C#と.NETでDataImpulseプロキシを設定する

using System.Net;

class HttpClientApp
{
    public static void Main(string[] args)
    {
        DownloadPageAsync().Wait();
    }

    private static async Task DownloadPageAsync()
    {
        string page = "https://api.ipify.org/"; // Example API to get the public IP address

        // Configure proxy
        var proxy = new WebProxy("gw.dataimpulse.com:823")
        {
            UseDefaultCredentials = false,
            Credentials = new NetworkCredential("your login", "your password")
        };

        // Set up HTTP client handler with proxy
        var httpClientHandler = new HttpClientHandler
        {
            Proxy = proxy,
            UseProxy = true
        };

        using (var client = new HttpClient(handler: httpClientHandler, disposeHandler: true))
        {
            try
            {
                // Send the HTTP GET request
                var response = await client.GetAsync(page);

                // Check if the response is successful
                response.EnsureSuccessStatusCode();

                // Get the content of the response
                string result = await response.Content.ReadAsStringAsync();
                Console.WriteLine("Response received: ");
                Console.WriteLine(result);
                Console.WriteLine("Press any key to exit.");
                Console.ReadLine(); // Keep the console open to display the result
            }
            catch (HttpRequestException e)
            {
                Console.WriteLine($"Request error: {e.Message}");
                Console.WriteLine("Press any key to exit.");
                Console.ReadLine(); // Keep the console open to display the result
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Unexpected error: {ex.Message}");
                Console.WriteLine("Press any key to exit.");
                Console.ReadLine(); // Keep the console open to display the result
            }
        }
    }
}

      
        

      
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dotnet run --project NameOfProject
      
        

      
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using System.Net;

class ProxyRotator
{
    // List of proxies to rotate through
    private static List proxies = new List
    {
        new WebProxy("http://gw.dataimpulse.com:10000"),
        new WebProxy("http://gw.dataimpulse.com:10001"),
        new WebProxy("http://gw.dataimpulse.com:10002")
    };

    public static void Main(string[] args)
    {
        MakeRequestsWithRotation().Wait();
    }

    private static async Task MakeRequestsWithRotation()
    {
        // Example URLs to request
        string url = "https://api.ipify.org/";

        for (int i = 0; i < proxies.Count; i++)
        {
            // Send request using each proxy
            Console.WriteLine($"Using proxy: {proxies[i].Address}");
            try
            {
                var response = await SendRequestWithProxy(url, proxies[i]);
                if (response.IsSuccessStatusCode)
                {
                    Console.WriteLine($"Request succeeded with proxy {proxies[i].Address}");
                    string responseBody = await response.Content.ReadAsStringAsync();
                    Console.WriteLine($"IP address from API website: {responseBody}");  // Print or process the response as needed
                }
                else
                {
                    Console.WriteLine($"Request failed with proxy {proxies[i].Address}, Status Code: {response.StatusCode}");
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Exception with proxy {proxies[i].Address}: {ex.Message}");
            }
        }
    }

    // Function to send request using a specific proxy
    private static async Task SendRequestWithProxy(string url, WebProxy proxy)
    {
        HttpClientHandler handler = new HttpClientHandler
        {
            Proxy = proxy,
            UseProxy = true
        };

        using (HttpClient client = new HttpClient(handler))
        {
            return await client.GetAsync(url);
        }
    }
}

      
        

      
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using System.Net;

class ProxyChecker
{
    // Entry point renamed to avoid conflict
    public static void Main(string[] args)
    {
        string proxyAddress = "gw.dataimpulse.com"; // Replace with your proxy address
        // Replace with your proxy ports
        var proxyPortStart = 10000; 
        var proxyPortEnd = 10100;

        var tasks = new List();
        for (var proxyPort = proxyPortStart; proxyPort < proxyPortEnd; proxyPort++)
        {
            tasks.Add(CheckProxy(proxyAddress, proxyPort));
        }

        Task.WaitAll(tasks.ToArray());
    }

    public static async Task CheckProxy(string proxyAddress, int proxyPort)
    {
        var proxy = new WebProxy(proxyAddress, proxyPort)
        {
            // Uncomment and modify if the proxy requires credentials
            Credentials = new NetworkCredential("your login", "your password"),
            BypassProxyOnLocal = false
        };

        var httpClientHandler = new HttpClientHandler
        {
            Proxy = proxy,
            UseProxy = true
        };

        using (var client = new HttpClient(httpClientHandler))
        {
            try
            {
                client.Timeout = TimeSpan.FromSeconds(10); // Set a timeout
                var response = await client.GetAsync("https://api.ipify.org/"); // You can use any URL for testing
                if (response.IsSuccessStatusCode)
                {
                    Console.WriteLine("Proxy is working: " + proxyAddress + ":" + proxyPort);
                }
                else
                {
                    Console.WriteLine("Proxy is not working (Invalid response): " + proxyAddress + ":" + proxyPort);
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("Proxy is not working (Exception): " + proxyAddress + ":" + proxyPort + " - " + ex.Message);
            }
        }
    }
}

      
        

      
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using System.Net;
using HtmlAgilityPack;

class WebScraper
{
    public static void Main(string[] args)
    {
        Scrape().Wait();
    }

    private static async Task Scrape()
    {
        // Define the proxy details
        string proxyAddress = "http://gw.dataimpulse.com:823"; // Replace with your proxy address
        string proxyUsername = "your login"; // Replace with your proxy username (if needed)
        string proxyPassword = "your password"; // Replace with your proxy password (if needed)

        // Create a Proxy Handler
        var httpClientHandler = new HttpClientHandler
        {
            Proxy = new WebProxy(proxyAddress)
            {
                Credentials = new NetworkCredential(proxyUsername, proxyPassword)
            },
            UseProxy = true
        };

        // Create an HttpClient using the handler with the proxy
        using (var client = new HttpClient(httpClientHandler))
        {
            // Define the target URL to scrape
            string url = "https://dataimpulse.com/";
            var baseUri = new Uri(url);

            try
            {
                // Send GET request
                var response = await client.GetAsync(url);

                // Use the new code snippet here
                if (response.IsSuccessStatusCode)
                {
                    var content = await response.Content.ReadAsStringAsync();

                    // Load the HTML content into an HtmlDocument
                    HtmlDocument doc = new();
                    doc.LoadHtml(content);

                    // Use XPath to find all  tags that are direct children of 
, 
, or 
                    var nodes = doc.DocumentNode.SelectNodes("//li/a[@href] | //p/a[@href] | //td/a[@href]");

                    if (nodes != null)
                    {
                        foreach (var node in nodes)
                        {
                            string hrefValue = node.GetAttributeValue("href", string.Empty);
                            string title = node.InnerText; // This gets the text content of the  tag, which is usually the title

                            var fullUri = new Uri(baseUri, hrefValue);

                            Console.WriteLine($"Title: {title}, Link: {fullUri.AbsoluteUri}");
                            // You can process each title and link as required
                        }
                    }
                    else
                    {
                        Console.WriteLine("No matching nodes found.");
                    }
                }
                else
                {
                    Console.WriteLine($"Failed to scrape. Status code: {response.StatusCode}");
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine($"An error occurred: {ex.Message}");
            }
        }
    }
}

      
        

      
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