#region MIT License
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/**
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* RequestHandshake.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 RequestHandshake : Handshake
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{
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#region Private Field
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private NameValueCollection _queryString;
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#endregion
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#region Private Constructor
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private RequestHandshake()
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{
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}
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#endregion
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#region Public Constructor
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public RequestHandshake(string uriString)
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{
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HttpMethod = "GET";
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RequestUri = Ext.ToUri(uriString);
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AddHeader("Upgrade", "websocket");
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AddHeader("Connection", "Upgrade");
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}
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#endregion
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#region Properties
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public string HttpMethod { get; private set; }
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public bool IsWebSocketRequest
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{
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get
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{
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if (HttpMethod != "GET")
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return false;
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if (ProtocolVersion != HttpVersion.Version11)
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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("Host"))
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return false;
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if (!HeaderExists("Sec-WebSocket-Key"))
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return false;
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if (!HeaderExists("Sec-WebSocket-Version"))
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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 NameValueCollection QueryString
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{
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get
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{
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if (_queryString == null)
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{
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_queryString = new NameValueCollection();
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var i = RawUrl.IndexOf('?');
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if (i > 0)
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{
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var query = RawUrl.Substring(i + 1);
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var components = query.Split('&');
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foreach (var c in components)
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{
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var nv = Ext.GetNameAndValue(c, "=");
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if (nv.Key != null)
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{
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var name = Ext.UrlDecode(nv.Key);
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var val = Ext.UrlDecode(nv.Value);
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_queryString.Add(name, val);
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}
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}
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}
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}
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return _queryString;
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}
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}
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public string RawUrl
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{
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get
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{
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if (RequestUri.IsAbsoluteUri)
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return RequestUri.PathAndQuery;
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return RequestUri.OriginalString;
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}
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}
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public Uri RequestUri { get; private set; }
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#endregion
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#region Public Static Methods
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public static RequestHandshake Parse(WebSocketContext context)
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{
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return new RequestHandshake
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{
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Headers = context.Headers,
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HttpMethod = "GET",
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RequestUri = context.RequestUri,
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ProtocolVersion = HttpVersion.Version11
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};
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}
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public static RequestHandshake Parse(string[] request)
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{
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var requestLine = request[0].Split(' ');
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if (requestLine.Length != 3)
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{
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var msg = "Invalid HTTP Request-Line: " + request[0];
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throw new ArgumentException(msg, "request");
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}
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var headers = new WebHeaderCollection();
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for (int i = 1; i < request.Length; i++)
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headers.Add(request[i]);
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return new RequestHandshake
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{
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Headers = headers,
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HttpMethod = requestLine[0],
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RequestUri = Ext.ToUri(requestLine[1]),
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ProtocolVersion = new Version(requestLine[2].Substring(5))
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};
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}
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#endregion
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#region Public Method
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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("{0} {1} HTTP/{2}{3}", HttpMethod, RawUrl, ProtocolVersion, _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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