OPC DB server Project First Commit

2026-02-09 02:55:47 +00:00
commit 3181052619
53 changed files with 5719 additions and 0 deletions
--- a/.Notebook/BRIN
+++ b/.Notebook/BRIN
@@ -0,0 +1,137 @@
+1️⃣ BRIN 인덱스란?
+
+Block Range INdex 의 약자
+
+대용량 테이블에서 연속적인 값(순차적/시간적)에 최적화
+
+일반 B-Tree 인덱스보다 작고 빠르게 생성 가능
+
+하지만 랜덤값 검색에는 적합하지 않음
+
+💡 요약:
+
+특징	설명
+장점	작은 크기, 빠른 생성, 디스크 절약
+단점	랜덤/불규칙 값 검색 느림
+사용 예	날짜, 시퀀스, ID 등 순차적 값 컬럼
+2️⃣ BRIN 인덱스 생성 기본 문법
+CREATE INDEX index_name
+ON table_name USING brin (column_name);
+
+
+예제:
+
+CREATE INDEX brin_test_table_age
+ON test_table USING brin (age);
+
+
+test_table의 age 컬럼에 BRIN 인덱스 생성
+
+대량 데이터에서 범위 검색할 때 효율적
+
+3️⃣ BRIN 인덱스 옵션
+CREATE INDEX brin_test_table_age
+ON test_table USING brin (age)
+WITH (pages_per_range = 32);
+
+
+pages_per_range → 한 인덱스 범위에 몇 페이지를 묶을지 설정 (기본값 128)
+
+범위를 작게 하면 검색 정확도 ↑, 인덱스 크기 ↑
+
+범위를 크게 하면 인덱스 작고 빠름, 정확도 ↓
+
+4️⃣ 사용 예제
+범위 검색
+-- age가 30 이상 40 이하인 데이터 검색
+SELECT * FROM test_table
+WHERE age BETWEEN 30 AND 40;
+
+
+BRIN 인덱스를 생성하면 범위 검색이 빨라짐
+
+작은 테이블에서는 체감 안 될 수 있음 → 수십만~수백만 행 이상에서 효과적
+
+복합 컬럼 BRIN 인덱스
+CREATE INDEX brin_test_table_name_age
+ON test_table USING brin (name, age);
+
+
+여러 컬럼 순서대로 범위 기반 검색 가능
+
+💡 Tip
+
+BRIN 인덱스는 연속적인 값에서 진가
+
+순차적 시퀀스, 타임스탬프 컬럼에 주로 사용
+
+랜덤/고르게 분포된 값 → B-Tree 인덱스가 더 적합
+===========================================================================
+
+1️⃣ TimescaleDB란?
+
+PostgreSQL 기반 시계열(Time-Series) 데이터베이스 확장
+
+하이퍼테이블(Hypertable) 구조로 자동 파티셔닝
+
+시계열 데이터 삽입, 조회, 집계 최적화
+
+2️⃣ BRIN + TimescaleDB의 조합
+
+TimescaleDB는 내부적으로 하이퍼테이블 파티셔닝
+
+시계열 데이터는 시간 컬럼 기준으로 연속적이기 때문에
+
+BRIN 인덱스와 궁합이 매우 좋음
+
+💡 특징:
+
+특징	설명
+인덱스 크기	BRIN → 매우 작음
+삽입 속도	TimescaleDB → 초당 수십만~수백만 레코드 처리 가능
+조회 효율	시간 범위 쿼리 → BRIN + 하이퍼테이블 최적화
+3️⃣ 기본 사용법
+1) TimescaleDB 설치 후 extension 활성화
+-- PostgreSQL에서
+CREATE EXTENSION IF NOT EXISTS timescaledb;
+
+2) 테이블을 하이퍼테이블로 변환
+CREATE TABLE sensor_data (
+    time        TIMESTAMPTZ       NOT NULL,
+    device_id   INT               NOT NULL,
+    temperature DOUBLE PRECISION  NOT NULL
+);
+
+-- 하이퍼테이블로 변환 (시간 컬럼: time)
+SELECT create_hypertable('sensor_data', 'time');
+
+3) BRIN 인덱스 생성
+-- 시간 기준 BRIN 인덱스
+CREATE INDEX brin_sensor_time
+ON sensor_data USING brin (time);
+
+-- 필요시 device_id 추가 가능
+CREATE INDEX brin_sensor_device_time
+ON sensor_data USING brin (device_id, time);
+
+
+시간 컬럼 순차적 → BRIN 범위 검색에 최적화
+
+작은 인덱스로 수십억 행도 검색 가능
+
+4️⃣ 범위 조회 예제
+-- 특정 시간 범위 데이터 조회
+SELECT *
+FROM sensor_data
+WHERE time BETWEEN '2026-02-01 00:00:00' AND '2026-02-02 00:00:00';
+
+
+BRIN 인덱스 덕분에 빠른 범위 스캔 가능
+
+🔹 정리
+
+TimescaleDB = 시계열 최적화 + 자동 파티셔닝
+
+BRIN 인덱스 = 연속적 시간 컬럼에 최적화된 작은 범위 인덱스
+
+조합 = 대용량 시계열 데이터 + 낮은 디스크 사용 + 빠른 범위 쿼리
--- a/라이브러리설치.md
+++ b/라이브러리설치.md
@@ -0,0 +1,60 @@
+1️⃣ 프로젝트 폴더에서 NuGet 설치
+
+터미널에서 프로젝트 디렉토리로 이동:
+
+cd ~/projects/DbTest
+
+
+패키지 설치:
+
+dotnet add package OPCFoundation.NetStandard.Opc.Ua
+
+
+이 명령어가 NuGet에서 라이브러리 다운로드 + 프로젝트에 추가까지 해줌
+
+설치 후 출력 메시지에 Successfully added 확인
+
+2️⃣ 설치 확인
+dotnet list package
+
+
+출력 예시:
+
+Project 'DbTest' has the following package references
+   [net8.0]:
+   Top-level Package      Requested   Resolved
+   > OPCFoundation.NetStandard.Opc.Ua  1.4.365   1.4.365
+
+3️⃣ 테스트 코드
+
+설치 완료 후 간단한 OPC UA 연결 테스트 작성 가능:
+
+using Opc.Ua;
+using Opc.Ua.Client;
+using Opc.Ua.Configuration;
+
+class Program
+{
+    static async Task Main()
+    {
+        var config = new ApplicationConfiguration
+        {
+            ApplicationName = "ExperionClient",
+            ApplicationType = ApplicationType.Client,
+            SecurityConfiguration = new SecurityConfiguration
+            {
+                ApplicationCertificate = new CertificateIdentifier()
+            },
+            ClientConfiguration = new ClientConfiguration()
+        };
+        await config.Validate(ApplicationType.Client);
+
+        var endpointURL = "opc.tcp://<EXPERION_IP>:4840";
+        var selectedEndpoint = CoreClientUtils.SelectEndpoint(endpointURL, useSecurity: false);
+        var session = await Session.Create(config,
+            new ConfiguredEndpoint(null, selectedEndpoint, EndpointConfiguration.Create(config)),
+            false, "", 60000, null, null);
+
+        Console.WriteLine("Experion OPC UA 연결 성공!");
+    }
+}
--- a/.Notebook/OpcTest
