public void Start()
{
Socket sock = Sockets.CreateTCPSocket("167.205.66.53", 2345);
client = new ClientInfo(sock, false); // Don't start receiving yet
client.MessageType = MessageType.CodeAndLength;
client.OnReadMessage += new ConnectionReadMessage(ReadMessage);
client.BeginReceive();
mcConnect = true;
}
void ReadMessage(ClientInfo ci, uint code, byte[] buf, int len)
{
if (code == ClientInfo.ImageCodeUpper)
{
Console.WriteLine("Message length: " + len + ", code " + code.ToString("X8") + ", content:");
bu = new byte[len];
Array.Copy(buf, bu, len);
//Console.WriteLine(" " + ByteBuilder.FormatParameter(new Parameter(ba, ParameterType.Byte)));
updatedUpper = true;
//OnImageRetrieved(EventArgs.Empty);
}
if (code == ClientInfo.ImageCodeLower)
{
Console.WriteLine("Message length: " + len + ", code " + code.ToString("X8") + ", content:");
bl = new byte[len];
Array.Copy(buf, bl, len);
//Console.WriteLine(" " + ByteBuilder.FormatParameter(new Parameter(ba, ParameterType.Byte)));
updatedLower = true;
//OnImageRetrieved(EventArgs.Empty);
}
}
internal void ClientClosed(ClientInfo ci)
{
lock (SyncRoot) clients.Remove(ci.ID);
}
internal ClientData(ClientInfo ci)
{
req.From = ((IPEndPoint)ci.Socket.RemoteEndPoint).Address;
}
void SendResponse(ClientInfo ci, HttpRequest req, HttpResponse resp, bool close)
{
#if DEBUG
Console.WriteLine("Response: "+resp.ReturnCode + Responses[resp.ReturnCode]);
#endif
ByteBuilder bb = new ByteBuilder();
bb.Add(Encoding.UTF8.GetBytes("HTTP/1.1 " + resp.ReturnCode + " " + Responses[resp.ReturnCode] +
"\r\nDate: "+DateTime.Now.ToString("R")+
"\r\nServer: RedCoronaEmbedded/1.0"+
"\r\nConnection: "+(close ? "close" : "Keep-Alive")));
bb.Add(Encoding.UTF8.GetBytes("\r\nContent-Encoding: " + (resp.Encoding == null ? "utf-8" : resp.Encoding)));
if (resp.RawContent == null)
bb.Add(Encoding.UTF8.GetBytes("\r\nContent-Length: " + resp.Content.Length));
else
bb.Add(Encoding.UTF8.GetBytes("\r\nContent-Length: " + resp.RawContent.Length));
if(resp.ContentType != null)
bb.Add(Encoding.UTF8.GetBytes("\r\nContent-Type: "+resp.ContentType));
if(req.Session != null) bb.Add(Encoding.UTF8.GetBytes("\r\nSet-Cookie: _sessid="+req.Session.ID+"; path=/"));
foreach(KeyValuePair<string, string> de in resp.Header) bb.Add(Encoding.UTF8.GetBytes("\r\n" + de.Key + ": " + de.Value));
bb.Add(Encoding.UTF8.GetBytes("\r\n\r\n")); // End of header
if(resp.RawContent != null) bb.Add(resp.RawContent);
else bb.Add(Encoding.UTF8.GetBytes(resp.Content));
ci.Send(bb.Read(0, bb.Length));
#if DEBUG
Console.WriteLine("** SENDING\n"+resp.Content);
#endif
if(close) ci.Close();
}
void DoProcess(ClientInfo ci)
{
ClientData data = (ClientData)ci.Data;
string sessid;
if(data.req.Cookies.TryGetValue("_sessid", out sessid))
data.req.Session = (Session)sessions[sessid];
bool closed = Process(ci, data.req);
data.state = closed ? ClientState.Closed : ClientState.Header;
data.read = 0;
HttpRequest oldreq = data.req;
data.req = new HttpRequest(); // Once processed, the connection will be used for a new request
data.req.Session = oldreq.Session; // ... but session is persisted
data.req.From = ((IPEndPoint)ci.Socket.RemoteEndPoint).Address;
}
bool ClientConnect(Server serv, ClientInfo new_client)
{
new_client.Delimiter = "\n";
new_client.OnRead += new ConnectionRead(ReadData);
return true; // allow this connection
}
bool ClientConnect(Server serv, ClientInfo new_client)
{
new_client.MessageType = MessageType.CodeAndLength;
new_client.OnReadMessage += new ConnectionReadMessage(ReadMessage);
return true; // allow this connection
}
protected virtual bool Process(ClientInfo ci, HttpRequest req)
{
HttpResponse resp = new HttpResponse();
resp.Url = req.Url;
for(int i = handlers.Count - 1; i >= 0; i--){
IHttpHandler handler = (IHttpHandler)handlers[i];
if(handler.Process(this, req, resp)){
SendResponse(ci, req, resp, resp.ReturnCode != 200);
return resp.ReturnCode != 200;
}
}
return true;
}
static void ReadMessage(ClientInfo ci, uint code, byte[] buf, int len)
{
if (code == ClientInfo.CommandCode)
{
Console.WriteLine("Message length, code " + code.ToString("X8") + ", content:"+buf.ToString());
messageCommand(System.Text.Encoding.UTF8.GetString(buf, 0, len));
