private void server_data_arrival(easy_socket.udp.Socket_Server s, easy_socket.udp.EventArgs_ReceiveDataSocketUDP e)
{
System.Net.IPEndPoint ipep = (System.Net.IPEndPoint)e.remote_host_EndPoint;
if (!this.textBox_telnet.Text.EndsWith("\r\n"))
{
this.textBox_telnet_add("\r\n");
}
this.textBox_telnet_add("Data from " + ipep.Address + " port " + ipep.Port.ToString() + " :\r\n");
if (this.checkBox_rcv_hexa_data.Checked)
{
this.textBox_telnet_add(easy_socket.hexa_convert.byte_to_hexa(e.buffer, " ") + " ");
}
else
{
string strdata = System.Text.Encoding.Default.GetString(e.buffer, 0, e.buffer_size);
this.textBox_telnet_add(strdata);
}
if (this.b_server_only)
{
//update remote host
this.myremoteip = ((System.Net.IPEndPoint)e.remote_host_EndPoint).Address.ToString();
this.myremoteport = ((System.Net.IPEndPoint)e.remote_host_EndPoint).Port;
}
if (echo_server)
{
srv.send(e.buffer, e.remote_host_EndPoint);
}
}
private void server_stopped(easy_socket.udp.Socket_Server s, System.EventArgs e)
{
if (!this.textBox_telnet.Text.EndsWith("\r\n"))
{
this.textBox_telnet_add("\r\n");
}
this.textBox_telnet_add("Server stopped.\r\n");
this.enable_state(false);
}
private void remote_host_unreachable(easy_socket.udp.Socket_Server s, System.EventArgs e)
{
if (this.textBox_telnet.Text != "")
{
if (!this.textBox_telnet.Text.EndsWith("\r\n"))
{
this.textBox_telnet_add("\r\n");
}
}
this.textBox_telnet_add("Remote host unreachable.\r\n");
}
private void server_error(easy_socket.udp.Socket_Server s, easy_socket.udp.EventArgs_Exception e)
{
if (this.textBox_telnet.Text != "")
{
if (!this.textBox_telnet.Text.EndsWith("\r\n"))
{
this.textBox_telnet_add("\r\n");
}
}
this.textBox_telnet_add("Error: " + e.exception.Message + "\r\n");
this.enable_state(false);
}
private void socket_event_Socket_Server_Remote_Host_Unreachable(easy_socket.udp.Socket_Server sender, EventArgs e)
{
int res = System.Threading.WaitHandle.WaitAny(this.HexaViewWaitHandles);
if (res == 0) // close event
{
return;
}
this.add_info("Remote Host Unreachable");
this.refresh_data();
this.evtNotWrittingData.Set();
}
private void socket_event_Socket_Server_Started(easy_socket.udp.Socket_Server sender, EventArgs e)
{
int res = System.Threading.WaitHandle.WaitAny(this.HexaViewWaitHandles);
if (res == 0) // close event
{
return;
}
this.add_info("Server Started (" + sender.local_ip + ":" + sender.local_port.ToString() + ")");
this.refresh_data();
this.evtNotWrittingData.Set();
}
private void socket_event_Socket_Server_Error(easy_socket.udp.Socket_Server sender, easy_socket.udp.EventArgs_Exception e)
{
int res = System.Threading.WaitHandle.WaitAny(this.HexaViewWaitHandles);
if (res == 0) // close event
{
return;
}
this.add_info("Socket Error: " + e.exception.Message);
this.refresh_data();
this.evtNotWrittingData.Set();
}
public void new_udp_interactive(string local_ip, int local_port, string remote_ip, int remote_port)
{
this.evtNotWrittingData = new System.Threading.AutoResetEvent(true);
this.evtStop = new System.Threading.ManualResetEvent(false);
this.HexaViewWaitHandles = new System.Threading.WaitHandle[] { this.evtStop, this.evtNotWrittingData };
this.remote_server_ip = remote_ip;
this.remote_server_port = remote_port;
this.Text = "Transfer to UDP server " + this.remote_server_ip + ":" + this.remote_server_port.ToString();
this.socket = new easy_socket.udp.Socket_Server(local_ip, local_port);
this.add_events();
this.socket.start();
}
private void server_started(easy_socket.udp.Socket_Server s, System.EventArgs e)
{
if (this.textBox_telnet.Text != "")
{
if (!this.textBox_telnet.Text.EndsWith("\r\n"))
{
this.textBox_telnet_add("\r\n");
}
}
this.textBox_telnet_add("Server started.\r\n");
if (srv != null && this.button_send.Text == "Send")// only if client/server
{
