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EonaCat.DnsTester
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Updated

This commit is contained in:
EonaCat 2023-03-01 21:15:40 +01:00
parent 7379096bdd
commit cd376044d5
5 changed files with 516 additions and 449 deletions
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142
EonaCat.DnsTester/Helpers/DnsHelper.cs
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@ -2,6 +2,7 @@
using System.Collections.Generic; using System.Collections.Generic;
using System.Net; using System.Net;
using System.Net.Sockets; using System.Net.Sockets;
using System.Reflection;
using System.Text; using System.Text;
using System.Threading.Tasks; using System.Threading.Tasks;
@ -21,13 +22,26 @@ namespace EonaCat.DnsTester.Helpers
client.DontFragment = true; client.DontFragment = true;
client.EnableBroadcast = false; client.EnableBroadcast = false;
client.Client.ReceiveTimeout = DnsReceiveTimeout; client.Client.ReceiveTimeout = DnsReceiveTimeout;
await client.SendAsync(queryBytes, queryBytes.Length, endPoint); byte[] responseBytes = null;
var responseResult = await client.ReceiveAsync(); if (FakeResponse)
DnsResponse response = ParseDnsResponsePacket(dnsId, startTime, server, responseResult.Buffer); {
responseBytes = DnsHelper.GetExampleResponse();
}
else
{
await client.SendAsync(queryBytes, queryBytes.Length, endPoint);
var responseResult = await client.ReceiveAsync();
responseBytes = responseResult.Buffer;
}
DnsResponse response = ParseDnsResponsePacket(dnsId, startTime, server, responseBytes);
return response; return response;
} }
} }
// For testing purposes
public static bool FakeResponse { get; set; }
public static int DnsReceiveTimeout { get; set; } = 5; public static int DnsReceiveTimeout { get; set; } = 5;
@ -84,7 +98,7 @@ namespace EonaCat.DnsTester.Helpers
static DnsQuestion ParseDnsQuestionRecord(byte[] queryBytes, ref int offset) static DnsQuestion ParseDnsQuestionRecord(byte[] queryBytes, ref int offset)
{ {
// Parse the DNS name // Parse the DNS name
string name = ParseDnsName(queryBytes, ref offset); string name = DnsNameParser.ParseName(queryBytes, ref offset);
if (name == null) if (name == null)
{ {
return null; return null;
@ -103,8 +117,38 @@ namespace EonaCat.DnsTester.Helpers
}; };
} }
public static byte[] GetExampleResponse()
{
// Example response bytes for the A record of google.com
byte[] response = {
0x9d, 0xa9, // Query ID
0x81, 0x80, // Flags
0x00, 0x01, // Questions: 1
0x00, 0x01, // Answer RRs: 1
0x00, 0x00, // Authority RRs: 0
0x00, 0x00, // Additional RRs: 0
0x06, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, // Query: google
0x03, 0x63, 0x6f, 0x6d, // Query: com
0x00,
0x00, 0x01, // Record type: A
0x00, 0x01, // Record class: IN
0xc0, 0x0c, // Name pointer to google.com
0x00, 0x01, // Record type: A
0x00, 0x01, // Record class: IN
0x00, 0x00, 0x00, 0x3d, // TTL: 61 seconds
0x00, 0x04, // Data length: 4 bytes
0xac, 0xd9, 0x03, 0x3d // Data: 172.217.3.61
};
return response;
}
static DnsResponse ParseDnsResponsePacket(string dnsId, long startTime, string server, byte[] responseBytes) static DnsResponse ParseDnsResponsePacket(string dnsId, long startTime, string server, byte[] responseBytes)
{ {
Console.WriteLine("new byte[] { " + responseBytes + " }");
// Set the offset to the start
var offset = 0;
// Parse the DNS header // Parse the DNS header
ushort id = (ushort)((responseBytes[0] << 8) | responseBytes[1]); ushort id = (ushort)((responseBytes[0] << 8) | responseBytes[1]);
ushort flags = (ushort)((responseBytes[2] << 8) | responseBytes[3]); ushort flags = (ushort)((responseBytes[2] << 8) | responseBytes[3]);
@ -113,18 +157,19 @@ namespace EonaCat.DnsTester.Helpers
ushort nscount = (ushort)((responseBytes[8] << 8) | responseBytes[9]); ushort nscount = (ushort)((responseBytes[8] << 8) | responseBytes[9]);
ushort arcount = (ushort)((responseBytes[10] << 8) | responseBytes[11]); ushort arcount = (ushort)((responseBytes[10] << 8) | responseBytes[11]);
// We parsed the header set the offset past the header
offset = 12;
List<DnsQuestion> questions = new List<DnsQuestion>(); List<DnsQuestion> questions = new List<DnsQuestion>();
//for (int i = 0; i < qdcount; i++) for (int i = 0; i < qdcount; i++)
//{ {
// DnsQuestion question = ParseDnsQuestionRecord(responseBytes, ref offset); DnsQuestion question = ParseDnsQuestionRecord(responseBytes, ref offset);
// if (question != null) if (question != null)
// { {
// questions.Add(question); questions.Add(question);
// } }
//} }
int offset = 12;
// Parse the DNS answer records // Parse the DNS answer records
List<ResourceRecord> answers = new List<ResourceRecord>(); List<ResourceRecord> answers = new List<ResourceRecord>();
@ -198,17 +243,17 @@ namespace EonaCat.DnsTester.Helpers
static ResourceRecord ParseDnsAnswerRecord(byte[] responseBytes, ref int offset) static ResourceRecord ParseDnsAnswerRecord(byte[] responseBytes, ref int offset)
{ {
// Parse the DNS name // Parse the DNS name
string name = ParseDnsName(responseBytes, ref offset); string name = DnsNameParser.ParseName(responseBytes, ref offset);
if (name == null) if (name == null)
{ {
return null; return null;
} }
// Parse the DNS type, class, ttl, and data length // Parse the DNS type, class, ttl, and data length
DnsRecordType type = (DnsRecordType)((responseBytes[offset++] << 8) | responseBytes[offset++]); DnsRecordType type = (DnsRecordType)((responseBytes[offset] << 8) | responseBytes[offset++]);