ci.SendMessage(ClientInfo.StringCode, Encoding.UTF8.GetBytes(code.ToString("X8")+" success"));
}
else if (code == ClientInfo.VoiceCode)
{
Console.WriteLine("Message length, code " + code.ToString("X8") + ", content:" + buf.ToString());
messageVoice(System.Text.Encoding.UTF8.GetString(buf, 0, len));
ci.SendMessage(ClientInfo.VoiceCode, Encoding.UTF8.GetBytes(code.ToString("X8") + " success"));
}
else if (code == ClientInfo.moveToCode)
{
Console.WriteLine("Message length, code " + code.ToString("X8") + ", content:" + buf.ToString());
string[] value = System.Text.Encoding.UTF8.GetString(buf, 0, len).Split(',');
naoMotion.moveTo(float.Parse(value[0]), float.Parse(value[1]), float.Parse(value[2]));
ci.SendMessage(ClientInfo.VoiceCode, Encoding.UTF8.GetBytes(code.ToString("X8") + " success"));
}
else if (code == ClientInfo.movePeonCode)
{
Console.WriteLine("Message length, code " + code.ToString("X8") + ", content:" + buf.ToString());
string[] value = System.Text.Encoding.UTF8.GetString(buf, 0, len).Split(',');
naoMotion.movePeon(float.Parse(value[0]), float.Parse(value[1]), float.Parse(value[2]), float.Parse(value[3]), float.Parse(value[4]), float.Parse(value[5]));
ci.SendMessage(ClientInfo.movePeonCode, Encoding.UTF8.GetBytes(code.ToString("X8") + " success"));
}
}
void ReadData(ClientInfo ci, uint code, byte[] bytes, int len)
{
Console.WriteLine("Received " + len + " bytes: " +
System.Text.Encoding.UTF8.GetString(bytes, 0, len));
}
public void Start()
{
Socket sock = Sockets.CreateTCPSocket("localhost", 2345);
client = new ClientInfo(sock, false); // Don't start receiving yet
client.MessageType = MessageType.Length;
client.OnReadMessage += new ConnectionReadMessage(ReadData);
client.BeginReceive();
}
void ReadData(ClientInfo ci, String text)
{
Console.WriteLine("Received text message: " + text);
}
void Start()
{
Socket sock = Sockets.CreateTCPSocket("localhost", 2345);
client = new ClientInfo(sock, false); // Don't start receiving yet
client.OnRead += new ConnectionRead(ReadData);
client.Delimiter = "\n"; // this is the default, shown for illustration
client.BeginReceive();
}
void Start()
{
Socket sock = Sockets.CreateTCPSocket("localhost", 2345);
client = new ClientInfo(sock, false); // Don't start receiving yet
client.OnReadBytes += new ConnectionReadBytes(ReadData);
client.BeginReceive();
}
// ASYNC CALLBACK CODE
void AcceptCallback(IAsyncResult ar)
{
try
{
Socket server = (Socket)ar.AsyncState;
Socket cs = server.EndAccept(ar);
// Start the thing listening again
server.BeginAccept(new AsyncCallback(AcceptCallback), server);
ClientInfo c = new ClientInfo(cs, null, null, ClientDirection.Both, false);
c.server = this;
// Allow the new client to be rejected by the application
if (Connect != null)
{
if (!Connect(this, c))
{
// Rejected
cs.Close();
return;
}
}
// Initiate key exchange
c.EncryptionType = encType;
switch (encType)
{
case EncryptionType.None: KeyExchangeComplete(c); break;
case EncryptionType.ServerKey:
c.encKey = GetSymmetricKey();
byte[] key = ClientInfo.GetLengthEncodedVector(c.encKey);
cs.Send(key);
#if DEBUG
Console.Write(c.ID + " Sent key: "); ClientInfo.LogBytes(key, key.Length);
#endif
c.MakeEncoders();
KeyExchangeComplete(c);
break;
case EncryptionType.ServerRSAClientKey:
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
RSAParameters p = rsa.ExportParameters(true);
cs.Send(ClientInfo.GetLengthEncodedVector(p.Modulus));
cs.Send(ClientInfo.GetLengthEncodedVector(p.Exponent));
c.encParams = p;
break;
default: throw new ArgumentException("Unknown or unsupported encryption type " + encType);
}
lock (SyncRoot) clients[c.ID] = c;
c.BeginReceive();
}
catch (ObjectDisposedException) { }
catch (SocketException) { }
catch (Exception e) { Console.WriteLine(e); }
}
internal void KeyExchangeComplete(ClientInfo ci)
{
// Key exchange is complete on this client. Client ready
// handlers may still force a close of the connection
if (ClientReady != null)
if (!ClientReady(this, ci)) ci.Close("ClientReady callback rejected connection");
}
bool ClientConnect(Server s, ClientInfo ci)
{
ci.Delimiter = "\r\n\r\n";
ci.Data = new ClientData(ci);
