1. 參考這裡設定第一個網站:
https://blog.johnwu.cc/article/centos-asp-net-core-neginx.html
注意, 文章中有一個錯誤:
/etc/nginx/conf.d/my-website.conf 的第 27 行, 應該是 include /etc/nginx/conf.d/default_proxy_settings;

2.  因為要避開 5000 port, 所以修改第二個網站的 appsettings.json, 讓第二個網站開在 5002 port, 如下.

{

"Logging": {

    "LogLevel": {

     "Default": "Information",

     "Microsoft": "Warning",

     "Microsoft.Hosting.Lifetime": "Information"

    }

},

"Kestrel": {

        "EndPoints": {

                "Http": {

                        "Url": "http://localhost:5002"

                }

        }

},

"AllowedHosts": "*"

}

3. 新增 /etc/nginx/conf.d/my-website2.conf, 要注意
    A. portal2
    B. server localhost:5002
    C. server_name coretest2.bike.idv.tw
    當然 SSL 憑証的檔名也要記得改.

upstream portal2 {

    # localhost:5000 改成 ASP.NET Core 所監聽的 Port

    server localhost:5002;

}



server {

    # 只要是透過這些 Domain 連 HTTP 80 Port，都會轉送封包到 ASP.NET Core

    listen 80;

    # 可透過空白區分，綁定多個 Domain

    server_name coretest2.bike.idv.tw;

    location / {

        proxy_pass http://portal2/;

        include /etc/nginx/conf.d/default_proxy_settings;

    }

}



# 用 HTTPS 必須要有 SSL 憑證，如果沒有要綁定 SSL 可以把下面整段移除

server {

    # 只要是透過這些 Domain 連 HTTPS 443 Port，都會轉送封包到 ASP.NET Core

    listen 443 ssl;

    server_name coretest2.bike.idv.tw;

    ssl_certificate /etc/nginx/ssl/coretest2.bike.idv.tw.crt;

    ssl_certificate_key /etc/nginx/ssl/coretest2.bike.idv.tw.key;



    location / {

        proxy_pass http://portal2/;

        include /etc/nginx/conf.d/default_proxy_settings;

    }

}

改完後就可以用了.

以下是 https://blog.johnwu.cc/article/centos-asp-net-core-neginx.html 抄過來的一些檔案, 作為備份:

setup-aspnet-core.sh

#!/bin/bash



main() {

    sudo yum -y install epel-release

    sudo yum -y update



    install_nginx

    install_dotnet



    sudo firewall-cmd --add-service=http --permanent

    sudo firewall-cmd --add-service=https --permanent

    sudo firewall-cmd --reload

}



install_nginx() {

    echo "###################################"

    echo "########## Install Nginx ##########"

    echo "###################################"

    sudo yum -y install httpd-tools nginx

    sudo setsebool -P httpd_can_network_connect on

    sudo sed -i 's/^SELINUX=.*/SELINUX=disabled/' /etc/selinux/config

    sudo setenforce 0

    sudo systemctl enable nginx

    sudo systemctl restart nginx

}



install_dotnet() {

    echo "###########################################"

    echo "########## Install .NET Core 2.2 ##########"

    echo "###########################################"

    sudo rpm -Uvh https://packages.microsoft.com/config/rhel/7/packages-microsoft-prod.rpm

    sudo yum -y install aspnetcore-runtime-2.2

}



main "$@"

用以下指令執行:

sudo sh setup-aspnet-core.sh

/etc/systemd/system/my-website.service, (/bin/dotnet 有可能是 /usr/bin/dotnet)

[Unit]

# Description=<此服務的摘要說明>

Description=MyWebsite



[Service]

# WorkingDirectory=<ASP.NET Core 專案目錄>

WorkingDirectory=/usr/share/my-website



# ExecStart=/bin/dotnet <ASP.NET Core 起始 dll>

ExecStart=/bin/dotnet MyWebsite.dll



# 啟動若失敗，就重啟到成功為止

Restart=always

# 重啟的間隔秒數

RestartSec=10



# 設定環境變數，注入給 ASP.NET Core 用

Environment=ASPNETCORE_ENVIRONMENT=Production

Environment=DOTNET_PRINT_TELEMETRY_MESSAGE=false



[Install]

