private void Receive()
{
bool already_check = true;
while (connected)
{
try
{
Byte[] buffer = new Byte[128];
clientSocket.Receive(buffer);
string incomingMessage = Encoding.Default.GetString(buffer);
incomingMessage = incomingMessage.Substring(0, incomingMessage.IndexOf("\0"));
//logs.AppendText("Message received" + "\n");
//logs.AppendText("Server: " + incomingMessage + "\n");
if (incomingMessage == "EfeYarenYigitKayaYou successfully logged inEfeYarenYigitKaya")
{
textBox_message.Enabled = true; //after successfully connection, textbox button should be active.
send_button.Enabled = true; //after connection, send button should be active.
logs.AppendText("Connected to the server!\n");
disconnect_button.Enabled = true; //after connected disconnect button should be active.
userName = incomingName;
connect_button.Enabled = false; //already connected so connect button shoul be inactive
AcceptBut.Enabled = true;
RejectBut.Enabled = true;
friendsBut.Enabled = true;
sendReqBut.Enabled = true;
button1.Enabled = true;
deleteButton.Enabled = true;
}
else if (incomingMessage == "EfeYarenYigitKayaThis username does not exist in databaseEfeYarenYigitKaya") //server sends does not exist message
{
logs.AppendText("You are not in the database\n"); //if this message came from the server and username was wrong, print this
}
else if (incomingMessage == "EfeYarenYigitKayaYou are already logged inEfeYarenYigitKaya")
{
logs.AppendText("You already logged in\n"); //correct username but it already connected
already_check = false; //for blocked to another connection from same user
}
else if (incomingMessage.Length > 18 && incomingMessage.Substring(0, 18) == "EfeYarenYigitKaya£")
{
string inviter = incomingMessage.Substring(18, incomingMessage.Length - 18);
if (!requestList.Contains(inviter))
{
requestList.Add(inviter); // yeni ekledim whenever you receive request that does not exist in your request list add it to your list
}
friendReqList.Clear();
//requestList.Add(inviter);
//bool flag = true;
string currentRequest = "";
foreach (string name in requestList)
{
currentRequest += name + "\n";
}
friendReqList.AppendText(currentRequest);
// if(name == inviter)
// {
// flag = false;
// }
//}
//if (flag)
//{
// requestList.Add(inviter);
// currentRequest += inviter;
//}
//friendReqList.AppendText(currentRequest + "\n");
//friendReqList.AppendText(inviter + "\n");
}
else if (incomingMessage.Length > 18 && incomingMessage.Substring(0, 19) == "EfeYarenYigitKaya*£")
{
string myMessage = incomingMessage.Substring(19, incomingMessage.Length - 19);
logs.AppendText(myMessage + "\n");
}
else if (incomingMessage.Length > 18 && incomingMessage.Substring(0, 19) == "EfeYarenYigitKaya*!")
{
int index = incomingMessage.IndexOf("%");
string sender = incomingMessage.Substring(19, index - 19);
string myMessage = incomingMessage.Substring(index + 1);
logs.AppendText(sender + ": " + myMessage + "\n");
}
else if (incomingMessage.Length > 18 && incomingMessage.Substring(0, 20) == "EfeYarenYigitKaya*<f")
{
string deletedfriend = incomingMessage.Substring(20);
logs.AppendText("There is no such friend as " + deletedfriend + " in your friends list\n");
}
else if (incomingMessage.Length > 18 && incomingMessage.Substring(0, 20) == "EfeYarenYigitKaya*<s")
{
string deletedfriend = incomingMessage.Substring(20);
logs.AppendText("You have succesfully remove " + deletedfriend + " from your friends list\n");
}
else if (incomingMessage.Length > 18 && incomingMessage.Substring(0, 19) == "EfeYarenYigitKaya*<")
{
string clientName = incomingMessage.Substring(19);
logs.AppendText(clientName + " removed you from friends\n");
}
else if (incomingMessage.Length > 18 && incomingMessage.Substring(0, 18) == "EfeYarenYigitKaya#") // once accept friend request
{
string invitee = incomingMessage.Substring(18, incomingMessage.Length - 18);
//friendReqList.AppendText(invitee + "\n");
logs.AppendText(invitee + " Accepted your friend request\n");
}
else if (incomingMessage.Length > 18 && incomingMessage.Substring(0, 18) == "EfeYarenYigitKaya&")
{
string invitee = incomingMessage.Substring(18, incomingMessage.Length - 18);
friendReqList.AppendText(invitee + "\n");
}
else if (incomingMessage.Length > 18 && incomingMessage.Substring(0, 19) == "EfeYarenYigitKaya*&")
{
string invitee = incomingMessage.Substring(19, incomingMessage.Length - 19);
logs.AppendText(invitee + "\n");
}
else if (incomingMessage.Length > 17 && incomingMessage.Substring(0, 18) == "EfeYarenYigitKaya$") // receive friends from server
{
//FriendList.AppendText("print friend list");
FriendList.Clear();
string friends = incomingMessage.Substring(18, incomingMessage.Length - 18);
friends = friends.Replace(',', '\n');
FriendList.AppendText(friends);
//if(friends.Length > 1)
//FriendList.AppendText("********\n");
}
else if (incomingMessage.Substring(0, 3) == "123")
{
logs.AppendText(incomingMessage.Substring(3)); // you have already requested and wait for answer
}
else if (incomingMessage.Substring(0, 3) == "321")
{
logs.AppendText(incomingMessage.Substring(3)); // you requested but there is no such user in database
}
else
{
incomingMessage = incomingMessage.Substring(17, incomingMessage.Length - 34); //true connection and message
logs.AppendText(incomingMessage + "\n"); //print the incoming message
}
}
catch (Exception e)
{
//FriendList.AppendText(e.Message);
if (!terminating)
{
if (already_check)
{
logs.AppendText("The server has disconnected\n"); //disconnect button activated
}
server_check = false;
already_check = true; // user can enter again
connect_button.Enabled = true; //user can connect again because disconnect now
textBox_message.Enabled = false; //user cannot write text
send_button.Enabled = false; //user cannot send message
}
clientSocket.Close();
connected = false;
}
}
}