uhttpsharp/uhttpsharp/HttpResponse.cs at master · bonesoul/uhttpsharp · GitHub

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* 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.Globalization;

using System.IO;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using uhttpsharp.Headers;

namespace uhttpsharp

{

public interface IHttpResponse

{

Task WriteBody(StreamWriter writer);

/// <summary>

/// Gets the status line of this http response,

/// The first line that will be sent to the client.

/// </summary>

HttpResponseCode ResponseCode { get; }

IHttpHeaders Headers { get; }

bool CloseConnection { get; }

}

public abstract class HttpResponseBase : IHttpResponse

{

private readonly HttpResponseCode _code;

private readonly IHttpHeaders _headers;

protected HttpResponseBase(HttpResponseCode code, IHttpHeaders headers)

{

_code = code;

_headers = headers;

}

public abstract Task WriteBody(StreamWriter writer);

public HttpResponseCode ResponseCode

{

get { return _code; }

}

public IHttpHeaders Headers

{

get { return _headers; }

}

public bool CloseConnection

{

get

{

string value;

return !(_headers.TryGetByName("Connection", out value) &&

value.Equals("Keep-Alive", StringComparison.InvariantCultureIgnoreCase));

}

public sealed class StreamHttpResponse : HttpResponseBase

{

private readonly Stream _body;

public StreamHttpResponse(Stream body, HttpResponseCode code, IHttpHeaders headers) : base(code, headers)

{

_body = body;

}

public static IHttpResponse Create(Stream body, HttpResponseCode code = HttpResponseCode.Ok, string contentType = "text/html; charset=utf-8", bool keepAlive = true)

{

return new StreamHttpResponse(body, code, new ListHttpHeaders(new[]

{

new KeyValuePair<string, string>("Date", DateTime.UtcNow.ToString("R")),

new KeyValuePair<string, string>("content-type", contentType),

new KeyValuePair<string, string>("connection", keepAlive ? "keep-alive" : "close"),

new KeyValuePair<string, string>("content-length", body.Length.ToString(CultureInfo.InvariantCulture)),

}));

}

public async override Task WriteBody(StreamWriter writer)

{

await writer.FlushAsync().ConfigureAwait(false);

await _body.CopyToAsync(writer.BaseStream).ConfigureAwait(false);

await writer.BaseStream.FlushAsync().ConfigureAwait(false);

}

public sealed class EmptyHttpResponse : HttpResponseBase

{

public EmptyHttpResponse(HttpResponseCode code, IHttpHeaders headers) : base(code, headers)

{

}

public static IHttpResponse Create(HttpResponseCode code = HttpResponseCode.Ok, bool keepAlive = true)

{

return new EmptyHttpResponse(code, new ListHttpHeaders(new[]

{

new KeyValuePair<string, string>("Date", DateTime.UtcNow.ToString("R")),

new KeyValuePair<string, string>("content-type", "text/html"),

new KeyValuePair<string, string>("connection", keepAlive ? "keep-alive" : "close"),

new KeyValuePair<string, string>("content-length", "0"),

}));

}

public override Task WriteBody(StreamWriter writer)

{

return Task.Factory.GetCompleted();

}

public sealed class StringHttpResponse : HttpResponseBase

{

private readonly string _body;

public StringHttpResponse(string body, HttpResponseCode code, IHttpHeaders headers) : base(code, headers)

{

_body = body;

}

public static IHttpResponse Create(string body, HttpResponseCode code = HttpResponseCode.Ok, string contentType = "text/html; charset=utf-8", bool keepAlive = true)

{

return new StringHttpResponse(body, code, new ListHttpHeaders(new[]

{

new KeyValuePair<string, string>("Date", DateTime.UtcNow.ToString("R")),

new KeyValuePair<string, string>("content-type", contentType),

new KeyValuePair<string, string>("connection", keepAlive ? "keep-alive" : "close"),

new KeyValuePair<string, string>("content-length", Encoding.UTF8.GetByteCount(body).ToString(CultureInfo.InvariantCulture)),

}));

}

public async override Task WriteBody(StreamWriter writer)

{

await writer.WriteAsync(_body).ConfigureAwait(false);

}

public sealed class HttpResponse : IHttpResponse

{

private Stream ContentStream { get; set; }

private readonly Stream _headerStream = new MemoryStream();

private readonly bool _closeConnection;

private readonly IHttpHeaders _headers;

private readonly HttpResponseCode _responseCode;

public HttpResponse(HttpResponseCode code, string content, bool keepAliveConnection)

: this(code, "text/html; charset=utf-8", StringToStream(content), keepAliveConnection)

{

}

public HttpResponse(HttpResponseCode code, string content, IEnumerable<KeyValuePair<string,string>> headers, bool keepAliveConnection)

: this(code, "text/html; charset=utf-8", StringToStream(content), keepAliveConnection, headers)

{

}

public HttpResponse(string contentType, Stream contentStream, bool keepAliveConnection)

: this(HttpResponseCode.Ok, contentType, contentStream, keepAliveConnection)

{

}

public HttpResponse(HttpResponseCode code, string contentType, Stream contentStream, bool keepAliveConnection, IEnumerable<KeyValuePair<string, string>> headers)

{

ContentStream = contentStream;

_closeConnection = !keepAliveConnection;

_responseCode = code;

_headers = new ListHttpHeaders(new[]

{

new KeyValuePair<string, string>("Date", DateTime.UtcNow.ToString("R")),

new KeyValuePair<string, string>("Connection", _closeConnection ? "Close" : "Keep-Alive"),

new KeyValuePair<string, string>("Content-Type", contentType),

new KeyValuePair<string, string>("Content-Length", ContentStream.Length.ToString(CultureInfo.InvariantCulture)),

}.Concat(headers).ToList());

}

public HttpResponse(HttpResponseCode code, string contentType, Stream contentStream, bool keepAliveConnection) :

this(code, contentType, contentStream, keepAliveConnection, Enumerable.Empty<KeyValuePair<string, string>>())

{

}

public HttpResponse(HttpResponseCode code, byte[] contentStream, bool keepAliveConnection)

: this (code, "text/html; charset=utf-8", new MemoryStream(contentStream), keepAliveConnection)

{

}

public HttpResponse(HttpResponseCode code, string contentType, string content, bool closeConnection)

: this(code, contentType, StringToStream(content), closeConnection)

{

}

public static HttpResponse CreateWithMessage(HttpResponseCode code, string message, bool keepAliveConnection, string body = "")

{

return new HttpResponse(

code,

string.Format(

"<html><head><title>{0}</title></head><body><h1>{0}</h1><hr>{1}</body></html>",

message, body), keepAliveConnection);

}

private static MemoryStream StringToStream(string content)

{

var stream = new MemoryStream();

var writer = new StreamWriter(stream);

writer.Write(content);

writer.Flush();

return stream;

}

public async Task WriteBody(StreamWriter writer)

{

ContentStream.Position = 0;

await ContentStream.CopyToAsync(writer.BaseStream).ConfigureAwait(false);

}

public HttpResponseCode ResponseCode

{

get { return _responseCode; }

}

public IHttpHeaders Headers

{

get { return _headers; }

}

public bool CloseConnection

{

get { return _closeConnection; }

}

public async Task WriteHeaders(StreamWriter writer)

{

_headerStream.Position = 0;

await _headerStream.CopyToAsync(writer.BaseStream).ConfigureAwait(false);

}

uhttpsharp/uhttpsharp/HttpResponse.cs at master · bonesoul/uhttpsharp · GitHub

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