Init
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1b7ad04c24
3
.gitignore
vendored
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3
.gitignore
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/.vs
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/dns-sd-tester/obj
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/dns-sd-tester/bin
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25
dns-sd-tester.sln
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25
dns-sd-tester.sln
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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 16
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VisualStudioVersion = 16.0.29806.167
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "dns-sd-tester", "dns-sd-tester\dns-sd-tester.csproj", "{0C9A06D3-AF6B-4DA2-8A50-9B98D30E4B42}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{0C9A06D3-AF6B-4DA2-8A50-9B98D30E4B42}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{0C9A06D3-AF6B-4DA2-8A50-9B98D30E4B42}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{0C9A06D3-AF6B-4DA2-8A50-9B98D30E4B42}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{0C9A06D3-AF6B-4DA2-8A50-9B98D30E4B42}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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GlobalSection(ExtensibilityGlobals) = postSolution
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SolutionGuid = {652E9673-D449-4290-8C87-B5E9564FB4A7}
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EndGlobalSection
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EndGlobal
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141
dns-sd-tester/Program.cs
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141
dns-sd-tester/Program.cs
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using System;
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using System.Collections.Generic;
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using System.Net.Http;
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using System.Text.Json;
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using System.Threading.Tasks;
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using Makaretu.Dns;
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namespace dns_sd_tester {
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class Program {
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private Dictionary<DnsType, ResourceRecord> DiscoverMulticastService(String address) {
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Console.WriteLine($"Make Request for '{address}'");
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Message query = new Message();
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query.Questions.Add(new Question { Name = address, Type = DnsType.ANY });
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MulticastService mdns = new MulticastService();
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mdns.Start();
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Task<Message> answer = mdns.ResolveAsync(query);
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List<ResourceRecord> data = new List<ResourceRecord>();
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data.AddRange(answer.Result.Answers);
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data.AddRange(answer.Result.AdditionalRecords);
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Dictionary<DnsType, ResourceRecord> ret = new Dictionary<DnsType, ResourceRecord>();
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Console.WriteLine("Get answer for the request");
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if(answer.Status == TaskStatus.RanToCompletion) {
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foreach(ResourceRecord item in data) {
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Console.WriteLine($"{item.Type}: " + item);
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if(!ret.ContainsKey(item.Type)) {
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ret.Add(item.Type, item);
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}
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}
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Console.WriteLine();
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}
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return ret;
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}
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private String ParseDNSAnswer(Dictionary<DnsType, ResourceRecord> answer) {
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Console.WriteLine("Parse the DNS Answer");
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if((answer.ContainsKey(DnsType.A) || answer.ContainsKey(DnsType.AAAA)) && answer.ContainsKey(DnsType.SRV) && answer.ContainsKey(DnsType.TXT)) {
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TXTRecord txt_item = answer[DnsType.TXT] as TXTRecord;
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Dictionary<String, String> text_dic = new Dictionary<String, String>();
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foreach(String item in txt_item.Strings) {
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String[] item_split = item.Split("=");
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text_dic.Add(item_split[0], item_split[1]);
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}
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if(text_dic.ContainsKey("td")) {
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Console.WriteLine($"{txt_item.Type}: " + $"'{txt_item.Name}' {String.Join(" ", txt_item.Strings.ToArray())}");
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Boolean using_a = false;
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if(answer.ContainsKey(DnsType.A)) {
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using_a = true;
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}
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AddressRecord aa_item;
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if(using_a) {
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aa_item = answer[DnsType.A] as AddressRecord;
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Console.WriteLine($"{aa_item.Type}: " + $"host '{aa_item.Name}' at '{aa_item.Address}'");
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} else {
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aa_item = answer[DnsType.AAAA] as AddressRecord;
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Console.WriteLine($"{aa_item.Type}: " + $"host '{aa_item.Name}' at '{aa_item.Address}'");
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}
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SRVRecord srv_item = answer[DnsType.SRV] as SRVRecord;
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Console.WriteLine($"{srv_item.Type}: " + $"service '{srv_item.Name}' on '{srv_item.Target}' at '{srv_item.Port}'");
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String ret = $"http://{aa_item.Address}:{srv_item.Port}{text_dic["td"]}";
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Console.WriteLine($"Combine Answer to {ret}\n");
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return ret;
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}
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}
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return "";
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}
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private String GetTDJson(String guid = "") {
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Dictionary<String, Object> jsonobject = new Dictionary<String, Object>() {
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{ "@context", "https://www.w3.org/2019/wot/td/v1" },
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{ "title", "DNS-SD Test Entry" },
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{ "securityDefinitions", new Dictionary<String, Object>() { { "nosec_sc", new Dictionary<String, Object>() { { "scheme", "nosec" } } } } },
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{ "security", new List<String> () { "nosec_sc" } },
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{ "events", new Dictionary<String, Object>() {
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{ "sensordata", new Dictionary<String, Object>() {
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{ "data", new Dictionary<String, String> () {
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{ "type", "object" }
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} },
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{ "forms", new List<Object>() {
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new Dictionary<String, String> () {
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{ "href", "mqtt://mqtt.example.org:1883/esp8266/sensor/" },
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{ "contentType", "text/plain" },
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{ "op", "subscribeevent" }
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}
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} }
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} }
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} }
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};
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if(guid != "") {
