private async Task <FlexResponse> ProcessRequest(FlexRequest request)
{
Func <FlexRequest, Task <FlexResponse> > processor = null;
if (request.Method == "GET")
{
Get.TryGetValue(request.Url, out processor);
}
else if (request.Method == "POST")
{
Post.TryGetValue(request.Url, out processor);
}
else if (request.Method == "PUT")
{
Put.TryGetValue(request.Url, out processor);
}
else if (request.Method == "DELETE")
{
Delete.TryGetValue(request.Url, out processor);
}
if (processor != null)
{
FlexResponse response = await processor(request);
return(response);
}
return(DefaultResponse);
}
public static FlexRequest TryParse(string requestRaw)
{
try
{
FlexRequest httpRequest = new FlexRequest();
string[] linesRaw = requestRaw.Split(new[] { "\r\n" }, StringSplitOptions.None);
string[] request = linesRaw[0].Split(' ');
httpRequest.Method = request[0].ToUpperInvariant();
string completeQuery = request[1];
string[] queryString = completeQuery.Split('?');
httpRequest.Url = queryString[0];
if (queryString.Length > 1)
{
httpRequest.QueryParameters = ParseQueryString(queryString[1]);
}
httpRequest.Protocol = request[2];
for (int i = 1; i < linesRaw.Length; ++i)
{
string line = linesRaw[i];
// content begins
if (String.IsNullOrEmpty(line))
{
StringBuilder contentBuilder = new StringBuilder();
for (int j = i + 1; j < linesRaw.Length; ++j)
{
contentBuilder.AppendLine(linesRaw[j]);
}
httpRequest.Body = contentBuilder.ToString();
break;
}
// header
int separater = line.IndexOf(":");
string key = line.Substring(0, separater);
string value = line.Substring(separater + 2);
httpRequest.Header[key] = value;
}
return(httpRequest);
}
catch
{
// error while parsing
return(null);
}
}
private async void ListenerConnectionReceived(StreamSocketListener sender, StreamSocketListenerConnectionReceivedEventArgs args)
{
StreamSocket socket = args.Socket;
StringBuilder requestStrBuilder = new StringBuilder();
using (IInputStream input = socket.InputStream)
{
byte[] data = new byte[BufferSize];
IBuffer buffer = data.AsBuffer();
uint dataRead = BufferSize;
while (dataRead == BufferSize)
{
await input.ReadAsync(buffer, BufferSize, InputStreamOptions.Partial);
requestStrBuilder.Append(Encoding.UTF8.GetString(data, 0, (int)buffer.Length));
dataRead = buffer.Length;
}
}
string requestStr = requestStrBuilder.ToString();
if (String.IsNullOrEmpty(requestStr))
{
return;
}
FlexRequest request = FlexRequest.TryParse(requestStr);
if (request == null)
{
return;
}
FlexResponse response = await ProcessRequest(request);
using (IOutputStream output = socket.OutputStream)
{
using (Stream responseStream = output.AsStreamForWrite())
{
await response.WriteToStream(responseStream);
await responseStream.FlushAsync();
}
}
}