UserAgent 가져오기

        public Task<BlazorClientInfo> GetUserAgent(string userAgent)
        {
            userAgent = "Mozilla/5.0 (iPhone; CPU iPhone OS 5_1_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9B206 Safari/7534.48.3";
            bool isMobile = false;
            Regex b = new Regex(@"(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino", RegexOptions.IgnoreCase | RegexOptions.Multiline);
            Regex v = new Regex(@"1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-", RegexOptions.IgnoreCase | RegexOptions.Multiline);
            if ((b.IsMatch(userAgent) || v.IsMatch(userAgent.Substring(0, 4))))
            {
                isMobile = true;
            }

            string uaString = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.163 Whale/2.7.100.20 Safari/537.36";
            Parser uaParser = Parser.GetDefault();
            UAParser.ClientInfo c = uaParser.Parse(userAgent);
            
            return Task.FromResult(new BlazorClientInfo
            {
                Device = new Device { Family = c.Device.Family,
                Brand = c.Device.Brand,
                Model = c.Device.Model,
                IsSpider = c.Device.IsSpider
                },
                OS = new OS {
                    Family = c.OS.Family,
                    Major = c.OS.Major,
                    Minor = c.OS.Minor,
                    Patch = c.OS.Patch,
                    PatchMinor = c.OS.PatchMinor
                },
                UA = new UserAgent
                {
                    Family = c.UA.Family,
                    Major = c.UA.Major,
                    Minor = c.UA.Minor,
                    Patch = c.UA.Patch
                },
                isMobile = isMobile
            });
        }

@page "/UAParser"
@using Blazor.App.Tmp.Data
@using Microsoft.AspNetCore.Http
@inject IHttpContextAccessor httpContextAccessor
@inject WeatherForecastService ForecastService

<h1>UAParser</h1>

<div></div>
<p>@c.UA.Family</p>
<p>@c.UA.Major</p>
<p>@c.UA.Minor</p>
<p>@c.UA.Patch</p>
<p>@c.OS.Family</p>
<p>@c.OS.Major</p>
<p>@c.OS.Minor</p>
<p>@c.OS.Patch</p>
<p>@c.Device.Family</p>
<p>@c.Device.Brand</p>
<p>@c.Device.IsSpider</p>
<p>@c.Device.Model</p>
<p>@c.isMobile.ToString()</p>
@code {

    // get a parser using externally supplied yaml definitions
    // var uaParser = Parser.FromYaml(yamlString);

    public BlazorClientInfo c { get; set; }

    protected override async Task OnInitializedAsync()
    {
        c = await ForecastService.GetUserAgent(httpContextAccessor.HttpContext.Request.Headers["User-Agent"]);
    }

    //  Console.WriteLine(c.UserAgent.Family); // => "Mobile Safari"
    //  Console.WriteLine(c.UserAgent.Major);  // => "5"
    //  Console.WriteLine(c.UserAgent.Minor);  // => "1"

    //  Console.WriteLine(c.OS.Family);        // => "iOS"
    //Console.WriteLine(c.OS.Major);         // => "5"
    //Console.WriteLine(c.OS.Minor);         // => "1"

    //Console.WriteLine(c.Device.Family);    // => "iPhone"
}