> For the complete documentation index, see [llms.txt](https://developers.oxylabs.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.oxylabs.io/products/pt-br/web-unblocker.md).

# Web Unblocker

Aprenda a usar o Web Unblocker, uma solução de proxy com tecnologia de IA que permite alcançar até os sites mais difíceis.

[**Web Unblocker**](https://oxylabs.io/products/web-unblocker) é uma **Solução de proxy com IA** que gerencia o processo de gerenciamento de requisições para extrair dados públicos até dos sites mais difíceis.

{% hint style="info" %}
Você pode testar o Web Unblocker gratuitamente com um crédito de boas-vindas de US$ 5. Registre-se na Oxylabs [**painel**](https://dashboard.oxylabs.io/en/registration) para começar.
{% endhint %}

O produto não é um proxy comum, mas um sistema mais avançado que gerencia vários processos de scraping, como:

* Gerenciamento automático do tipo de proxy
* Geração de fingerprint do navegador
* Tentativas automáticas
* Manutenção de sessões
* Renderização de JavaScript

[**Web Unblocker**](https://github.com/oxylabs/web-unblocker) garante uma taxa de sucesso muito maior em comparação com proxies regulares. Ele também oferece suporte a **headers personalizados** definidos pelo usuário e **persistência de IP** junto com **cookies reutilizáveis** e **requisições POST**.

### Primeiros passos

Integrar [**Web Unblocker**](https://oxylabs.io/products/web-unblocker) é fácil, especialmente se você já usou regular [**proxies**](https://oxylabs.io/products/residential-proxy-pool) para web scraping. A única diferença é que exigimos que você ignore o certificado SSL usando os `-k` ou `--insecure` flags do cURL (ou uma expressão equivalente na linguagem de sua escolha).

Para fazer uma requisição com o Web Unblocker, você precisa usar o `unblock.oxylabs.io:60000` endpoint de proxy. Veja um exemplo de cURL abaixo. Você pode encontrar exemplos de código em outras linguagens [**aqui**](/products/pt-br/web-unblocker/making-requests.md) ou exemplos completos de código em nosso [**GitHub**](https://github.com/oxylabs/product-integrations/tree/master/web-unblocker).

{% hint style="info" %}
Use [**ip.oxylabs.io/location**](https://ip.oxylabs.io/location) para verificar os parâmetros dos seus IPs – este domínio fornece informações de quatro bancos de dados de geolocalização: MaxMind, IP2Location, DB-IP e IPinfo.io. Os parâmetros incluem endereço IP, provedor, país, cidade, CEP, ASN, nome da organização, fuso horário e meta (quando divulgado pelo banco de dados).
{% endhint %}

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

```bash
curl -k -x https://unblock.oxylabs.io:60000 \\
-U 'USERNAME:PASSWORD' \\
'https://ip.oxylabs.io/location'
```

{% endtab %}

{% tab title="Python" %}

```python
import requests

# Use your Web Unblocker credentials here.
USERNAME, PASSWORD = 'YOUR_USERNAME', 'YOUR_PASSWORD'

# Define proxy dict.
proxies = {
  'http': f'http://{USERNAME}:{PASSWORD}@unblock.oxylabs.io:60000',
  'https': f'https://{USERNAME}:{PASSWORD}@unblock.oxylabs.io:60000',
}

response = requests.request(
    'GET',
    'https://ip.oxylabs.io/location',
    verify=False,  # Ignore the SSL certificate
    proxies=proxies,
)

# Print result page to stdout
print(response.text)

# Save returned HTML to result.html file
with open('result.html', 'w') as f:
    f.write(response.text)
```

{% endtab %}

{% tab title="Node.js" %}

```javascript
import fetch from 'node-fetch';
import { HttpsProxyAgent } from 'https-proxy-agent';

const username = 'YOUR_USERNAME';
const password = 'YOUR_PASSWORD';

const agent = new HttpsProxyAgent(
  `https://${username}:${password}@unblock.oxylabs.io:60000`
);

// Ignore the certificate
process.env['NODE_TLS_REJECT_UNAUTHORIZED'] = 0;

const response = await fetch('https://ip.oxylabs.io/location', {
  method: 'get',
  agent: agent,
});

console.log(await response.text());
```

{% endtab %}

{% tab title="PHP" %}

```php
<?php
$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'https://ip.oxylabs.io/location');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_PROXY, 'https://unblock.oxylabs.io:60000');
curl_setopt($ch, CURLOPT_PROXYUSERPWD, 'YOUR_USERNAME' . ':' . 'YOUR_PASSWORD');
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);

$result = curl_exec($ch);
echo $result;

if (curl_errno($ch)) {
    echo 'Error:' . curl_error($ch);
}
curl_close($ch);
```

{% endtab %}

{% tab title="Golang" %}

```go
package main

import (
	"crypto/tls"
	"fmt"
	"io/ioutil"
	"net/http"
	"net/url"
)

func main() {
	const Username = "YOUR_USERNAME"
	const Password = "YOUR_PASSWORD"

	proxyUrl, _ := url.Parse(
		fmt.Sprintf(
			"https://%s:%s@unblock.oxylabs.io:60000",
			Username,
			Password,
		),
	)
	customTransport := &http.Transport{Proxy: http.ProxyURL(proxyUrl)}

	// Ignore the certificate
	customTransport.TLSClientConfig = &tls.Config{InsecureSkipVerify: true}

	client := &http.Client{Transport: customTransport}
	request, _ := http.NewRequest("GET",
		"https://ip.oxylabs.io/location",
		nil,
	)

	response, _ := client.Do(request)

	responseText, _ := ioutil.ReadAll(response.Body)
	fmt.Println(string(responseText))
}

