/// <summary>
/// Creates a buffer containing the error message from the given exception. If the cause is
/// <c>null</c> returns an empty buffer.
/// </summary>
/// <param name="ctx"></param>
/// <param name="cause"></param>
/// <returns></returns>
public static IByteBuffer ToByteBuf(IChannelHandlerContext ctx, Exception cause)
{
if (cause is null || cause.Message is null)
{
return(Unpooled.Empty);
}
return(ByteBufferUtil.WriteUtf8(ctx.Allocator, cause.Message));
}
static void WriteString(IByteBufferAllocator allocator, RedisMessageType type, string content, List <object> output)
{
IByteBuffer buf = allocator.Buffer(type.Length + ByteBufferUtil.Utf8MaxBytes(content) +
RedisConstants.EndOfLineLength);
type.WriteTo(buf);
ByteBufferUtil.WriteUtf8(buf, content);
buf.WriteShort(RedisConstants.EndOfLineShort);
output.Add(buf);
}
private static void CheckUtf8Bytes(string charSequence)
{
var buf = Unpooled.Buffer(ByteBufferUtil.Utf8MaxBytes(charSequence));
try
{
int writtenBytes = ByteBufferUtil.WriteUtf8(buf, charSequence);
int utf8Bytes = ByteBufferUtil.Utf8Bytes(charSequence);
Assert.Equal(writtenBytes, utf8Bytes);
}
finally
{
buf.Release();
}
}
public void WriteUtf8Subsequence()
{
String usAscii = "Some UTF-8 like äÄ∏ŒŒ";
IByteBuffer buf = Unpooled.Buffer(16);
buf.WriteBytes(TextEncodings.UTF8NoBOM.GetBytes(usAscii.Substring(5, 18 - 5)));
IByteBuffer buf2 = Unpooled.Buffer(16);
ByteBufferUtil.WriteUtf8(buf2, usAscii.AsSpan(5, 18 - 5));
Assert.Equal(buf, buf2);
buf.Release();
buf2.Release();
}
public void WriteUtf8()
{
string usAscii = "Some UTF-8 like äÄ∏ŒŒ";
var buf = Unpooled.Buffer(16);
buf.WriteBytes(TextEncodings.UTF8NoBOM.GetBytes(usAscii));
var buf2 = Unpooled.Buffer(16);
ByteBufferUtil.WriteUtf8(buf2, usAscii);
Assert.Equal(buf, buf2);
buf.Release();
buf2.Release();
}
public void WriteUtf8SubsequenceSplitSurrogate()
{
string usAscii = "\uD800\uDC00"; // surrogate pair: one code point, two chars
IByteBuffer buf = Unpooled.Buffer(16);
buf.WriteBytes(Encoding.UTF8.GetBytes(usAscii.Substring(0, 1)));
IByteBuffer buf2 = Unpooled.Buffer(16);
var sb = new StringBuilder(usAscii);
ByteBufferUtil.WriteUtf8(buf2, new StringBuilderCharSequence(sb), 0, 1);
//ByteBufferUtil.WriteUtf8(buf2, new StringCharSequence(usAscii), 0, 1);
Assert.Equal(buf, buf2);
buf.Release();
buf2.Release();
}
public void WriteUtf8InvalidEndOnTrailingSurrogate()
{
string surrogateString = new StringBuilder(2)
.Append('\uDC00')
.ToString();
var buf = Unpooled.Buffer(16);
buf.WriteBytes(TextEncodings.UTF8NoBOM.GetBytes(surrogateString));
var buf2 = Unpooled.Buffer(16);
ByteBufferUtil.WriteUtf8(buf2, surrogateString);
Assert.Equal(buf, buf2);
Assert.Equal(buf.ReadableBytes, ByteBufferUtil.Utf8Bytes(surrogateString));
buf.Release();
buf2.Release();
}
public void WriteUtf8InvalidSubsequences(int start, int end)
{
IByteBuffer buf = Unpooled.Buffer(16);
try
{
ByteBufferUtil.WriteUtf8(buf, (AsciiString)"Some UTF-8 like äÄ∏ŒŒ", start, end);
Assert.False(true, "Did not throw IndexOutOfBoundsException for range (" + start + ", " + end + ")");
}
catch (IndexOutOfRangeException)
{
// expected
}
finally
{
Assert.False(buf.IsReadable());
buf.Release();
}
}
public void WriteUtf8CompositeWrapped()
{
string utf8 = "Some UTF-8 like äÄ∏ŒŒ";
var buf = Unpooled.Buffer(16);
buf.WriteBytes(TextEncodings.UTF8NoBOM.GetBytes(utf8));
var buf2 = new WrappedCompositeByteBuffer(Unpooled.CompositeBuffer().AddComponent(
Unpooled.Buffer(8)).AddComponent(Unpooled.Buffer(24)));
// write some byte so we start writing with an offset.
buf2.WriteByte(1);
ByteBufferUtil.WriteUtf8(buf2, utf8);
// Skip the previously written byte.
Assert.Equal(buf, buf2.SkipBytes(1));
buf.Release();
buf2.Release();
}
static void SendHttpResponse(IChannelHandlerContext ctx, IFullHttpRequest req, IFullHttpResponse res)
{
// Generate an error page if response getStatus code is not OK (200).
HttpResponseStatus responseStatus = res.Status;
if (responseStatus.Code != 200)
{
ByteBufferUtil.WriteUtf8(res.Content, responseStatus.ToString());
HttpUtil.SetContentLength(res, res.Content.ReadableBytes);
}
// Send the response and close the connection if necessary.
var keepAlive = HttpUtil.IsKeepAlive(req) && responseStatus.Code == 200;
HttpUtil.SetKeepAlive(res, keepAlive);
var future = ctx.WriteAndFlushAsync(res);
if (!keepAlive)
{
future.CloseOnComplete(ctx.Channel);
}
}
public static IByteBuffer BB(string s)
{
return(ByteBufferUtil.WriteUtf8(UnpooledByteBufferAllocator.Default, s));
}