DnsRecordClass klass = (DnsRecordClass)((responseBytes[offset++] << 8) | responseBytes[offset++]); DnsRecordClass klass = (DnsRecordClass)((responseBytes[offset] << 8) | responseBytes[offset++]);
uint ttl = (uint)((responseBytes[offset++] << 24) | (responseBytes[offset++] << 16) | (responseBytes[offset++] << 8) | responseBytes[offset++]); uint ttl = (uint)((responseBytes[offset] << 24) | (responseBytes[offset++] << 16) | (responseBytes[offset++] << 8) | responseBytes[offset++]);
ushort rdlen = (ushort)((responseBytes[responseBytes.Length - 5])); ushort rdlen = (ushort)((responseBytes[offset] << 8) + responseBytes[offset++]);
offset += 10; offset += 10;
// Parse the DNS data // Parse the DNS data
@ -230,7 +275,7 @@ namespace EonaCat.DnsTester.Helpers
break; break;
case DnsRecordType.CNAME: case DnsRecordType.CNAME:
case DnsRecordType.NS: case DnsRecordType.NS:
data = ParseDnsName(responseBytes, ref offset); data = DnsNameParser.ParseName(responseBytes, ref offset);
if (data == null) if (data == null)
{ {
return null; return null;
@ -240,7 +285,7 @@ namespace EonaCat.DnsTester.Helpers
case DnsRecordType.MX: case DnsRecordType.MX:
ushort preference = (ushort)((responseBytes[offset] << 8) | responseBytes[offset + 1]); ushort preference = (ushort)((responseBytes[offset] << 8) | responseBytes[offset + 1]);
offset += 2; offset += 2;
string exchange = ParseDnsName(responseBytes, ref offset); string exchange = DnsNameParser.ParseName(responseBytes, ref offset);
if (exchange == null) if (exchange == null)
{ {
return null; return null;
@ -267,60 +312,15 @@ namespace EonaCat.DnsTester.Helpers
}; };
} }
static string ParseDnsName(byte[] responseBytes, ref int offset) static string GetString(byte[] bytes, ref int index, int length)
{ {
StringBuilder name = new StringBuilder(); string str = "";
int originalOffset = offset; for (int i = 0; i < length; i++)
while (true)
{ {
byte len = responseBytes[offset++]; str += (char)bytes[index++];
if (len == 0)
{
break;
}
if ((len & 0xc0) == 0xc0)
{
ushort pointer = (ushort)(((len & 0x3f) << 8) | responseBytes[offset++]);
int pointerOffset = pointer & 0x3fff;
if (pointerOffset >= responseBytes.Length)
{
return null;
}
int pointerEnd = offset;
offset = pointerOffset;
if (offset < originalOffset)
{
return null;
}
name.Append(ParseDnsName(responseBytes, ref offset));
offset = pointerEnd;
break;
}
if (len > 63)
{
return null;
}
name.Append(Encoding.ASCII.GetString(responseBytes, offset, len));
offset += len;
if (responseBytes[offset - 1] != 0)
{
name.Append(".");
}
} }
return str;
if (originalOffset == offset)
{
return null;
}
return name.ToString();
} }
} }
public class DnsQuestion public class DnsQuestion

33
EonaCat.DnsTester/Helpers/DnsNameParser.cs Normal file
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@ -0,0 +1,33 @@
using System.Collections.Generic;
namespace EonaCat.DnsTester.Helpers
{
public class DnsNameParser
{
public static string ParseName(byte[] responseBytes, ref int offset)
{
List<string> labels = new List<string>();
int length;
while ((length = responseBytes[offset++]) != 0)
{
if ((length & 0xC0) == 0xC0)
{
// The name is compressed
int pointer = ((length & 0x3F) << 8) | responseBytes[offset++];
int savedOffset = offset;
offset = pointer;
labels.AddRange(ParseName(responseBytes, ref offset).Split('.'));
offset = savedOffset;
break;
}
// The name is not compressed
labels.Add(System.Text.Encoding.ASCII.GetString(responseBytes, offset, length));
offset += length;
}
return string.Join(".", labels);
}
}
}

17
EonaCat.DnsTester/Helpers/UrlHelper.cs
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@ -3,9 +3,7 @@ using System.Collections.Generic;
using System.Linq; using System.Linq;
using System.Net; using System.Net;
using System.Security.Cryptography; using System.Security.Cryptography;
using System.Text;
using System.Text.RegularExpressions; using System.Text.RegularExpressions;
using System.Threading.Tasks;
namespace EonaCat.DnsTester.Helpers namespace EonaCat.DnsTester.Helpers
{ {
@ -32,9 +30,9 @@ namespace EonaCat.DnsTester.Helpers
Random rand = new Random(); Random rand = new Random();
List<string> localCleanNames = urlList; List<string> urls = urlList;
while (localCleanNames.Count < totalUrls) while (urls.Count < totalUrls)
{ {
int index = rand.Next(searchEngineUrls.Count); int index = rand.Next(searchEngineUrls.Count);
KeyValuePair<string, string> searchEngine = searchEngineUrls.ElementAt(index); KeyValuePair<string, string> searchEngine = searchEngineUrls.ElementAt(index);
@ -64,14 +62,14 @@ namespace EonaCat.DnsTester.Helpers
// Add the names to the list // Add the names to the list
foreach (string name in uniqueNames) foreach (string name in uniqueNames)
{ {
if (localCleanNames.Count >= totalUrls) if (urls.Count >= totalUrls)
{ {
break; break;
} }
if (!localCleanNames.Contains(name)) if (!urls.Contains(name))
{ {
localCleanNames.Add(name); urls.Add(name);
} }
} }
} }
@ -87,8 +85,9 @@ namespace EonaCat.DnsTester.Helpers
} }
} }
urlList = localCleanNames; // Update the reference to the list urlList = urls;
SetStatus($"{urlList.Count} Random URL's found"); var urlText = "url" + (urlList.Count > 1 ? "'s" : string.Empty);
SetStatus($"{urlList.Count} random {urlText} found");
} }
private static string GetRandomLetters() private static string GetRandomLetters()

650
EonaCat.DnsTester/MainForm.Designer.cs generated
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@ -29,56 +29,266 @@