+++ b/.Notebook/OpcTest
@@ -0,0 +1,400 @@
+Experion 서버 연결 테스트 코드를 작성해드리겠습니다!
+🚀 빠른 테스트 프로젝트 생성
+bashcd ~/projects
+mkdir OpcConnectionTest
+cd OpcConnectionTest
+
+# 콘솔 프로젝트 생성
+dotnet new console
+
+# .NET 8.0 고정
+dotnet new globaljson --sdk-version 8.0.123 --force
+
+# OPC UA 패키지 설치
+dotnet add package OPCFoundation.NetStandard.Opc.Ua
+dotnet add package OPCFoundation.NetStandard.Opc.Ua.Client
+
+📝 Program.cs
+csharpusing Opc.Ua;
+using Opc.Ua.Client;
+using Opc.Ua.Configuration;
+
+namespace OpcConnectionTest
+{
+    class Program
+    {
+        static async Task Main(string[] args)
+        {
+            Console.WriteLine("=== Experion OPC UA Connection Test ===\n");
+
+            // Experion 서버 정보 (VMware 환경)
+            string primaryEndpoint = "opc.tcp://192.168.xxx.xxx:4840";  // Primary 서버 IP
+            string secondaryEndpoint = "opc.tcp://192.168.xxx.xxx:4840"; // Secondary 서버 IP (있다면)
+
+            Console.WriteLine($"Primary Server: {primaryEndpoint}");
+            Console.WriteLine($"Secondary Server: {secondaryEndpoint}\n");
+
+            try
+            {
+                // 1. Application Configuration 생성
+                var config = new ApplicationConfiguration()
+                {
+                    ApplicationName = "OPC UA Test Client",
+                    ApplicationType = ApplicationType.Client,
+                    ApplicationUri = "urn:localhost:OpcUaTestClient",
+
+                    SecurityConfiguration = new SecurityConfiguration
+                    {
+                        ApplicationCertificate = new CertificateIdentifier
+                        {
+                            StoreType = "Directory",
+                            StorePath = "OPC Foundation/CertificateStores/MachineDefault"
+                        },
+                        AutoAcceptUntrustedCertificates = true, // 테스트용
+                        RejectSHA1SignedCertificates = false
+                    },
+
+                    TransportConfigurations = new TransportConfigurationCollection(),
+                    TransportQuotas = new TransportQuotas { OperationTimeout = 15000 },
+
+                    ClientConfiguration = new ClientConfiguration { DefaultSessionTimeout = 60000 },
+
+                    TraceConfiguration = new TraceConfiguration
+                    {
+                        OutputFilePath = "OpcUaTest.log",
+                        TraceMasks = 0 // 로그 레벨 (0: 없음, 1: Error, 511: 전부)
+                    }
+                };
+
+                await config.Validate(ApplicationType.Client);
+
+                // 2. Primary 서버 검색
+                Console.WriteLine("Step 1: Discovering Primary Server...");
+                var endpoints = await DiscoverEndpoints(primaryEndpoint);
+
+                if (endpoints == null || endpoints.Count == 0)
+                {
+                    Console.WriteLine("❌ No endpoints found on Primary server!");
+                    return;
+                }
+
+                Console.WriteLine($"✅ Found {endpoints.Count} endpoint(s)");
+                foreach (var ep in endpoints)
+                {
+                    Console.WriteLine($"  - {ep.EndpointUrl} ({ep.SecurityMode})");
+                }
+
+                // 3. Primary 서버 연결
+                Console.WriteLine("\nStep 2: Connecting to Primary Server...");
+                var session = await CreateSession(config, endpoints[0]);
+
+                if (session == null)
+                {
+                    Console.WriteLine("❌ Failed to create session!");
+                    return;
+                }
+
+                Console.WriteLine($"✅ Connected! Session ID: {session.SessionId}");
+
+                // 4. 서버 정보 읽기
+                Console.WriteLine("\nStep 3: Reading Server Information...");
+                await ReadServerInfo(session);
+
+                // 5. Redundancy 정보 읽기 (Experion Redundant 확인)
+                Console.WriteLine("\nStep 4: Checking Redundancy Support...");
+                await CheckRedundancy(session);
+
+                // 6. 샘플 태그 읽기 (있다면)
+                Console.WriteLine("\nStep 5: Reading Sample Tags...");
+                await ReadSampleTags(session);
+
+                // 7. 연결 종료
