#region MIT License
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/**
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* ResponseHandshake.cs
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*
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* The MIT License
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*
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* Copyright (c) 2012 sta.blockhead
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#endregion
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using System;
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using System.Collections.Specialized;
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using System.Text;
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using WebSocketSharp.Net;
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namespace WebSocketSharp
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{
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public class ResponseHandshake : Handshake
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{
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#region Constructor
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public ResponseHandshake()
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: this(HttpStatusCode.SwitchingProtocols)
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{
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AddHeader("Upgrade", "websocket");
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AddHeader("Connection", "Upgrade");
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}
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public ResponseHandshake(HttpStatusCode code)
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{
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StatusCode = ((int)code).ToString();
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Reason = Ext.GetDescription(code);
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}
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#endregion
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#region Properties
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public bool IsWebSocketResponse
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{
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get
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{
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if (ProtocolVersion != HttpVersion.Version11)
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return false;
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if (StatusCode != "101")
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return false;
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if (!HeaderExists("Upgrade", "websocket"))
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return false;
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if (!HeaderExists("Connection", "Upgrade"))
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return false;
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if (!HeaderExists("Sec-WebSocket-Accept"))
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return false;
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return true;
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}
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}
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public string Reason { get; internal set; }
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public string StatusCode { get; internal set; }
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#endregion
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#region Methods
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public static ResponseHandshake CreateCloseResponse(HttpStatusCode code)
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{
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var res = new ResponseHandshake(code);
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res.AddHeader("Connection", "close");
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return res;
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}
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public static ResponseHandshake Parse(string[] response)
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{
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var statusLine = response[0].Split(' ');
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if (statusLine.Length < 3)
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throw new ArgumentException("Invalid status line.");
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var reason = new StringBuilder(statusLine[2]);
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for (int i = 3; i < statusLine.Length; i++)
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reason.AppendFormat(" {0}", statusLine[i]);
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var headers = new WebHeaderCollection();
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for (int i = 1; i < response.Length; i++)
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headers.Add(response[i]);
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return new ResponseHandshake
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{
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Headers = headers,
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Reason = reason.ToString(),
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StatusCode = statusLine[1],
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ProtocolVersion = new Version(statusLine[0].Substring(5))
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};
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}
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public override string ToString()
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{
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var buffer = new StringBuilder();
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buffer.AppendFormat("HTTP/{0} {1} {2}{3}", ProtocolVersion, StatusCode, Reason, _crlf);
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foreach (string key in Headers.AllKeys)
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buffer.AppendFormat("{0}: {1}{2}", key, Headers[key], _crlf);
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buffer.Append(_crlf);
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return buffer.ToString();
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}
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#endregion
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}
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}
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