// note: this will throw an ArgumentException if an invalid utf8 string is sent
// null support, see NetworkWriter
public static string ReadString(this NetworkReader reader)
{
// read number of bytes
ushort size = reader.ReadUInt16();
switch (size)
{
case 0:
return(null);
case 1:
return("");
}
int realSize = size - 1;
// make sure it's within limits to avoid allocation attacks etc.
if (realSize >= NetworkWriter.MaxStringLength)
{
throw new EndOfStreamException("ReadString too long: " + realSize + ". Limit is: " + NetworkWriter.MaxStringLength);
}
ArraySegment <byte> data = reader.ReadBytesSegment(realSize);
// convert directly from buffer to string via encoding
return(encoding.GetString(data.Array, data.Offset, data.Count));
}
public static ArraySegment <byte> ReadBytesAndSizeSegment(this NetworkReader reader)
{
// count = 0 means the array was null
// otherwise count - 1 is the length of the array
uint count = reader.ReadPackedUInt32();
return(count == 0 ? default : reader.ReadBytesSegment(checked ((int)(count - 1u))));
}
public static ArraySegment <byte> ReadBytesAndSizeSegment(this NetworkReader reader)
{
// count = 0 means the array was null
// otherwise count - 1 is the length of the array
uint count = reader.ReadUInt();
// Use checked() to force it to throw OverflowException if data is invalid
return(count == 0 ? default : reader.ReadBytesSegment(checked ((int)(count - 1u))));
}
public static string ReadString(this NetworkReader reader)
{
// read number of bytes
ushort size = reader.ReadUShort();
// null support, see NetworkWriter
if (size == 0)
{
return(null);
}
int realSize = size - 1;
// make sure it's within limits to avoid allocation attacks etc.
if (realSize >= NetworkWriter.MaxStringLength)
{
throw new EndOfStreamException($"ReadString too long: {realSize}. Limit is: {NetworkWriter.MaxStringLength}");
}
ArraySegment <byte> data = reader.ReadBytesSegment(realSize);
// convert directly from buffer to string via encoding
return(encoding.GetString(data.Array, data.Offset, data.Count));
}