+                Console.WriteLine("\nStep 6: Closing connection...");
+                session.Close();
+                Console.WriteLine("✅ Connection closed successfully!");
+
+                // Secondary 서버도 테스트 (선택)
+                if (!string.IsNullOrEmpty(secondaryEndpoint) && secondaryEndpoint != primaryEndpoint)
+                {
+                    Console.WriteLine("\n\n=== Testing Secondary Server ===");
+                    await TestSecondaryServer(config, secondaryEndpoint);
+                }
+
+                Console.WriteLine("\n✅ All tests completed!");
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"\n❌ Error: {ex.Message}");
+                Console.WriteLine($"Stack: {ex.StackTrace}");
+            }
+
+            Console.WriteLine("\nPress any key to exit...");
+            Console.ReadKey();
+        }
+
+        // Endpoint 검색
+        static async Task<EndpointDescriptionCollection> DiscoverEndpoints(string serverUrl)
+        {
+            try
+            {
+                var endpointConfiguration = EndpointConfiguration.Create();
+                endpointConfiguration.OperationTimeout = 10000;
+
+                using (var client = DiscoveryClient.Create(new Uri(serverUrl), endpointConfiguration))
+                {
+                    var endpoints = await client.GetEndpointsAsync(null);
+                    return endpoints;
+                }
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"Discovery failed: {ex.Message}");
+                return null;
+            }
+        }
+
+        // 세션 생성
+        static async Task<ISession> CreateSession(ApplicationConfiguration config, EndpointDescription endpoint)
+        {
+            try
+            {
+                var endpointConfiguration = EndpointConfiguration.Create(config);
+                var configuredEndpoint = new ConfiguredEndpoint(null, endpoint, endpointConfiguration);
+
+                var session = await Session.Create(
+                    config,
+                    configuredEndpoint,
+                    false,
+                    config.ApplicationName,
+                    60000,
+                    new UserIdentity(new AnonymousIdentityToken()), // 익명 인증
+                    null
+                );
+
+                return session;
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"Session creation failed: {ex.Message}");
+                return null;
+            }
+        }
+
+        // 서버 정보 읽기
+        static async Task ReadServerInfo(ISession session)
+        {
+            try
+            {
+                // Server Status 노드 읽기
+                var nodeId = new NodeId(Objects.Server_ServerStatus);
+                var value = await Task.Run(() => session.ReadValue(nodeId));
+
+                Console.WriteLine($"Server Status: {value.Value}");
+
+                // Server State 읽기
+                var stateNodeId = new NodeId(Variables.Server_ServerStatus_State);
+                var stateValue = await Task.Run(() => session.ReadValue(stateNodeId));
+                Console.WriteLine($"Server State: {stateValue.Value}");
+
+                // Current Time 읽기
+                var timeNodeId = new NodeId(Variables.Server_ServerStatus_CurrentTime);
+                var timeValue = await Task.Run(() => session.ReadValue(timeNodeId));
+                Console.WriteLine($"Server Current Time: {timeValue.Value}");
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"Failed to read server info: {ex.Message}");
+            }
+        }
+
+        // Redundancy 지원 확인
+        static async Task CheckRedundancy(ISession session)
+        {
+            try
+            {
+                // ServiceLevel 읽기 (Primary: 200+, Secondary: <200)
+                var serviceLevelNode = new NodeId(Variables.Server_ServiceLevel);
+                var serviceLevel = await Task.Run(() => session.ReadValue(serviceLevelNode));
+                
+                byte level = Convert.ToByte(serviceLevel.Value);
+                Console.WriteLine($"Service Level: {level}");
+
+                if (level >= 200)
+                {
+                    Console.WriteLine("✅ This is PRIMARY server");
+                }