this.Text += " Local port: " + srv.local_port.ToString();
}
}
public void new_udp_server(string remote_ip, int remote_port, int local_port)
{
echo_server = false;
this.Text = "UDP Client/Server Remote host IP: " + remote_ip + " Port: " + remote_port.ToString();
myremoteip = remote_ip;
myremoteport = remote_port;
myport = local_port;
srv = new easy_socket.udp.Socket_Server(local_port);
this.b_server_only = false;
add_events();
srv.start();
this.enable_state(true);
}
public void new_udp_server(string ip, int port, bool echo)
{
this.button_send.Text = "Reply";
echo_server = echo;
if (ip == "")
{
this.Text = "UDP Server Port: " + port.ToString();
}
else
{
this.Text = "UDP Server IP: " + ip + " Port: " + port.ToString();
}
myremoteip = "127.0.0.1";
myport = port;
myremoteport = 6000;
this.b_server_only = true;
srv = new easy_socket.udp.Socket_Server(ip, port);
add_events();
srv.start();
this.enable_state(true);
}
private void socket_event_Socket_Server_Data_Arrival(easy_socket.udp.Socket_Server sender, easy_socket.udp.EventArgs_ReceiveDataSocketUDP e)
{
int res = System.Threading.WaitHandle.WaitAny(this.HexaViewWaitHandles);
if (res == 0) // close event
{
return;
}
System.Drawing.Color color = System.Drawing.Color.Black;
bool b_transmit = false;
System.Net.IPEndPoint ipep = (System.Net.IPEndPoint)e.remote_host_EndPoint;
// if data comes from remote server, transfer data to last client
if ((ipep.Address.ToString() == this.remote_server_ip) && (ipep.Port == this.remote_server_port))
{
if (b_last_client)
{
// transfer data if required
if (this.radioButton_srv_to_clt_allow.Checked)
{
b_transmit = true;
}
else if (this.radioButton_srv_to_clt_block.Checked)
{
b_transmit = false;
}
else// query
{
string msg = "Do you want to allow the transfer of following data from " + ipep.Address + ":" + ipep.Port.ToString() + "?\r\n"
+ "Hexa Data:\r\n"
+ this.split_in_multiple_lines(easy_socket.hexa_convert.byte_to_hexa(e.buffer), 50)
+ "Text Data:\r\n"
+ this.split_in_multiple_lines(System.Text.Encoding.Default.GetString(e.buffer), 50);
b_transmit = (MessageBox.Show(this, msg, "Tcp Interactive", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes);
}
if (b_transmit)
{
this.socket.send(e.buffer, this.last_client_ip, this.last_client_port);
color = System.Drawing.Color.Black;
}
else
{
color = System.Drawing.Color.Red;
}
}
else
{
color = System.Drawing.Color.Red;
b_transmit = false;
}
}
else// data is from a client, transfer it to remote server
{
// update info about last clt
this.last_client_ip = ipep.Address.ToString();
this.last_client_port = ipep.Port;
if (!this.b_last_client)
{
this.b_last_client = true;
}
// transfer data if required
if (this.radioButton_clt_to_srv_allow.Checked)
{
b_transmit = true;
}
else if (this.radioButton_clt_to_srv_block.Checked)
{
b_transmit = false;
}
else// query
{
string msg = "Do you want to allow the transfer of following data from " + ipep.Address + ":" + ipep.Port.ToString() + "?\r\n"
+ "Hexa Data:\r\n"
+ this.split_in_multiple_lines(easy_socket.hexa_convert.byte_to_hexa(e.buffer), 50)
+ "Text Data:\r\n"
+ this.split_in_multiple_lines(System.Text.Encoding.Default.GetString(e.buffer), 50);
b_transmit = (MessageBox.Show(this, msg, "Tcp Interactive", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes);
}
if (b_transmit)
{
this.socket.send(e.buffer, this.remote_server_ip, this.remote_server_port);
color = System.Drawing.Color.Blue;
}
else
{
color = System.Drawing.Color.Violet;
}
}
if (b_transmit)
{
this.add_info("Data from " + ipep.Address + ":" + ipep.Port.ToString().ToString());
}
else
{
this.add_info("Data from " + ipep.Address + ":" + ipep.Port.ToString() + "(Blocked)");
}
// color depends of sender && user action
this.add_data(e.buffer, color);
this.refresh_data();
this.evtNotWrittingData.Set();
}
