}
}
+ internal long? LoadedBufferLength {
+ get {
+ return buffer == null ? (long?)null : buffer.Length;
+ }
+ }
+
public Task CopyToAsync (Stream stream)
{
return CopyToAsync (stream, null);
public Task LoadIntoBufferAsync ()
{
- return LoadIntoBufferAsync (65536);
+ return LoadIntoBufferAsync (int.MaxValue);
}
public async Task LoadIntoBufferAsync (long maxBufferSize)
if (buffer.Length == 0)
return string.Empty;
+ var buf = buffer.GetBuffer ();
+ var buf_length = (int) buffer.Length;
+ int preambleLength = 0;
Encoding encoding;
+
if (headers != null && headers.ContentType != null && headers.ContentType.CharSet != null) {
encoding = Encoding.GetEncoding (headers.ContentType.CharSet);
+ preambleLength = StartsWith (buf, buf_length, encoding.GetPreamble ());
} else {
- encoding = Encoding.UTF8;
+ encoding = GetEncodingFromBuffer (buf, buf_length, ref preambleLength) ?? Encoding.UTF8;
+ }
+
+ return encoding.GetString (buf, preambleLength, buf_length - preambleLength);
+ }
+
+ static Encoding GetEncodingFromBuffer (byte[] buffer, int length, ref int preambleLength)
+ {
+ var encodings_with_preamble = new [] { Encoding.UTF8, Encoding.UTF32, Encoding.Unicode };
+ foreach (var enc in encodings_with_preamble) {
+ if ((preambleLength = StartsWith (buffer, length, enc.GetPreamble ())) != 0)
+ return enc;
+ }
+
+ return null;
+ }
+
+ static int StartsWith (byte[] array, int length, byte[] value)
+ {
+ if (length < value.Length)
+ return 0;
+
+ for (int i = 0; i < value.Length; ++i) {
+ if (array [i] != value [i])
+ return 0;
}
- return encoding.GetString (buffer.GetBuffer (), 0, (int) buffer.Length);
+ return value.Length;
}
protected internal abstract Task SerializeToStreamAsync (Stream stream, TransportContext context);