+                else if (level > 0)
+                {
+                    Console.WriteLine("⚠️  This is SECONDARY server");
+                }
+                else
+                {
+                    Console.WriteLine("ℹ️  Standalone server (no redundancy)");
+                }
+
+                // ServerRedundancy 노드 확인
+                var redundancyNode = new NodeId(Objects.Server_ServerRedundancy);
+                var redundancyValue = await Task.Run(() => session.ReadValue(redundancyNode));
+                Console.WriteLine($"Redundancy Support: {redundancyValue.StatusCode}");
+
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"Redundancy check failed: {ex.Message}");
+                Console.WriteLine("ℹ️  Server may not support redundancy");
+            }
+        }
+
+        // 샘플 태그 읽기
+        static async Task ReadSampleTags(ISession session)
+        {
+            try
+            {
+                // Browse root folder
+                var browser = new Browser(session)
+                {
+                    BrowseDirection = BrowseDirection.Forward,
+                    ReferenceTypeId = ReferenceTypeIds.HierarchicalReferences,
+                    IncludeSubtypes = true,
+                    NodeClassMask = (int)NodeClass.Variable | (int)NodeClass.Object,
+                    ResultMask = (uint)BrowseResultMask.All
+                };
+
+                // Objects 폴더 탐색
+                var references = browser.Browse(ObjectIds.ObjectsFolder);
+
+                Console.WriteLine($"Found {references.Count} nodes in Objects folder:");
+                int count = 0;
+                foreach (var reference in references)
+                {
+                    Console.WriteLine($"  - {reference.DisplayName} ({reference.NodeClass})");
+                    
+                    if (++count >= 10) // 처음 10개만 표시
+                    {
+                        Console.WriteLine("  ... (more)");
+                        break;
+                    }
+                }
+
+                // 특정 태그가 있다면 읽기 (NodeId를 알고 있을 때)
+                // var tagNodeId = new NodeId("ns=2;s=YourTagName");
+                // var tagValue = await Task.Run(() => session.ReadValue(tagNodeId));
+                // Console.WriteLine($"Tag Value: {tagValue.Value}");
+
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"Tag reading failed: {ex.Message}");
+            }
+        }
+
+        // Secondary 서버 테스트
+        static async Task TestSecondaryServer(ApplicationConfiguration config, string serverUrl)
+        {
+            try
+            {
+                var endpoints = await DiscoverEndpoints(serverUrl);
+                
+                if (endpoints == null || endpoints.Count == 0)
+                {
+                    Console.WriteLine("❌ Secondary server not reachable");
+                    return;
+                }
+
+                Console.WriteLine($"✅ Secondary server found with {endpoints.Count} endpoint(s)");
+
+                var session = await CreateSession(config, endpoints[0]);
+                if (session != null)
+                {
+                    Console.WriteLine("✅ Secondary server connection successful!");
+                    
+                    // ServiceLevel 확인
+                    var serviceLevelNode = new NodeId(Variables.Server_ServiceLevel);
+                    var serviceLevel = await Task.Run(() => session.ReadValue(serviceLevelNode));
+                    Console.WriteLine($"Secondary Service Level: {serviceLevel.Value}");
+
+                    session.Close();
+                }
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"Secondary test failed: {ex.Message}");
+            }
+        }
+    }
+}
+
+⚙️ 설정 수정 포인트
+Line 15-16: Experion 서버 IP 주소 변경
+csharpstring primaryEndpoint = "opc.tcp://192.168.1.10:4840";  // ← 실제 IP
+string secondaryEndpoint = "opc.tcp://192.168.1.11:4840"; // ← 실제 IP
+
+🚀 실행
+bashcd ~/projects/OpcConnectionTest
+
+# 빌드
+dotnet build
+
+# 실행
+dotnet run
+```
+
+---
+
+## 📊 예상 출력
+```
+=== Experion OPC UA Connection Test ===
+
+Primary Server: opc.tcp://192.168.1.10:4840
+Secondary Server: opc.tcp://192.168.1.11:4840
+
+Step 1: Discovering Primary Server...
