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Remove SocketHttpListener

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This commit is contained in:
Claus Vium 2019-02-27 07:32:36 +01:00
parent 848cfc32cc
commit 77addb2283
25 changed files with 188 additions and 3395 deletions
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2
Emby.Server.Implementations/Emby.Server.Implementations.csproj
View file

@ -9,7 +9,6 @@
<ProjectReference Include="..\MediaBrowser.Providers\MediaBrowser.Providers.csproj" />
<ProjectReference Include="..\MediaBrowser.WebDashboard\MediaBrowser.WebDashboard.csproj" />
<ProjectReference Include="..\MediaBrowser.XbmcMetadata\MediaBrowser.XbmcMetadata.csproj" />
<ProjectReference Include="..\SocketHttpListener\SocketHttpListener.csproj" />
<ProjectReference Include="..\Emby.Dlna\Emby.Dlna.csproj" />
<ProjectReference Include="..\Mono.Nat\Mono.Nat.csproj" />
<ProjectReference Include="..\MediaBrowser.Api\MediaBrowser.Api.csproj" />
@ -40,7 +39,6 @@
<PackageReference Include="ServiceStack.Text.Core" Version="5.4.0" />
<PackageReference Include="sharpcompress" Version="0.22.0" />
<PackageReference Include="SQLitePCL.pretty.netstandard" Version="1.0.0" />
<PackageReference Include="System.Buffers" Version="4.5.0" />
<PackageReference Include="UTF.Unknown" Version="1.0.0-beta1" />
</ItemGroup>

3
Emby.Server.Implementations/SocketSharp/SharpWebSocket.cs
View file

@ -23,9 +23,8 @@ namespace Emby.Server.Implementations.SocketSharp
/// <value>The web socket.</value>
private readonly WebSocket _webSocket;
private TaskCompletionSource<bool> _taskCompletionSource = new TaskCompletionSource<bool>();
private readonly CancellationTokenSource _cancellationTokenSource = new CancellationTokenSource();
private bool _disposed = false;
private bool _disposed;
public SharpWebSocket(WebSocket socket, ILogger logger)
{

1
Emby.Server.Implementations/SocketSharp/WebSocketSharpRequest.cs
View file

@ -11,7 +11,6 @@ using Microsoft.AspNetCore.Http.Extensions;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Primitives;
using Microsoft.Net.Http.Headers;
using SocketHttpListener.Net;
using IHttpFile = MediaBrowser.Model.Services.IHttpFile;
using IHttpRequest = MediaBrowser.Model.Services.IHttpRequest;
using IHttpResponse = MediaBrowser.Model.Services.IHttpResponse;

379
MediaBrowser.sln
View file

@ -1,192 +1,187 @@
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17
SocketHttpListener/ByteOrder.cs
View file

@ -1,17 +0,0 @@
namespace SocketHttpListener
{
/// <summary>
/// Contains the values that indicate whether the byte order is a Little-endian or Big-endian.
/// </summary>
public enum ByteOrder : byte
{
/// <summary>
/// Indicates a Little-endian.
/// </summary>
Little,
/// <summary>
/// Indicates a Big-endian.
/// </summary>
Big
}
}

79
SocketHttpListener/CloseEventArgs.cs
View file

@ -1,79 +0,0 @@
using System;
using System.Text;
namespace SocketHttpListener
{
/// <summary>
/// Contains the event data associated with a <see cref="WebSocket.OnClose"/> event.
/// </summary>
/// <remarks>
/// A <see cref="WebSocket.OnClose"/> event occurs when the WebSocket connection has been closed.
/// If you would like to get the reason for the close, you should access the <see cref="Code"/> or
/// <see cref="Reason"/> property.
/// </remarks>
public class CloseEventArgs : EventArgs
{
#region Private Fields
private bool _clean;
private ushort _code;
private string _reason;
#endregion
#region Internal Constructors
internal CloseEventArgs(PayloadData payload)
{
var data = payload.ApplicationData;
var len = data.Length;
_code = len > 1
? data.SubArray(0, 2).ToUInt16(ByteOrder.Big)
: (ushort)CloseStatusCode.NoStatusCode;
_reason = len > 2
? GetUtf8String(data.SubArray(2, len - 2))
: string.Empty;
}
private static string GetUtf8String(byte[] bytes)
{
return Encoding.UTF8.GetString(bytes, 0, bytes.Length);
}
#endregion
#region Public Properties
/// <summary>
/// Gets the status code for the close.
/// </summary>
/// <value>
/// A <see cref="ushort"/> that represents the status code for the close if any.
/// </value>
public ushort Code => _code;
/// <summary>
/// Gets the reason for the close.
/// </summary>
/// <value>
/// A <see cref="string"/> that represents the reason for the close if any.
/// </value>
public string Reason => _reason;
/// <summary>
/// Gets a value indicating whether the WebSocket connection has been closed cleanly.
/// </summary>
/// <value>
/// <c>true</c> if the WebSocket connection has been closed cleanly; otherwise, <c>false</c>.
/// </value>
public bool WasClean
{
get => _clean;
internal set => _clean = value;
}
#endregion
}
}

94
SocketHttpListener/CloseStatusCode.cs
View file

@ -1,94 +0,0 @@
namespace SocketHttpListener
{
/// <summary>
/// Contains the values of the status code for the WebSocket connection close.
/// </summary>
/// <remarks>
/// <para>
/// The values of the status code are defined in
/// <see href="http://tools.ietf.org/html/rfc6455#section-7.4">Section 7.4</see>
/// of RFC 6455.
/// </para>
/// <para>
/// "Reserved value" must not be set as a status code in a close control frame
/// by an endpoint. It's designated for use in applications expecting a status
/// code to indicate that the connection was closed due to the system grounds.
/// </para>
/// </remarks>
public enum CloseStatusCode : ushort
{
/// <summary>
/// Equivalent to close status 1000.
/// Indicates a normal close.
/// </summary>
Normal = 1000,
/// <summary>
/// Equivalent to close status 1001.
/// Indicates that an endpoint is going away.
/// </summary>
Away = 1001,
/// <summary>
/// Equivalent to close status 1002.
/// Indicates that an endpoint is terminating the connection due to a protocol error.
/// </summary>
ProtocolError = 1002,
/// <summary>
/// Equivalent to close status 1003.
/// Indicates that an endpoint is terminating the connection because it has received
/// an unacceptable type message.
/// </summary>
IncorrectData = 1003,
/// <summary>
/// Equivalent to close status 1004.
/// Still undefined. Reserved value.
/// </summary>
Undefined = 1004,
/// <summary>
/// Equivalent to close status 1005.
/// Indicates that no status code was actually present. Reserved value.
/// </summary>
NoStatusCode = 1005,
/// <summary>
/// Equivalent to close status 1006.
/// Indicates that the connection was closed abnormally. Reserved value.
/// </summary>
Abnormal = 1006,
/// <summary>
/// Equivalent to close status 1007.
/// Indicates that an endpoint is terminating the connection because it has received
/// a message that contains a data that isn't consistent with the type of the message.
/// </summary>
InconsistentData = 1007,
/// <summary>
/// Equivalent to close status 1008.
/// Indicates that an endpoint is terminating the connection because it has received
/// a message that violates its policy.
/// </summary>
PolicyViolation = 1008,
/// <summary>
/// Equivalent to close status 1009.
/// Indicates that an endpoint is terminating the connection because it has received
/// a message that is too big to process.
/// </summary>
TooBig = 1009,
/// <summary>
/// Equivalent to close status 1010.
/// Indicates that the client is terminating the connection because it has expected
/// the server to negotiate one or more extension, but the server didn't return them
/// in the handshake response.
/// </summary>
IgnoreExtension = 1010,
/// <summary>
/// Equivalent to close status 1011.
/// Indicates that the server is terminating the connection because it has encountered
/// an unexpected condition that prevented it from fulfilling the request.
/// </summary>
ServerError = 1011,
/// <summary>
/// Equivalent to close status 1015.
/// Indicates that the connection was closed due to a failure to perform a TLS handshake.
/// Reserved value.
/// </summary>
TlsHandshakeFailure = 1015
}
}

23
SocketHttpListener/CompressionMethod.cs
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@ -1,23 +0,0 @@
namespace SocketHttpListener
{
/// <summary>
/// Contains the values of the compression method used to compress the message on the WebSocket
/// connection.
/// </summary>
/// <remarks>
/// The values of the compression method are defined in
/// <see href="http://tools.ietf.org/html/draft-ietf-hybi-permessage-compression-09">Compression
/// Extensions for WebSocket</see>.
/// </remarks>
public enum CompressionMethod : byte
{
/// <summary>
/// Indicates non compression.
/// </summary>
None,
/// <summary>
/// Indicates using DEFLATE.
/// </summary>
Deflate
}
}

42
SocketHttpListener/ErrorEventArgs.cs
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@ -1,42 +0,0 @@
using System;
namespace SocketHttpListener
{
/// <summary>
/// Contains the event data associated with a <see cref="WebSocket.OnError"/> event.
/// </summary>
/// <remarks>
/// A <see cref="WebSocket.OnError"/> event occurs when the <see cref="WebSocket"/> gets an error.
/// If you would like to get the error message, you should access the <see cref="Message"/>
/// property.
/// </remarks>
public class ErrorEventArgs : EventArgs
{
#region Private Fields
private string _message;
#endregion
#region Internal Constructors
internal ErrorEventArgs(string message)
{
_message = message;
}
#endregion
#region Public Properties
/// <summary>
/// Gets the error message.
/// </summary>
/// <value>
/// A <see cref="string"/> that represents the error message.
/// </value>
public string Message => _message;
#endregion
}
}

