public async Task ProcessAllRequests()
{
Reset();
while (true)
{
var buffer = await _input.ReadAsync();
var consumed = buffer.Start;
bool needMoreData = true;
try
{
if (buffer.IsEmpty && _input.Completion.IsCompleted)
{
// We're done with this connection
return;
}
if (_state == ParsingState.StartLine)
{
// Find \n
var delim = buffer.IndexOf(ref CommonVectors.LF);
if (delim == ReadCursor.NotFound)
{
continue;
}
// Grab the entire start line
var startLine = buffer.Slice(0, delim);
// Move the buffer to the rest
buffer = buffer.Slice(delim).Slice(1);
delim = startLine.IndexOf(ref CommonVectors.Space);
if (delim == ReadCursor.NotFound)
{
throw new Exception();
}
var method = startLine.Slice(0, delim);
Method = method.Preserve();
// Skip ' '
startLine = startLine.Slice(delim).Slice(1);
delim = startLine.IndexOf(ref CommonVectors.Space);
if (delim == ReadCursor.NotFound)
{
throw new Exception();
}
var path = startLine.Slice(0, delim);
Path = path.Preserve();
// Skip ' '
startLine = startLine.Slice(delim).Slice(1);
delim = startLine.IndexOf(ref CommonVectors.CR);
if (delim == ReadCursor.NotFound)
{
throw new Exception();
}
var httpVersion = startLine.Slice(0, delim);
HttpVersion = httpVersion.Preserve();
_state = ParsingState.Headers;
consumed = startLine.End;
}
// Parse headers
// key: value\r\n
while (!buffer.IsEmpty)
{
var ch = buffer.Peek();
if (ch == -1)
{
break;
}
if (ch == '\r')
{
// Check for final CRLF.
buffer = buffer.Slice(1);
ch = buffer.Peek();
buffer = buffer.Slice(1);
if (ch == -1)
{
break;
}
else if (ch == '\n')
{
consumed = buffer.Start;
needMoreData = false;
break;
}
// Headers don't end in CRLF line.
throw new Exception();
}
var headerName = default(ReadableBuffer);
var headerValue = default(ReadableBuffer);
// End of the header
// \n
var delim = buffer.IndexOf(ref CommonVectors.LF);
if (delim == ReadCursor.NotFound)
{
break;
}
var headerPair = buffer.Slice(0, delim);
buffer = buffer.Slice(delim).Slice(1);
// :
delim = headerPair.IndexOf(ref CommonVectors.Colon);
if (delim == ReadCursor.NotFound)
{
throw new Exception();
}
headerName = headerPair.Slice(0, delim).TrimStart();
headerPair = headerPair.Slice(delim).Slice(1);
// \r
delim = headerPair.IndexOf(ref CommonVectors.CR);
if (delim == ReadCursor.NotFound)
{
// Bad request
throw new Exception();
}
headerValue = headerPair.Slice(0, delim).TrimStart();
RequestHeaders.SetHeader(ref headerName, ref headerValue);
// Move the consumed
consumed = buffer.Start;
}
}
catch (Exception)
{
StatusCode = 400;
await EndResponse();
return;
}
finally
{
buffer.Consumed(consumed);
}
if (needMoreData)
{
continue;
}
var context = _application.CreateContext(this);
try
{
await _application.ProcessRequestAsync(context);
}
catch (Exception ex)
{
StatusCode = 500;
_application.DisposeContext(context, ex);
}
finally
{
await EndResponse();
}
if (!KeepAlive)
{
break;
}
Reset();
}
}
