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This is my YouTube Voip interface, I make free calls.
I have an interface for my Voip free calls, it’s not like this one, but yes it’s free. You can change vpn and configure your phone to use the same interface. This.
Configuring a resolv.conf file in CentOS step by step.
In Linux, a file called resolv.conf is always used to handle DNS resolution. It is a system-wide file where you can give DNS names. In the previous tutorial, we loaded the default DNS names into resolv.conf.
In this tutorial, you will learn how to change the resolv.conf file in CentOS 8. In case you are new to Linux, you can read the following instructions carefully.
How to start Firewall in CentOS.
In Firewall, you can handle incoming and outgoing ICMP messages.
In this tutorial, you will learn how to open the Firewall on CentOS.
Before going to the Firewall options, you must know that how the firewall is working.
In Linux, the firewall is blocking the incoming or outgoing traffic from a host. You can change the firewall to accept or block messages. You can also use the firewall to allow or deny incoming or outgoing Internet traffic on a port (both incoming and outgoing). This service can be started using the command firewall-cmd. This will open up a file called firewall-cmd.conf in the /etc/sysconfig folder.
In this tutorial, we will be working on CentOS 8. If you are new to Linux, you can read the following instructions carefully.
You can use the sudo command to execute the commands with root privileges, but only if you give proper permissions to the root directory. Once we understand how the command works and give the proper permissions to the /etc/sysconfig folder, we will open the configuration file so that we can make changes to the firewall options. To open the configuration file, we need to use the following command.
By default, all the configuration files are opened with root privileges, so we don’t need to use sudo command to open any particular configuration file. The command firewall-cmd.conf opens the default configuration file located in /etc/sysconfig/firewall-cmd.conf.
If you are using another version of CentOS, you can go with
This is how I have coded my WebAPI. The API calls the correct URL and gets the correct data.
public string GetAPI()
// It is possible to perform a POST request without a body.
ServicePointManager.ServerCertificateValidationCallback = (sender, certificate, chain, errors) => true;
HttpClientHandler httpClientHandler = new HttpClientHandler
AllowAutoRedirect = true,
MaxResponseContentBufferSize = 4 * 1024,
UseCookies = true,
CookieContainer = new CookieContainer(),
AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate
HttpClient httpClient = new HttpClient(httpClientHandler);
httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue(“Bearer”, “xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx”);
Uri uri = new Uri(url);
var request = new HttpRequestMessage(HttpMethod.Get, uri);
// configure request header here
// HTTP version used
// configure request body here
//Content is null because it returns a response without content.
var response = httpClient.SendAsync(request).Result;
var content = response.Content.ReadAsStringAsync().Result;