Init

TorWebClient/TorClient/Controller/Commands/ExtendCircuitCommand.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace Tor.Controller
+{
+    /// <summary>
+    /// A class containing the command responsible for extending a circuit.
+    /// </summary>
+    internal class ExtendCircuitCommand : Command<Response>
+    {
+        private readonly Circuit circuit;
+        private readonly List<string> routers;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ExtendCircuitCommand"/> class.
+        /// </summary>
+        /// <param name="circuit">The circuit which should be the target of extension. A <c>null</c> value indicates a new circuit.</param>
+        public ExtendCircuitCommand(Circuit circuit)
+        {
+            this.circuit = circuit;
+            this.routers = new List<string>();
+        }
+
+        #region Properties
+
+        /// <summary>
+        /// Gets a collection containing the list of routers which should be extended onto this circuit.
+        /// </summary>
+        public List<string> Routers
+        {
+            get { return routers; }
+        }
+
+        #endregion
+
+        #region Tor.Controller.Command<>
+
+        /// <summary>
+        /// Dispatches the command to the client control port and produces a <typeparamref name="T" /> response result.
+        /// </summary>
+        /// <param name="connection">The control connection where the command should be dispatched.</param>
+        /// <returns>
+        /// A <typeparamref name="T" /> object instance containing the response data.
+        /// </returns>
+        protected override Response Dispatch(Connection connection)
+        {
+            if (routers.Count == 0)
+                return new Response(false);
+
+            int circuitID = 0;
+
+            if (circuit != null)
+                circuitID = circuit.ID;
+
+            StringBuilder builder = new StringBuilder("extendcircuit");
+            builder.AppendFormat(" {0}", circuitID);
+
+            foreach (string router in routers)
+                builder.AppendFormat(" {0}", router);
+
+            if (connection.Write(builder.ToString()))
+            {
+                ConnectionResponse response = connection.Read();
+                return new Response(response.Success);
+            }
+
+            return new Response(false);
+        }
+
+        #endregion
+    }
+}