```

{% endtab %}

{% tab title="C#" %}

```csharp
using System;
using System.Net;
using System.Net.Http;
using System.Threading.Tasks;

namespace OxyApi
{
    class Program
    {
        static async Task Main(string[] args)
        {
            var webProxy = new WebProxy
            {
                Address = new Uri("https://unblock.oxylabs.io:60000"),
                BypassProxyOnLocal = false,
                UseDefaultCredentials = false,

                Credentials = new NetworkCredential(
                userName: "YOUR_USERNAME",
                password: "YOUR_PASSWORD"
                )
            };

            var httpClientHandler = new HttpClientHandler
            {
                Proxy = webProxy,
            };

            // Ignore the certificate
            httpClientHandler.ClientCertificateOptions = ClientCertificateOption.Manual;
            httpClientHandler.ServerCertificateCustomValidationCallback =
                (httpRequestMessage, cert, cetChain, policyErrors) =>
                {
                    return true;
                };


            var client = new HttpClient(handler: httpClientHandler, disposeHandler: true);

            Uri baseUri = new Uri("https://ip.oxylabs.io/location");
            client.BaseAddress = baseUri;

            var requestMessage = new HttpRequestMessage(HttpMethod.Get, "");

            var response = await client.SendAsync(requestMessage);
            var contents = await response.Content.ReadAsStringAsync();

            Console.WriteLine(contents);
        }
    }
}
```

{% endtab %}

{% tab title="Java" %}

```java
package org.example;

import org.apache.hc.client5.http.auth.AuthScope;
import org.apache.hc.client5.http.auth.CredentialsProvider;
import org.apache.hc.client5.http.classic.methods.HttpGet;
import org.apache.hc.client5.http.config.RequestConfig;
import org.apache.hc.client5.http.impl.auth.CredentialsProviderBuilder;
import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
import org.apache.hc.client5.http.impl.classic.HttpClients;
import org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManagerBuilder;
import org.apache.hc.client5.http.ssl.NoopHostnameVerifier;
import org.apache.hc.client5.http.ssl.SSLConnectionSocketFactoryBuilder;
import org.apache.hc.client5.http.ssl.TrustAllStrategy;
import org.apache.hc.core5.http.HttpHost;
import org.apache.hc.core5.http.io.entity.EntityUtils;
import org.apache.hc.core5.http.message.StatusLine;
import org.apache.hc.core5.ssl.SSLContextBuilder;

import java.util.Arrays;
import java.util.Properties;


public class Main {

    public static void main(final String[] args)throws Exception {
        final CredentialsProvider credsProvider = CredentialsProviderBuilder.create()
                .add(new AuthScope("unblock.oxylabs.io", 60000), "USERNAME", "PASSWORD".toCharArray())
                .build();
        final HttpHost target = new HttpHost("https", "ip.oxylabs.io", 443);
        final HttpHost proxy = new HttpHost("https", "unblock.oxylabs.io", 60000);
        try (final CloseableHttpClient httpclient = HttpClients.custom()
                .setDefaultCredentialsProvider(credsProvider)
                .setProxy(proxy)
                // We recommend accepting our certificate instead of allowing insecure (http) traffic
                .setConnectionManager(PoolingHttpClientConnectionManagerBuilder.create()
                        .setSSLSocketFactory(SSLConnectionSocketFactoryBuilder.create()
                                .setSslContext(SSLContextBuilder.create()
                                        .loadTrustMaterial(TrustAllStrategy.INSTANCE)
                                        .build())
                                .setHostnameVerifier(NoopHostnameVerifier.INSTANCE)
                                .build())
                        .build())
                .build()) {

            final RequestConfig config = RequestConfig.custom()
                    .build();
            final HttpGet request = new HttpGet("/location");
            request.setConfig(config);

            System.out.println("Executing request " + request.getMethod() + " " + request.getUri() +
                    " via " + proxy + " headers: " + Arrays.toString(request.getHeaders()));

            httpclient.execute(target, request, response -> {
                System.out.println("----------------------------------------");
                System.out.println(request + "->" + new StatusLine(response));
                EntityUtils.consume(response.getEntity());
                return null;
            });
        }
    }
}
```

{% endtab %}
{% endtabs %}

{% hint style="info" %}
Se você estiver observando baixas taxas de sucesso ou conteúdo vazio, tente adicionar adicional `"x-oxylabs-render: html"` header com sua requisição.
{% endhint %}

{% hint style="warning" %}
Se o Web Unblocker estiver sendo usado para fazer scraping de sites que dependem do carregamento de dados via JavaScript, consulte a [**Renderização de JavaScript**](/products/pt-br/web-unblocker/custom-browser-instructions/javascript-rendering.md) seção. O produto não foi projetado para ser usado diretamente com navegadores headless (por exemplo, Chromium, PhantomJS, Splash, etc.) e seus drivers (por exemplo, Playwright, Selenium, Puppeteer, etc.) diretamente.
{% endhint %}

Assista ao vídeo abaixo para um exemplo de scraping de um alvo difícil sem interrupções:

{% embed url="<https://www.youtube.com/watch?v=KGOsWPF4Wfs>" %}

#### Aula

Se você quiser saber mais sobre coleta de dados em larga escala com [**Web Unblocker**](https://github.com/oxylabs/web-unblocker) - sugerimos assistir a esta lição do Scraping Experts:

{% embed url="<https://experts.oxylabs.io/pages/bypassing-sophisticated-anti-bot-systems>" %}


---

# Agent Instructions
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## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://developers.oxylabs.io/products/pt-br/web-unblocker.md?ask=<question>&goal=<user_goal>
```

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