> For the complete documentation index, see [llms.txt](https://docs.goproxies.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.goproxies.com/proxies/shared-datacenter-proxies/proxy-parameters/session-stickiness.md).

# Session Stickiness

### Establishing a session

To maintain a consistent IP address with the `sessionid` proxy header, the same IP can be used for up to 10 minutes, provided it stays in the available pool. If the IP is no longer available or removed due to quality issues, a new IP is assigned. To reuse an IP, apply the same `sessionid` header alongside a unique identifier comprising 4 to 10 digits, like. 

For session duration adjustments in case it is needed, contact us at <support@goproxies.com>.

### Credentials list of examples for different sessions

Examples below contain a list of credentials that establish a new unique session.

`customer-USERNAME-sessionid-3821319:PASSWORD`\
`customer-USERNAME-sessionid-192938:PASSWORD`\
`customer-USERNAME-sessionid-489582:PASSWORD`\
`customer-USERNAME-sessionid-283881:PASSWORD`\
`customer-USERNAME-sessionid-891928:PASSWORD`<br>

### Understanding sessionid header

When using a session ID like `customer-USERNAME-sessionid-128338:PASSWORD`, the proxy assigns an IP address (e.g., 1.1.1.1), which is valid for 10 minutes. If there's no activity with the session ID for 10 minutes, you may be assigned a new IP (e.g., 1.1.1.2), or if the old IP is unavailable, it will be replaced as well.

### Request example

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

```bash
curl --proxytunnel --proxy "https://customer-USERNAME-sessionid-128338:PASSWORD@hosting.goproxies.com:1080" https://ip.goproxies.com
```

{% endtab %}

{% tab title="JavaScript" %}

```bash
npm install axios https-proxy-agent
```

```javascript
// sessionid-example.js
const axios = require('axios');
const { HttpsProxyAgent } = require('https-proxy-agent');

const username = 'customer-USERNAME-sessionid-3821319'; // unique session ID
const password = 'PASSWORD';
const proxyUrl = `http://${encodeURIComponent(username)}:${encodeURIComponent(password)}@hosting.goproxies.com:1080`;
const agent = new HttpsProxyAgent(proxyUrl);

(async () => {
  try {
    const res = await axios.get('https://ip.goproxies.com', { httpsAgent: agent, timeout: 10000 });
    console.log('status:', res.status);
    console.log('body:', res.data);
  } catch (err) {
    console.error('request error:', err.message);
  }
})();
```

{% endtab %}

{% tab title="Python" %}

```python
# sessionid_example.py
import requests
from urllib.parse import quote

username = "customer-USERNAME-sessionid-489582"  # unique session ID
password = "PASSWORD"
proxy = f"http://{quote(username)}:{quote(password)}@hosting.goproxies.com:1080"

proxies = {"http": proxy, "https": proxy}

resp = requests.get("https://ip.goproxies.com", proxies=proxies, timeout=10)
print(resp.status_code)
print(resp.text)
```

{% endtab %}

{% tab title="Go" %}

```go
package main

import (
	"fmt"
	"io"
	"net/http"
	"net/url"
	"time"
)

func main() {
	proxyURL, _ := url.Parse("http://customer-USERNAME-sessionid-3821319:PASSWORD@hosting.goproxies.com:1080") // unique session ID
	transport := &http.Transport{
		Proxy: http.ProxyURL(proxyURL),
		TLSHandshakeTimeout: 10 * time.Second,
	}
	client := &http.Client{Transport: transport, Timeout: 15 * time.Second}

	resp, err := client.Get("https://ip.goproxies.com")
	if err != nil {
		fmt.Println("request error:", err)
		return
	}
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println("status:", resp.Status)
	fmt.Println(string(body))
}
```

{% endtab %}

{% tab title="Ruby" %}

```ruby
# sessionid_example.rb
require 'net/http'
require 'uri'

username = 'customer-USERNAME-sessionid-283881' # unique session ID
password = 'PASSWORD'

uri = URI('https://ip.goproxies.com')
proxy_addr = 'hosting.goproxies.com'
proxy_port = 1080

Net::HTTP::Proxy(proxy_addr, proxy_port, username, password).start(uri.host, uri.port, use_ssl: true) do |http|
  req = Net::HTTP::Get.new(uri)
  res = http.request(req)
  puts res.code
  puts res.body
end
```

{% endtab %}

{% tab title="Java" %}

```java
import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;

public class SessionidSharedDatacenter {
  public static void main(String[] args) throws Exception {
    String proxyHost = "hosting.goproxies.com";
    int proxyPort = 1080;
    String user = "customer-USERNAME-sessionid-891928"; // unique session ID
    String pass = "PASSWORD";

    CredentialsProvider credsProvider = new BasicCredentialsProvider();
    credsProvider.setCredentials(new AuthScope(proxyHost, proxyPort),
        new UsernamePasswordCredentials(user, pass));

    HttpHost proxy = new HttpHost(proxyHost, proxyPort);
    RequestConfig config = RequestConfig.custom().setProxy(proxy).build();

    try (CloseableHttpClient httpclient = HttpClients.custom()
             .setDefaultCredentialsProvider(credsProvider)
             .build()) {

      HttpGet httpget = new HttpGet("https://ip.goproxies.com");
      httpget.setConfig(config);

      try (CloseableHttpResponse response = httpclient.execute(httpget)) {
        System.out.println(response.getStatusLine());
        System.out.println(new String(response.getEntity().getContent().readAllBytes()));
      }
    }
  }
}

```

{% endtab %}

{% tab title="PHP" %}

```php
<?php
// sessionid_example.php
$ch = curl_init('https://ip.goproxies.com');

curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_PROXY, 'hosting.goproxies.com:1080');
curl_setopt($ch, CURLOPT_PROXYUSERPWD, 'customer-USERNAME-sessionid-192938:PASSWORD'); // unique session ID
curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, true);

$response = curl_exec($ch);
if ($response === false) {
    echo 'cURL error: ' . curl_error($ch) . PHP_EOL;
} else {
    echo 'Response: ' . $response . PHP_EOL;
}
curl_close($ch);
```

{% endtab %}
{% endtabs %}


---

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