private void ConnectServer()
{
Task.Factory.StartNew(async () =>
{
try
{
DataReader stream = new DataReader(this._socket.InputStream);
// Read HTTP request line.
string startLine = await this.ReadLine(stream);
if (startLine == null)
{
throw new Exception("Cannot read HTTP request start line");
}
Http.RequestLine requestLine = new Http.RequestLine(startLine);
this._uri = new Uri(requestLine.RequestURI); // can be checked in
// onConnect()
// Read HTTP response headers
Dictionary<string, string> map = new Dictionary<string, string>();
string line;
while ((line = await this.ReadLine(stream)) != null && line.Length > 0)
{
Http.Header header = new Http.Header(line);
map.Add(header.HeaderName.ToLower(), header.HeaderValue);
}
string value = map["sec-websocket-version"];
if (!"13".Equals(value))
throw new IOException("wrong Sec-WebSocket-Version");
string key = map["sec-websocket-key"];
if (key == null)
throw new IOException("missed Sec-WebSocket-Key");
string accept = CreateAccept(key);
string upgrade = map["upgrade"];
if (upgrade == null || !upgrade.Equals("websocket", StringComparison.OrdinalIgnoreCase))
throw new IOException("wrong Upgrade");
string connection = map["connection"];
if (connection == null || !connection.Equals("upgrade", StringComparison.OrdinalIgnoreCase))
throw new IOException("wrong Connection");
// Host and Origin can be checked later in onConnect() callback.
this._host = map["host"];
if (this._host == null)
throw new IOException("Missed 'Host' header");
this._origin = map["origin"];
if (this._origin == null)
throw new IOException("Missed 'Origin' header");
// Some naive protocol selection.
string protocols = map["sec-websocket-protocol"];
string selectedProtocol = null;
if (protocols != null && protocols.Contains("chat"))
selectedProtocol = "chat";
DataWriter writer = new DataWriter(this._socket.OutputStream);
writer.WriteString("HTTP/1.1 101 Switching Protocols\r\n");
writer.WriteString("Upgrade: websocket\r\n");
writer.WriteString("Connection: Upgrade\r\n");
writer.WriteString("Sec-WebSocket-Accept: " + accept + "\r\n");
if (selectedProtocol != null)
writer.WriteString("Sec-WebSocket-Protocol: " + selectedProtocol + "\r\n");
writer.WriteString("\r\n");
await writer.FlushAsync();
if (this.Opened != null)
{
this.Opened(this, EventArgs.Empty);
}
// Read & process frame
for (; ; )
{
FrameParser.Frame frame = await FrameParser.ReadFrame(stream);
await this.ProcessIncomingFrame(frame);
}
}
catch (IOException ex)
{
if (this.Closed != null)
{
this.Closed(this, new WebSocketClosedEventArgs(0, "EOF"));
}
}
catch (Exception ex)
{
if (this.Closed != null)
{
this.Closed(this, new WebSocketClosedEventArgs(0, "Exception"));
}
}
finally
{
this.Disconnect();
}
});
}
private void ConnectServer()
{
Task.Factory.StartNew(async() =>
{
try
{
DataReader stream = new DataReader(this._socket.InputStream);
// Read HTTP request line.
string startLine = await this.ReadLine(stream);
if (startLine == null)
{
throw new Exception("Cannot read HTTP request start line");
}
Http.RequestLine requestLine = new Http.RequestLine(startLine);
this._uri = new Uri(requestLine.RequestURI); // can be checked in
// onConnect()
// Read HTTP response headers
Dictionary <string, string> map = new Dictionary <string, string>();
string line;
while ((line = await this.ReadLine(stream)) != null && line.Length > 0)
{
Http.Header header = new Http.Header(line);
map.Add(header.HeaderName.ToLower(), header.HeaderValue);
}
string value = map["sec-websocket-version"];
if (!"13".Equals(value))
{
throw new IOException("wrong Sec-WebSocket-Version");
}
string key = map["sec-websocket-key"];
if (key == null)
{
throw new IOException("missed Sec-WebSocket-Key");
}
string accept = WebSocketHelper.CreateAccept(key);
string upgrade = map["upgrade"];
if (upgrade == null || !upgrade.Equals("websocket", StringComparison.OrdinalIgnoreCase))
{
throw new IOException("wrong Upgrade");
}
string connection = map["connection"];
if (connection == null || !connection.Equals("upgrade", StringComparison.OrdinalIgnoreCase))
{
throw new IOException("wrong Connection");
}
// Host and Origin can be checked later in onConnect() callback.
this._host = map["host"];
if (this._host == null)
{
throw new IOException("Missed 'Host' header");
}
this._origin = map["origin"];
if (this._origin == null)
{
throw new IOException("Missed 'Origin' header");
}
// Some naive protocol selection.
string protocols = map["sec-websocket-protocol"];
string selectedProtocol = null;
if (protocols != null && protocols.Contains("chat"))
{
selectedProtocol = "chat";
}
DataWriter writer = new DataWriter(this._socket.OutputStream);
writer.WriteString("HTTP/1.1 101 Switching Protocols\r\n");
writer.WriteString("Upgrade: websocket\r\n");
writer.WriteString("Connection: Upgrade\r\n");
writer.WriteString("Sec-WebSocket-Accept: " + accept + "\r\n");
if (selectedProtocol != null)
{
writer.WriteString("Sec-WebSocket-Protocol: " + selectedProtocol + "\r\n");
}
writer.WriteString("\r\n");
await writer.FlushAsync();
if (this.Opened != null)
{
this.Opened(this, EventArgs.Empty);
}
// Read & process frame
for (;;)
{
FrameParser.Frame frame = await FrameParser.ReadFrame(stream);
await this.ProcessIncomingFrame(frame);
}
}
catch (IOException ex)
{
if (this.Closed != null)
{
this.Closed(this, new WebSocketClosedEventArgs(0, "EOF"));
}
}
catch (Exception ex)
{
if (this.Closed != null)
{
this.Closed(this, new WebSocketClosedEventArgs(0, "Exception"));
}
}
finally
{
this.Disconnect();
}
});
}