+✅ Found 2 endpoint(s)
+  - opc.tcp://192.168.1.10:4840 (SignAndEncrypt)
+  - opc.tcp://192.168.1.10:4840 (None)
+
+Step 2: Connecting to Primary Server...
+✅ Connected! Session ID: ns=1;i=123456
+
+Step 3: Reading Server Information...
+Server State: Running
+Server Current Time: 2026-02-08 15:30:45
+
+Step 4: Checking Redundancy Support...
+Service Level: 255
+✅ This is PRIMARY server
+Redundancy Support: Good
+
+Step 5: Reading Sample Tags...
+Found 15 nodes in Objects folder:
+  - Server (Object)
+  - DeviceSet (Object)
+  - ...
+
+Step 6: Closing connection...
+✅ Connection closed successfully!
+
+✅ All tests completed!
+
+🔧 문제 해결
+1. "Connection refused" 에러
+bash# 방화벽 확인
+sudo ufw status
+sudo ufw allow 4840/tcp
+
+# Experion 서버 ping 확인
+ping 192.168.1.10
+2. "Certificate validation failed"
+csharp// Line 25에서 이미 설정됨
+AutoAcceptUntrustedCertificates = true
+3. IP 주소 확인
+bash# VMware에서 Experion 서버 IP 확인
+# Windows 개발 PC에서
+ping experion-server-name
+
+📝 다음 단계
+연결 성공하면:
+
+✅ Tag 목록 가져오기
+✅ Tag 구독 (Subscription) 테스트
+✅ 실시간 데이터 수신 테스트
--- a/기본명령어.md
+++ b/기본명령어.md
@@ -0,0 +1 @@
+셧다운 : sudo shutdown now
--- a/.Notebook/설치패키지
+++ b/.Notebook/설치패키지
@@ -0,0 +1,174 @@
+현재 설치 상태 요약
+✅ 이미 설치된 것들
+1. 개발 환경
+✓ .NET SDK 8.0.123
+✓ .NET SDK 10.0 (aspnetcore-runtime-10.0)
+✓ dotnet-sdk-8.0
+2. 데이터베이스
+✓ PostgreSQL 16.11
+✓ TimescaleDB 2.25.0
+✓ postgresql-client-16
+3. 시스템 도구
+✓ Git 2.43.0
+✓ curl, wget
+✓ vim, nano
+✓ htop (시스템 모니터링)
+✓ tmux (터미널 멀티플렉서)
+
+🔧 추가로 설치해야 할 것들
+1. OPC UA 라이브러리 (NuGet)
+bashcd ~/projects/OpcUaMinimal
+dotnet add package OPCFoundation.NetStandard.Opc.Ua --version 1.5.374.126
+dotnet add package OPCFoundation.NetStandard.Opc.Ua.Client --version 1.5.374.126
+또는 더 간단한 라이브러리:
+bashdotnet add package Technosoftware.OpcUaNetStandardLibrary --version 7.0.0
+2. Entity Framework Core (PostgreSQL)
+bashdotnet add package Npgsql.EntityFrameworkCore.PostgreSQL --version 8.0.23
+dotnet add package Microsoft.EntityFrameworkCore.Design --version 8.0.23
+dotnet add package Microsoft.EntityFrameworkCore.Tools --version 8.0.23
+3. SignalR (실시간 통신)
+bashdotnet add package Microsoft.AspNetCore.SignalR.Client --version 8.0.23
+4. 기타 필수 라이브러리
+bash# Logging
+dotnet add package Serilog.AspNetCore --version 8.0.3
+dotnet add package Serilog.Sinks.File --version 6.0.0
+dotnet add package Serilog.Sinks.PostgreSQL --version 3.2.0
+
+# Configuration
+dotnet add package Microsoft.Extensions.Configuration.Json
+dotnet add package Microsoft.Extensions.Options.ConfigurationExtensions
+
+# Background Service
+dotnet add package Microsoft.Extensions.Hosting
+dotnet add package Microsoft.Extensions.Hosting.Systemd
+5. 시스템 서비스 관련 (Linux에서 필요)
+bash# systemd 개발 헤더 (이미 설치됨)
+✓ systemd-dev
+
+# 추가 필요한 것
+sudo apt update
+sudo apt install -y build-essential
+
+📁 프로젝트 구조 생성
+bashcd ~/projects
+mkdir -p OpcClientSystem
+cd OpcClientSystem
