public void Start()
{
var Root = FileNameHandling.GetDirectoryPathWithTailingSeparator(FileNameHandling.GetAbsolutePath(PhysicalPath, Environment.CurrentDirectory));
var Indices = this.Indices;
var MimeTypes = new Dictionary <String, String>(StringComparer.OrdinalIgnoreCase);
MimeTypes.Add("htm", "text/html");
MimeTypes.Add("html", "text/html");
MimeTypes.Add("shtml", "text/html");
MimeTypes.Add("xml", "text/xml");
MimeTypes.Add("css", "text/css");
MimeTypes.Add("js", "application/x-javascript");
MimeTypes.Add("txt", "text/plain");
MimeTypes.Add("gif", "image/gif");
MimeTypes.Add("jpg", "image/jpeg");
MimeTypes.Add("jpeg", "image/jpeg");
MimeTypes.Add("png", "image/png");
MimeTypes.Add("tif", "image/tiff");
MimeTypes.Add("tiff", "image/tiff");
MimeTypes.Add("ico", "image/x-icon");
MimeTypes.Add("mp3", "audio/mpeg");
MimeTypes.Add("wav", "audio/wav");
MimeTypes.Add("mid", "audio/midi");
MimeTypes.Add("midi", "audio/midi");
Func <String, String> GetMimeType = Extension =>
{
if (MimeTypes.ContainsKey(Extension))
{
return(MimeTypes[Extension]);
}
return("application/octet-stream");
};
Func <String, Int64, Optional <KeyValuePair <Int64, Int64> > > TryGetRange = (RangeStrs, FileLength) =>
{
// http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
Int64 Start = 0;
Int64 Length = FileLength;
var RangeStrsTrimmed = RangeStrs.Trim(' ');
if (RangeStrsTrimmed.StartsWith("bytes="))
{
RangeStrsTrimmed = RangeStrsTrimmed.Substring("bytes=".Length);
}
else
{
return(Optional <KeyValuePair <Int64, Int64> > .Empty);
}
var RangeStrsSplitted = RangeStrsTrimmed.Split(',');
if (RangeStrsSplitted.Length != 1)
{
return(Optional <KeyValuePair <Int64, Int64> > .Empty);
}
var Parts = RangeStrsSplitted.Single().Trim(' ').Split('-').Select(p => p.Trim(' ')).ToArray();
if (Parts.Length != 2)
{
return(Optional <KeyValuePair <Int64, Int64> > .Empty);
}
if (Parts[0] == "")
{
// 不支持suffix-byte-range-spec = "-" suffix-length
return(Optional <KeyValuePair <Int64, Int64> > .Empty);
}
if (!Int64.TryParse(Parts[0], out Start))
{
return(Optional <KeyValuePair <Int64, Int64> > .Empty);
}
if ((Start < 0) || (Start > FileLength))
{
return(Optional <KeyValuePair <Int64, Int64> > .Empty);
}
if (Parts[1] == "")
{
Length = FileLength - Start;
}
else
{
Int64 End;
if (!Int64.TryParse(Parts[1], out End))
{
return(Optional <KeyValuePair <Int64, Int64> > .Empty);
}
if (End < Start)
{
return(Optional <KeyValuePair <Int64, Int64> > .Empty);
}
Length = Math.Min(End + 1 - Start, FileLength - Start);
}
return(new KeyValuePair <Int64, Int64>(Start, Length));
};
Action <String, HttpListenerContext, IPEndPoint, Action, Action <Exception> > RequestHandler = (RelativePath, a, e, OnSuccess, OnFailure) =>
{
if (a.Request.ContentLength64 > 0)
{
a.Response.StatusCode = 400;
OnSuccess();
return;
}
if (RelativePathTranslator != null)
{
var oRelativePath = RelativePathTranslator(RelativePath);
if (oRelativePath.OnNone)
{
a.Response.StatusCode = 404;
OnSuccess();
return;
}
RelativePath = oRelativePath.Value;