946
SocketHttpListener/Ext.cs
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@ -1,946 +0,0 @@
using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using MediaBrowser.Model.Services;
using WebSocketState = System.Net.WebSockets.WebSocketState;
namespace SocketHttpListener
{
/// <summary>
/// Provides a set of static methods for the websocket-sharp.
/// </summary>
public static class Ext
{
#region Private Const Fields
private const string _tspecials = "()<>@,;:\\\"/[]?={} \t";
#endregion
#region Private Methods
private static MemoryStream compress(this Stream stream)
{
var output = new MemoryStream();
if (stream.Length == 0)
return output;
stream.Position = 0;
using (var ds = new DeflateStream(output, CompressionMode.Compress, true))
{
stream.CopyTo(ds);
//ds.Close(); // "BFINAL" set to 1.
output.Position = 0;
return output;
}
}
private static byte[] decompress(this byte[] value)
{
if (value.Length == 0)
return value;
using (var input = new MemoryStream(value))
{
return input.decompressToArray();
}
}
private static MemoryStream decompress(this Stream stream)
{
var output = new MemoryStream();
if (stream.Length == 0)
return output;
stream.Position = 0;
using (var ds = new DeflateStream(stream, CompressionMode.Decompress, true))
{
ds.CopyTo(output, true);
return output;
}
}
private static byte[] decompressToArray(this Stream stream)
{
using (var decomp = stream.decompress())
{
return decomp.ToArray();
}
}
private static async Task<byte[]> ReadBytesAsync(this Stream stream, byte[] buffer, int offset, int length)
{
var len = await stream.ReadAsync(buffer, offset, length).ConfigureAwait(false);
if (len < 1)
return buffer.SubArray(0, offset);
var tmp = 0;
while (len < length)
{
tmp = await stream.ReadAsync(buffer, offset + len, length - len).ConfigureAwait(false);
if (tmp < 1)
{
break;
}
len += tmp;
}
return len < length
? buffer.SubArray(0, offset + len)
: buffer;
}
private static async Task<bool> ReadBytesAsync(this Stream stream, byte[] buffer, int offset, int length, Stream dest)
{
var bytes = await stream.ReadBytesAsync(buffer, offset, length).ConfigureAwait(false);
var len = bytes.Length;
dest.Write(bytes, 0, len);
return len == offset + length;
}
#endregion
#region Internal Methods
internal static async Task<byte[]> AppendAsync(this ushort code, string reason)
{
using (var buffer = new MemoryStream())
{
var tmp = code.ToByteArrayInternally(ByteOrder.Big);
await buffer.WriteAsync(tmp, 0, 2).ConfigureAwait(false);
if (reason != null && reason.Length > 0)
{
tmp = Encoding.UTF8.GetBytes(reason);
await buffer.WriteAsync(tmp, 0, tmp.Length).ConfigureAwait(false);
}
return buffer.ToArray();
}
}
internal static string CheckIfClosable(this WebSocketState state)
{
return state == WebSocketState.CloseSent
? "While closing the WebSocket connection."
: state == WebSocketState.Closed
? "The WebSocket connection has already been closed."
: null;
}
internal static string CheckIfOpen(this WebSocketState state)
{
return state == WebSocketState.Connecting
? "A WebSocket connection isn't established."
: state == WebSocketState.CloseSent
? "While closing the WebSocket connection."
: state == WebSocketState.Closed
? "The WebSocket connection has already been closed."
: null;
}
internal static string CheckIfValidControlData(this byte[] data, string paramName)
{
return data.Length > 125
? string.Format("'{0}' length must be less.", paramName)
: null;
}
internal static Stream Compress(this Stream stream, CompressionMethod method)
{
return method == CompressionMethod.Deflate
? stream.compress()
: stream;
}
internal static bool Contains<T>(this IEnumerable<T> source, Func<T, bool> condition)
{
foreach (T elm in source)
if (condition(elm))
return true;
return false;
}
internal static void CopyTo(this Stream src, Stream dest, bool setDefaultPosition)
{
var readLen = 0;
var bufferLen = 256;
var buffer = new byte[bufferLen];
while ((readLen = src.Read(buffer, 0, bufferLen)) > 0)
{
dest.Write(buffer, 0, readLen);
}
if (setDefaultPosition)
dest.Position = 0;
}
internal static byte[] Decompress(this byte[] value, CompressionMethod method)
{
return method == CompressionMethod.Deflate
? value.decompress()
: value;
}
internal static byte[] DecompressToArray(this Stream stream, CompressionMethod method)
{
return method == CompressionMethod.Deflate
? stream.decompressToArray()
: stream.ToByteArray();
}
/// <summary>
/// Determines whether the specified <see cref="int"/> equals the specified <see cref="char"/>,
/// and invokes the specified Action&lt;int&gt; delegate at the same time.
/// </summary>
/// <returns>
/// <c>true</c> if <paramref name="value"/> equals <paramref name="c"/>;
/// otherwise, <c>false</c>.
/// </returns>
/// <param name="value">
/// An <see cref="int"/> to compare.
/// </param>
/// <param name="c">
/// A <see cref="char"/> to compare.
/// </param>
/// <param name="action">
/// An Action&lt;int&gt; delegate that references the method(s) called at
/// the same time as comparing. An <see cref="int"/> parameter to pass to
/// the method(s) is <paramref name="value"/>.
/// </param>
/// <exception cref="ArgumentOutOfRangeException">
/// <paramref name="value"/> isn't between 0 and 255.
/// </exception>
internal static bool EqualsWith(this int value, char c, Action<int> action)
{
if (value < 0 || value > 255)
throw new ArgumentOutOfRangeException(nameof(value));
action(value);
return value == c - 0;
}
internal static string GetMessage(this CloseStatusCode code)
{
return code == CloseStatusCode.ProtocolError
? "A WebSocket protocol error has occurred."
: code == CloseStatusCode.IncorrectData
? "An incorrect data has been received."
: code == CloseStatusCode.Abnormal
? "An exception has occurred."
: code == CloseStatusCode.InconsistentData
? "An inconsistent data has been received."
: code == CloseStatusCode.PolicyViolation
? "A policy violation has occurred."
: code == CloseStatusCode.TooBig
? "A too big data has been received."
: code == CloseStatusCode.IgnoreExtension
? "WebSocket client did not receive expected extension(s)."
: code == CloseStatusCode.ServerError
? "WebSocket server got an internal error."
: code == CloseStatusCode.TlsHandshakeFailure
? "An error has occurred while handshaking."
: string.Empty;
}
internal static string GetNameInternal(this string nameAndValue, string separator)
{
var i = nameAndValue.IndexOf(separator);
return i > 0
? nameAndValue.Substring(0, i).Trim()
: null;
}
internal static string GetValueInternal(this string nameAndValue, string separator)
{
var i = nameAndValue.IndexOf(separator);
return i >= 0 && i < nameAndValue.Length - 1
? nameAndValue.Substring(i + 1).Trim()
: null;
}
internal static bool IsCompressionExtension(this string value, CompressionMethod method)
{
return value.StartsWith(method.ToExtensionString());
}
internal static bool IsPortNumber(this int value)
{
return value > 0 && value < 65536;
}
internal static bool IsReserved(this ushort code)
{
return code == (ushort)CloseStatusCode.Undefined ||
code == (ushort)CloseStatusCode.NoStatusCode ||
code == (ushort)CloseStatusCode.Abnormal ||
code == (ushort)CloseStatusCode.TlsHandshakeFailure;
}
internal static bool IsReserved(this CloseStatusCode code)
{
return code == CloseStatusCode.Undefined ||
code == CloseStatusCode.NoStatusCode ||
code == CloseStatusCode.Abnormal ||
code == CloseStatusCode.TlsHandshakeFailure;
}
internal static bool IsText(this string value)
{
var len = value.Length;
for (var i = 0; i < len; i++)
{
char c = value[i];
if (c < 0x20 && !"\r\n\t".Contains(c))
return false;
if (c == 0x7f)
return false;
if (c == '\n' && ++i < len)
{
c = value[i];
if (!" \t".Contains(c))
return false;
}
}
return true;
}
internal static bool IsToken(this string value)
{
foreach (char c in value)
if (c < 0x20 || c >= 0x7f || _tspecials.Contains(c))
return false;
return true;
}
internal static string Quote(this string value)
{
return value.IsToken()
? value
: string.Format("\"{0}\"", value.Replace("\"", "\\\""));
}
internal static Task<byte[]> ReadBytesAsync(this Stream stream, int length)
=> stream.ReadBytesAsync(new byte[length], 0, length);
internal static async Task<byte[]> ReadBytesAsync(this Stream stream, long length, int bufferLength)
{
using (var result = new MemoryStream())
{
var count = length / bufferLength;
var rem = (int)(length % bufferLength);
var buffer = new byte[bufferLength];
var end = false;
for (long i = 0; i < count; i++)
{
if (!await stream.ReadBytesAsync(buffer, 0, bufferLength, result).ConfigureAwait(false))
{
end = true;
break;
}
}
if (!end && rem > 0)
{
await stream.ReadBytesAsync(new byte[rem], 0, rem, result).ConfigureAwait(false);
}
return result.ToArray();
}
}
internal static string RemovePrefix(this string value, params string[] prefixes)
{
var i = 0;
foreach (var prefix in prefixes)
{
if (value.StartsWith(prefix))
{
i = prefix.Length;
break;
}
}
return i > 0
? value.Substring(i)
: value;
}
internal static T[] Reverse<T>(this T[] array)
{
var len = array.Length;
T[] reverse = new T[len];
var end = len - 1;
for (var i = 0; i <= end; i++)
reverse[i] = array[end - i];
return reverse;
}
internal static IEnumerable<string> SplitHeaderValue(
this string value, params char[] separator)
{
var len = value.Length;
var separators = new string(separator);
var buffer = new StringBuilder(32);
var quoted = false;
var escaped = false;
char c;
for (var i = 0; i < len; i++)
{
c = value[i];
if (c == '"')
{
if (escaped)
escaped = !escaped;
else
quoted = !quoted;
}
else if (c == '\\')
{
if (i < len - 1 && value[i + 1] == '"')
escaped = true;
}
else if (separators.Contains(c))
{
if (!quoted)
{
yield return buffer.ToString();
buffer.Length = 0;
continue;
}
}
else
{
}
buffer.Append(c);
}
if (buffer.Length > 0)
yield return buffer.ToString();
}
internal static byte[] ToByteArray(this Stream stream)
{
using (var output = new MemoryStream())
{
stream.Position = 0;
stream.CopyTo(output);
return output.ToArray();
}
}
internal static byte[] ToByteArrayInternally(this ushort value, ByteOrder order)
{
var bytes = BitConverter.GetBytes(value);
if (!order.IsHostOrder())
Array.Reverse(bytes);
return bytes;
}
internal static byte[] ToByteArrayInternally(this ulong value, ByteOrder order)
{
var bytes = BitConverter.GetBytes(value);
if (!order.IsHostOrder())
Array.Reverse(bytes);
return bytes;
}
internal static string ToExtensionString(
this CompressionMethod method, params string[] parameters)
{
if (method == CompressionMethod.None)
return string.Empty;
var m = string.Format("permessage-{0}", method.ToString().ToLowerInvariant());
if (parameters == null || parameters.Length == 0)
return m;
return string.Format("{0}; {1}", m, parameters.ToString("; "));
}
internal static ushort ToUInt16(this byte[] src, ByteOrder srcOrder)
{
src.ToHostOrder(srcOrder);
return BitConverter.ToUInt16(src, 0);
}
internal static ulong ToUInt64(this byte[] src, ByteOrder srcOrder)
{
src.ToHostOrder(srcOrder);
return BitConverter.ToUInt64(src, 0);
}
internal static string TrimEndSlash(this string value)
{
value = value.TrimEnd('/');
return value.Length > 0
? value
: "/";
}
internal static string Unquote(this string value)
{
var start = value.IndexOf('\"');
var end = value.LastIndexOf('\"');
if (start < end)
value = value.Substring(start + 1, end - start - 1).Replace("\\\"", "\"");
return value.Trim();
}
internal static void WriteBytes(this Stream stream, byte[] value)
{
using (var src = new MemoryStream(value))
{
src.CopyTo(stream);
}
}
#endregion
#region Public Methods
/// <summary>
/// Determines whether the specified <see cref="string"/> contains any of characters
/// in the specified array of <see cref="char"/>.
/// </summary>
/// <returns>
/// <c>true</c> if <paramref name="value"/> contains any of <paramref name="chars"/>;
/// otherwise, <c>false</c>.
/// </returns>
/// <param name="value">
/// A <see cref="string"/> to test.
/// </param>
/// <param name="chars">
/// An array of <see cref="char"/> that contains characters to find.
/// </param>
