void WriteContextResponse(HttpContextAdapter adapter, int statusCode, string contentType, string payload, System.Text.Encoding encoding)
{
try
{
if (null == adapter)
{
return;
}
if (null == encoding)
{
encoding = Encoding;
}
if (null == contentType)
{
contentType = "text/plain";
}
adapter.ResponseContentType = contentType;
byte[] binary = encoding.GetBytes(payload);
adapter.OutputStream.Write(binary, 0, binary.Length);
adapter.OutputStream.Close();
//adapter.End();
}
catch
{
return;
}
}
void ProcessJavascript(Guid loginToken, HttpContextAdapter adapter)
{
//Construct a response.
string responseString = System.IO.File.ReadAllText(AppDomain.CurrentDomain.BaseDirectory + @"\resources\javascript\Classes\WebServerAPI.js").Replace("'<ServerObject>'", ToJSON());
//Write response
WriteContextResponse(adapter, 200, "text/javascript", responseString, Encoding);
}
/// <summary>
/// Ends all ListenRequests
/// </summary>
internal void EndListenRequest()
{
lock (this)
{
EndRequest(HttpContext);
HttpContext = null;
}
}
void WriteContextResponseXml(HttpContextAdapter adapter, double xmlVersion, string rootNode, string xmlBody)
{
if (adapter == null)
{
return;
}
//Write the response
WriteContextResponse(adapter, 200, "text/xml", CreateXmlPage(adapter.RemoteIPAddress.ToString(), xmlVersion, Encoding, rootNode, xmlBody), Encoding);
}
void WriteContextResponseHtml(HttpContextAdapter adapter, int statusCode, string responseHead, string responseTitle, string responseBody)
{
adapter.ResponseStatusCode = statusCode;
adapter.ResponseContentType = "text/html";
byte[] binary = Encoding.GetBytes(CreateHtmlPage(adapter.RemoteIPAddress.ToString(), responseHead, responseTitle, responseBody));
adapter.OutputStream.Write(binary, 0, binary.Length);
adapter.OutputStream.Close();
//adapter.End();
}
/// <summary>
/// Accepts the Request
/// </summary>
/// <param name="state">HttpContext</param>
internal void WorkerFunction(object state)
{
//If the state is not present then return
if (null == state)
{
return;
}
//Create an HttpContext from the state
HttpContextAdapter adapter = new HttpContextAdapter(state);
//get the remoteIp
IPAddress remoteIp = adapter.RemoteIPAddress;
//If the RemoteEndPoint is Banned then Handle this scenario
if (m_Banned.Contains(remoteIp))
{
ProcessBanned(adapter);
}
else
{
try
{
//Get the loginToken from the request
Guid loginToken = adapter.GetLoginToken(m_Identifier);
if (loginToken.Equals(Guid.Empty))
{
throw new ArgumentException("loginToken");
}
//Determine the process
string process = Parts.SingleOrDefault(p => adapter.RequestUri.AbsoluteUri.Contains(p));
//Process the request according to the Determined ordinal
switch (process)
{
default: ProcessOther(loginToken, adapter); break;
case "Listen": ProcessListen(loginToken, adapter); break;
case "Send": ProcessSend(loginToken, adapter); break;
case "Info": ProcessInfo(loginToken, adapter); break;
case "Status": ProcessStatus(loginToken, adapter); break;
case "Javascript": ProcessJavascript(loginToken, adapter); break;
}
}
catch
{
//There was an malformed loginToken
ProcessNoSession(adapter);
}
}
//Poll workers and End the Listen Requests which have timed out from the Worker
PollClients(true);
}
//All these methods are candidates to me be moved to the adapter
void WriteContextResponseJson(HttpContextAdapter adapter, string functionName, string functionCode, string functionArguments)
{
//If there is no context then there is nothing we can do
if (adapter == null)
{
return;
}
//Write response
WriteContextResponse(adapter, 200, "text/javascript", CreateJavascriptFunction(functionName, functionCode, functionArguments), Encoding);
}
internal void BeginListenRequest(HttpContextAdapter context)
{
//Disconnect the current client
EndListenRequest();
//Increment state
ListenId = Interlocked.Increment(ref ListenId);
//Store the new listen
HttpContext = context;