}
var Path = FileNameHandling.GetAbsolutePath(RelativePath, Root);
if ((RelativePath != "") && !Path.StartsWith(Root))
{
a.Response.StatusCode = 400;
OnSuccess();
return;
}
if (!File.Exists(Path))
{
var Found = false;
var UnescapedPath = Uri.UnescapeDataString(Path);
if (File.Exists(UnescapedPath))
{
Path = UnescapedPath;
Found = true;
}
if (!Found)
{
foreach (var Index in Indices)
{
var IndexPath = FileNameHandling.GetPath(Path, Index);
if (File.Exists(IndexPath))
{
Path = IndexPath;
Found = true;
break;
}
}
foreach (var Index in Indices)
{
var IndexPath = FileNameHandling.GetPath(UnescapedPath, Index);
if (File.Exists(IndexPath))
{
Path = IndexPath;
Found = true;
break;
}
}
}
if (!Found)
{
a.Response.StatusCode = 404;
OnSuccess();
return;
}
}
if (!Path.StartsWith(Root))
{
a.Response.StatusCode = 400;
OnSuccess();
return;
}
var Buffer = new Byte[512 * 1024];
using (var fs = Streams.OpenReadable(Path))
{
var LastWriteTime = File.GetLastWriteTimeUtc(Path);
var LastWriteTimeStr = LastWriteTime.ToString("R");
var ETag = "\"" + Times.DateTimeUtcToString(LastWriteTime) + "\"";
var IfModifiedSinceStr = a.Request.Headers["If-Modified-Since"];
if ((IfModifiedSinceStr != null) && (LastWriteTimeStr == IfModifiedSinceStr))
{
a.Response.StatusCode = 304;
OnSuccess();
return;
}
var oRange = Optional <KeyValuePair <Int64, Int64> > .Empty;
var IfRangeStr = a.Request.Headers["If-Range"];
if ((IfRangeStr == null) || (ETag == IfRangeStr) || (LastWriteTimeStr == IfRangeStr))
{
var RangeStrs = a.Request.Headers["Range"];
if (RangeStrs != null)
{
oRange = TryGetRange(RangeStrs, fs.Length);
}
}
Int64 Start;
Int64 Length;
if (oRange.OnSome)
{
var Range = oRange.Value;
Start = Range.Key;
Length = Range.Value;
a.Response.StatusCode = 206;
a.Response.Headers.Add("Content-Range", "bytes {0}-{1}/{2}".Formats(Range.Key, Range.Key + Range.Value - 1, fs.Length));
}
else
{
Start = 0;
Length = fs.Length;
a.Response.StatusCode = 200;
}
a.Response.ContentLength64 = Length;
a.Response.ContentType = GetMimeType(FileNameHandling.GetExtendedFileName(Path));
a.Response.Headers.Add("Accept-Ranges", "bytes");
a.Response.Headers.Add("Last-Modified", LastWriteTimeStr);
a.Response.Headers.Add("ETag", ETag);
try
{
using (var ros = a.Response.OutputStream)
{
var Count = (Length + Buffer.Length - 1) / Buffer.Length;
fs.Position = Start;
for (int k = 0; k < Count; k += 1)
{
var ChunkSize = (int)(Math.Min(Buffer.Length, Length - Buffer.Length * k));
fs.Read(Buffer, 0, ChunkSize);
ros.Write(Buffer, 0, ChunkSize);
}
}
}
catch (System.Net.HttpListenerException)
{
}
}
OnSuccess();
};
Inner = new ExternalHttpServer(ServerContext, RequestHandler, QueueUserWorkItem, 8 * 1024);
Inner.Bindings = Bindings;
Inner.SessionIdleTimeout = SessionIdleTimeout;
Inner.MaxConnections = MaxConnections;
Inner.MaxConnectionsPerIP = MaxConnectionsPerIP;
Inner.MaxBadCommands = MaxBadCommands;
Inner.MaxUnauthenticatedPerIP = MaxUnauthenticatedPerIP;
Inner.ServiceVirtualPath = ServiceVirtualPath;
Inner.Start();
}