public static bool Contains(this string value, params char[] chars)
{
return chars == null || chars.Length == 0
? true
: value == null || value.Length == 0
? false
: value.IndexOfAny(chars) != -1;
}
/// <summary>
/// Determines whether the specified <see cref="QueryParamCollection"/> contains the entry
/// with the specified <paramref name="name"/>.
/// </summary>
/// <returns>
/// <c>true</c> if <paramref name="collection"/> contains the entry
/// with <paramref name="name"/>; otherwise, <c>false</c>.
/// </returns>
/// <param name="collection">
/// A <see cref="QueryParamCollection"/> to test.
/// </param>
/// <param name="name">
/// A <see cref="string"/> that represents the key of the entry to find.
/// </param>
public static bool Contains(this QueryParamCollection collection, string name)
{
return collection == null || collection.Count == 0
? false
: collection[name] != null;
}
/// <summary>
/// Determines whether the specified <see cref="QueryParamCollection"/> contains the entry
/// with the specified both <paramref name="name"/> and <paramref name="value"/>.
/// </summary>
/// <returns>
/// <c>true</c> if <paramref name="collection"/> contains the entry
/// with both <paramref name="name"/> and <paramref name="value"/>;
/// otherwise, <c>false</c>.
/// </returns>
/// <param name="collection">
/// A <see cref="QueryParamCollection"/> to test.
/// </param>
/// <param name="name">
/// A <see cref="string"/> that represents the key of the entry to find.
/// </param>
/// <param name="value">
/// A <see cref="string"/> that represents the value of the entry to find.
/// </param>
public static bool Contains(this QueryParamCollection collection, string name, string value)
{
if (collection == null || collection.Count == 0)
return false;
var values = collection[name];
if (values == null)
return false;
foreach (var v in values.Split(','))
if (v.Trim().Equals(value, StringComparison.OrdinalIgnoreCase))
return true;
return false;
}
/// <summary>
/// Emits the specified <c>EventHandler&lt;TEventArgs&gt;</c> delegate
/// if it isn't <see langword="null"/>.
/// </summary>
/// <param name="eventHandler">
/// An <c>EventHandler&lt;TEventArgs&gt;</c> to emit.
/// </param>
/// <param name="sender">
/// An <see cref="object"/> from which emits this <paramref name="eventHandler"/>.
/// </param>
/// <param name="e">
/// A <c>TEventArgs</c> that represents the event data.
/// </param>
/// <typeparam name="TEventArgs">
/// The type of the event data generated by the event.
/// </typeparam>
public static void Emit<TEventArgs>(
this EventHandler<TEventArgs> eventHandler, object sender, TEventArgs e)
where TEventArgs : EventArgs
{
if (eventHandler != null)
eventHandler(sender, e);
}
/// <summary>
/// Gets the description of the specified HTTP status <paramref name="code"/>.
/// </summary>
/// <returns>
/// A <see cref="string"/> that represents the description of the HTTP status code.
/// </returns>
/// <param name="code">
/// One of <see cref="HttpStatusCode"/> enum values, indicates the HTTP status codes.
/// </param>
public static string GetDescription(this HttpStatusCode code)
{
return ((int)code).GetStatusDescription();
}
/// <summary>
/// Gets the description of the specified HTTP status <paramref name="code"/>.
/// </summary>
/// <returns>
/// A <see cref="string"/> that represents the description of the HTTP status code.
/// </returns>
/// <param name="code">
/// An <see cref="int"/> that represents the HTTP status code.
/// </param>
public static string GetStatusDescription(this int code)
{
switch (code)
{
case 100: return "Continue";
case 101: return "Switching Protocols";
case 102: return "Processing";
case 200: return "OK";
case 201: return "Created";
case 202: return "Accepted";
case 203: return "Non-Authoritative Information";
case 204: return "No Content";
case 205: return "Reset Content";
case 206: return "Partial Content";
case 207: return "Multi-Status";
case 300: return "Multiple Choices";
case 301: return "Moved Permanently";
case 302: return "Found";
case 303: return "See Other";
case 304: return "Not Modified";
case 305: return "Use Proxy";
case 307: return "Temporary Redirect";
case 400: return "Bad Request";
case 401: return "Unauthorized";
case 402: return "Payment Required";
case 403: return "Forbidden";
case 404: return "Not Found";
case 405: return "Method Not Allowed";
case 406: return "Not Acceptable";
case 407: return "Proxy Authentication Required";
case 408: return "Request Timeout";
case 409: return "Conflict";
case 410: return "Gone";
case 411: return "Length Required";
case 412: return "Precondition Failed";
case 413: return "Request Entity Too Large";
case 414: return "Request-Uri Too Long";
case 415: return "Unsupported Media Type";
case 416: return "Requested Range Not Satisfiable";
case 417: return "Expectation Failed";
case 422: return "Unprocessable Entity";
case 423: return "Locked";
case 424: return "Failed Dependency";
case 500: return "Internal Server Error";
case 501: return "Not Implemented";
case 502: return "Bad Gateway";
case 503: return "Service Unavailable";
case 504: return "Gateway Timeout";
case 505: return "Http Version Not Supported";
case 507: return "Insufficient Storage";
}
return string.Empty;
}
/// <summary>
/// Determines whether the specified <see cref="ByteOrder"/> is host
/// (this computer architecture) byte order.
/// </summary>
/// <returns>
/// <c>true</c> if <paramref name="order"/> is host byte order;
/// otherwise, <c>false</c>.
/// </returns>
/// <param name="order">
/// One of the <see cref="ByteOrder"/> enum values, to test.
/// </param>
public static bool IsHostOrder(this ByteOrder order)
{
// true : !(true ^ true) or !(false ^ false)
// false: !(true ^ false) or !(false ^ true)
return !(BitConverter.IsLittleEndian ^ (order == ByteOrder.Little));
}
/// <summary>
/// Determines whether the specified <see cref="string"/> is a predefined scheme.
/// </summary>
/// <returns>
/// <c>true</c> if <paramref name="value"/> is a predefined scheme; otherwise, <c>false</c>.
/// </returns>
/// <param name="value">
/// A <see cref="string"/> to test.
/// </param>
public static bool IsPredefinedScheme(this string value)
{
if (value == null || value.Length < 2)
return false;
var c = value[0];
if (c == 'h')
return value == "http" || value == "https";
if (c == 'w')
return value == "ws" || value == "wss";
if (c == 'f')
return value == "file" || value == "ftp";
if (c == 'n')
{
c = value[1];
return c == 'e'
? value == "news" || value == "net.pipe" || value == "net.tcp"
: value == "nntp";
}
return (c == 'g' && value == "gopher") || (c == 'm' && value == "mailto");
}
/// <summary>
/// Determines whether the specified <see cref="string"/> is a URI string.
/// </summary>
/// <returns>
/// <c>true</c> if <paramref name="value"/> may be a URI string; otherwise, <c>false</c>.
/// </returns>
/// <param name="value">
/// A <see cref="string"/> to test.
/// </param>
public static bool MaybeUri(this string value)
{
if (value == null || value.Length == 0)
return false;
var i = value.IndexOf(':');
if (i == -1)
return false;
if (i >= 10)
return false;
return value.Substring(0, i).IsPredefinedScheme();
}
/// <summary>
/// Retrieves a sub-array from the specified <paramref name="array"/>.
/// A sub-array starts at the specified element position.
/// </summary>
/// <returns>
/// An array of T that receives a sub-array, or an empty array of T if any problems
/// with the parameters.
/// </returns>
/// <param name="array">
/// An array of T that contains the data to retrieve a sub-array.
/// </param>
/// <param name="startIndex">
/// An <see cref="int"/> that contains the zero-based starting position of a sub-array
/// in <paramref name="array"/>.
/// </param>
/// <param name="length">
/// An <see cref="int"/> that contains the number of elements to retrieve a sub-array.
/// </param>
/// <typeparam name="T">
/// The type of elements in the <paramref name="array"/>.
/// </typeparam>
public static T[] SubArray<T>(this T[] array, int startIndex, int length)
{
if (array == null || array.Length == 0)
return new T[0];
if (startIndex < 0 || length <= 0)
return new T[0];
if (startIndex + length > array.Length)
return new T[0];
if (startIndex == 0 && array.Length == length)
return array;
T[] subArray = new T[length];
Array.Copy(array, startIndex, subArray, 0, length);
return subArray;
}
/// <summary>
/// Converts the order of the specified array of <see cref="byte"/> to the host byte order.
/// </summary>
/// <returns>
/// An array of <see cref="byte"/> converted from <paramref name="src"/>.
/// </returns>
/// <param name="src">
/// An array of <see cref="byte"/> to convert.
/// </param>
/// <param name="srcOrder">
/// One of the <see cref="ByteOrder"/> enum values, indicates the byte order of
/// <paramref name="src"/>.
/// </param>
/// <exception cref="ArgumentNullException">
/// <paramref name="src"/> is <see langword="null"/>.
/// </exception>
public static void ToHostOrder(this byte[] src, ByteOrder srcOrder)
{
if (src == null)
{
throw new ArgumentNullException(nameof(src));
}
if (src.Length > 1 && !srcOrder.IsHostOrder())
{
Array.Reverse(src);
}
}
/// <summary>
/// Converts the specified <paramref name="array"/> to a <see cref="string"/> that
/// concatenates the each element of <paramref name="array"/> across the specified
/// <paramref name="separator"/>.
/// </summary>
/// <returns>
/// A <see cref="string"/> converted from <paramref name="array"/>,
/// or <see cref="String.Empty"/> if <paramref name="array"/> is empty.
/// </returns>
/// <param name="array">
/// An array of T to convert.
/// </param>
/// <param name="separator">
/// A <see cref="string"/> that represents the separator string.
/// </param>
/// <typeparam name="T">
/// The type of elements in <paramref name="array"/>.
/// </typeparam>
/// <exception cref="ArgumentNullException">
/// <paramref name="array"/> is <see langword="null"/>.
/// </exception>
public static string ToString<T>(this T[] array, string separator)
{
if (array == null)
throw new ArgumentNullException(nameof(array));
var len = array.Length;
if (len == 0)
return string.Empty;
if (separator == null)
separator = string.Empty;
var buff = new StringBuilder(64);
(len - 1).Times(i => buff.AppendFormat("{0}{1}", array[i].ToString(), separator));
buff.Append(array[len - 1].ToString());
return buff.ToString();
}
/// <summary>
/// Executes the specified <c>Action&lt;int&gt;</c> delegate <paramref name="n"/> times.
/// </summary>
/// <param name="n">
/// An <see cref="int"/> is the number of times to execute.
/// </param>
/// <param name="action">
/// An <c>Action&lt;int&gt;</c> delegate that references the method(s) to execute.
/// An <see cref="int"/> parameter to pass to the method(s) is the zero-based count of
/// iteration.
/// </param>
public static void Times(this int n, Action<int> action)
{
if (n > 0 && action != null)
for (int i = 0; i < n; i++)
action(i);
}
/// <summary>
/// Converts the specified <see cref="string"/> to a <see cref="Uri"/>.
/// </summary>
/// <returns>
/// A <see cref="Uri"/> converted from <paramref name="uriString"/>, or <see langword="null"/>
/// if <paramref name="uriString"/> isn't successfully converted.
/// </returns>
/// <param name="uriString">
/// A <see cref="string"/> to convert.
/// </param>
public static Uri ToUri(this string uriString)
{
return Uri.TryCreate(
uriString, uriString.MaybeUri() ? UriKind.Absolute : UriKind.Relative, out var res)
? res
: null;
}
/// <summary>
/// URL-decodes the specified <see cref="string"/>.
/// </summary>
/// <returns>
/// A <see cref="string"/> that receives the decoded string, or the <paramref name="value"/>
/// if it's <see langword="null"/> or empty.
/// </returns>
/// <param name="value">
/// A <see cref="string"/> to decode.
/// </param>
public static string UrlDecode(this string value)
{
return value == null || value.Length == 0
? value
: WebUtility.UrlDecode(value);
}
#endregion
}
}

