                                                                                                                                                            |
| `sesstime`                                                | 会话时间参数可在特定时间段内保持相同的 IP。最长会话时间为 30 分钟。                                                                                                                                                                                                                                         |
| <mark style="background-color:green;">**密码**</mark>       | 密码                                                                                                                                                                                                                                                                            |

&#x20;     \- 必填参数


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://developers.oxylabs.io/products/cn/dai-li/mobile-proxies/making-requests.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.