private void InitializeComponent() private void InitializeComponent()
{ {
System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(MainForm)); System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(MainForm));
ResultView = new System.Windows.Forms.ListView();
WebName = new System.Windows.Forms.ColumnHeader();
DNS1IP = new System.Windows.Forms.ColumnHeader();
DNS1Timing = new System.Windows.Forms.ColumnHeader();
DNS2IP = new System.Windows.Forms.ColumnHeader();
DNS2Timing = new System.Windows.Forms.ColumnHeader();
RunTest = new System.Windows.Forms.Button(); RunTest = new System.Windows.Forms.Button();
lblDns1 = new System.Windows.Forms.Label(); panel1 = new System.Windows.Forms.Panel();
lblDns2 = new System.Windows.Forms.Label();
dnsList1 = new System.Windows.Forms.ComboBox();
dnsList2 = new System.Windows.Forms.ComboBox();
UseCustomServers = new System.Windows.Forms.CheckBox();
lblCustom1 = new System.Windows.Forms.Label();
lblCustom2 = new System.Windows.Forms.Label();
CustomDns1 = new System.Windows.Forms.TextBox();
CustomDns2 = new System.Windows.Forms.TextBox();
lslStatus = new System.Windows.Forms.Label();
StatusBox = new System.Windows.Forms.ListBox();
chkDns1 = new System.Windows.Forms.CheckBox();
chkDns2 = new System.Windows.Forms.CheckBox();
label1 = new System.Windows.Forms.Label();
label2 = new System.Windows.Forms.Label();
txtResolveIP = new System.Windows.Forms.TextBox();
txtResolveHost = new System.Windows.Forms.TextBox();
btnResolveIP = new System.Windows.Forms.Button();
btnResolveHost = new System.Windows.Forms.Button();
label3 = new System.Windows.Forms.Label();
numericUpDown1 = new System.Windows.Forms.NumericUpDown();
comboBox1 = new System.Windows.Forms.ComboBox(); comboBox1 = new System.Windows.Forms.ComboBox();
numericUpDown1 = new System.Windows.Forms.NumericUpDown();
label3 = new System.Windows.Forms.Label();
chkDns2 = new System.Windows.Forms.CheckBox();
chkDns1 = new System.Windows.Forms.CheckBox();
CustomDns2 = new System.Windows.Forms.TextBox();
CustomDns1 = new System.Windows.Forms.TextBox();
lblCustom2 = new System.Windows.Forms.Label();
lblCustom1 = new System.Windows.Forms.Label();
UseCustomServers = new System.Windows.Forms.CheckBox();
dnsList2 = new System.Windows.Forms.ComboBox();
dnsList1 = new System.Windows.Forms.ComboBox();
lblDns2 = new System.Windows.Forms.Label();
lblDns1 = new System.Windows.Forms.Label();
panel2 = new System.Windows.Forms.Panel();
StatusBox = new System.Windows.Forms.ListBox();
ResultView = new System.Windows.Forms.ListView();
Url = new System.Windows.Forms.ColumnHeader();
DNS1IP = new System.Windows.Forms.ColumnHeader();
DNS1Performance = new System.Windows.Forms.ColumnHeader();
DNS2IP = new System.Windows.Forms.ColumnHeader();
DNS2Performance = new System.Windows.Forms.ColumnHeader();
panel3 = new System.Windows.Forms.Panel();
btnResolveHost = new System.Windows.Forms.Button();
btnResolveIP = new System.Windows.Forms.Button();
txtResolveHost = new System.Windows.Forms.TextBox();
txtResolveIP = new System.Windows.Forms.TextBox();
label5 = new System.Windows.Forms.Label();
label1 = new System.Windows.Forms.Label();
panel1.SuspendLayout();
((System.ComponentModel.ISupportInitialize)numericUpDown1).BeginInit(); ((System.ComponentModel.ISupportInitialize)numericUpDown1).BeginInit();
panel2.SuspendLayout();
panel3.SuspendLayout();
SuspendLayout(); SuspendLayout();
// //
// RunTest
//
RunTest.BackColor = System.Drawing.Color.FromArgb(192, 255, 192);
RunTest.Location = new System.Drawing.Point(1068, 1539);
RunTest.Margin = new System.Windows.Forms.Padding(8, 7, 8, 7);
RunTest.Name = "RunTest";
RunTest.Size = new System.Drawing.Size(435, 115);
RunTest.TabIndex = 12;
RunTest.Text = "Run Test";
RunTest.UseVisualStyleBackColor = false;
RunTest.Click += RunTest_Click;
//
// panel1
//
panel1.BackColor = System.Drawing.SystemColors.ControlLight;
panel1.Controls.Add(comboBox1);
panel1.Controls.Add(numericUpDown1);
panel1.Controls.Add(label3);
panel1.Controls.Add(chkDns2);
panel1.Controls.Add(chkDns1);
panel1.Controls.Add(CustomDns2);
panel1.Controls.Add(CustomDns1);
panel1.Controls.Add(lblCustom2);
panel1.Controls.Add(lblCustom1);
panel1.Controls.Add(UseCustomServers);
panel1.Controls.Add(dnsList2);
panel1.Controls.Add(dnsList1);
panel1.Controls.Add(lblDns2);
panel1.Controls.Add(lblDns1);
panel1.Location = new System.Drawing.Point(155, 294);
panel1.Name = "panel1";
panel1.Size = new System.Drawing.Size(2209, 396);
panel1.TabIndex = 24;
//
// comboBox1
//
comboBox1.FormattingEnabled = true;
comboBox1.Items.AddRange(new object[] { "A", "NS", "CNAME", "MX", "TXT" });
comboBox1.Location = new System.Drawing.Point(1583, 71);
comboBox1.Name = "comboBox1";
comboBox1.Size = new System.Drawing.Size(302, 49);
comboBox1.TabIndex = 59;
comboBox1.SelectedIndexChanged += comboBox1_SelectedIndexChanged;
//
// numericUpDown1
//
numericUpDown1.Location = new System.Drawing.Point(804, 147);
numericUpDown1.Maximum = new decimal(new int[] { 1000000000, 0, 0, 0 });
numericUpDown1.Minimum = new decimal(new int[] { 1, 0, 0, 0 });
numericUpDown1.Name = "numericUpDown1";
numericUpDown1.Size = new System.Drawing.Size(120, 47);
numericUpDown1.TabIndex = 58;
numericUpDown1.Value = new decimal(new int[] { 20, 0, 0, 0 });
//
// label3
//
label3.AutoSize = true;
label3.Location = new System.Drawing.Point(566, 147);
label3.Name = "label3";
label3.Size = new System.Drawing.Size(210, 41);
label3.TabIndex = 57;
label3.Text = "Total domains:";