+
+# 1. Core 프로젝트
+dotnet new classlib -n Domain -o 01_Core/Domain
+dotnet new classlib -n Application -o 01_Core/Application
+
+# 2. Infrastructure 프로젝트
+dotnet new classlib -n Infrastructure -o 02_Infrastructure
+
+# 3. OPC Client Service
+dotnet new worker -n OpcDataCollector.Service -o 03_Service
+
+# 4. Web API
+dotnet new webapi -n IndustrialAutomation.API -o 04_WebAPI
+
+# 5. Blazor Web (선택)
+dotnet new blazor -n IndustrialAutomation.Web -o 05_Web
+
+# Solution 파일 생성
+dotnet new sln -n OpcClientSystem
+
+# 프로젝트들을 Solution에 추가
+dotnet sln add 01_Core/Domain/Domain.csproj
+dotnet sln add 01_Core/Application/Application.csproj
+dotnet sln add 02_Infrastructure/Infrastructure.csproj
+dotnet sln add 03_Service/OpcDataCollector.Service/OpcDataCollector.Service.csproj
+dotnet sln add 04_WebAPI/IndustrialAutomation.API/IndustrialAutomation.API.csproj
+
+🗄️ PostgreSQL 설정
+DB 생성 (아직 안 했다면)
+bashsudo -u postgres psql
+
+# PostgreSQL 프롬프트에서
+CREATE DATABASE scada;
+CREATE USER opcuser WITH PASSWORD 'your_password';
+GRANT ALL PRIVILEGES ON DATABASE scada TO opcuser;
+
+# TimescaleDB 확장 활성화
+\c scada
+CREATE EXTENSION IF NOT EXISTS timescaledb;
+
+\q
+연결 테스트
+bashpsql -h localhost -U opcuser -d scada
+# 비밀번호 입력 후 연결 확인
+
+🔐 환경 변수 설정
+bash# ~/.bashrc 또는 ~/.profile에 추가
+echo 'export ConnectionStrings__DefaultConnection="Host=localhost;Database=scada;Username=opcuser;Password=your_password"' >> ~/.bashrc
+source ~/.bashrc
+
+🚀 개발 시작 체크리스트
+✅ 완료된 것
+
+ Ubuntu Server 24.04 설치
+ PostgreSQL 16 설치
+ TimescaleDB 설치
+ .NET SDK 8.0 설치
+ Git 설치
+ VSCode Remote SSH 연결
+
+📝 해야 할 것
+
+ OPC UA NuGet 패키지 설치
+ EF Core PostgreSQL 패키지 설치
+ 프로젝트 구조 생성
+ Database 스키마 생성
+ OPC Client 기본 연결 테스트
+ Experion 서버 연결 확인
+
+
+🎯 다음 단계 제안
+bash# 1. 간단한 테스트 프로젝트부터 시작
+cd ~/projects
+dotnet new console -n OpcTest
+cd OpcTest
+
+# 2. OPC UA 패키지 설치
+dotnet add package OPCFoundation.NetStandard.Opc.Ua.Client
+
+# 3. Experion 연결 테스트 코드 작성
+# (다음 메시지에서 샘플 코드 제공 가능)
+
+# 4. 테스트 실행
+dotnet run
+필요한 것이 더 있으면 말씀해주세요!
+
+OPC UA 연결 테스트 코드?
+DB 스키마 생성 스크립트?
+전체 프로젝트 템플릿 코드?
+nuget 이미 설치했는데?오전 10:01아! 죄송합니다. NuGet은 .NET SDK에 포함되어 있으니 이미 사용 가능합니다.
+제가 말한 건 NuGet 패키지 관리자가 아니라 NuGet 패키지(라이브러리) 설치를 의미한 거였습니다.
+정리하면:
+✅ 이미 있는 것 (설치 완료)
+✓ NuGet (패키지 관리자) - .NET SDK에 포함
+✓ .NET SDK 8.0
+✓ PostgreSQL 16
+✓ TimescaleDB
+📦 해야 할 것 (프로젝트에 라이브러리 추가)
+프로젝트를 만든 후에:
+bashcd ~/projects/OpcUaMinimal  # 또는 새 프로젝트 경로
+
+# 이런 명령어들로 라이브러리 추가
+dotnet add package OPCFoundation.NetStandard.Opc.Ua.Client
+dotnet add package Npgsql.EntityFrameworkCore.PostgreSQL
+NuGet 자체는 설치할 필요 없고,
+NuGet을 통해 라이브러리들을 추가하면 됩니다!
+
+🚀 바로 시작할 수 있는 것
+bashcd ~/projects/OpcUaMinimal
+
+# OPC UA 라이브러리 추가
+dotnet add package OPCFoundation.NetStandard.Opc.Ua.Client
+
+# PostgreSQL 라이브러리 추가
+dotnet add package Npgsql.EntityFrameworkCore.PostgreSQL
+
+# 설치 확인
+dotnet list package
+이제 Experion 서버 연결 테스트 코드가 필요하신가요?