HttpContext.BufferOutput = true;
HttpContext.ResponseContentType = "text/json";
LastListen = DateTime.Now;
}
void ProcessOther(Guid loginToken, HttpContextAdapter adapter)
{
if (null == adapter)
{
return;
}
//Determine if the Uri matches a page in the custom sites
string page = m_Sites.Keys.SingleOrDefault(p => adapter.RequestUri.AbsoluteUri.Contains(p));
//If the page is not null then invoke the handler
if (page != null)
{
//Get the handler Delegate from the Sites Dictionary
Delegate handler = m_Sites[page];
//If there is handler
if (handler != null)
{
//If the Delegate is a Relay or MessageHandler then Invoke it
if (handler is Relay)
{
((Relay)handler).Invoke(loginToken, adapter);
}
else if (handler is MessageHandler)
{
((MessageHandler)handler).Invoke(loginToken, adapter, null);
}
else
{
try
{
//The handler is a Delegate, try to Invoke it
handler.DynamicInvoke(new object[] { loginToken, adapter });
}
catch
{
//Throw the exception
throw;
}
}
}
}
//Otherwise indicate the process is unknown
ProcessUnknown(loginToken, adapter);
}
void ProcessDisconnect(Guid loginToken, HttpContextAdapter adapter)
{
WebClient client;
//If we have a client
if (m_Clients.TryGetValue(loginToken, out client))
{
//Inform the client of the Disconnect
client.Que(CreateEnterExitMessage(client, true));
//Push any message data at this time on the Response
client.EndRequest(adapter);
//Remove the Client from the Server
RemoveClient(ref client);
}
else
{
//Indicate the client is not connected
ProcessNoSession(adapter);
}
}
void ProcessListen(Guid loginToken, HttpContextAdapter adapter)
{
WebClient client;
//If we have a client
if (m_Clients.TryGetValue(loginToken, out client))
{
//Being the ListenRequest
client.BeginListenRequest(adapter);
}
else
{
//Create a client and being the ListenRequest
client = new WebClient(loginToken, this);
//Assign the application UserData
client.UserData = new UserWrapper(client);
//Ensure only one client is added in a listen
lock (m_Clients)
{
//Add the client o the m_Clients Dictionary
m_Clients.Add(client.LoginToken, client);
}
//Give the client the most up to date WebServerInfo
client.Que(new WebMessage("webServerInfo", ToJSON()));
//Instuct the client he is connected
client.Que(CreateEnterExitMessage(client, false));
//Begin his listenRequest
client.BeginListenRequest(adapter);
//Give the connected users to all users
SendAll(CreateUserList());
}
}
void ProcessInfo(Guid loginToken, HttpContextAdapter adapter)
{
//Construct a response.
WebMessage message = new WebMessage("webServerInfo", ToJSON());
//If we have a client then process the request as a message
WebClient client;
if (m_Clients.TryGetValue(loginToken, out client))
{
//Que the Information to the client
client.Que(message);
//End the request on the currentContext
client.EndRequest(adapter);
}
else
{
//Write response
WriteContextResponse(adapter, 200, "text/html", message.ToJSON(), Encoding);
//WriteContextResponse(context, message.ToJSON(), "You have recieved the Server Information via JSON RPC, Please see the HEAD of this response!");
}
}
internal void EndRequest(HttpContextAdapter adapter)
{
if (adapter == null)
{
return;
}
//Ensure there is only one thread working on this adapter
lock (adapter)
{
//If there are messages to send, send them
if (Messages.Count > 0)
{
//Empty the volatile messages list into an array
WebMessage[] messages = Messages.ToArray();
Messages.Clear();
//Get the server encoding
Encoding encoding = Server.Encoding;
try
{
//FrameStart
adapter.OutputStream.WriteByte(encoding.GetBytes("[")[0]);
}
catch
{
//Reque the messages
Messages.AddRange(messages);
goto EndRequest;
}
byte[] binary;
//Get all of the messages except the last
if (messages.Length > 1)
{
//Iterate the array appending the JSON Object to the buffer
foreach (WebMessage message in messages.Take(Math.Max(1, messages.Length - 2)))
{
try
{
//Attempt to write the message