//
// chkDns2
//
chkDns2.AutoSize = true;
chkDns2.Checked = true;
chkDns2.CheckState = System.Windows.Forms.CheckState.Checked;
chkDns2.Location = new System.Drawing.Point(1071, 147);
chkDns2.Name = "chkDns2";
chkDns2.Size = new System.Drawing.Size(251, 45);
chkDns2.TabIndex = 45;
chkDns2.Text = "Test dns server";
chkDns2.UseVisualStyleBackColor = true;
chkDns2.CheckedChanged += chkDns2_CheckedChanged;
//
// chkDns1
//
chkDns1.AutoSize = true;
chkDns1.Checked = true;
chkDns1.CheckState = System.Windows.Forms.CheckState.Checked;
chkDns1.Location = new System.Drawing.Point(46, 147);
chkDns1.Name = "chkDns1";
chkDns1.Size = new System.Drawing.Size(251, 45);
chkDns1.TabIndex = 44;
chkDns1.Text = "Test dns server";
chkDns1.UseVisualStyleBackColor = true;
chkDns1.CheckedChanged += chkDns1_CheckedChanged;
//
// CustomDns2
//
CustomDns2.Enabled = false;
CustomDns2.Location = new System.Drawing.Point(1318, 297);
CustomDns2.Margin = new System.Windows.Forms.Padding(8, 7, 8, 7);
CustomDns2.Name = "CustomDns2";
CustomDns2.Size = new System.Drawing.Size(668, 47);
CustomDns2.TabIndex = 43;
CustomDns2.Visible = false;
//
// CustomDns1
//
CustomDns1.BackColor = System.Drawing.Color.White;
CustomDns1.Enabled = false;
CustomDns1.Location = new System.Drawing.Point(299, 291);
CustomDns1.Margin = new System.Windows.Forms.Padding(8, 7, 8, 7);
CustomDns1.Name = "CustomDns1";
CustomDns1.Size = new System.Drawing.Size(625, 47);
CustomDns1.TabIndex = 42;
CustomDns1.Visible = false;
//
// lblCustom2
//
lblCustom2.AutoSize = true;
lblCustom2.Location = new System.Drawing.Point(1065, 301);
lblCustom2.Margin = new System.Windows.Forms.Padding(8, 0, 8, 0);
lblCustom2.Name = "lblCustom2";
lblCustom2.Size = new System.Drawing.Size(219, 41);
lblCustom2.TabIndex = 41;
lblCustom2.Text = "Custom Dns 2: ";
lblCustom2.Visible = false;
//
// lblCustom1
//
lblCustom1.AutoSize = true;
lblCustom1.Location = new System.Drawing.Point(46, 295);
lblCustom1.Margin = new System.Windows.Forms.Padding(8, 0, 8, 0);
lblCustom1.Name = "lblCustom1";
lblCustom1.Size = new System.Drawing.Size(219, 41);
lblCustom1.TabIndex = 40;
lblCustom1.Text = "Custom Dns 1: ";
lblCustom1.Visible = false;
//
// UseCustomServers
//
UseCustomServers.AutoSize = true;
UseCustomServers.Location = new System.Drawing.Point(1723, 147);
UseCustomServers.Margin = new System.Windows.Forms.Padding(8, 7, 8, 7);
UseCustomServers.Name = "UseCustomServers";
UseCustomServers.Size = new System.Drawing.Size(262, 45);
UseCustomServers.TabIndex = 39;
UseCustomServers.Text = "Custom Servers";
UseCustomServers.UseVisualStyleBackColor = true;
UseCustomServers.CheckedChanged += UseCustomServers_CheckedChanged;
//
// dnsList2
//
dnsList2.FormattingEnabled = true;
dnsList2.ItemHeight = 41;
dnsList2.Location = new System.Drawing.Point(1181, 71);
dnsList2.Margin = new System.Windows.Forms.Padding(8, 7, 8, 7);
dnsList2.Name = "dnsList2";
dnsList2.Size = new System.Drawing.Size(320, 49);
dnsList2.TabIndex = 38;
//
// dnsList1
//
dnsList1.FormattingEnabled = true;
dnsList1.ItemHeight = 41;
dnsList1.Location = new System.Drawing.Point(168, 71);
dnsList1.Margin = new System.Windows.Forms.Padding(8, 7, 8, 7);
dnsList1.Name = "dnsList1";
dnsList1.Size = new System.Drawing.Size(451, 49);
dnsList1.TabIndex = 37;
//
// lblDns2
//
lblDns2.AutoSize = true;
lblDns2.Location = new System.Drawing.Point(1065, 79);
lblDns2.Margin = new System.Windows.Forms.Padding(8, 0, 8, 0);
lblDns2.Name = "lblDns2";
lblDns2.Size = new System.Drawing.Size(100, 41);
lblDns2.TabIndex = 36;
lblDns2.Text = "Dns 2:";
//
// lblDns1
//
lblDns1.AutoSize = true;
lblDns1.Location = new System.Drawing.Point(46, 79);
lblDns1.Margin = new System.Windows.Forms.Padding(8, 0, 8, 0);
lblDns1.Name = "lblDns1";
lblDns1.Size = new System.Drawing.Size(100, 41);
lblDns1.TabIndex = 35;
lblDns1.Text = "Dns 1:";
//
// panel2
//
panel2.BackColor = System.Drawing.SystemColors.ControlLight;
panel2.Controls.Add(StatusBox);
panel2.Controls.Add(ResultView);
panel2.Location = new System.Drawing.Point(145, 765);
panel2.Name = "panel2";
panel2.Size = new System.Drawing.Size(2219, 745);
panel2.TabIndex = 25;
//
// StatusBox
//
StatusBox.FormattingEnabled = true;
StatusBox.HorizontalScrollbar = true;
StatusBox.ItemHeight = 41;
StatusBox.Location = new System.Drawing.Point(56, 571);
StatusBox.Margin = new System.Windows.Forms.Padding(8, 7, 8, 7);
StatusBox.Name = "StatusBox";
StatusBox.Size = new System.Drawing.Size(2126, 127);
StatusBox.TabIndex = 25;
//
// ResultView // ResultView
// //
ResultView.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] { WebName, DNS1IP, DNS1Timing, DNS2IP, DNS2Timing }); ResultView.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] { Url, DNS1IP, DNS1Performance, DNS2IP, DNS2Performance });
ResultView.GridLines = true; ResultView.GridLines = true;
ResultView.HeaderStyle = System.Windows.Forms.ColumnHeaderStyle.Nonclickable; ResultView.HeaderStyle = System.Windows.Forms.ColumnHeaderStyle.Nonclickable;
ResultView.Location = new System.Drawing.Point(155, 469); ResultView.Location = new System.Drawing.Point(56, 49);
ResultView.Margin = new System.Windows.Forms.Padding(8, 7, 8, 7); ResultView.Margin = new System.Windows.Forms.Padding(8, 7, 8, 7);
ResultView.MultiSelect = false; ResultView.MultiSelect = false;
ResultView.Name = "ResultView"; ResultView.Name = "ResultView";
ResultView.Size = new System.Drawing.Size(2209, 663); ResultView.Size = new System.Drawing.Size(2126, 487);