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -0,0 +1,16 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": ".NET Core Launch (Remote)",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build",
+            "program": "${workspaceFolder}/DbTest/bin/Debug/net8.0/DbTest.dll",
+            "args": [],
+            "cwd": "${workspaceFolder}",
+            "stopAtEntry": false,
+            "console": "integratedTerminal"
+        }
+    ]
+}
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -0,0 +1,15 @@
+{
+    "sqltools.connections": [
+        {
+            "ssh": "Disabled",
+            "previewLimit": 50,
+            "server": "localhost",
+            "port": 5432,
+            "driver": "PostgreSQL",
+            "name": "dbsvr",
+            "database": "postgres",
+            "username": "postgres",
+            "password": "postgres"
+        }
+    ]
+}
--- a/OpcConnectionTest/OpcConnectionTest.csproj
+++ b/OpcConnectionTest/OpcConnectionTest.csproj
@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="OPCFoundation.NetStandard.Opc.Ua" Version="1.5.378.106" />
+    <PackageReference Include="OPCFoundation.NetStandard.Opc.Ua.Client" Version="1.5.378.106" />
+  </ItemGroup>
+
+</Project>
--- a/OpcConnectionTest/Program.cs
+++ b/OpcConnectionTest/Program.cs
@@ -0,0 +1,191 @@
+// cd ~/projects/OpcConnectionTest
+
+// 기존 파일 삭제
+// rm Program.cs
+
+// # 새 파일 생성
+//cat > Program.cs << 'EOF'
+
+using Opc.Ua;
+using Opc.Ua.Client;
+using Opc.Ua.Configuration;
+
+namespace OpcConnectionTest
+{
+    class Program
+    {
+        static async Task Main(string[] args)
+        {
+            Console.WriteLine("=== Experion OPC UA Connection Test ===\n");
+
+            // ⚠️ Experion 서버 IP 주소 수정
+            string primaryEndpoint = "opc.tcp://192.168.0.20:4840";
+            string secondaryEndpoint = "opc.tcp://192.168.1.20:4840";
+
+            Console.WriteLine($"Primary: {primaryEndpoint}");
+            Console.WriteLine($"Secondary: {secondaryEndpoint}\n");
+
+            ISession? session = null;
+
+            try
+            {
+                var config = new ApplicationConfiguration()
+                {
+                    ApplicationName = "OPC Test",
+                    ApplicationType = ApplicationType.Client,
+                    ApplicationUri = "urn:OpcTest",
+                    SecurityConfiguration = new SecurityConfiguration
+                    {
+                        ApplicationCertificate = new CertificateIdentifier
+                        {
+                            StoreType = "Directory",
+                            StorePath = "OPC Foundation/CertificateStores/MachineDefault"
+                        },
+                        AutoAcceptUntrustedCertificates = true,
+                        RejectSHA1SignedCertificates = false
+                    },
+                    TransportConfigurations = new TransportConfigurationCollection(),
+                    TransportQuotas = new TransportQuotas { OperationTimeout = 15000 },
+                    ClientConfiguration = new ClientConfiguration { DefaultSessionTimeout = 60000 }
+                };
+
+                await config.ValidateAsync(ApplicationType.Client);
+
+                Console.WriteLine("Step 1: Discovering endpoints...");
+                var endpoints = await DiscoverAsync(config, primaryEndpoint);
+
+                if (endpoints.Count == 0)
+                {
+                    Console.WriteLine("❌ No endpoints found!");
+                    return;
+                }
+
+                Console.WriteLine($"✅ Found {endpoints.Count} endpoint(s)");
+
+                Console.WriteLine("\nStep 2: Connecting...");
+                session = await ConnectAsync(config, endpoints[0]);
+
+                if (session == null)
+                {
+                    Console.WriteLine("❌ Connection failed!");
+                    return;
+                }
+
+                Console.WriteLine($"✅ Connected! ID: {session.SessionId}");
+
+                Console.WriteLine("\nStep 3: Reading server info...");
+                await ReadInfoAsync(session);
+
+                Console.WriteLine("\nStep 4: Checking redundancy...");
+                await CheckRedundancyAsync(session);
+
+                Console.WriteLine("\n✅ Test completed!");
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"\n❌ Error: {ex.Message}");
+            }
+            finally
+            {
+                if (session != null)
+                {
+                    await session.CloseAsync();
+                    session.Dispose();
+                }
+            }
+
+            Console.WriteLine("\nPress Enter to exit...");
+            Console.ReadLine();
+        }
+
+        static async Task<EndpointDescriptionCollection> DiscoverAsync(
+            ApplicationConfiguration config, string url)
+        {
+            try
+            {
+                var epConfig = EndpointConfiguration.Create(config);
+                epConfig.OperationTimeout = 10000;
+
+                var client = await DiscoveryClient.CreateAsync(
+                    new Uri(url), epConfig, config, 
+                    DiagnosticsMasks.None, CancellationToken.None);
+
+                var eps = await client.GetEndpointsAsync(null);
+                client.Dispose();
+                return eps;
+            }
+            catch
+            {
+                return new EndpointDescriptionCollection();
+            }
+        }
+
