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HttpRequest.cs
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198 lines (156 loc) · 5.66 KB
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/*
* Copyright (C) 2011 uhttpsharp project - http://github.com/raistlinthewiz/uhttpsharp
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
using System;
using System.Collections.Generic;
using System.Data.Odbc;
using System.IO;
using System.Runtime.Remoting.Messaging;
using System.Security.Cryptography.X509Certificates;
using System.Threading.Tasks;
namespace uhttpsharp
{
public class HttpRequestV2 : IHttpRequest
{
private readonly IHttpHeaders _headers;
private readonly HttpMethods _method;
private readonly string _protocol;
private readonly Uri _uri;
private readonly string[] _requestParameters;
public HttpRequestV2(IHttpHeaders headers, HttpMethods method, string protocol, Uri uri, string[] requestParameters)
{
_headers = headers;
_method = method;
_protocol = protocol;
_uri = uri;
_requestParameters = requestParameters;
}
public IHttpHeaders Headers
{
get { return _headers; }
}
public HttpMethods Method
{
get { return _method; }
}
public string Protocol
{
get { return _protocol; }
}
public Uri Uri
{
get { return _uri; }
}
public string[] RequestParameters
{
get { return _requestParameters; }
}
}
public interface IHttpRequest
{
IHttpHeaders Headers { get; }
HttpMethods Method { get; }
string Protocol { get; }
Uri Uri { get; }
string[] RequestParameters { get; }
}
public class HttpHeaders : IHttpHeaders
{
private readonly IDictionary<string, string> _values;
public HttpHeaders(IDictionary<string, string> values)
{
_values = values;
}
public string GetByName(string name)
{
return _values[name];
}
public bool TryGetByName(string name, out string value)
{
return _values.TryGetValue(name, out value);
}
}
public static class HttpHeadersExtensions
{
public static bool KeepAliveConnection(this IHttpHeaders headers)
{
string value;
return headers.TryGetByName("Connection", out value) && value.Equals("Keep-Alive", StringComparison.InvariantCultureIgnoreCase);
}
}
public interface IHttpHeaders
{
string GetByName(string name);
bool TryGetByName(string name, out string value);
}
public interface IHttpRequestProvider
{
/// <summary>
/// Provides an <see cref="IHttpRequest"/> based on the context of the stream,
/// May return null / throw exceptions on invalid requests.
/// </summary>
/// <param name="streamReader"></param>
/// <returns></returns>
Task<IHttpRequest> Provide(StreamReader streamReader);
}
public class HttpRequestProvider : IHttpRequestProvider
{
private static readonly char[] Separators = { '/' };
public async Task<IHttpRequest> Provide(StreamReader streamReader)
{
// parse the http request
var request = await streamReader.ReadLineAsync().ConfigureAwait(false);
if (request == null)
return null;
var tokens = request.Split(' ');
if (tokens.Length != 3)
{
return null;
}
var httpMethod = HttpMethodProvider.Default.Provide(tokens[0]);
var httpProtocol = tokens[2];
var uri = new Uri(tokens[1], UriKind.Relative);
var headers = new Dictionary<string, string>();
// get the headers
string line;
while ((line = await streamReader.ReadLineAsync().ConfigureAwait(false)) != null)
{
if (line.Equals(string.Empty)) break;
var headerKvp = SplitHeader(line);
headers.Add(headerKvp.Key, headerKvp.Value);
}
return new HttpRequestV2(new HttpHeaders(headers), httpMethod, httpProtocol, uri, uri.OriginalString.Split(Separators, StringSplitOptions.RemoveEmptyEntries));
}
private KeyValuePair<string, string> SplitHeader(string header)
{
var index = header.IndexOf(": ", StringComparison.InvariantCulture);
return new KeyValuePair<string, string>(header.Substring(0, index), header.Substring(index + 2).TrimStart(' '));
}
}
public sealed class HttpRequestParameters
{
private readonly string[] _params;
private static readonly char[] Separators = {'/'};
public HttpRequestParameters(Uri uri)
{
var url = uri.OriginalString;
_params = url.Split(Separators, StringSplitOptions.RemoveEmptyEntries);
}
public IList<string> Params
{
get { return _params; }
}
}
}