ResultView.TabIndex = 11; ResultView.TabIndex = 24;
ResultView.UseCompatibleStateImageBehavior = false; ResultView.UseCompatibleStateImageBehavior = false;
ResultView.View = System.Windows.Forms.View.Details; ResultView.View = System.Windows.Forms.View.Details;
// //
// WebName // Url
// //
WebName.Text = "URL"; Url.Text = "URL";
WebName.Width = 160; Url.Width = 160;
// //
// DNS1IP // DNS1IP
// //
@ -86,11 +296,11 @@
DNS1IP.TextAlign = System.Windows.Forms.HorizontalAlignment.Center; DNS1IP.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
DNS1IP.Width = 140; DNS1IP.Width = 140;
// //
// DNS1Timing // DNS1Performance
// //
DNS1Timing.Text = "DNS 1 Timing"; DNS1Performance.Text = "DNS 1 Performance";
DNS1Timing.TextAlign = System.Windows.Forms.HorizontalAlignment.Center; DNS1Performance.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
DNS1Timing.Width = 120; DNS1Performance.Width = 120;
// //
// DNS2IP // DNS2IP
// //
@ -98,242 +308,77 @@
DNS2IP.TextAlign = System.Windows.Forms.HorizontalAlignment.Center; DNS2IP.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
DNS2IP.Width = 140; DNS2IP.Width = 140;
// //
// DNS2Timing // DNS2Performance
// //
DNS2Timing.Text = "DNS 2 Timing"; DNS2Performance.Text = "DNS 2 Performance";
DNS2Timing.TextAlign = System.Windows.Forms.HorizontalAlignment.Center; DNS2Performance.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
DNS2Timing.Width = 120; DNS2Performance.Width = 120;
// //
// RunTest // panel3
// //
RunTest.Location = new System.Drawing.Point(1131, 1152); panel3.BackColor = System.Drawing.SystemColors.ControlLight;
RunTest.Margin = new System.Windows.Forms.Padding(8, 7, 8, 7); panel3.Controls.Add(btnResolveHost);
RunTest.Name = "RunTest"; panel3.Controls.Add(btnResolveIP);
RunTest.Size = new System.Drawing.Size(200, 55); panel3.Controls.Add(txtResolveHost);
RunTest.TabIndex = 12; panel3.Controls.Add(txtResolveIP);
RunTest.Text = "Run Test"; panel3.Controls.Add(label5);
RunTest.Click += RunTest_Click; panel3.Controls.Add(label1);
// panel3.Location = new System.Drawing.Point(155, 45);
// lblDns1 panel3.Name = "panel3";
// panel3.Size = new System.Drawing.Size(2209, 175);
lblDns1.AutoSize = true; panel3.TabIndex = 26;
lblDns1.Location = new System.Drawing.Point(155, 167);
lblDns1.Margin = new System.Windows.Forms.Padding(8, 0, 8, 0);
lblDns1.Name = "lblDns1";
lblDns1.Size = new System.Drawing.Size(100, 41);
lblDns1.TabIndex = 13;
lblDns1.Text = "Dns 1:";
//
// lblDns2
//
lblDns2.AutoSize = true;
lblDns2.Location = new System.Drawing.Point(1174, 173);
lblDns2.Margin = new System.Windows.Forms.Padding(8, 0, 8, 0);
lblDns2.Name = "lblDns2";
lblDns2.Size = new System.Drawing.Size(100, 41);
lblDns2.TabIndex = 14;
lblDns2.Text = "Dns 2:";
//
// dnsList1
//
dnsList1.FormattingEnabled = true;
dnsList1.ItemHeight = 41;
dnsList1.Location = new System.Drawing.Point(277, 155);
dnsList1.Margin = new System.Windows.Forms.Padding(8, 7, 8, 7);
dnsList1.Name = "dnsList1";
dnsList1.Size = new System.Drawing.Size(756, 49);
dnsList1.TabIndex = 15;
//
// dnsList2
//
dnsList2.FormattingEnabled = true;
dnsList2.ItemHeight = 41;
dnsList2.Location = new System.Drawing.Point(1307, 161);
dnsList2.Margin = new System.Windows.Forms.Padding(8, 7, 8, 7);
dnsList2.Name = "dnsList2";
dnsList2.Size = new System.Drawing.Size(788, 49);
dnsList2.TabIndex = 16;
//
// UseCustomServers
//
UseCustomServers.AutoSize = true;
UseCustomServers.Location = new System.Drawing.Point(2169, 173);
UseCustomServers.Margin = new System.Windows.Forms.Padding(8, 7, 8, 7);
UseCustomServers.Name = "UseCustomServers";
UseCustomServers.Size = new System.Drawing.Size(262, 45);
UseCustomServers.TabIndex = 17;
UseCustomServers.Text = "Custom Servers";
UseCustomServers.UseVisualStyleBackColor = true;
UseCustomServers.CheckedChanged += UseCustomServers_CheckedChanged;
//
// lblCustom1
//
lblCustom1.AutoSize = true;
lblCustom1.Location = new System.Drawing.Point(155, 328);
lblCustom1.Margin = new System.Windows.Forms.Padding(8, 0, 8, 0);
lblCustom1.Name = "lblCustom1";
lblCustom1.Size = new System.Drawing.Size(219, 41);
lblCustom1.TabIndex = 18;
lblCustom1.Text = "Custom Dns 1: ";
lblCustom1.Visible = false;
//
// lblCustom2
//
lblCustom2.AutoSize = true;
lblCustom2.Location = new System.Drawing.Point(1174, 334);
lblCustom2.Margin = new System.Windows.Forms.Padding(8, 0, 8, 0);
lblCustom2.Name = "lblCustom2";
lblCustom2.Size = new System.Drawing.Size(219, 41);
lblCustom2.TabIndex = 19;
lblCustom2.Text = "Custom Dns 2: ";
lblCustom2.Visible = false;
//
// CustomDns1
//
CustomDns1.BackColor = System.Drawing.Color.White;
CustomDns1.Enabled = false;
CustomDns1.Location = new System.Drawing.Point(408, 324);
CustomDns1.Margin = new System.Windows.Forms.Padding(8, 7, 8, 7);
CustomDns1.Name = "CustomDns1";
CustomDns1.Size = new System.Drawing.Size(625, 47);
CustomDns1.TabIndex = 20;
CustomDns1.Visible = false;
//
// CustomDns2
//
CustomDns2.Enabled = false;
CustomDns2.Location = new System.Drawing.Point(1427, 330);
CustomDns2.Margin = new System.Windows.Forms.Padding(8, 7, 8, 7);
CustomDns2.Name = "CustomDns2";
CustomDns2.Size = new System.Drawing.Size(668, 47);
CustomDns2.TabIndex = 21;
CustomDns2.Visible = false;
//
// lslStatus
//
lslStatus.AutoSize = true;
lslStatus.Location = new System.Drawing.Point(155, 1219);
lslStatus.Margin = new System.Windows.Forms.Padding(8, 0, 8, 0);
lslStatus.Name = "lslStatus";
lslStatus.Size = new System.Drawing.Size(105, 41);
lslStatus.TabIndex = 22;