8
SocketHttpListener/Fin.cs
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namespace SocketHttpListener
{
internal enum Fin : byte
{
More = 0x0,
Final = 0x1
}
}

70
SocketHttpListener/HttpBase.cs
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using System;
using System.Text;
using MediaBrowser.Model.Services;
namespace SocketHttpListener
{
internal abstract class HttpBase
{
#region Private Fields
private QueryParamCollection _headers;
private Version _version;
#endregion
#region Protected Fields
protected const string CrLf = "\r\n";
#endregion
#region Protected Constructors
protected HttpBase(Version version, QueryParamCollection headers)
{
_version = version;
_headers = headers;
}
#endregion
#region Public Properties
public QueryParamCollection Headers => _headers;
public Version ProtocolVersion => _version;
#endregion
#region Private Methods
private static Encoding getEncoding(string contentType)
{
if (contentType == null || contentType.Length == 0)
return Encoding.UTF8;
var i = contentType.IndexOf("charset=", StringComparison.Ordinal);
if (i == -1)
return Encoding.UTF8;
var charset = contentType.Substring(i + 8);
i = charset.IndexOf(';');
if (i != -1)
charset = charset.Substring(0, i).TrimEnd();
return Encoding.GetEncoding(charset.Trim('"'));
}
#endregion
#region Public Methods
public byte[] ToByteArray()
{
return Encoding.UTF8.GetBytes(ToString());
}
#endregion
}
}

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SocketHttpListener/HttpResponse.cs
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using System;
using System.Linq;
using System.Net;
using System.Text;
using MediaBrowser.Model.Services;
using SocketHttpListener.Net;
namespace SocketHttpListener
{
// TODO what is the point of this class?
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, QueryParamCollection 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 QueryParamCollection())
{
Headers["Server"] = "websocket-sharp/1.0";
}
#endregion
#region Public Properties
public CookieCollection Cookies => GetCookies(Headers, true);
private static CookieCollection GetCookies(QueryParamCollection headers, bool response)
{
var name = response ? "Set-Cookie" : "Cookie";
return headers == null || !headers.Contains(name)
? new CookieCollection()
: CookieHelper.Parse(headers[name], response);
}
public bool IsProxyAuthenticationRequired => _code == "407";
public bool IsUnauthorized => _code == "401";
public bool IsWebSocketResponse
{
get
{
var headers = Headers;
return ProtocolVersion > HttpVersion.Version10 &&
_code == "101" &&
headers.Contains("Upgrade", "websocket") &&
headers.Contains("Connection", "Upgrade");
}
}
public string Reason => _reason;
public string StatusCode => _code;
#endregion
#region Internal Methods
internal static HttpResponse CreateCloseResponse(HttpStatusCode code)
{
var res = new HttpResponse(code);
res.Headers["Connection"] = "close";
return res;
}
#endregion
#region Public Methods
public void SetCookies(CookieCollection cookies)
{
if (cookies == null || cookies.Count == 0)
return;
var headers = Headers;
var sorted = cookies.OfType<Cookie>().OrderBy(i => i.Name).ToList();
foreach (var cookie in sorted)
headers.Add("Set-Cookie", cookie.ToString());
}
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.Keys)
output.AppendFormat("{0}: {1}{2}", key, headers[key], CrLf);
output.Append(CrLf);
return output.ToString();
}
#endregion
}
}

8
SocketHttpListener/Mask.cs
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namespace SocketHttpListener
{
internal enum Mask : byte
{
Unmask = 0x0,
Mask = 0x1
}
}

84
SocketHttpListener/MessageEventArgs.cs
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using System;
using System.Text;
namespace SocketHttpListener
{
/// <summary>
/// Contains the event data associated with a <see cref="WebSocket.OnMessage"/> event.
/// </summary>
/// <remarks>
/// A <see cref="WebSocket.OnMessage"/> event occurs when the <see cref="WebSocket"/> receives
/// a text or binary data frame.
/// If you want to get the received data, you access the <see cref="Data"/> or
/// <see cref="RawData"/> property.
/// </remarks>
public class MessageEventArgs : EventArgs
{
#region Private Fields
private string _data;
private Opcode _opcode;
private byte[] _rawData;
#endregion
#region Internal Constructors
internal MessageEventArgs(Opcode opcode, byte[] data)
{
_opcode = opcode;
_rawData = data;
_data = convertToString(opcode, data);
}
internal MessageEventArgs(Opcode opcode, PayloadData payload)
{
_opcode = opcode;
_rawData = payload.ApplicationData;
_data = convertToString(opcode, _rawData);
}
#endregion
#region Public Properties
/// <summary>
/// Gets the received data as a <see cref="string"/>.
/// </summary>
/// <value>
/// A <see cref="string"/> that contains the received data.
/// </value>
public string Data => _data;
/// <summary>
/// Gets the received data as an array of <see cref="byte"/>.
/// </summary>
/// <value>
/// An array of <see cref="byte"/> that contains the received data.
/// </value>
public byte[] RawData => _rawData;
/// <summary>
/// Gets the type of the received data.
/// </summary>
/// <value>
/// One of the <see cref="Opcode"/> values, indicates the type of the received data.
/// </value>
public Opcode Type => _opcode;
#endregion
#region Private Methods
private static string convertToString(Opcode opcode, byte[] data)
{
return data.Length == 0
? string.Empty
: opcode == Opcode.Text
? Encoding.UTF8.GetString(data, 0, data.Length)
: opcode.ToString();
}
#endregion
}
}