binary = encoding.GetBytes(message.ToJSON() + ',');
adapter.OutputStream.Write(binary, 0, binary.Length);
}
catch
{
//Reque the messages
Messages.Add(message);
continue;
}
}
}
//Get the last Message
WebMessage lastMessage = messages.Skip(messages.Length - 1).Take(1).Single();
try
{
//Attempt to write the lastMessage and FrameEnd
binary = encoding.GetBytes(lastMessage.ToJSON() + ']');
adapter.OutputStream.Write(binary, 0, binary.Length);
}
catch
{
//Reque the message
Messages.Add(lastMessage);
goto EndRequest;
}
}
EndRequest:
//End the current listen
try
{
adapter.OutputStream.Flush();
adapter.OutputStream.Close();
adapter.Close();
adapter.End();
}
catch
{
return;
}
}
}
void ProcessSend(Guid loginToken, HttpContextAdapter adapter)
{
WebClient client;
//If we have a client process the Send
if (m_Clients.TryGetValue(loginToken, out client))
{
//Get the body data
string body = adapter.GetRequestBody();
//If there is body data decode and handle the incoming message
if (!string.IsNullOrEmpty(body))
{
try
{
//Use JavaScriptSerializer from System.Web.Extensions to Decode Message
Dictionary <string, object> message = Utilities.Serializer.DeserializeObject(body) as Dictionary <string, object>;
if (message != null)
{
//If we have a message determine the command
object value;
if (message.TryGetValue((String)message["Command"], out value))
{
//If we have a command attempt to process
string command = (String)value;
if (!string.IsNullOrEmpty(command))
{
//Get the payload
object payload;
Dictionary <string, object> Payload = null;
//If there was a payload unbox it
if (message.TryGetValue("Payload", out payload))
{
Payload = payload as Dictionary <string, object>;
}
//Determine hook and process
switch (command)
{
case "sendAll":
{
SendAll(new WebMessage(command, (String)message["Payload"]));
return;
}
case "queAll":
{
QueAll(new WebMessage(command, (String)message["Payload"]));
return;
}
case "sendToKey":
{
SendMessage((Guid)Payload["PublicKey"], new WebMessage(command, (String)Payload["Message"]));
return;
}
case "queToKey":
{
QueMessage((Guid)Payload["PublicKey"], new WebMessage(command, (String)Payload["Message"]));
return;
}
case "sendToChat":
{
break;
}
case "api":
case "javascript":
{
ProcessJavascript(loginToken, adapter);
return;
}
case "info":
case "refresh":
{
ProcessInfo(loginToken, adapter);
return;
}
case "status":
{
ProcessStatus(loginToken, adapter);
return;
}
case "push":
case "serverPush":
{
ProcessServerPush(loginToken, adapter);
return;
}
default:
{
ProcessUnknown(loginToken, adapter);
return;
}
}
}
}
else
{
ProcessOther(loginToken, adapter);
return;
}
}
}
catch
{
//Do nothing;
}
}
//Push any message data at this time on the Response
client.EndRequest(adapter);
}
else
{
//Indicate the client is not connected
ProcessNoSession(adapter);
}
}
private void ProcessServerPush(Guid loginToken, HttpContextAdapter adapter)
{
throw new NotImplementedException();
}
void ProcessNoSession(HttpContextAdapter context)
{
//Write response
WriteContextResponseHtml(context, 500, null, "Identification Error", string.Format("Sorry, Neither a HttpHeader or Cookie named '{0}' could be found that contained valid data identifying the session, please ensure the necessary data was passed in the request and try again.", m_Identifier));
}
void ProcessBanned(HttpContextAdapter context)
{
//Write response
WriteContextResponseHtml(context, 500, null, "RemoteAddress Banned", "Sorry your IPAddress have been banned by the Administrator.");
}
void ProcessUnknown(Guid loginToken, HttpContextAdapter adapter)
{
//Write response with updated serverInfo
WriteContextResponseHtml(adapter, 404, CreateJavascriptFunctionBlock(Anonymous, ToJSON(), null), "Error - 404", "The page you requested could not found, please try again!");//+ context.Request.Url.AbsoluteUri
}
void ProcessStatus(Guid loginToken, HttpContextAdapter context)
{
//TODO
}