lslStatus.Text = "Status:";
//
// StatusBox
//
StatusBox.FormattingEnabled = true;
StatusBox.HorizontalScrollbar = true;
StatusBox.ItemHeight = 41;
StatusBox.Location = new System.Drawing.Point(155, 1271);
StatusBox.Margin = new System.Windows.Forms.Padding(8, 7, 8, 7);
StatusBox.Name = "StatusBox";
StatusBox.Size = new System.Drawing.Size(2209, 373);
StatusBox.TabIndex = 23;
//
// chkDns1
//
chkDns1.AutoSize = true;
chkDns1.Checked = true;
chkDns1.CheckState = System.Windows.Forms.CheckState.Checked;
chkDns1.Location = new System.Drawing.Point(277, 235);
chkDns1.Name = "chkDns1";
chkDns1.Size = new System.Drawing.Size(251, 45);
chkDns1.TabIndex = 24;
chkDns1.Text = "Test dns server";
chkDns1.UseVisualStyleBackColor = true;
//
// chkDns2
//
chkDns2.AutoSize = true;
chkDns2.Checked = true;
chkDns2.CheckState = System.Windows.Forms.CheckState.Checked;
chkDns2.Location = new System.Drawing.Point(1307, 241);
chkDns2.Name = "chkDns2";
chkDns2.Size = new System.Drawing.Size(251, 45);
chkDns2.TabIndex = 25;
chkDns2.Text = "Test dns server";
chkDns2.UseVisualStyleBackColor = true;
//
// label1
//
label1.AutoSize = true;
label1.Location = new System.Drawing.Point(155, 27);
label1.Name = "label1";
label1.Size = new System.Drawing.Size(270, 41);
label1.TabIndex = 26;
label1.Text = "Resolve ip address:";
//
// label2
//
label2.AutoSize = true;
label2.Location = new System.Drawing.Point(1180, 33);
label2.Name = "label2";
label2.Size = new System.Drawing.Size(266, 41);
label2.TabIndex = 27;
label2.Text = "Resolve hostname:";
//
// txtResolveIP
//
txtResolveIP.Location = new System.Drawing.Point(425, 21);
txtResolveIP.Name = "txtResolveIP";
txtResolveIP.Size = new System.Drawing.Size(608, 47);
txtResolveIP.TabIndex = 28;
//
// txtResolveHost
//
txtResolveHost.Location = new System.Drawing.Point(1443, 27);
txtResolveHost.Name = "txtResolveHost";
txtResolveHost.Size = new System.Drawing.Size(651, 47);
txtResolveHost.TabIndex = 29;
//
// btnResolveIP
//
btnResolveIP.Location = new System.Drawing.Point(425, 75);
btnResolveIP.Name = "btnResolveIP";
btnResolveIP.Size = new System.Drawing.Size(205, 51);
btnResolveIP.TabIndex = 30;
btnResolveIP.Text = "Resolve";
btnResolveIP.UseVisualStyleBackColor = true;
btnResolveIP.Click += btnResolveIP_Click;
// //
// btnResolveHost // btnResolveHost
// //
btnResolveHost.Location = new System.Drawing.Point(1443, 81); btnResolveHost.Location = new System.Drawing.Point(1583, 104);
btnResolveHost.Name = "btnResolveHost"; btnResolveHost.Name = "btnResolveHost";
btnResolveHost.Size = new System.Drawing.Size(167, 45); btnResolveHost.Size = new System.Drawing.Size(240, 51);
btnResolveHost.TabIndex = 31; btnResolveHost.TabIndex = 71;
btnResolveHost.Text = "Resolve"; btnResolveHost.Text = "Resolve";
btnResolveHost.UseVisualStyleBackColor = true; btnResolveHost.UseVisualStyleBackColor = true;
btnResolveHost.Click += btnResolveHost_Click; btnResolveHost.Click += btnResolveHost_Click;
// //
// label3 // btnResolveIP
// //
label3.AutoSize = true; btnResolveIP.Location = new System.Drawing.Point(405, 104);
label3.Location = new System.Drawing.Point(675, 238); btnResolveIP.Name = "btnResolveIP";
label3.Name = "label3"; btnResolveIP.Size = new System.Drawing.Size(240, 51);
label3.Size = new System.Drawing.Size(210, 41); btnResolveIP.TabIndex = 70;
label3.TabIndex = 32; btnResolveIP.Text = "Resolve";
label3.Text = "Total domains:"; btnResolveIP.UseVisualStyleBackColor = true;
btnResolveIP.Click += btnResolveIP_Click;
// //
// numericUpDown1 // txtResolveHost
// //
numericUpDown1.Location = new System.Drawing.Point(913, 238); txtResolveHost.Location = new System.Drawing.Point(1583, 41);
numericUpDown1.Maximum = new decimal(new int[] { 1000000000, 0, 0, 0 }); txtResolveHost.Name = "txtResolveHost";
numericUpDown1.Minimum = new decimal(new int[] { 1, 0, 0, 0 }); txtResolveHost.Size = new System.Drawing.Size(551, 47);
numericUpDown1.Name = "numericUpDown1"; txtResolveHost.TabIndex = 69;
numericUpDown1.Size = new System.Drawing.Size(120, 47);
numericUpDown1.TabIndex = 33;
numericUpDown1.Value = new decimal(new int[] { 20, 0, 0, 0 });
// //
// comboBox1 // txtResolveIP
// //
comboBox1.FormattingEnabled = true; txtResolveIP.Location = new System.Drawing.Point(405, 41);
comboBox1.Items.AddRange(new object[] { "A", "NS", "CNAME", "MX", "TXT" }); txtResolveIP.Name = "txtResolveIP";
comboBox1.Location = new System.Drawing.Point(2129, 251); txtResolveIP.Size = new System.Drawing.Size(551, 47);
comboBox1.Name = "comboBox1"; txtResolveIP.TabIndex = 68;
comboBox1.Size = new System.Drawing.Size(302, 49); //
comboBox1.TabIndex = 34; // label5
comboBox1.SelectedIndexChanged += comboBox1_SelectedIndexChanged; //
label5.AutoSize = true;
label5.Location = new System.Drawing.Point(1267, 41);
label5.Name = "label5";
label5.Size = new System.Drawing.Size(266, 41);
label5.TabIndex = 67;
label5.Text = "Resolve hostname:";
//
// label1
//
label1.AutoSize = true;
label1.Location = new System.Drawing.Point(72, 41);
label1.Name = "label1";
label1.Size = new System.Drawing.Size(270, 41);
label1.TabIndex = 66;
label1.Text = "Resolve ip address:";
// //
// MainForm // MainForm
// //
@ -342,30 +387,10 @@
AutoSize = true; AutoSize = true;
AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink; AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
ClientSize = new System.Drawing.Size(2517, 1693); ClientSize = new System.Drawing.Size(2517, 1693);
Controls.Add(comboBox1); Controls.Add(panel3);
