//----------------------------------//
/// <summary>
/// Start a web site and server with the specified path as the root directory.
/// </summary>
public HttpSite(string path)
{
if (string.IsNullOrEmpty(path))
{
Log.Warning("No path specified for site. A path should be set.");
}
// persist and clean the path
Path = Fs.Combine(path);
// get the configuration for the web site
ManagerResources.LoadConfig(Fs.Combine(Path, "site.config"), new Act <Configuration>(OnConfiguration));
// create the authentication dictionary
Authentication = new Dictionary <string, HttpRequirement>();
// create the redirects collection
Redirects = new Dictionary <string, HttpRedirect>();
// create the cache
_cache = new Cache <string, WebResource>(Global.Megabyte * 100, r => r.Size);
_onAccessDenied = new ActionPop <HttpRequest>();
_onInvalidResource = new ActionPop <HttpRequest>();
_defaultSendOptions = new HttpSendOptions {
ContentType = "text/html"
};
}
//----------------------------------//
/// <summary>
/// Process the send options into headers for a following send operation.
/// </summary>
protected void ProcessOptions(HttpSendOptions options)
{
if (options == null)
{
SetCompression(_defaultCompression);
return;
}
// was the content type specified? set the content type
if (options.ContentType != null)
{
Headers.SetSingle(HttpResponseHeader.ContentType, options.ContentType);
}
// is the data to be cached?
if (options.CacheTime.HasValue)
{
if (options.CacheTime.Value == 0)
{
Headers.SetSingle(HttpResponseHeader.CacheControl, "no-cache, no-store");
}
else
{
Headers.SetSingle(HttpResponseHeader.CacheControl, "private, max-age=" + options.CacheTime);
}
}
// assign the status code if different
if (options.StatusCode != Headers.StatusCode)
{
Headers.StatusCode = options.StatusCode;
}
SetCompression(options.Compression);
}
/// <summary>
/// On the stream being compressed.
/// </summary>
protected void StartSendStream(MemoryStream stream, HttpSendOptions options, IAction onSent)
{
_lock.Take();
// process the options
ProcessOptions(options);
// send the headers
SendHeaders((int)stream.Length);
Log.Info("Sending stream of length '" + (int)stream.Length + "' to client " + this + ".");
// send the stream
Socket.Send(stream, (int)stream.Length);
_lock.Release();
// is the callback set? yes, run it
if (onSent != null)
{
onSent.Run();
}
// dispose of the memory stream
stream.Dispose();
}
/// <summary>
/// Send the specified web resource.
/// </summary>
public void Send(WebResource resource, HttpSendOptions options = null, IAction onSent = null)
{
Log.Info("Sending web resource " + resource + " bytes to client " + this + ".");
// get the resource stream then prepare to send the resource stream data
resource.GetStream(ActionSet.New(SendResource, (Stream)null, (Lock)null, resource, options, onSent));
}
/// <summary>
/// Send the file at the specified local path.
/// </summary>
public void SendLocal(string path, HttpSendOptions options = null, IAction onSent = null)
{
Log.Info("Sending local file '" + path + "' bytes to client " + this + ".");
// get the extension from the path
string extension;
int extensionIndex = path.LastIndexOf(Chars.Stop);
if (extensionIndex == -1)
{
extension = null;
}
else
{
extension = path.Substring(extensionIndex);
}
if (options == null)
{
options = new HttpSendOptions {
ContentType = Mime.GetType(extension)
}
}
;
// open a file stream to the resource
var fileStream = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read);
// start sending the file
StartSendStream(fileStream, (int)fileStream.Length, options, onSent);
}
/// <summary>
/// Send the specified string to the client.
/// </summary>
public unsafe void Send(string str, HttpSendOptions options = null, IAction onSent = null)
{
Log.Info("Sending string '" + str + "' to client " + this + ".");
// is the string empty? skip
if (string.IsNullOrEmpty(str))
{
return;
}
_lock.Take();
// process send options
ProcessOptions(options);
_onSent = onSent;
var buffer = BufferCache.Get(str.Length + str.Length);
int count;
// get pointers to the string and the send byte buffer
fixed(char *src = str)
fixed(byte *dst = &buffer[0])
{
// get the bytes that the string represents
count = _encoder.GetBytes(src, str.Length, dst, buffer.Length, true);
}
SendBytes(buffer, 0, count);
BufferCache.Set(buffer);
}
/// <summary>
/// Send only the headers with 0 content length.