141
SocketHttpListener/Net/CookieHelper.cs
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using System;
using System.Collections.Generic;
using System.Globalization;
using System.Net;
using System.Text;
namespace SocketHttpListener.Net
{
public static class CookieHelper
{
internal static CookieCollection Parse(string value, bool response)
{
return response
? parseResponse(value)
: null;
}
private static string[] splitCookieHeaderValue(string value)
{
return new List<string>(value.SplitHeaderValue(',', ';')).ToArray();
}
private static CookieCollection parseResponse(string value)
{
var cookies = new CookieCollection();
Cookie cookie = null;
var pairs = splitCookieHeaderValue(value);
for (int i = 0; i < pairs.Length; i++)
{
var pair = pairs[i].Trim();
if (pair.Length == 0)
continue;
if (pair.StartsWith("version", StringComparison.OrdinalIgnoreCase))
{
if (cookie != null)
cookie.Version = int.Parse(pair.GetValueInternal("=").Trim('"'));
}
else if (pair.StartsWith("expires", StringComparison.OrdinalIgnoreCase))
{
var buffer = new StringBuilder(pair.GetValueInternal("="), 32);
if (i < pairs.Length - 1)
buffer.AppendFormat(", {0}", pairs[++i].Trim());
if (!DateTime.TryParseExact(
buffer.ToString(),
new[] { "ddd, dd'-'MMM'-'yyyy HH':'mm':'ss 'GMT'", "r" },
new CultureInfo("en-US"),
DateTimeStyles.AdjustToUniversal | DateTimeStyles.AssumeUniversal,
out var expires))
expires = DateTime.Now;
if (cookie != null && cookie.Expires == DateTime.MinValue)
cookie.Expires = expires.ToLocalTime();
}
else if (pair.StartsWith("max-age", StringComparison.OrdinalIgnoreCase))
{
var max = int.Parse(pair.GetValueInternal("=").Trim('"'));
var expires = DateTime.Now.AddSeconds((double)max);
if (cookie != null)
cookie.Expires = expires;
}
else if (pair.StartsWith("path", StringComparison.OrdinalIgnoreCase))
{
if (cookie != null)
cookie.Path = pair.GetValueInternal("=");
}
else if (pair.StartsWith("domain", StringComparison.OrdinalIgnoreCase))
{
if (cookie != null)
cookie.Domain = pair.GetValueInternal("=");
}
else if (pair.StartsWith("port", StringComparison.OrdinalIgnoreCase))
{
var port = pair.Equals("port", StringComparison.OrdinalIgnoreCase)
? "\"\""
: pair.GetValueInternal("=");
if (cookie != null)
cookie.Port = port;
}
else if (pair.StartsWith("comment", StringComparison.OrdinalIgnoreCase))
{
if (cookie != null)
cookie.Comment = pair.GetValueInternal("=").UrlDecode();
}
else if (pair.StartsWith("commenturl", StringComparison.OrdinalIgnoreCase))
{
if (cookie != null)
cookie.CommentUri = pair.GetValueInternal("=").Trim('"').ToUri();
}
else if (pair.StartsWith("discard", StringComparison.OrdinalIgnoreCase))
{
if (cookie != null)
cookie.Discard = true;
}
else if (pair.StartsWith("secure", StringComparison.OrdinalIgnoreCase))
{
if (cookie != null)
cookie.Secure = true;
}
else if (pair.StartsWith("httponly", StringComparison.OrdinalIgnoreCase))
{
if (cookie != null)
cookie.HttpOnly = true;
}
else
{
if (cookie != null)
cookies.Add(cookie);
string name;
string val = string.Empty;
var pos = pair.IndexOf('=');
if (pos == -1)
{
name = pair;
}
else if (pos == pair.Length - 1)
{
name = pair.Substring(0, pos).TrimEnd(' ');
}
else
{
name = pair.Substring(0, pos).TrimEnd(' ');
val = pair.Substring(pos + 1).TrimStart(' ');
}
cookie = new Cookie(name, val);
}
}
if (cookie != null)
cookies.Add(cookie);
return cookies;
}
}
}

43
SocketHttpListener/Opcode.cs
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@ -1,43 +0,0 @@
namespace SocketHttpListener
{
/// <summary>
/// Contains the values of the opcode that indicates the type of a WebSocket frame.
/// </summary>
/// <remarks>
/// The values of the opcode are defined in
/// <see href="http://tools.ietf.org/html/rfc6455#section-5.2">Section 5.2</see> of RFC 6455.
/// </remarks>
public enum Opcode : byte
{
/// <summary>
/// Equivalent to numeric value 0.
/// Indicates a continuation frame.
/// </summary>
Cont = 0x0,
/// <summary>
/// Equivalent to numeric value 1.
/// Indicates a text frame.
/// </summary>
Text = 0x1,
/// <summary>
/// Equivalent to numeric value 2.
/// Indicates a binary frame.
/// </summary>
Binary = 0x2,
/// <summary>
/// Equivalent to numeric value 8.
/// Indicates a connection close frame.
/// </summary>
Close = 0x8,
/// <summary>
/// Equivalent to numeric value 9.
/// Indicates a ping frame.
/// </summary>
Ping = 0x9,
/// <summary>
/// Equivalent to numeric value 10.
/// Indicates a pong frame.
/// </summary>
Pong = 0xa
}
}

130
SocketHttpListener/PayloadData.cs
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@ -1,130 +0,0 @@
using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
namespace SocketHttpListener
{
internal class PayloadData : IEnumerable<byte>
{
#region Private Fields
private byte[] _applicationData;
private byte[] _extensionData;
private bool _masked;
#endregion
#region Public Const Fields
public const ulong MaxLength = long.MaxValue;
#endregion
#region Public Constructors
public PayloadData()
: this(new byte[0], new byte[0], false)
{
}
public PayloadData(byte[] applicationData)
: this(new byte[0], applicationData, false)
{
}
public PayloadData(string applicationData)
: this(new byte[0], Encoding.UTF8.GetBytes(applicationData), false)
{
}
public PayloadData(byte[] applicationData, bool masked)
: this(new byte[0], applicationData, masked)
{
}
public PayloadData(byte[] extensionData, byte[] applicationData, bool masked)
{
_extensionData = extensionData;
_applicationData = applicationData;
_masked = masked;
}
#endregion
#region Internal Properties
internal bool ContainsReservedCloseStatusCode =>
_applicationData.Length > 1 &&
_applicationData.SubArray(0, 2).ToUInt16(ByteOrder.Big).IsReserved();
#endregion
#region Public Properties
public byte[] ApplicationData => _applicationData;
public byte[] ExtensionData => _extensionData;
public bool IsMasked => _masked;
public ulong Length => (ulong)(_extensionData.Length + _applicationData.Length);
#endregion
#region Private Methods
private static void mask(byte[] src, byte[] key)
{
for (long i = 0; i < src.Length; i++)
src[i] = (byte)(src[i] ^ key[i % 4]);
}
#endregion
#region Public Methods
public IEnumerator<byte> GetEnumerator()
{
foreach (byte b in _extensionData)
yield return b;
foreach (byte b in _applicationData)
yield return b;
}
public void Mask(byte[] maskingKey)
{
if (_extensionData.Length > 0)
mask(_extensionData, maskingKey);
if (_applicationData.Length > 0)
mask(_applicationData, maskingKey);
_masked = !_masked;
}
public byte[] ToByteArray()
{
return _extensionData.Length > 0
? new List<byte>(this).ToArray()
: _applicationData;
}
public override string ToString()
{
return BitConverter.ToString(ToByteArray());
}
#endregion
#region Explicitly Implemented Interface Members
IEnumerator IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
#endregion
}
}

21
SocketHttpListener/Properties/AssemblyInfo.cs
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@ -1,21 +0,0 @@
using System.Reflection;
using System.Resources;
using System.Runtime.InteropServices;
// General Information about an assembly is controlled through the following
// set of attributes. Change these attribute values to modify the information
// associated with an assembly.
[assembly: AssemblyTitle("SocketHttpListener")]
[assembly: AssemblyDescription("")]
[assembly: AssemblyConfiguration("")]
[assembly: AssemblyCompany("Jellyfin Project")]
[assembly: AssemblyProduct("Jellyfin: The Free Software Media System")]
[assembly: AssemblyCopyright("Copyright © 2019 Jellyfin Contributors. Code released under the GNU General Public License Version 2")]
[assembly: AssemblyTrademark("")]
[assembly: AssemblyCulture("")]
[assembly: NeutralResourcesLanguage("en")]
// Setting ComVisible to false makes the types in this assembly not visible
// to COM components. If you need to access a type in this assembly from
// COM, set the ComVisible attribute to true on that type.
[assembly: ComVisible(false)]

8
SocketHttpListener/Rsv.cs
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@ -1,8 +0,0 @@
namespace SocketHttpListener
{
internal enum Rsv : byte
{
Off = 0x0,
On = 0x1
}
}

18
SocketHttpListener/SocketHttpListener.csproj
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@ -1,18 +0,0 @@
<Project Sdk="Microsoft.NET.Sdk">
<ItemGroup>
<ProjectReference Include="..\MediaBrowser.Common\MediaBrowser.Common.csproj" />
<ProjectReference Include="..\MediaBrowser.Model\MediaBrowser.Model.csproj" />
</ItemGroup>
<ItemGroup>
<Compile Include="..\SharedVersion.cs" />
</ItemGroup>
<PropertyGroup>
<TargetFramework>netstandard2.0</TargetFramework>
<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
<GenerateAssemblyInfo>false</GenerateAssemblyInfo>
</PropertyGroup>
</Project>

74
SocketHttpListener/SocketStream.cs
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using System;
using System.IO;
using System.Net.Sockets;
namespace SocketHttpListener
{
public class SocketStream : Stream
{
private readonly Socket _socket;
public SocketStream(Socket socket, bool ownsSocket)
{
_socket = socket;
}
public override void Flush()
{
}
public override bool CanRead => true;
public override bool CanSeek => false;
public override bool CanWrite => true;
public override long Length => throw new NotImplementedException();
public override long Position
{
get => throw new NotImplementedException();
set => throw new NotImplementedException();
}
public override void Write(byte[] buffer, int offset, int count)
{
_socket.Send(buffer, offset, count, SocketFlags.None);
}
public override IAsyncResult BeginWrite(byte[] buffer, int offset, int count, AsyncCallback callback, object state)
{
return _socket.BeginSend(buffer, offset, count, SocketFlags.None, callback, state);
}
public override void EndWrite(IAsyncResult asyncResult)
{
_socket.EndSend(asyncResult);
}
public override void SetLength(long value)
{
throw new NotImplementedException();
}
public override long Seek(long offset, SeekOrigin origin)
{
throw new NotImplementedException();
}
public override int Read(byte[] buffer, int offset, int count)
{
return _socket.Receive(buffer, offset, count, SocketFlags.None);
}
public override IAsyncResult BeginRead(byte[] buffer, int offset, int count, AsyncCallback callback, object state)
{
return _socket.BeginReceive(buffer, offset, count, SocketFlags.None, callback, state);
}
public override int EndRead(IAsyncResult asyncResult)
{
return _socket.EndReceive(asyncResult);
}
}
}