Controls.Add(numericUpDown1); Controls.Add(panel2);
Controls.Add(label3); Controls.Add(panel1);
Controls.Add(btnResolveHost);
Controls.Add(btnResolveIP);
Controls.Add(txtResolveHost);
Controls.Add(txtResolveIP);
Controls.Add(label2);
Controls.Add(label1);
Controls.Add(chkDns2);
Controls.Add(chkDns1);
Controls.Add(StatusBox);
Controls.Add(lslStatus);
Controls.Add(CustomDns2);
Controls.Add(CustomDns1);
Controls.Add(lblCustom2);
Controls.Add(lblCustom1);
Controls.Add(UseCustomServers);
Controls.Add(dnsList2);
Controls.Add(dnsList1);
Controls.Add(lblDns2);
Controls.Add(lblDns1);
Controls.Add(RunTest); Controls.Add(RunTest);
Controls.Add(ResultView);
Icon = (System.Drawing.Icon)resources.GetObject("$this.Icon"); Icon = (System.Drawing.Icon)resources.GetObject("$this.Icon");
Margin = new System.Windows.Forms.Padding(8, 7, 8, 7); Margin = new System.Windows.Forms.Padding(8, 7, 8, 7);
MaximizeBox = false; MaximizeBox = false;
@ -373,42 +398,47 @@
StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen; StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
Text = "EonaCat.DnsTester"; Text = "EonaCat.DnsTester";
Load += TesterUI_Load; Load += TesterUI_Load;
panel1.ResumeLayout(false);
panel1.PerformLayout();
((System.ComponentModel.ISupportInitialize)numericUpDown1).EndInit(); ((System.ComponentModel.ISupportInitialize)numericUpDown1).EndInit();
panel2.ResumeLayout(false);
panel3.ResumeLayout(false);
panel3.PerformLayout();
ResumeLayout(false); ResumeLayout(false);
PerformLayout();
} }
#endregion #endregion
private System.Windows.Forms.ListView ResultView;
private System.Windows.Forms.ColumnHeader WebName;
private System.Windows.Forms.ColumnHeader DNS1IP;
private System.Windows.Forms.ColumnHeader DNS1Timing;
private System.Windows.Forms.ColumnHeader DNS2IP;
private System.Windows.Forms.ColumnHeader DNS2Timing;
private System.Windows.Forms.Button RunTest; private System.Windows.Forms.Button RunTest;
private System.Windows.Forms.Label lblDns1; private System.Windows.Forms.Panel panel1;
private System.Windows.Forms.Label lblDns2;
private System.Windows.Forms.ComboBox dnsList1;
private System.Windows.Forms.ComboBox dnsList2;
private System.Windows.Forms.CheckBox UseCustomServers;
private System.Windows.Forms.Label lblCustom1;
private System.Windows.Forms.Label lblCustom2;
private System.Windows.Forms.TextBox CustomDns1;
private System.Windows.Forms.TextBox CustomDns2;
private System.Windows.Forms.Label lslStatus;
private System.Windows.Forms.ListBox StatusBox;
private System.Windows.Forms.CheckBox chkDns1;
private System.Windows.Forms.CheckBox chkDns2;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.TextBox txtResolveIP;
private System.Windows.Forms.TextBox txtResolveHost;
private System.Windows.Forms.Button btnResolveIP;
private System.Windows.Forms.Button btnResolveHost;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.NumericUpDown numericUpDown1;
private System.Windows.Forms.ComboBox comboBox1; private System.Windows.Forms.ComboBox comboBox1;
private System.Windows.Forms.NumericUpDown numericUpDown1;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.CheckBox chkDns2;
private System.Windows.Forms.CheckBox chkDns1;
private System.Windows.Forms.TextBox CustomDns2;
private System.Windows.Forms.TextBox CustomDns1;
private System.Windows.Forms.Label lblCustom2;
private System.Windows.Forms.Label lblCustom1;
private System.Windows.Forms.CheckBox UseCustomServers;
private System.Windows.Forms.ComboBox dnsList2;
private System.Windows.Forms.ComboBox dnsList1;
private System.Windows.Forms.Label lblDns2;
private System.Windows.Forms.Label lblDns1;
private System.Windows.Forms.Panel panel2;
private System.Windows.Forms.ListBox StatusBox;
private System.Windows.Forms.ListView ResultView;
private System.Windows.Forms.ColumnHeader Url;
private System.Windows.Forms.ColumnHeader DNS1IP;
private System.Windows.Forms.ColumnHeader DNS1Performance;
private System.Windows.Forms.ColumnHeader DNS2IP;
private System.Windows.Forms.ColumnHeader DNS2Performance;
private System.Windows.Forms.Panel panel3;
private System.Windows.Forms.Button btnResolveHost;
private System.Windows.Forms.Button btnResolveIP;
private System.Windows.Forms.TextBox txtResolveHost;
private System.Windows.Forms.TextBox txtResolveIP;
private System.Windows.Forms.Label label5;
private System.Windows.Forms.Label label1;
} }
} }

123
EonaCat.DnsTester/MainForm.cs
View File

@ -1,15 +1,11 @@
using System; using System;
using System.Collections.Generic; using System.Collections.Generic;
using System.Data; using System.Data;
using System.DirectoryServices.ActiveDirectory; using System.Globalization;
using System.IO; using System.IO;
using System.Linq; using System.Linq;
using System.Net; using System.Net;
using System.Net.Sockets; using System.Net.Sockets;
using System.Security.Cryptography;
using System.Security.Policy;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks; using System.Threading.Tasks;
using System.Windows.Forms; using System.Windows.Forms;
using EonaCat.DnsTester.Helpers; using EonaCat.DnsTester.Helpers;
@ -18,7 +14,7 @@ namespace EonaCat.DnsTester
{ {
public partial class MainForm : Form public partial class MainForm : Form
{ {
private bool useCustomDnsServers; private bool _useCustomDnsServers;
private string _dnsServer1, _dnsServer2; private string _dnsServer1, _dnsServer2;
private DnsRecordType _recordType; private DnsRecordType _recordType;
