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websocket-sharp/HttpResponse.cs

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+#region License
+/*
+ * HttpResponse.cs
+ *
+ * The MIT License
+ *
+ * Copyright (c) 2012-2014 sta.blockhead
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#endregion
+
+using System;
+using System.Collections.Specialized;
+using System.IO;
+using System.Text;
+using WebSocketSharp.Net;
+
+namespace WebSocketSharp
+{
+  internal class HttpResponse : HttpBase
+  {
+    #region Private Fields
+
+    private string _code;
+    private string _reason;
+
+    #endregion
+
+    #region Private Constructors
+
+    private HttpResponse (string code, string reason, Version version, NameValueCollection headers)
+      : base (version, headers)
+    {
+      _code = code;
+      _reason = reason;
+    }
+
+    #endregion
+
+    #region Internal Constructors
+
+    internal HttpResponse (HttpStatusCode code)
+      : this (code, code.GetDescription ())
+    {
+    }
+
+    internal HttpResponse (HttpStatusCode code, string reason)
+      : this (((int) code).ToString (), reason, HttpVersion.Version11, new NameValueCollection ())
+    {
+      Headers["Server"] = "websocket-sharp/1.0";
+    }
+
+    #endregion
+
+    #region Public Properties
+
+    public CookieCollection Cookies {
+      get {
+        return Headers.GetCookies (true);
+      }
+    }
+
+    public bool HasConnectionClose {
+      get {
+        var comparison = StringComparison.OrdinalIgnoreCase;
+        return Headers.Contains ("Connection", "close", comparison);
+      }
+    }
+
+    public bool IsProxyAuthenticationRequired {
+      get {
+        return _code == "407";
+      }
+    }
+
+    public bool IsRedirect {
+      get {
+        return _code == "301" || _code == "302";
+      }
+    }
+
+    public bool IsUnauthorized {
+      get {
+        return _code == "401";
+      }
+    }
+
+    public bool IsWebSocketResponse {
+      get {
+        return ProtocolVersion > HttpVersion.Version10
+               && _code == "101"
+               && Headers.Upgrades ("websocket");
+      }
+    }
+
+    public string Reason {
+      get {
+        return _reason;
+      }
+    }
+
+    public string StatusCode {
+      get {
+        return _code;
+      }
+    }
+
+    #endregion
+
+    #region Internal Methods
+
+    internal static HttpResponse CreateCloseResponse (HttpStatusCode code)
+    {
+      var res = new HttpResponse (code);
+      res.Headers["Connection"] = "close";
+
+      return res;
+    }
+
+    internal static HttpResponse CreateUnauthorizedResponse (string challenge)
+    {
+      var res = new HttpResponse (HttpStatusCode.Unauthorized);
+      res.Headers["WWW-Authenticate"] = challenge;
+
+      return res;
+    }
+
+    internal static HttpResponse CreateWebSocketResponse ()
+    {
+      var res = new HttpResponse (HttpStatusCode.SwitchingProtocols);
+
+      var headers = res.Headers;
+      headers["Upgrade"] = "websocket";
+      headers["Connection"] = "Upgrade";
+
+      return res;
+    }
+
+    internal static HttpResponse Parse (string[] headerParts)
+    {
+      var statusLine = headerParts[0].Split (new[] { ' ' }, 3);
+      if (statusLine.Length != 3)
+        throw new ArgumentException ("Invalid status line: " + headerParts[0]);
+
+      var headers = new WebHeaderCollection ();
+      for (int i = 1; i < headerParts.Length; i++)
+        headers.InternalSet (headerParts[i], true);
+
+      return new HttpResponse (
+        statusLine[1], statusLine[2], new Version (statusLine[0].Substring (5)), headers);
+    }
+
+    internal static HttpResponse Read (Stream stream, int millisecondsTimeout)
+    {
+      return Read<HttpResponse> (stream, Parse, millisecondsTimeout);
+    }
+
+    #endregion
+
+    #region Public Methods
+
+    public void SetCookies (CookieCollection cookies)
+    {
+      if (cookies == null || cookies.Count == 0)
+        return;
+
+      var headers = Headers;
+      foreach (var cookie in cookies.Sorted)
+        headers.Add ("Set-Cookie", cookie.ToResponseString ());
+    }
+
+    public override string ToString ()
+    {
+      var output = new StringBuilder (64);
+      output.AppendFormat ("HTTP/{0} {1} {2}{3}", ProtocolVersion, _code, _reason, CrLf);
+
+      var headers = Headers;
+      foreach (var key in headers.AllKeys)
+        output.AppendFormat ("{0}: {1}{2}", key, headers[key], CrLf);
+
+      output.Append (CrLf);
+
+      var entity = EntityBody;
+      if (entity.Length > 0)
+        output.Append (entity);
+
+      return output.ToString ();
+    }
+
+    #endregion
+  }
+}