Proxy for Smartsheet

When performing web scraping with authorization in Python, you typically need to simulate the login process of a user by sending the necessary authentication data (such as username and password) to the website. The exact steps depend on the authentication method used by the website, and there are several common approaches

Basic Authentication (using requests library)

If the website uses HTTP Basic Authentication, you can include the authentication credentials in the request headers using the requests library.

import requests

url = 'https://example.com/data'
username = 'your_username'
password = 'your_password'

response = requests.get(url, auth=(username, password))

if response.status_code == 200:
    # Successfully authenticated, you can now parse the content
    print(response.text)
else:
    print(f"Failed to authenticate. Status code: {response.status_code}")

Form-Based Authentication

For websites that use form-based authentication (login form), you need to send a POST request with the appropriate form data.

import requests

login_url = 'https://example.com/login'
data = {
    'username': 'your_username',
    'password': 'your_password',
}

# Use a session to persist the authentication across requests
with requests.Session() as session:
    response = session.post(login_url, data=data)

    if response.status_code == 200:
        # Authentication successful, continue with subsequent requests
        data_url = 'https://example.com/data'
        data_response = session.get(data_url)
        print(data_response.text)
    else:
        print(f"Failed to authenticate. Status code: {response.status_code}")

OAuth Authentication

For websites using OAuth, you might need to use an OAuth library like requests_oauthlib or oauthlib to handle the OAuth flow.

Handling Cookies

Sometimes, authentication is maintained using cookies. In such cases, you need to handle cookies in your requests.

import requests

login_url = 'https://example.com/login'
data = {
    'username': 'your_username',
    'password': 'your_password',
}

# Use a session to persist the authentication across requests
with requests.Session() as session:
    login_response = session.post(login_url, data=data)

    if login_response.status_code == 200:
        # Authentication successful, continue with subsequent requests
        data_url = 'https://example.com/data'
        data_response = session.get(data_url)
        print(data_response.text)
    else:
        print(f"Failed to authenticate. Status code: {login_response.status_code}")

If you want to parse JSON data and display it in a TreeView in a Windows Forms application using C#, you can use the Newtonsoft.Json library for parsing JSON and the TreeView control for displaying the hierarchical structure. Below is an example demonstrating how to achieve this

Install Newtonsoft.Json

Use NuGet Package Manager Console to install the Newtonsoft.Json package:

Install-Package Newtonsoft.Json

• Create a Windows Forms Application:

  • Open Visual Studio and create a new Windows Forms Application project.

• Design the Form:

  • Drag and drop a TreeView control and a Button on the form.

• Write Code to Parse JSON and Populate TreeView:

using System;
using System.Windows.Forms;
using Newtonsoft.Json.Linq;

namespace JsonTreeViewExample
{
    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();
        }

        private void btnLoadJson_Click(object sender, EventArgs e)
        {
            // Replace with your JSON data or URL
            string jsonData = @"{
                ""name"": ""John"",
                ""age"": 30,
                ""address"": {
                    ""city"": ""New York"",
                    ""zip"": ""10001""
                },
                ""emails"": [
                    ""[email protected]"",
                    ""[email protected]""
                ]
            }";

            // Parse JSON data
            JObject jsonObject = JObject.Parse(jsonData);

            // Clear existing nodes in TreeView
            treeView.Nodes.Clear();

            // Populate TreeView
            PopulateTreeView(treeView.Nodes, jsonObject);
        }

        private void PopulateTreeView(TreeNodeCollection nodes, JToken token)
        {
            if (token is JValue)
            {
                // Display the value
                nodes.Add(token.ToString());
            }
            else if (token is JObject)
            {
                // Display object properties
                var obj = (JObject)token;
                foreach (var property in obj.Properties())
                {
                    TreeNode newNode = nodes.Add(property.Name);
                    PopulateTreeView(newNode.Nodes, property.Value);
                }
            }
            else if (token is JArray)
            {
                // Display array items
                var array = (JArray)token;
                for (int i = 0; i < array.Count; i++)
                {
                    TreeNode newNode = nodes.Add($"[{i}]");
                    PopulateTreeView(newNode.Nodes, array[i]);
                }
            }
        }
    }
}

4. • In this example, the btnLoadJson_Click event handler simulates loading JSON data. You should replace it with your method of loading JSON data (e.g., from a file, a web service, etc.).
   • The PopulateTreeView method recursively populates the TreeView with nodes representing the JSON structure.

5. Run the Application:

   • Build and run your application. Click the button to load the JSON data into the TreeView.

This example assumes a simple JSON structure. You may need to adjust the code based on the structure of your specific JSON data. The PopulateTreeView method handles objects, arrays, and values within the JSON data.

A DNS proxy, also known as a DNS proxy server or DNS forwarder, is a specialized type of proxy server that intercepts and processes Domain Name System (DNS) queries. DNS proxies are responsible for translating human-readable domain names into IP addresses, which are used by devices to access websites and other online resources.

DNS proxies act as an intermediary between a client (e.g., a web browser, operating system, or application) and a DNS resolver (e.g., an ISP's DNS server or a public DNS server like Google DNS or Cloudflare DNS).

The basic configuration is written in nginx.conf file in the program directory. You need to create a server article and specify there the port number and the place for cached data. Thus, for example, by using port 8080 you may organize a local proxy to test your own sites.

Connect your computer to a functioning router, then open any browser, go to the settings and enable manual configuration. Specify the IP, gateway with DNSI and subnet mask in the appropriate fields. In the "Home network" tab, under "Computers", go to "IPMP Proxy" and turn off this function. Under "System", click on the gear symbol, and under "Components", specify the Proxy UDP HTTP utility and click "Refresh".