/// </summary>
public void Send(HttpSendOptions options)
{
_lock.Take();
// process the send options
ProcessOptions(options);
SendHeaders(0);
_lock.Release();
}
/// <summary>
/// Send the specified byte collection to the client. This may take a number of buffers to complete
/// and therefore not be synchronous.
/// </summary>
public void Send(byte[] buffer, int offset, int count, HttpSendOptions options = null, IAction onSent = null)
{
_lock.Take();
// process the options
ProcessOptions(options);
_onSent = onSent;
// perform the send
SendBytes(buffer, offset, count);
}
/// <summary>
/// Send the specified element to the client.
/// </summary>
public unsafe void Send(Element element, bool buildStyle = true, HttpSendOptions options = null, IAction onSent = null)
{
Log.Info("Sending element '" + element + "' to client " + this + ".");
if (buildStyle)
{
// build the style
var style = element.FindChild("style");
style.ContentString = element.BuildCss();
element.EncodeContent = false;
}
// build the element into a string
string str =
"<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 4.01//EN\" \"http://www.w3.org/TR/html4/strict.dtd\">" +
element.Build();
_lock.Take();
// have the options been specified? yes, process them
if (options == null || options.ContentType == null)
{
Headers[HttpResponseHeader.ContentType] = "text/html; charset=UTF-8";
}
ProcessOptions(options);
_onSent = onSent;
// resize buffer as required
var buffer = BufferCache.Get(str.Length + str.Length);
// get pointers to the string and the send byte buffer
int count;
fixed(char *src = str)
fixed(byte *dst = &buffer[0])
{
// get the bytes that the string represents
count = _encoder.GetBytes(src, str.Length, dst, buffer.Length, true);
}
// send the bytes
SendBytes(buffer, 0, count);
BufferCache.Set(buffer);
}
/// <summary>
/// Start sending the stream. The client is locked until the stream is complete.
/// </summary>
protected void StartSendStream(Stream stream, int length, HttpSendOptions options = null, IAction onSent = null)
{
// does the buffer need to be compressed?
if (options != null && options.Compression == DecompressionMethods.None ||
_defaultCompression == DecompressionMethods.None)
{
// no, take the send lock
_lock.Take();
// process the options
ProcessOptions(options);
// send the header
SendHeaders(length);
Log.Info("Sending stream of length '" + length + "' to client " + this + ".");
// send the stream
Socket.Send(stream, length);
_lock.Release();
// is the callback set? yes, run it
if (onSent != null)
{
onSent.Run();
}
}
else
{
// yes, compress the bytes
StreamHelper.Compress(new Act <MemoryStream, HttpSendOptions, IAction>(StartSendStream, null, options, onSent),
options == null ? _defaultCompression : options.Compression,
System.IO.Compression.CompressionLevel.Fastest, stream, length, false);
}
}
/// <summary>
/// Begin sending the stream of a web resource and prepare to release the resource lock on completion.
/// </summary>
protected void SendResource(Stream stream, Lock resourceLock, WebResource resource, HttpSendOptions options, IAction onSent)
{
// was the stream retrieved?
if (stream == null)
{
// no, unlock the resource
resourceLock.Release();
// callback
_client.OnErrorRoll.Run(new Exception("A resource stream '" + resource.FullPath + "' was unable to be resolved."));
return;
}
_lock.Take();
if (onSent == null)
{
_onSent = new ActionSet(resourceLock.Release);
}
else
{
_onSent = new ActionPair(resourceLock.Release, onSent);
}
// set the content type
ProcessOptions(options);
if (options == null)
{
Headers[HttpResponseHeader.ContentType] = resource.MimeType;
}
int length = resource.Size == -1 ? (int)stream.Length : (int)resource.Size;
// start sending the stream
StartSendStream(stream, length, resource);
}
/// <summary>
/// Send the specified stream, optionally with a byte length. This method is
/// asynchronous and will close the stream on completion.
/// </summary>
public void Send(Stream stream, int length = -1, HttpSendOptions options = null, IAction onSent = null)
{
// start sending the stream
StartSendStream(stream, length == -1 ? (int)(stream.Length - stream.Position) : length, options, onSent);
}
