private async Task<WebResponse> HomePage(WebRequest request)
{
// Prepare the response object
var response = new WebResponse
{
// Create a new dictionary for headers - this could be done using a more advanced class for
// WebResponse object - I just used a simple structure
Header = new Dictionary<string, string>
{
// Add content type header
{
"Content-Type",
"application/json'"
}
}
};
// Build the response content
Stream responseText = new MemoryStream();
var contentWriter = new StreamWriter(responseText);
contentWriter.WriteLine(
"{\"status\":200,\"message\":\"The API is available at http://" + IpAddress + ":" + Port +
"/?color=######\"}"
);
contentWriter.Flush();
// Assign the response
response.Content = responseText;
// Return the response
return response;
}
private async Task<WebResponse> ApiPage(WebRequest request)
{
// Prepare the response object
var response = new WebResponse
{
// Create a new dictionary for headers - this could be done using a more advanced class for
// WebResponse object - I just used a simple structure
Header = new Dictionary<string, string>
{
// Add content type header
{
"Content-Type",
"application/json'"
}
}
};
Stream responseText = new MemoryStream();
if (request.Uri.IndexOf('?') > -1)
{
var queryString = request.Uri.Substring(request.Uri.IndexOf('?'));
var decoder = new WwwFormUrlDecoder(queryString);
foreach (var color in decoder.Where(param => param.Name == "color").Select(param => Color.FromArgb(255,
Convert.ToByte(param.Value.Substring(0, 2), 16),
Convert.ToByte(param.Value.Substring(2, 2), 16),
Convert.ToByte(param.Value.Substring(4, 2), 16))))
{
try
{
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(CoreDispatcherPriority.Normal,
() =>
{
var colorBrush = new SolidColorBrush(color);
LightColor = colorBrush;
var contentWriter = new StreamWriter(responseText);
contentWriter.WriteLine(
"{\"status\":200,\"message\":\"Color was set to " + LightColor.Color + "\"}"
);
contentWriter.Flush();
}
);
}
catch (Exception e)
{
Debug.WriteLine(e);
}
}
}
// Assign the response
response.Content = responseText;
// Return the response
return response;
}
/// <summary>
/// Method which parses the request and decides about the action
/// </summary>
/// <param name="requestFile">Path to the temporary file holding the request packet</param>
/// <param name="socket">Socket used with the request (required for response)</param>
public async void ParseRequest(string requestFile, StreamSocket socket)
{
// Open and read the request: needs stream reading support for large files
var plika = _isf.OpenFile(requestFile, FileMode.Open);
var reada = new StreamReader(plika);
// Read the first ling to get request type
var linge = reada.ReadLine();
// Create new request object (same type as response object - possibly better class naming needs to be used)
var request = new WebRequest();
// If there is any data...
if (!string.IsNullOrEmpty(linge))
{
// Get the method (currently GET only supported really) and the request URL
if (linge.Substring(0, 3) == "GET")
{
request.Method = "GET";
request.Uri = linge.Substring(4);
}
else if (linge.Substring(0, 4) == "POST")
{
request.Method = "POST";
request.Uri = linge.Substring(5);
}
// Remove the HTTP version
request.Uri = Regex.Replace(request.Uri, " HTTP.*$", string.Empty);
// Create a dictionary for the sent headers
var headers = new Dictionary<string, string>();
// Read HTTP headers into the dictionary
string line;
do
{
line = reada.ReadLine();
var sepa = new string[1];
sepa[0] = ":";
var elems = line.Split(sepa, 2, StringSplitOptions.RemoveEmptyEntries);
if (elems.Length > 0)
{
headers.Add(elems[0], elems[1]);
}
} while (line.Length > 0);
// Assign headers to the request object
request.Header = headers;
// Assign rest of the content to the request object in a form of a stream handle moved to the part with content after previous read line operations
request.Content = reada.BaseStream;
// Determines if we found a matching URL rule
var foundrule = false;
// Create a stream writer to the output stream (response)
var writ = new DataWriter(socket.OutputStream);
// If there are any server rules
if (_serverRules != null)
{
// For every rule...
foreach (
var toSendTask in
from rulePart in _serverRules.Keys
where rulePart.IsMatch(request.Uri)
select _serverRules[rulePart](request))
{
// Mark that we found a rule
foundrule = true;
// Wait for the response to get fulfilled
var toSend = await toSendTask;
// If the rule is meant to redirect...
writ.WriteString(toSend.Header.ContainsKey("Location")
? "HTTP/1.1 302\r\n"
: "HTTP/1.1 200 OK\r\n");
// Write content length to the buffer
writ.WriteString("Content-Length: " + (toSend.Content == null ? 0 : toSend.Content.Length) +
"\r\n");
// For each of the response headers (returned by the delegate assigned to the URL rule
foreach (var header in toSend.Header)
{
// Write it to the output
writ.WriteString(header.Key + ": " + header.Value + "\r\n");
}
// Add connection: close header
writ.WriteString("Connection: close\r\n");
// New line before writing content
writ.WriteString("\r\n");
// We lock the web server until response is finished
lock (this)
{
// Reset the output stream
if (toSend.Content != null)
{
toSend.Content.Seek(0, SeekOrigin.Begin);
Task.Run(async () =>
{
await writ.StoreAsync(); // Wait for the data to be saved in the output
await writ.FlushAsync(); // Flush (send to the output)
// Write the data to the output using 1024 buffer (store and flush after every loop)
while (toSend.Content.Position < toSend.Content.Length)
{
var buffer = toSend.Content.Length - toSend.Content.Position < 1024
? new byte[toSend.Content.Length - toSend.Content.Position]
: new byte[1024];
toSend.Content.Read(buffer, 0, buffer.Length);
writ.WriteBytes(buffer);
await writ.StoreAsync();
await writ.FlushAsync();
}
toSend.Content.Dispose();
});
}
else
{
writ.WriteString("HTTP/1.1 200 OK\r\n");
writ.WriteString("Content-Type: text/html\r\n");
writ.WriteString("Content-Length: 0\r\n");
writ.WriteString("Pragma: no-cache\r\n");
writ.WriteString("Connection: close\r\n");
writ.WriteString("\r\n");
Task.Run(async () => { await writ.StoreAsync(); });
}
}
break;
}
}
if (foundrule) return;
writ.WriteString("HTTP/1.1 404 Not Found\r\n");
writ.WriteString("Content-Type: text/html\r\n");
writ.WriteString("Content-Length: 9\r\n");
writ.WriteString("Pragma: no-cache\r\n");
writ.WriteString("Connection: close\r\n");
writ.WriteString("\r\n");
writ.WriteString("Not found");
Task.Run(async () => { await writ.StoreAsync(); });
}
}