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jsonobject.Add("id", guid);
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}
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return JsonSerializer.Serialize(jsonobject);
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}
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public Program() {
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String conn = this.ParseDNSAnswer(this.DiscoverMulticastService("_wot._tcp.local"));
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String guid = $"urn:dev:ops:{Environment.MachineName}_dns-sd-tester";
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/*Console.WriteLine("Read Registerd devices:");
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Console.WriteLine(WebRequestor.GetInstance(conn).Interact("").Result);
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*/
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Console.WriteLine("Read registerd devices:");
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String jsonresult = WebRequestor.GetInstance(conn).Interact("").Result;
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Console.WriteLine(jsonresult);
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Console.WriteLine("\nDelete every registerd devices:");
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Dictionary<String, JsonElement> queryresult = (Dictionary<String, JsonElement>)JsonSerializer.Deserialize(jsonresult, typeof(Dictionary<String, JsonElement>));
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foreach(JsonElement item in queryresult["items"].EnumerateArray()) {
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foreach(JsonProperty props in item.EnumerateObject()) {
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if(props.Name.ToLower() == "id") {
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Console.WriteLine($"Delete Device {props.Value.GetString()}: " + WebRequestor.GetInstance(conn).Interact($"/{props.Value.GetString()}", "", true, WebRequestor.RequestMethod.DELETE, false).Result);
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}
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}
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}
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Console.WriteLine("\nCreates new Thing Description with system-generated ID");
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Console.WriteLine(WebRequestor.GetInstance(conn).Interact("/", this.GetTDJson(), true, WebRequestor.RequestMethod.POST).Result);
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Console.WriteLine($"Creates new Thing Description with {guid} ID");
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Console.WriteLine(WebRequestor.GetInstance(conn).Interact($"/{guid}", this.GetTDJson(guid), true, WebRequestor.RequestMethod.PUT).Result);
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Console.WriteLine("\nQuery all id's from Elements with Test in title.");
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String jsonidlist = WebRequestor.GetInstance(conn).Interact("?jsonpath=$[?(@.title =~ /Test/i)].id").Result;
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Console.WriteLine(jsonidlist);
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JsonElement idlist = (JsonElement)JsonSerializer.Deserialize(jsonidlist, typeof(JsonElement));
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}
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public static void Main() => new Program();
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}
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}
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62
dns-sd-tester/WebRequestor.cs
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62
dns-sd-tester/WebRequestor.cs
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using System;
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using System.Collections.Generic;
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using System.Net;
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using System.Net.Http;
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using System.Threading.Tasks;
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namespace dns_sd_tester {
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public class WebRequestor {
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private readonly HttpClient client = new HttpClient();
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private static readonly Dictionary<String, WebRequestor> instances = new Dictionary<String, WebRequestor>();
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private String Server {
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get;
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}
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public enum RequestMethod {
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GET,
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POST,
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PUT,
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DELETE
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}
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public static WebRequestor GetInstance(String server) {
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if(!instances.ContainsKey(server)) {
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instances.Add(server, new WebRequestor(server));
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}
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return instances[server];
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}
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private WebRequestor(String server) => this.Server = server;
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public async Task<String> Interact(String address, String json = "", Boolean withoutput = true, RequestMethod method = RequestMethod.GET, Boolean exeptionOnNotSuccess = true) {
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String ret = null;
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try {
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HttpResponseMessage response = null;
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if(method == RequestMethod.POST || method == RequestMethod.PUT) {
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HttpContent content = new StringContent(json);
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content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/json");
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if(method == RequestMethod.POST) {
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response = await this.client.PostAsync(this.Server + address, content);
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} else if(method == RequestMethod.PUT) {
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response = await this.client.PutAsync(this.Server + address, content);
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}
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content.Dispose();
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} else if(method == RequestMethod.GET) {
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response = await this.client.GetAsync(this.Server + address);
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} else if(method == RequestMethod.DELETE) {
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response = await this.client.DeleteAsync(this.Server + address);
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}
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if(!response.IsSuccessStatusCode && exeptionOnNotSuccess) {
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throw new Exception(response.StatusCode + ": " + response.ReasonPhrase);
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}
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if(withoutput && response != null) {
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ret = await response.Content.ReadAsStringAsync();
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}
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} catch(Exception e) {
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throw new WebException($"Error while accessing resource '{address}' on Server '{this.Server}' with method '{method}' and data '{json}'. Error: \n'{e.Message}'");
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}
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return ret;
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}
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}
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}
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13
dns-sd-tester/dns-sd-tester.csproj
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13
dns-sd-tester/dns-sd-tester.csproj
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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFramework>netcoreapp3.1</TargetFramework>
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<RootNamespace>dns_sd_tester</RootNamespace>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="Makaretu.Dns.Multicast" Version="0.27.0" />
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</ItemGroup>
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</Project>
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