WantedBy=multi-user.target

服務相關指令：

# 開啟，開機自動啟動服務

systemctl enable my-website.service



# 關閉，開機自動啟動服務

systemctl disable my-website.service



# 啟動服務

systemctl start my-website.service



# 重啟服務

systemctl restart my-website.service



# 停止服務

systemctl stop my-website.service



# 查看服務狀態

systemctl status my-website.service

/etc/nginx/conf.d/default_proxy_settings

proxy_http_version 1.1;

proxy_set_header Upgrade $http_upgrade;

proxy_set_header Connection $http_connection;

proxy_set_header Host $host;

proxy_set_header X-Real-IP $remote_addr;

proxy_set_header X-Forwarded-Host $remote_addr;

proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

proxy_set_header X-Forwarded-Proto $scheme;

proxy_cache_bypass $http_upgrade;

/etc/nginx/conf.d/my-website.conf

upstream portal {

    # localhost:5000 改成 ASP.NET Core 所監聽的 Port

    server localhost:5000;

}



server {

    # 只要是透過這些 Domain 連 HTTP 80 Port，都會轉送封包到 ASP.NET Core

    listen 80;

    # 可透過空白區分，綁定多個 Domain

    server_name demo.johnwu.cc example.johnwu.cc;

    location / {

        proxy_pass http://portal/;

        include /etc/nginx/conf.d/default_proxy_settings;

    }

}



# 用 HTTPS 必須要有 SSL 憑證，如果沒有要綁定 SSL 可以把下面整段移除

server {

    # 只要是透過這些 Domain 連 HTTPS 443 Port，都會轉送封包到 ASP.NET Core

    listen 443 ssl;

    server_name demo.johnwu.cc;

    ssl_certificate /etc/nginx/ssl/demo.johnwu.cc_bundle.crt;

    ssl_certificate_key /etc/nginx/ssl/demo.johnwu.cc.key;



    location / {

        proxy_pass http://portal/;

        include /etc/nginx/conf.d/default_proxy_settings;

    }

}

Nginx 重新啟動:

# 檢查 Nginx 的設定是否有誤

nginx -t



# 若沒有錯誤，即可套用

nginx -s reload

可以參考:
https://support.microsoft.com/zh-tw/help/2971005/error-message-when-you-compile-applications-to-target-the-net-framewor

https://github.com/dotnet/standard/issues/542

for VS2017: 在 sln 檔的目錄下, 找 .vs\config\applicationhost.config

例如: 
D:\ASP.NET Project\S3_WEB4_NET\.vs\config\applicationhost.config


For VS2019: $(solutionDir)\.vs\{slnName}\config\applicationhost.config
例如:
D:\ASP.NET Project\S3_WEB4_NET\.vs\S3\config\applicationhost.config

Visual Studio 2019安裝篇
1. 主程式
https://visualstudio.microsoft.com/zh-hant/vs/?rr=https%3A%2F%2Fwww.google.com%2F

2. SVN套件
https://marketplace.visualstudio.com/items?itemName=VisualSVNLimited.VisualSVN-VS2019

3. .Net 放置到IIS要的額外設定
https://blog.johnwu.cc/article/iis-run-asp-net-core.html

C# 專案出現'SecurityProtocolType' 未包含 'Tls11' 的定義錯誤
 
變更專案建置的.Net Framework版本為4.5以上即可。
 
 

https://stackoverflow.com/questions/17186568/upload-from-ios-picture-to-net-app-rotate