777
SocketHttpListener/WebSocket.cs
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using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Net.WebSockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using WebSocketState = System.Net.WebSockets.WebSocketState;
namespace SocketHttpListener
{
/// <summary>
/// Implements the WebSocket interface.
/// </summary>
/// <remarks>
/// The WebSocket class provides a set of methods and properties for two-way communication using
/// the WebSocket protocol (<see href="http://tools.ietf.org/html/rfc6455">RFC 6455</see>).
/// </remarks>
public class WebSocket : IDisposable
{
#region Private Fields
private Action _closeContext;
private CompressionMethod _compression;
private WebSocketContext _context;
private CookieCollection _cookies;
private AutoResetEvent _exitReceiving;
private object _forConn;
private readonly SemaphoreSlim _forEvent = new SemaphoreSlim(1, 1);
private object _forMessageEventQueue;
private readonly SemaphoreSlim _forSend = new SemaphoreSlim(1, 1);
private const string _guid = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
private Queue<MessageEventArgs> _messageEventQueue;
private string _protocol;
private volatile WebSocketState _readyState;
private AutoResetEvent _receivePong;
private bool _secure;
private Stream _stream;
private const string _version = "13";
#endregion
#region Internal Fields
internal const int FragmentLength = 1016; // Max value is int.MaxValue - 14.
#endregion
#region Internal Constructors
// As server
internal WebSocket(string protocol)
{
_protocol = protocol;
}
public void SetContext(HttpListenerWebSocketContext context, Action closeContextFn, Stream stream)
{
_context = context;
_closeContext = closeContextFn;
_secure = context.IsSecureConnection;
_stream = stream;
init();
}
// In the .NET Framework, this pulls the value from a P/Invoke. Here we just hardcode it to a reasonable default.
public static TimeSpan DefaultKeepAliveInterval => TimeSpan.FromSeconds(30);
#endregion
/// <summary>
/// Gets the state of the WebSocket connection.
/// </summary>
/// <value>
/// One of the <see cref="WebSocketState"/> enum values, indicates the state of the WebSocket
/// connection. The default value is <see cref="WebSocketState.Connecting"/>.
/// </value>
public WebSocketState ReadyState => _readyState;
#region Public Events
/// <summary>
/// Occurs when the WebSocket connection has been closed.
/// </summary>
public event EventHandler<CloseEventArgs> OnClose;
/// <summary>
/// Occurs when the <see cref="WebSocket"/> gets an error.
/// </summary>
public event EventHandler<ErrorEventArgs> OnError;
/// <summary>
/// Occurs when the <see cref="WebSocket"/> receives a message.
/// </summary>
public event EventHandler<MessageEventArgs> OnMessage;
/// <summary>
/// Occurs when the WebSocket connection has been established.
/// </summary>
public event EventHandler OnOpen;
#endregion
#region Private Methods
private async Task CloseAsync(CloseStatusCode code, string reason, bool wait)
{
await CloseAsync(new PayloadData(
await ((ushort)code).AppendAsync(reason).ConfigureAwait(false)),
!code.IsReserved(),
wait).ConfigureAwait(false);
}
private async Task CloseAsync(PayloadData payload, bool send, bool wait)
{
lock (_forConn)
{
if (_readyState == WebSocketState.CloseSent || _readyState == WebSocketState.Closed)
{
return;
}
_readyState = WebSocketState.CloseSent;
}
var e = new CloseEventArgs(payload)
{
WasClean = await CloseHandshakeAsync(
send ? WebSocketFrame.CreateCloseFrame(Mask.Unmask, payload).ToByteArray() : null,
wait ? 1000 : 0).ConfigureAwait(false)
};
_readyState = WebSocketState.Closed;
try
{
OnClose.Emit(this, e);
}
catch (Exception ex)
{
error("An exception has occurred while OnClose.", ex);
}
}
private async Task<bool> CloseHandshakeAsync(byte[] frameAsBytes, int millisecondsTimeout)
{
var sent = frameAsBytes != null && await WriteBytesAsync(frameAsBytes).ConfigureAwait(false);
var received =
millisecondsTimeout == 0 ||
(sent && _exitReceiving != null && _exitReceiving.WaitOne(millisecondsTimeout));
closeServerResources();
if (_receivePong != null)
{
_receivePong.Dispose();
_receivePong = null;
}
if (_exitReceiving != null)
{
_exitReceiving.Dispose();
_exitReceiving = null;
}
var result = sent && received;
return result;
}
// As server
private void closeServerResources()
{
if (_closeContext == null)
return;
try
{
_closeContext();
}
catch (SocketException)
{
// it could be unable to send the handshake response
}
_closeContext = null;
_stream = null;
_context = null;
}
private async Task<bool> ConcatenateFragmentsIntoAsync(Stream dest)
{
while (true)
{
var frame = await WebSocketFrame.ReadAsync(_stream, true).ConfigureAwait(false);
if (frame.IsFinal)
{
/* FINAL */
// CONT
if (frame.IsContinuation)
{
dest.WriteBytes(frame.PayloadData.ApplicationData);
break;
}
// PING
if (frame.IsPing)
{
processPingFrame(frame);
continue;
}
// PONG
if (frame.IsPong)
{
processPongFrame(frame);
continue;
}
// CLOSE
if (frame.IsClose)
return await ProcessCloseFrameAsync(frame).ConfigureAwait(false);
}
else
{
/* MORE */
// CONT
if (frame.IsContinuation)
{
dest.WriteBytes(frame.PayloadData.ApplicationData);
continue;
}
}
// ?
return await ProcessUnsupportedFrameAsync(
frame,
CloseStatusCode.IncorrectData,
"An incorrect data has been received while receiving fragmented data.").ConfigureAwait(false);
}
return true;
}
// As server
private HttpResponse createHandshakeCloseResponse(HttpStatusCode code)
{
var res = HttpResponse.CreateCloseResponse(code);
res.Headers["Sec-WebSocket-Version"] = _version;
return res;
}
private MessageEventArgs dequeueFromMessageEventQueue()
{
lock (_forMessageEventQueue)
return _messageEventQueue.Count > 0
? _messageEventQueue.Dequeue()
: null;
}
private void enqueueToMessageEventQueue(MessageEventArgs e)
{
lock (_forMessageEventQueue)
_messageEventQueue.Enqueue(e);
}
private void error(string message, Exception exception)
{
try
{
if (exception != null)
{
message += ". Exception.Message: " + exception.Message;
}
OnError.Emit(this, new ErrorEventArgs(message));
}
catch (Exception)
{
}
}
private void error(string message)
{
try
{
OnError.Emit(this, new ErrorEventArgs(message));
}
catch (Exception)
{
}
}
private void init()
{
_compression = CompressionMethod.None;
_cookies = new CookieCollection();
_forConn = new object();
_messageEventQueue = new Queue<MessageEventArgs>();
_forMessageEventQueue = ((ICollection)_messageEventQueue).SyncRoot;
_readyState = WebSocketState.Connecting;
}
private async Task OpenAsync()
{
try
{
startReceiving();
}
catch (Exception ex)
{
await ProcessExceptionAsync(ex, "An exception has occurred while opening.").ConfigureAwait(false);
}
await _forEvent.WaitAsync().ConfigureAwait(false);
try
{
OnOpen?.Invoke(this, EventArgs.Empty);
}
catch (Exception ex)
{
await ProcessExceptionAsync(ex, "An exception has occurred while OnOpen.").ConfigureAwait(false);
}
finally
{
_forEvent.Release();
}
}
private async Task<bool> ProcessCloseFrameAsync(WebSocketFrame frame)
{
var payload = frame.PayloadData;
await CloseAsync(payload, !payload.ContainsReservedCloseStatusCode, false).ConfigureAwait(false);
return false;
}
private bool processDataFrame(WebSocketFrame frame)
{
var e = frame.IsCompressed
? new MessageEventArgs(
frame.Opcode, frame.PayloadData.ApplicationData.Decompress(_compression))
: new MessageEventArgs(frame.Opcode, frame.PayloadData);
enqueueToMessageEventQueue(e);
return true;
}
private async Task ProcessExceptionAsync(Exception exception, string message)
{
var code = CloseStatusCode.Abnormal;
var reason = message;
if (exception is WebSocketException)
{
var wsex = (WebSocketException)exception;
code = wsex.Code;
reason = wsex.Message;
}
error(message ?? code.GetMessage(), exception);
if (_readyState == WebSocketState.Connecting)
{
await CloseAsync(HttpStatusCode.BadRequest).ConfigureAwait(false);
}
else
{
await CloseAsync(code, reason ?? code.GetMessage(), false).ConfigureAwait(false);
}
}
private Task<bool> ProcessFragmentedFrameAsync(WebSocketFrame frame)
{
return frame.IsContinuation // Not first fragment
? Task.FromResult(true)
: ProcessFragmentsAsync(frame);
}
private async Task<bool> ProcessFragmentsAsync(WebSocketFrame first)
{
using (var buff = new MemoryStream())
{
buff.WriteBytes(first.PayloadData.ApplicationData);
if (!await ConcatenateFragmentsIntoAsync(buff).ConfigureAwait(false))
{
return false;
}
byte[] data;
if (_compression != CompressionMethod.None)
{
data = buff.DecompressToArray(_compression);
}
else
{
data = buff.ToArray();
}
enqueueToMessageEventQueue(new MessageEventArgs(first.Opcode, data));
return true;
}
}
private bool processPingFrame(WebSocketFrame frame)
{
return true;
}
private bool processPongFrame(WebSocketFrame frame)
{
_receivePong.Set();
return true;
}
private async Task<bool> ProcessUnsupportedFrameAsync(WebSocketFrame frame, CloseStatusCode code, string reason)
{
await ProcessExceptionAsync(new WebSocketException(code, reason), null).ConfigureAwait(false);
return false;
}
private Task<bool> ProcessWebSocketFrameAsync(WebSocketFrame frame)
{
// TODO: @bond change to if/else chain
return frame.IsCompressed && _compression == CompressionMethod.None
? ProcessUnsupportedFrameAsync(
frame,
CloseStatusCode.IncorrectData,
"A compressed data has been received without available decompression method.")
: frame.IsFragmented
? ProcessFragmentedFrameAsync(frame)
: frame.IsData
? Task.FromResult(processDataFrame(frame))
: frame.IsPing
? Task.FromResult(processPingFrame(frame))
: frame.IsPong
? Task.FromResult(processPongFrame(frame))
: frame.IsClose
? ProcessCloseFrameAsync(frame)
: ProcessUnsupportedFrameAsync(frame, CloseStatusCode.PolicyViolation, null);
}
private async Task<bool> SendAsync(Opcode opcode, Stream stream)
{
await _forSend.WaitAsync().ConfigureAwait(false);
try
{
var src = stream;
var compressed = false;
var sent = false;
try
{
if (_compression != CompressionMethod.None)
{
stream = stream.Compress(_compression);
compressed = true;
}
sent = await SendAsync(opcode, Mask.Unmask, stream, compressed).ConfigureAwait(false);
if (!sent)
error("Sending a data has been interrupted.");
}
catch (Exception ex)
{
error("An exception has occurred while sending a data.", ex);
}
finally
{
if (compressed)
stream.Dispose();
src.Dispose();
}
return sent;
}
finally
{
_forSend.Release();
}
}
private async Task<bool> SendAsync(Opcode opcode, Mask mask, Stream stream, bool compressed)
{
var len = stream.Length;
/* Not fragmented */
if (len == 0)
return await SendAsync(Fin.Final, opcode, mask, new byte[0], compressed).ConfigureAwait(false);
var quo = len / FragmentLength;
var rem = (int)(len % FragmentLength);
byte[] buff = null;
if (quo == 0)
{
buff = new byte[rem];
return await stream.ReadAsync(buff, 0, rem).ConfigureAwait(false) == rem &&
await SendAsync(Fin.Final, opcode, mask, buff, compressed).ConfigureAwait(false);
}
buff = new byte[FragmentLength];
if (quo == 1 && rem == 0)
return await stream.ReadAsync(buff, 0, FragmentLength).ConfigureAwait(false) == FragmentLength &&
await SendAsync(Fin.Final, opcode, mask, buff, compressed).ConfigureAwait(false);
/* Send fragmented */
// Begin
if (await stream.ReadAsync(buff, 0, FragmentLength).ConfigureAwait(false) != FragmentLength ||
!await SendAsync(Fin.More, opcode, mask, buff, compressed).ConfigureAwait(false))
return false;
var n = rem == 0 ? quo - 2 : quo - 1;
for (long i = 0; i < n; i++)
if (await stream.ReadAsync(buff, 0, FragmentLength).ConfigureAwait(false) != FragmentLength ||
!await SendAsync(Fin.More, Opcode.Cont, mask, buff, compressed).ConfigureAwait(false))
return false;
// End
if (rem == 0)
rem = FragmentLength;
else
buff = new byte[rem];
return await stream.ReadAsync(buff, 0, rem).ConfigureAwait(false) == rem &&
await SendAsync(Fin.Final, Opcode.Cont, mask, buff, compressed).ConfigureAwait(false);
}
private Task<bool> SendAsync(Fin fin, Opcode opcode, Mask mask, byte[] data, bool compressed)
{
lock (_forConn)
{
if (_readyState != WebSocketState.Open)
{
return Task.FromResult(false);
}
return WriteBytesAsync(
WebSocketFrame.CreateWebSocketFrame(fin, opcode, mask, data, compressed).ToByteArray());
}
}
// As server
private Task<bool> SendHttpResponseAsync(HttpResponse response)
=> WriteBytesAsync(response.ToByteArray());
private void startReceiving()
{
if (_messageEventQueue.Count > 0)
{
_messageEventQueue.Clear();
}
_exitReceiving = new AutoResetEvent(false);
_receivePong = new AutoResetEvent(false);
Action receive = null;
receive = async () => await WebSocketFrame.ReadAsync(
_stream,
true,
async frame =>
{
if (await ProcessWebSocketFrameAsync(frame).ConfigureAwait(false) && _readyState != WebSocketState.Closed)
{
receive();
if (!frame.IsData)
{
return;
}
await _forEvent.WaitAsync().ConfigureAwait(false);
try
{
var e = dequeueFromMessageEventQueue();
if (e != null && _readyState == WebSocketState.Open)
{
OnMessage.Emit(this, e);
}
}
catch (Exception ex)
{
await ProcessExceptionAsync(ex, "An exception has occurred while OnMessage.").ConfigureAwait(false);
}
finally
{
_forEvent.Release();
}
}
else if (_exitReceiving != null)
{
_exitReceiving.Set();
}
},
async ex => await ProcessExceptionAsync(ex, "An exception has occurred while receiving a message.")).ConfigureAwait(false);
receive();
}
private async Task<bool> WriteBytesAsync(byte[] data)
{
try
{
await _stream.WriteAsync(data, 0, data.Length).ConfigureAwait(false);
return true;
}
catch (Exception)
{
return false;
}
}
#endregion
#region Internal Methods
// As server
internal async Task CloseAsync(HttpResponse response)
{
_readyState = WebSocketState.CloseSent;
await SendHttpResponseAsync(response).ConfigureAwait(false);
closeServerResources();
_readyState = WebSocketState.Closed;
}
// As server
internal Task CloseAsync(HttpStatusCode code)
=> CloseAsync(createHandshakeCloseResponse(code));
// As server
public async Task ConnectAsServer()
{
try
{
_readyState = WebSocketState.Open;
await OpenAsync().ConfigureAwait(false);
}
catch (Exception ex)
{
await ProcessExceptionAsync(ex, "An exception has occurred while connecting.").ConfigureAwait(false);
}
}
#endregion
#region Public Methods
/// <summary>
/// Closes the WebSocket connection, and releases all associated resources.
/// </summary>
public Task CloseAsync()
{
var msg = _readyState.CheckIfClosable();
if (msg != null)
{
error(msg);
return Task.CompletedTask;
}
var send = _readyState == WebSocketState.Open;
return CloseAsync(new PayloadData(), send, send);
}
/// <summary>
/// Closes the WebSocket connection with the specified <see cref="CloseStatusCode"/>
/// and <see cref="string"/>, and releases all associated resources.
/// </summary>
/// <remarks>
/// This method emits a <see cref="OnError"/> event if the size
/// of <paramref name="reason"/> is greater than 123 bytes.
/// </remarks>
/// <param name="code">
/// One of the <see cref="CloseStatusCode"/> enum values, represents the status code
/// indicating the reason for the close.
/// </param>
/// <param name="reason">
/// A <see cref="string"/> that represents the reason for the close.
/// </param>
public async Task CloseAsync(CloseStatusCode code, string reason)
{
byte[] data = null;
var msg = _readyState.CheckIfClosable() ??
(data = await ((ushort)code).AppendAsync(reason).ConfigureAwait(false)).CheckIfValidControlData("reason");
if (msg != null)
{
error(msg);
return;
}
var send = _readyState == WebSocketState.Open && !code.IsReserved();
await CloseAsync(new PayloadData(data), send, send).ConfigureAwait(false);
}
/// <summary>
/// Sends a binary <paramref name="data"/> asynchronously using the WebSocket connection.
/// </summary>
/// <remarks>
/// This method doesn't wait for the send to be complete.
/// </remarks>
/// <param name="data">
/// An array of <see cref="byte"/> that represents the binary data to send.
/// </param>
public Task SendAsync(byte[] data)
{
if (data == null)
{
throw new ArgumentNullException(nameof(data));
}
var msg = _readyState.CheckIfOpen();
if (msg != null)
{
throw new Exception(msg);
}
return SendAsync(Opcode.Binary, new MemoryStream(data));
}
/// <summary>
/// Sends a text <paramref name="data"/> asynchronously using the WebSocket connection.
/// </summary>
/// <remarks>
/// This method doesn't wait for the send to be complete.
/// </remarks>
/// <param name="data">
/// A <see cref="string"/> that represents the text data to send.
/// </param>
public Task SendAsync(string data)
{
if (data == null)
{
throw new ArgumentNullException(nameof(data));
}
var msg = _readyState.CheckIfOpen();
if (msg != null)
{
throw new Exception(msg);
}
return SendAsync(Opcode.Text, new MemoryStream(Encoding.UTF8.GetBytes(data)));
}
#endregion
#region Explicit Interface Implementation
/// <summary>
/// Closes the WebSocket connection, and releases all associated resources.
/// </summary>
/// <remarks>
/// This method closes the WebSocket connection with <see cref="CloseStatusCode.Away"/>.
/// </remarks>
void IDisposable.Dispose()
{
CloseAsync(CloseStatusCode.Away, null).GetAwaiter().GetResult();
}
#endregion
}
}