ci.OnRead += new ConnectionRead(ClientRead);
ci.OnReadBytes += new ConnectionReadBytes(ClientReadBytes);
return true;
}
static void ReadMessage(ClientInfo ci, uint code, byte[] buf, int len)
{
Console.WriteLine("Message, code " + code.ToString("X8") + ", content:");
byte[] ba = new byte[len];
Array.Copy(buf, ba, len);
Console.WriteLine(" " + ByteBuilder.FormatParameter(new Parameter(ba, ParameterType.Byte)));
ci.SendMessage(code, buf, (byte)0, len);
}
void ClientRead(ClientInfo ci, string text)
{
// Read header, if in right state
ClientData data = (ClientData)ci.Data;
if(data.state != ClientState.Header) return; // already done; must be some text in content, which will be handled elsewhere
text = text.Substring(data.headerskip);
Console.WriteLine("Read header: "+text+" (skipping first "+data.headerskip+")");
data.headerskip = 0;
string[] lines = text.Replace("\r\n", "\n").Split('\n');
data.req.HeaderText = text;
// First line: METHOD /path/url HTTP/version
string[] firstline = lines[0].Split(' ');
if(firstline.Length != 3){ SendResponse(ci, data.req, new HttpResponse(400, "Incorrect first header line "+lines[0]), true); return; }
if(firstline[2].Substring(0, 4) != "HTTP"){ SendResponse(ci, data.req, new HttpResponse(400, "Unknown protocol "+firstline[2]), true); return; }
data.req.Method = firstline[0];
data.req.Url = firstline[1];
data.req.HttpVersion = firstline[2].Substring(5);
int p;
for(int i = 1; i < lines.Length; i++){
p = lines[i].IndexOf(':');
if(p > 0) data.req.Header[lines[i].Substring(0, p)] = lines[i].Substring(p+2);
else Console.WriteLine("Warning, incorrect header line "+lines[i]);
}
// If ? in URL, split out query information
p = firstline[1].IndexOf('?');
if(p > 0){
data.req.Page = data.req.Url.Substring(0, p);
data.req.QueryString = data.req.Url.Substring(p+1);
} else {
data.req.Page = data.req.Url;
data.req.QueryString = "";
}
if(data.req.Page.IndexOf("..") >= 0) { SendResponse(ci, data.req, new HttpResponse(400, "Invalid path"), true); return; }
if(!data.req.Header.TryGetValue("Host", out data.req.Host)){ SendResponse(ci, data.req, new HttpResponse(400, "No Host specified"), true); return; }
string cookieHeader;
if(data.req.Header.TryGetValue("Cookie", out cookieHeader)){
string[] cookies = cookieHeader.Split(';');
foreach(string cookie in cookies){
p = cookie.IndexOf('=');
if(p > 0){
data.req.Cookies[cookie.Substring(0, p).Trim()] = cookie.Substring(p+1);
} else {
data.req.Cookies[cookie.Trim()] = "";
}
}
}
string contentLengthString;
if(data.req.Header.TryGetValue("Content-Length", out contentLengthString))
data.req.ContentLength = Int32.Parse(contentLengthString);
else data.req.ContentLength = 0;
//if(data.req.ContentLength > 0){
data.state = ClientState.PreContent;
data.skip = text.Length + 4;
//} else DoProcess(ci);
//ClientReadBytes(ci, new byte[0], 0); // For content length 0 body
}
void ReadData(ClientInfo ci, String text)
{
Console.WriteLine("Received from " + ci.ID + ": " + text);
if (text[0] == '!')
server.Broadcast(Encoding.UTF8.GetBytes(text));
else ci.Send(text);
}
void ClientReadBytes(ClientInfo ci, byte[] bytes, int len)
{
CleanUpSessions();
int ofs = 0;
ClientData data = (ClientData)ci.Data;
Console.WriteLine("Reading "+len+" bytes of content, in state "+data.state+", skipping "+data.skip+", read "+data.read);
switch(data.state){
case ClientState.Content: break;
case ClientState.PreContent:
data.state = ClientState.Content;
if((data.skip - data.read) > len) { data.skip -= len; return; }
ofs = data.skip - data.read; data.skip = 0;
break;
//case ClientState.Header: data.read += len - data.headerskip; return;
default: data.read += len; return;
}
data.req.Content += Encoding.Default.GetString(bytes, ofs, len-ofs);
data.req.BytesRead += len - ofs;
data.headerskip += len - ofs;
#if DEBUG
Console.WriteLine("Reading "+(len-ofs)+" bytes of content. Got "+data.req.BytesRead+" of "+data.req.ContentLength);
#endif
if(data.req.BytesRead >= data.req.ContentLength){
if(data.req.Method == "POST"){
if(data.req.QueryString == "")data.req.QueryString = data.req.Content;
else data.req.QueryString += "&" + data.req.Content;
}
ParseQuery(data.req);
DoProcess(ci);
}
}