 讀取某個參數來判斷            if (image_file.PropertyIdList.Contains(0x0112))
            {
                int rotationValue = image_file.GetPropertyItem(0x0112).Value[0];
                switch (rotationValue)
                {
                    case 1: // landscape, do nothing
                        break;

                    case 8: // rotated 90 right
                            // de-rotate:
                        image_file.RotateFlip(rotateFlipType: RotateFlipType.Rotate270FlipNone);
                        break;

                    case 3: // bottoms up
                        image_file.RotateFlip(rotateFlipType: RotateFlipType.Rotate180FlipNone);
                        break;

                    case 6: // rotated 90 left
                        image_file.RotateFlip(rotateFlipType: RotateFlipType.Rotate90FlipNone);

                        image_file.Save(Path + FileName);
                        break;
                }
            }

錯誤訊息：
WebForms UnobtrusiveValidationMode 需要 'jquery' 的 ScriptResourceMapping。請加入 ScriptResourceMapping 命名的 jquery (區分大小寫)。

解決方式：
在有用 validation 那頁的 Page_Load 加上，就恢復正常了
protected void Page_Load(object sender, EventArgs e)
{
     UnobtrusiveValidationMode = UnobtrusiveValidationMode.None;
}

參考來源：
https://blog.xuite.net/tolarku/blog/63451508-VS+2012+%E5%88%9D%E9%AB%94%E9%A9%97+-+%E9%9C%80%E8%A6%81+%27jquery%27+%E7%9A%84+ScriptResourceMapping+%E9%8C%AF%E8%AA%A4
https://www.c-sharpcorner.com/UploadFile/cd7c2e/enabling-unobtrusive-validation-mode-in-Asp-Net-4-5/

在加入 AD 的主機下, ASP.NET 執行的預設帳號是本機帳號的 IIS_IUSERS 哦.

IIS 7.0 之後 
用 HttpContext.Current.Request.UserHostAddress 抓的IP會是 
類似 fe80::b148:cddc:81cd:fd10%2 
這樣的IPv6 位址
如果要抓 IPv4 要特別改寫

參考
https://dotblogs.com.tw/hunterpo/2011/03/21/21991


HttpContext.Current.Request.UserHostAddress


暫時的替代方法
public static string GetClientIPv4() { string ipv4 = String.Empty; foreach (IPAddress ip in Dns.GetHostAddresses(GetClientIP())) { if (ip.AddressFamily.ToString() == "InterNetwork") { ipv4 = ip.ToString(); break; } } if (ipv4 != String.Empty) { return ipv4; } // 原作使用 Dns.GetHostName 方法取回的是 Server 端資訊，非 Client 端。 // 改寫為利用 Dns.GetHostEntry 方法，由獲取的 IPv6 位址反查 DNS 紀錄， // 再逐一判斷何者屬 IPv4 協定，即可轉為 IPv4 位址。 foreach (IPAddress ip in Dns.GetHostEntry(GetClientIP()).AddressList) //foreach (IPAddress ip in Dns.GetHostAddresses(Dns.GetHostName())) { if (ip.AddressFamily.ToString() == "InterNetwork") { ipv4 = ip.ToString(); break; } } return ipv4; } /// <summary> /// 取得客戶端主機位址 /// </summary> public static string GetClientIP() { if (null == HttpContext.Current.Request.ServerVariables["HTTP_VIA"]) { return HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]; } else { return HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"]; } }

請用系統管理員身分 開啟 cmd.exe

cd C:\Windows\Microsoft.Net\Framework\v2.0.50727

aspnet_regiis -pef "connectionStrings" "專案路徑"

aspnet_regiis -pef "appSettings" "專案路徑"

* 若出現 'aspnet_regiis'  不是內部或外部命令,可執行的程式或批次檔

先確認iis上專案的Framework版本
cd C:\Windows\Microsoft.Net\Framework\該版本的資料夾

若為v4.0.30319
cd C:\Windows\Microsoft.Net\Framework\v4.0.30319

應該就成功了

---------------------------------------

解密的部分

aspnet_regiis -pdf "connectionStrings" "專案路徑"

aspnet_regiis -pdf "appSettings" "專案路徑"