61
SocketHttpListener/WebSocketException.cs
View file

@ -1,61 +0,0 @@
using System;
namespace SocketHttpListener
{
/// <summary>
/// The exception that is thrown when a <see cref="WebSocket"/> gets a fatal error.
/// </summary>
public class WebSocketException : Exception
{
#region Internal Constructors
internal WebSocketException()
: this(CloseStatusCode.Abnormal, null, null)
{
}
internal WebSocketException(string message)
: this(CloseStatusCode.Abnormal, message, null)
{
}
internal WebSocketException(CloseStatusCode code)
: this(code, null, null)
{
}
internal WebSocketException(string message, Exception innerException)
: this(CloseStatusCode.Abnormal, message, innerException)
{
}
internal WebSocketException(CloseStatusCode code, string message)
: this(code, message, null)
{
}
internal WebSocketException(CloseStatusCode code, string message, Exception innerException)
: base(message ?? code.GetMessage(), innerException)
{
Code = code;
}
#endregion
#region Public Properties
/// <summary>
/// Gets the status code indicating the cause for the exception.
/// </summary>
/// <value>
/// One of the <see cref="CloseStatusCode"/> enum values, represents the status code indicating
/// the cause for the exception.
/// </value>
public CloseStatusCode Code
{
get; private set;
}
#endregion
}
}

