Generate a "websocket style" length header

gistfile1.txt

    // only supports messages up to 65536 characters long
    // takes a first param of byte_count and generates the correct "websocket style" header
    // *header_len is set to the number of bytes used in header[]
    void build_message_header(const size_t byte_count, char header[3], size_t* header_len)
    {
      size_t len = byte_count;
    	if( len < 126 )
    	{
    		header[0] = len & 0xff;
    		*header_len = 1;
    	}
    	else if( len < 65536 )
    	{
    		header[0] = 126;
    		header[1] = (len>>8) & 0xff;
    		header[2] = len & 0xff;
    		*header_len = 3;
    	}
    }