private void button1_Click(object sender, EventArgs e)
{
//Before the save and load objects are created the error handling checks the boxes are not empty
if (!string.IsNullOrWhiteSpace(logfileText.Text))
{
Logging log = new Logging(logfileText.Text);
}
if (!string.IsNullOrWhiteSpace(filenameText.Text))
{
saving save = new saving(filenameText.Text);
}
else
{
MessageBox.Show("Ensure text box is not empty");
}
}
static void Main(string[] args)
{
//When the server is started the command line arguements are checked and if anything is present theyre added to variables
for (int i = 0; i < args.Length; i++)
{
switch (args[i])
{
case "-l":
filename = args[++i];
break;
case "-f":
savefile = args[++i];
break;
case "-w":
window = true;
break;
default:
Console.WriteLine("Unknown Option " + args[i]);
break;
}
}
//The save and load objects are created here and the addreses passed.
log = new Logging(filename);
save = new saving(savefile);
//The save file address is used to load the previous server save.
logic.readFromFile(savefile);
//If the server was started in window mode then a form is created, if not the console is used.
if (window == true)
{
// Run windows forms app
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1(ref filename, ref savefile));
}
else
{
logic.runServer();
}
}
//This is the main server method
public void doRequest(Socket connection, Logging log, saving save)
{
//This gets the IP addrsess so it can be added to the log
string host = ((IPEndPoint)connection.RemoteEndPoint).Address.ToString();
string line = null;
//This is added to the log to show the server is functioning correctly
status = "OK";
NetworkStream socketStream;
socketStream = new NetworkStream(connection);
try
{
//The timeout amounts are set here for the read and writes.
socketStream.ReadTimeout = 1000;
socketStream.WriteTimeout = 1000;
StreamWriter sw = new StreamWriter(socketStream);
StreamReader sr = new StreamReader(socketStream);
//The client response is retrieved here, we loop through the streamreader until the value is equal to null.
//The response is added to a string, the string is then split it up using the line breaks and spaces'.
try
{
char[] buffer = new char[1];
while (sr.Peek() > -1)
{
sr.Read(buffer, 0, buffer.Length);
line += buffer[0];
}
}
catch (Exception e)
{
status = "TIMEOUT";
}
string[] lines = line.Split(new string[] { "\r\n" }, StringSplitOptions.None);
string[] firstLine = lines[0].Split(' ');
//We then check which protocol is being used.
//Once we know the protocol we can check for the type of request.
//If it is a search request we can return the users location.
//If it is a post request add the user and their location to the dictionary
if (lines.Length > 2)
{
if (firstLine.Length > 2)
{
if (firstLine[2] == "HTTP/1.0")
{
if (firstLine[0] == "GET")
{
string search = firstLine[1].Replace("/?", "");
if (Program.savedResults.ContainsKey(search))
{
string result = Program.savedResults[search];
sw.Write("HTTP/1.0 200 OK\r\nContent-Type: text/plain\r\n\r\n" + result + "\r\n");
sw.Flush();
}
else
{
sw.Write("HTTP/1.0 404 Not Found\r\nContent-Type: text/plain\r\n\r\n");
sw.Flush();
status = "NO ENTRY";
}
}
else if (firstLine[0] == "POST")
{
string firstWord = firstLine[1];
firstWord = firstWord.Replace("/", "");
string str = lines[3];
if (!Program.savedResults.ContainsKey(firstWord))
{
Program.savedResults.Add(firstWord, str);
sw.Write("HTTP/1.0 200 OK\r\nContent-Type: text/plain\r\n\r\n");
sw.Flush();
}
else
{
Program.savedResults[firstWord] = str;
sw.Write("HTTP/1.0 200 OK\r\nContent-Type: text/plain\r\n\r\n");
sw.Flush();
}
}
}
else if (firstLine[2] == "HTTP/1.1")
{
if (firstLine[0] == "GET")
{
string search = firstLine[1].Replace("/?name=", "");
if (Program.savedResults.ContainsKey(search))
{
string result = Program.savedResults[search];
sw.Write("HTTP/1.1 200 OK\r\nContent-Type: text/plain\r\n\r\n" + result + "\r\n");
sw.Flush();
}
else
{
sw.Write("HTTP/1.1 404 Not Found\r\nContent-Type: text/plain\r\n\r\n");
sw.Flush();
status = "NO ENTRY";
}
}
if (firstLine[0] == "POST")
{
string name;
string location;
string[] temp = lines[4].Split('&');
name = temp[0];
location = temp[1];
name = name.Replace("name=", "");
location = location.Replace("location=", "");
if (!Program.savedResults.ContainsKey(name))
{
Program.savedResults.Add(name, location);
sw.Write("HTTP/1.1 200 OK\r\nContent-Type: text/plain\r\n\r\n");
sw.Flush();
}
else
{
Program.savedResults[name] = location;
sw.Write("HTTP/1.1 200 OK\r\nContent-Type: text/plain\r\n\r\n");
sw.Flush();
}
}
}
}
else
{
if (firstLine[0] == "PUT")
{
string firstWord = firstLine[1];
firstWord = firstWord.Replace("/", "");
string str = lines[2];
if (!Program.savedResults.ContainsKey(firstWord))
{
Program.savedResults.Add(firstWord, str);
sw.Write("HTTP/0.9 200 OK\r\nContent-Type: text/plain\r\n\r\n");
sw.Flush();
}
else
{
Program.savedResults[firstWord] = str;
sw.Write("HTTP/0.9 200 OK\r\nContent-Type: text/plain\r\n\r\n");
sw.Flush();
}
}
}
}
else
{
if (firstLine[0] == "GET")
{
string search = firstLine[1].Replace("/", "");
if (Program.savedResults.ContainsKey(search))
{
string result = Program.savedResults[search];
sw.Write("HTTP/0.9 200 OK\r\nContent-Type: text/plain\r\n\r\n" + result + "\r\n");
sw.Flush();
}
else
{
sw.Write("HTTP/0.9 404 Not Found\r\nContent-Type: text/plain\r\n\r\n");
sw.Flush();
status = "NO ENTRY";
}
}
else
{
if (line.Contains(" "))
{
string firstWord = line.Split(' ')[0];
int i = line.IndexOf(" ") + 1;
string str = line.Substring(i);
if (!Program.savedResults.ContainsKey(firstWord))
{
Program.savedResults.Add(firstWord, str);
sw.Write("OK\r\n");
sw.Flush();
}
else
{
Program.savedResults[firstWord] = str;
sw.Write("OK\r\n");
sw.Flush();
}
}
else
{
string search = line.Replace("\r\n", "");
if (Program.savedResults.ContainsKey(search))
{
string result = Program.savedResults[search];
sw.Write(result);
sw.Flush();
}
else
{
sw.Write("ERROR: no entries found");
sw.Flush();
status = "NO ENTRY";
}
}
}
}
}
catch (Exception e)
{
status = "EXCEPTION";
}
finally
{
//The connections are closed
//The write to log method is called and so is the write to save file method
socketStream.Close();
connection.Close();
log.WriteToLog(host, line, status);
save.writeToFile();
}
}
