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using System; |
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using System.Collections.Generic; |
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using System.Linq; |
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using System.Net.Sockets; |
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using System.Threading.Tasks; |
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using Libplanet.Stun; |
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namespace Libplanet.Net |
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{
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public class IceServer |
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{
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public IceServer( |
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IEnumerable<string> urls, |
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string username = null, |
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string credential = null) |
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: this(urls.Select(u => new Uri(u)), username, credential) |
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{
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}
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public IceServer( |
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IEnumerable<Uri> urls, |
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string username = null, |
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string credential = null) |
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{
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Urls = urls; |
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Username = username; |
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Credential = credential; |
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}
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public IEnumerable<Uri> Urls { get; } |
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public string Username { get; } |
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public string Credential { get; } |
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internal static async Task<TurnClient> CreateTurnClient( |
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IEnumerable<IceServer> iceServers) |
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{
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foreach (IceServer server in iceServers) |
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{
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foreach (Uri url in server.Urls) |
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{
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if (url.Scheme != "turn") |
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{
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throw new ArgumentException($"{url} isn't valid TURN url."); |
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}
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try
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{
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int port = url.IsDefaultPort |
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? TurnClient.TurnDefaultPort |
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: url.Port; |
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var turnClient = new TurnClient( |
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url.Host, |
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server.Username, |
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server.Credential, |
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port); |
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// Check connectability
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await turnClient.GetMappedAddressAsync(); |
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return turnClient; |
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}
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catch (ArgumentException) |
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{
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}
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catch (SocketException) |
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{
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}
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}
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}
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throw new IceServerException("Can't find suitable server."); |
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}
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}
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}
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