private int _dnsTotalChecked; private int _dnsTotalChecked;
@ -32,6 +28,21 @@ namespace EonaCat.DnsTester
private async void RunTest_Click(object sender, EventArgs e) private async void RunTest_Click(object sender, EventArgs e)
{ {
if (!_useCustomDnsServers)
{
if (!chkDns1.Checked && !chkDns2.Checked)
{
MessageBox.Show("Please enable DNS 1 or 2 before starting");
return;
}
}
if (_useCustomDnsServers && (!chkDns1.Checked || chkDns2.Checked))
{
MessageBox.Show("Please enable DNS 1 or 2 before using custom Dns");
return;
}
List<string> urls = new List<string>(); List<string> urls = new List<string>();
SetupView(); SetupView();
@ -48,13 +59,13 @@ namespace EonaCat.DnsTester
} }
IsRunning = true; IsRunning = true;
Process(_recordType, urls.ToArray(), _dnsServer1, _dnsServer2); await Process(_recordType, urls.ToArray(), _dnsServer1, _dnsServer2);
IsRunning = false; IsRunning = false;
} }
private void SetupView() private void SetupView()
{ {
if (useCustomDnsServers) if (_useCustomDnsServers)
{ {
_dnsTotalChecked = 0; _dnsTotalChecked = 0;
if (chkDns1.Checked) if (chkDns1.Checked)
@ -150,39 +161,22 @@ namespace EonaCat.DnsTester
private void UseCustomServers_CheckedChanged(object sender, EventArgs e) private void UseCustomServers_CheckedChanged(object sender, EventArgs e)
{ {
useCustomDnsServers = UseCustomServers.Checked; _useCustomDnsServers = UseCustomServers.Checked;
SetUI(); SetUI();
} }
private void SetUI() private void SetUI()
{ {
if (useCustomDnsServers) dnsList1.Enabled = !_useCustomDnsServers && chkDns1.Checked;
{ dnsList2.Enabled = !_useCustomDnsServers && chkDns2.Checked;
dnsList1.Enabled = false;
dnsList2.Enabled = false;
CustomDns1.Enabled = true; CustomDns1.Enabled = _useCustomDnsServers && chkDns1.Checked;
CustomDns2.Enabled = true; CustomDns2.Enabled = _useCustomDnsServers && chkDns2.Checked;
CustomDns1.Visible = true; CustomDns1.Visible = _useCustomDnsServers && chkDns1.Checked;
CustomDns2.Visible = true; CustomDns2.Visible = _useCustomDnsServers && chkDns2.Checked;
lblCustom1.Visible = true; lblCustom1.Visible = _useCustomDnsServers && chkDns1.Checked;
lblCustom2.Visible = true; lblCustom2.Visible = _useCustomDnsServers && chkDns2.Checked;
}
else
{
dnsList1.Enabled = true;
dnsList2.Enabled = true;
CustomDns1.Enabled = false;
CustomDns2.Enabled = false;
CustomDns1.Visible = false;
CustomDns2.Visible = false;
lblCustom1.Visible = false;
lblCustom2.Visible = false;
}
} }
@ -270,14 +264,14 @@ namespace EonaCat.DnsTester
private void ProcessResponse(DnsResponse dnsResponse) private void ProcessResponse(DnsResponse dnsResponse)
{ {
if (dnsResponse == null || dnsResponse.Answers == null || !dnsResponse.Answers.Any()) if (dnsResponse?.Answers == null || !dnsResponse.Answers.Any())
{ {
return; return;
} }
// Retrieve stopTime // Retrieve stopTime
var stopTime = DateTime.Now.Ticks; var stopTime = DateTime.Now.Ticks;
var deltaTime = Convert.ToString((double)(stopTime - dnsResponse.StartTime) / 10000000); var deltaTime = Convert.ToString((double)(stopTime - dnsResponse.StartTime) / 10000000, CultureInfo.InvariantCulture);
SetStatus($"ResourceRecord: Name: {dnsResponse.Answers.FirstOrDefault().Name} : Type : {dnsResponse.Answers.FirstOrDefault().Type} : Data : {dnsResponse.Answers.FirstOrDefault().Data}"); SetStatus($"ResourceRecord: Name: {dnsResponse.Answers.FirstOrDefault().Name} : Type : {dnsResponse.Answers.FirstOrDefault().Type} : Data : {dnsResponse.Answers.FirstOrDefault().Data}");
@ -329,47 +323,48 @@ namespace EonaCat.DnsTester
return; return;
} }
try await Task.Run(() =>
{ {
await Task.Run(() => try
{ {
var dnsEntry = Dns.GetHostEntry(iPAddress); var dnsEntry = Dns.GetHostEntry(iPAddress);
txtResolveHost.Invoke(() => txtResolveHost.Invoke(() =>
{ {
txtResolveHost.Text = dnsEntry.HostName; txtResolveHost.Text = dnsEntry.HostName;
}); });
}); }
} catch (Exception)
catch (Exception) {
{ MessageBox.Show($"Could not get hostname for IP address '{txtResolveIP.Text}'");
MessageBox.Show($"Could not get hostname for IP address '{txtResolveIP.Text}'"); }
} });
} }
private async void btnResolveHost_Click(object sender, EventArgs e) private async void btnResolveHost_Click(object sender, EventArgs e)
{ {
if (string.IsNullOrWhiteSpace(txtResolveHost.Text)) if (string.IsNullOrWhiteSpace(txtResolveHost.Text))
{ {
MessageBox.Show("Please enter an hostname to resolve"); MessageBox.Show("Please enter a hostname to resolve");
return; return;
} }
try
await Task.Run(() =>
{ {
await Task.Run(() => try
{ {
var dnsEntry = Dns.GetHostEntry(txtResolveHost.Text); var dnsEntry = Dns.GetHostEntry(txtResolveHost.Text);
txtResolveHost.Invoke(() => txtResolveHost.Invoke(() =>
{ {
txtResolveIP.Text = dnsEntry.AddressList.Where(x => x.AddressFamily == AddressFamily.InterNetwork).FirstOrDefault().Address.ToString(); txtResolveIP.Text = dnsEntry.AddressList.Where(x => x.AddressFamily == AddressFamily.InterNetwork).FirstOrDefault().Address.ToString();
}); });
}); }
} catch (Exception)
catch (Exception) {
{ MessageBox.Show($"Could not get IP address for hostname '{txtResolveHost.Text}'");
MessageBox.Show($"Could not get hostname for IP address '{txtResolveIP.Text}'"); }
} });
} }
private void SetStatus(string text) private void SetStatus(string text)
@ -396,5 +391,15 @@ namespace EonaCat.DnsTester
_recordType = queryType; _recordType = queryType;
} }
} }
private void chkDns2_CheckedChanged(object sender, EventArgs e)
{
SetUI();
}
private void chkDns1_CheckedChanged(object sender, EventArgs e)
{
SetUI();
}
} }
} }