Simple C# .NET 4.5 HTTPClient Request Using Basic Auth and Proxy

SimpleHttpClient.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net.Http;
using System.Net;


namespace HTTP_Test
{
    class program
    {
        static void Main()
        {
            Task t = new Task(HTTP_GET);
            t.Start();
            Console.ReadLine();
        }

        static async void HTTP_GET()
        {
            var TARGETURL = "http://en.wikipedia.org/";

            HttpClientHandler handler = new HttpClientHandler()
            {
                Proxy = new WebProxy("http://127.0.0.1:8888"),
                UseProxy = true,
            };

            Console.WriteLine("GET: + " + TARGETURL);

            // ... Use HttpClient.            
            HttpClient client = new HttpClient(handler);

            var byteArray = Encoding.ASCII.GetBytes("username:password1234");
            client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Basic", Convert.ToBase64String(byteArray));

            HttpResponseMessage response = await client.GetAsync(TARGETURL);
            HttpContent content = response.Content;

            // ... Check Status Code                                
            Console.WriteLine("Response StatusCode: " + (int)response.StatusCode);

            // ... Read the string.
            string result = await content.ReadAsStringAsync();

            // ... Display the result.
            if (result != null &&
            result.Length >= 50)
            {
                Console.WriteLine(result.Substring(0, 50) + "...");
            }
        }
    }
}

Hi , I want to call the third party SMS APi call - TransmitSMS from my .net web application that uses framework 4.5. during the call i want to send authorisation , parameter everything. i am new to the programming. can any guys help on this.

I already tried using http client:

i always get the following error :

{StatusCode: 400, ReasonPhrase: 'Bad Request', Version: 1.1, Content: System.Net.Http.StreamContent, Headers:
{
Connection: close
Date: Wed, 04 Apr 2018 12:06:52 GMT
Server: Microsoft-HTTPAPI/2.0
Content-Length: 334
Content-Type: text/html; charset=us-ascii
}}

following is the code i wrote for calling
public string CancelParameters = "message=12&to=6512312312";
public string URL = "http://api.transmitsms.com/send-sms.json";
try
{
HttpClientHandler handler = new HttpClientHandler()
{
Proxy = new WebProxy("http://localhost:53436"),
UseProxy = true,

            };

            HttpClient client = new HttpClient(handler);
            client.BaseAddress = new Uri(URL);
            //WebProxy.GetDefaultProxy();

           
            client.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
            
            client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Basic", Convert.ToBase64String(System.Text.ASCIIEncoding.ASCII.GetBytes(string.Format("{0}:{1}", "myusername(apikey)", "my password(secret)"))));
            HttpResponseMessage response = client.GetAsync(CancelParameters).Result;
        }
        catch (Exception ex)
        {
            ex.InnerException.ToString();
        }

can anybody please help on this. thanks in advance.

Muchas gracias

Very nice! I was able to intercept HttpClient with Fiddler on port 58888!

thanks, men.

God bless you !!
I lost a day yesterday to get done some GET to external API..
Thank you !! :)

Not sure what gives but for what ever reason creating the task and running it in main with t.start() does nothing. I don't get any errors it just stops when it hits the closing {} of Main(string[] args). The only thing different I added was user input on user name and password and I added an encryption method .

So I have the Main(string[] args then I have the following

` public async Task EncodePass(string password)
{

        byte[] bytes = Encoding.Unicode.GetBytes(password);
        byte[] inArray = HashAlgorithm.Create("SHA1").ComputeHash(bytes);
        return Convert.ToBase64String(inArray);
    }`

Then I have
`static async void HTTP_GET()
{

}`

THANK YOU MAN!

Thank you very much.

Thank you very much, you saved my day

thankkk youuuu

It took me a while to find out how to encode the username and password into the authorization header, your code saved me a lot of trouble, thanks!

thanks!

Great Work?

Can you guide me

How to handle below json format using C# (with Authentication) - Post Method with Body(Raw)

{

"CustomerCode": "F101",
"CusReferenceNo": "3",
"StationName": "fsa",
"SalesmanId": "5",
"OrderStatus": "CLS",
"PostingDate": "2021-01-07",

"orderDetails":[
    {

"ItemCode": "100-0001-00002",
"Quantity": "25000.000000",

}]

}

Appreciated, if you guide me and share sample code

Getting trouble with downloading the PFD files from the webpage ("https://www.*******.com/produ/abc.pdf) with user authentication through using C# "HttpClient"
The webpage having some Cookies also
i followed the same as your code.

Please guide me how download through code (C#)?

Getting trouble with downloading the PFD files from the webpage ("https://www.*******.com/produ/abc.pdf) with user authentication through using C# "HttpClient"
The webpage having some Cookies also
i followed the same as your code.

Thank you!