432
SocketHttpListener/WebSocketFrame.cs
View file

@ -1,432 +0,0 @@
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Threading.Tasks;
namespace SocketHttpListener
{
internal class WebSocketFrame : IEnumerable<byte>
{
#region Private Fields
private byte[] _extPayloadLength;
private Fin _fin;
private Mask _mask;
private byte[] _maskingKey;
private Opcode _opcode;
private PayloadData _payloadData;
private byte _payloadLength;
private Rsv _rsv1;
private Rsv _rsv2;
private Rsv _rsv3;
#endregion
#region Internal Fields
internal static readonly byte[] EmptyUnmaskPingData;
#endregion
#region Static Constructor
static WebSocketFrame()
{
EmptyUnmaskPingData = CreatePingFrame(Mask.Unmask).ToByteArray();
}
#endregion
#region Private Constructors
private WebSocketFrame()
{
}
#endregion
#region Internal Constructors
internal WebSocketFrame(Opcode opcode, PayloadData payload)
: this(Fin.Final, opcode, Mask.Mask, payload, false)
{
}
internal WebSocketFrame(Opcode opcode, Mask mask, PayloadData payload)
: this(Fin.Final, opcode, mask, payload, false)
{
}
internal WebSocketFrame(Fin fin, Opcode opcode, Mask mask, PayloadData payload)
: this(fin, opcode, mask, payload, false)
{
}
internal WebSocketFrame(
Fin fin, Opcode opcode, Mask mask, PayloadData payload, bool compressed)
{
_fin = fin;
_rsv1 = isData(opcode) && compressed ? Rsv.On : Rsv.Off;
_rsv2 = Rsv.Off;
_rsv3 = Rsv.Off;
_opcode = opcode;
_mask = mask;
var len = payload.Length;
if (len < 126)
{
_payloadLength = (byte)len;
_extPayloadLength = new byte[0];
}
else if (len < 0x010000)
{
_payloadLength = (byte)126;
_extPayloadLength = ((ushort)len).ToByteArrayInternally(ByteOrder.Big);
}
else
{
_payloadLength = (byte)127;
_extPayloadLength = len.ToByteArrayInternally(ByteOrder.Big);
}
if (mask == Mask.Mask)
{
_maskingKey = createMaskingKey();
payload.Mask(_maskingKey);
}
else
{
_maskingKey = new byte[0];
}
_payloadData = payload;
}
#endregion
#region Public Properties
public byte[] ExtendedPayloadLength => _extPayloadLength;
public Fin Fin => _fin;
public bool IsBinary => _opcode == Opcode.Binary;
public bool IsClose => _opcode == Opcode.Close;
public bool IsCompressed => _rsv1 == Rsv.On;
public bool IsContinuation => _opcode == Opcode.Cont;
public bool IsControl => _opcode == Opcode.Close || _opcode == Opcode.Ping || _opcode == Opcode.Pong;
public bool IsData => _opcode == Opcode.Binary || _opcode == Opcode.Text;
public bool IsFinal => _fin == Fin.Final;
public bool IsFragmented => _fin == Fin.More || _opcode == Opcode.Cont;
public bool IsMasked => _mask == Mask.Mask;
public bool IsPerMessageCompressed => (_opcode == Opcode.Binary || _opcode == Opcode.Text) && _rsv1 == Rsv.On;
public bool IsPing => _opcode == Opcode.Ping;
public bool IsPong => _opcode == Opcode.Pong;
public bool IsText => _opcode == Opcode.Text;
public ulong Length => 2 + (ulong)(_extPayloadLength.Length + _maskingKey.Length) + _payloadData.Length;
public Mask Mask => _mask;
public byte[] MaskingKey => _maskingKey;
public Opcode Opcode => _opcode;
public PayloadData PayloadData => _payloadData;
public byte PayloadLength => _payloadLength;
public Rsv Rsv1 => _rsv1;
public Rsv Rsv2 => _rsv2;
public Rsv Rsv3 => _rsv3;
#endregion
#region Private Methods
private byte[] createMaskingKey()
{
var key = new byte[4];
var rand = new Random();
rand.NextBytes(key);
return key;
}
private static bool isControl(Opcode opcode)
{
return opcode == Opcode.Close || opcode == Opcode.Ping || opcode == Opcode.Pong;
}
private static bool isData(Opcode opcode)
{
return opcode == Opcode.Text || opcode == Opcode.Binary;
}
private static async Task<WebSocketFrame> ReadAsync(byte[] header, Stream stream, bool unmask)
{
/* Header */
// FIN
var fin = (header[0] & 0x80) == 0x80 ? Fin.Final : Fin.More;
// RSV1
var rsv1 = (header[0] & 0x40) == 0x40 ? Rsv.On : Rsv.Off;
// RSV2
var rsv2 = (header[0] & 0x20) == 0x20 ? Rsv.On : Rsv.Off;
// RSV3
var rsv3 = (header[0] & 0x10) == 0x10 ? Rsv.On : Rsv.Off;
// Opcode
var opcode = (Opcode)(header[0] & 0x0f);
// MASK
var mask = (header[1] & 0x80) == 0x80 ? Mask.Mask : Mask.Unmask;
// Payload Length
var payloadLen = (byte)(header[1] & 0x7f);
// Check if correct frame.
var incorrect = isControl(opcode) && fin == Fin.More
? "A control frame is fragmented."
: !isData(opcode) && rsv1 == Rsv.On
? "A non data frame is compressed."
: null;
if (incorrect != null)
throw new WebSocketException(CloseStatusCode.IncorrectData, incorrect);
// Check if consistent frame.
if (isControl(opcode) && payloadLen > 125)
throw new WebSocketException(
CloseStatusCode.InconsistentData,
"The length of payload data of a control frame is greater than 125 bytes.");
var frame = new WebSocketFrame();
frame._fin = fin;
frame._rsv1 = rsv1;
frame._rsv2 = rsv2;
frame._rsv3 = rsv3;
frame._opcode = opcode;
frame._mask = mask;
frame._payloadLength = payloadLen;
/* Extended Payload Length */
var size = payloadLen < 126
? 0
: payloadLen == 126
? 2
: 8;
var extPayloadLen = size > 0 ? await stream.ReadBytesAsync(size).ConfigureAwait(false) : Array.Empty<byte>();
if (size > 0 && extPayloadLen.Length != size)
throw new WebSocketException(
"The 'Extended Payload Length' of a frame cannot be read from the data source.");
frame._extPayloadLength = extPayloadLen;
/* Masking Key */
var masked = mask == Mask.Mask;
var maskingKey = masked ? await stream.ReadBytesAsync(4).ConfigureAwait(false) : Array.Empty<byte>();
if (masked && maskingKey.Length != 4)
throw new WebSocketException(
"The 'Masking Key' of a frame cannot be read from the data source.");
frame._maskingKey = maskingKey;
/* Payload Data */
ulong len = payloadLen < 126
? payloadLen
: payloadLen == 126
? extPayloadLen.ToUInt16(ByteOrder.Big)
: extPayloadLen.ToUInt64(ByteOrder.Big);
byte[] data = null;
if (len > 0)
{
// Check if allowable payload data length.
if (payloadLen > 126 && len > PayloadData.MaxLength)
throw new WebSocketException(
CloseStatusCode.TooBig,
"The length of 'Payload Data' of a frame is greater than the allowable length.");
data = payloadLen > 126
? await stream.ReadBytesAsync((long)len, 1024).ConfigureAwait(false)
: await stream.ReadBytesAsync((int)len).ConfigureAwait(false);
//if (data.LongLength != (long)len)
// throw new WebSocketException(
// "The 'Payload Data' of a frame cannot be read from the data source.");
}
else
{
data = Array.Empty<byte>();
}
var payload = new PayloadData(data, masked);
if (masked && unmask)
{
payload.Mask(maskingKey);
frame._mask = Mask.Unmask;
frame._maskingKey = Array.Empty<byte>();
}
frame._payloadData = payload;
return frame;
}
#endregion
#region Internal Methods
internal static WebSocketFrame CreateCloseFrame(Mask mask, byte[] data)
{
return new WebSocketFrame(Opcode.Close, mask, new PayloadData(data));
}
internal static WebSocketFrame CreateCloseFrame(Mask mask, PayloadData payload)
{
return new WebSocketFrame(Opcode.Close, mask, payload);
}
internal static async Task<WebSocketFrame> CreateCloseFrameAsync(Mask mask, CloseStatusCode code, string reason)
{
return new WebSocketFrame(
Opcode.Close, mask, new PayloadData(await ((ushort)code).AppendAsync(reason).ConfigureAwait(false)));
}
internal static WebSocketFrame CreatePingFrame(Mask mask)
{
return new WebSocketFrame(Opcode.Ping, mask, new PayloadData());
}
internal static WebSocketFrame CreatePingFrame(Mask mask, byte[] data)
{
return new WebSocketFrame(Opcode.Ping, mask, new PayloadData(data));
}
internal static WebSocketFrame CreatePongFrame(Mask mask, PayloadData payload)
{
return new WebSocketFrame(Opcode.Pong, mask, payload);
}
internal static WebSocketFrame CreateWebSocketFrame(
Fin fin, Opcode opcode, Mask mask, byte[] data, bool compressed)
{
return new WebSocketFrame(fin, opcode, mask, new PayloadData(data), compressed);
}
internal static Task<WebSocketFrame> ReadAsync(Stream stream)
=> ReadAsync(stream, true);
internal static async Task<WebSocketFrame> ReadAsync(Stream stream, bool unmask)
{
var header = await stream.ReadBytesAsync(2).ConfigureAwait(false);
if (header.Length != 2)
{
throw new WebSocketException(
"The header part of a frame cannot be read from the data source.");
}
return await ReadAsync(header, stream, unmask).ConfigureAwait(false);
}
internal static async Task ReadAsync(
Stream stream, bool unmask, Action<WebSocketFrame> completed, Action<Exception> error)
{
try
{
var header = await stream.ReadBytesAsync(2).ConfigureAwait(false);
if (header.Length != 2)
{
throw new WebSocketException(
"The header part of a frame cannot be read from the data source.");
}
var frame = await ReadAsync(header, stream, unmask).ConfigureAwait(false);
completed?.Invoke(frame);
}
catch (Exception ex)
{
error.Invoke(ex);
}
}
#endregion
#region Public Methods
public IEnumerator<byte> GetEnumerator()
{
foreach (var b in ToByteArray())
yield return b;
}
public void Print(bool dumped)
{
//Console.WriteLine(dumped ? dump(this) : print(this));
}
public byte[] ToByteArray()
{
using (var buff = new MemoryStream())
{
var header = (int)_fin;
header = (header << 1) + (int)_rsv1;
header = (header << 1) + (int)_rsv2;
header = (header << 1) + (int)_rsv3;
header = (header << 4) + (int)_opcode;
header = (header << 1) + (int)_mask;
header = (header << 7) + (int)_payloadLength;
buff.Write(((ushort)header).ToByteArrayInternally(ByteOrder.Big), 0, 2);
if (_payloadLength > 125)
buff.Write(_extPayloadLength, 0, _extPayloadLength.Length);
if (_mask == Mask.Mask)
buff.Write(_maskingKey, 0, _maskingKey.Length);
if (_payloadLength > 0)
{
var payload = _payloadData.ToByteArray();
if (_payloadLength < 127)
buff.Write(payload, 0, payload.Length);
else
buff.WriteBytes(payload);
}
return buff.ToArray();
}
}
public override string ToString()
{
return BitConverter.ToString(ToByteArray());
}
#endregion
#region Explicitly Implemented Interface Members
IEnumerator IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
#endregion
}
}