+        static async Task<ISession?> ConnectAsync(
+            ApplicationConfiguration config, EndpointDescription ep)
+        {
+            try
+            {
+                var epConfig = EndpointConfiguration.Create(config);
+                var configEp = new ConfiguredEndpoint(null, ep, epConfig);
+
+                var channel = SessionChannel.Create(
+                    config,
+                    configEp.Description,
+                    configEp.Configuration,
+                    X509CertificateValidator.TolerateAll,
+                    null);
+
+                var sess = new Session(channel, config, configEp, null);
+
+                await sess.OpenAsync(
+                    config.ApplicationName, 60000,
+                    new UserIdentity(new AnonymousIdentityToken()),
+                    null, CancellationToken.None);
+
+                return sess;
+            }
+            catch
+            {
+                return null;
+            }
+        }
+
+        static async Task ReadInfoAsync(ISession s)
+        {
+            try
+            {
+                var v1 = await s.ReadValueAsync(new NodeId(Variables.Server_ServerStatus_State));
+                Console.WriteLine($"  State: {v1.Value}");
+
+                var v2 = await s.ReadValueAsync(new NodeId(Variables.Server_ServerStatus_CurrentTime));
+                Console.WriteLine($"  Time: {v2.Value}");
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"  Failed: {ex.Message}");
+            }
+        }
+
+        static async Task CheckRedundancyAsync(ISession s)
+        {
+            try
+            {
+                var v = await s.ReadValueAsync(new NodeId(Variables.Server_ServiceLevel));
+                byte level = Convert.ToByte(v.Value);
+                Console.WriteLine($"  Service Level: {level}");
+
+                if (level >= 200)
+                    Console.WriteLine("  ✅ PRIMARY server");
+                else if (level > 0)
+                    Console.WriteLine("  ⚠️ SECONDARY server");
+                else
+                    Console.WriteLine("  ℹ️ STANDALONE");
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"  Failed: {ex.Message}");
+            }
+        }
+    }
+}
+
--- a/OpcConnectionTest/global.json
+++ b/OpcConnectionTest/global.json
@@ -0,0 +1,5 @@
+{
+  "sdk": {
+    "version": "8.0.123"
+  }
+}
--- a/OpcConnectionTest/obj/Debug/net8.0/.NETCoreApp,Version=v8.0.AssemblyAttributes.cs
+++ b/OpcConnectionTest/obj/Debug/net8.0/.NETCoreApp,Version=v8.0.AssemblyAttributes.cs
@@ -0,0 +1,4 @@
+// <autogenerated />
+using System;
+using System.Reflection;
+[assembly: global::System.Runtime.Versioning.TargetFrameworkAttribute(".NETCoreApp,Version=v8.0", FrameworkDisplayName = ".NET 8.0")]
--- a/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.AssemblyInfo.cs
+++ b/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.AssemblyInfo.cs
@@ -0,0 +1,22 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+using System;
+using System.Reflection;
+
+[assembly: System.Reflection.AssemblyCompanyAttribute("OpcConnectionTest")]
+[assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
+[assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0")]
+[assembly: System.Reflection.AssemblyProductAttribute("OpcConnectionTest")]
+[assembly: System.Reflection.AssemblyTitleAttribute("OpcConnectionTest")]
+[assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
+
+// Generated by the MSBuild WriteCodeFragment class.
+
--- a/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.AssemblyInfoInputs.cache
+++ b/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.AssemblyInfoInputs.cache
@@ -0,0 +1 @@
+934b875e72b64b90c5572e45c51a754c2d824022123ba85dea23cfc05669d35b
--- a/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.GeneratedMSBuildEditorConfig.editorconfig
+++ b/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.GeneratedMSBuildEditorConfig.editorconfig
@@ -0,0 +1,13 @@
+is_global = true
+build_property.TargetFramework = net8.0
+build_property.TargetPlatformMinVersion = 
+build_property.UsingMicrosoftNETSdkWeb = 
+build_property.ProjectTypeGuids = 
+build_property.InvariantGlobalization = 
+build_property.PlatformNeutralAssembly = 
+build_property.EnforceExtendedAnalyzerRules = 
+build_property._SupportedPlatformList = Linux,macOS,Windows
+build_property.RootNamespace = OpcConnectionTest
+build_property.ProjectDir = /home/pacer/projects/OpcConnectionTest/
+build_property.EnableComHosting = 
+build_property.EnableGeneratedComInterfaceComImportInterop = 
--- a/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.GlobalUsings.g.cs
+++ b/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.GlobalUsings.g.cs
@@ -0,0 +1,8 @@
+// <auto-generated/>
+global using global::System;
+global using global::System.Collections.Generic;
+global using global::System.IO;
+global using global::System.Linq;
+global using global::System.Net.Http;
+global using global::System.Threading;
+global using global::System.Threading.Tasks;
--- a/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.assets.cache
+++ b/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.assets.cache
--- a/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.csproj.AssemblyReference.cache
+++ b/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.csproj.AssemblyReference.cache
--- a/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.csproj.CoreCompileInputs.cache
+++ b/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.csproj.CoreCompileInputs.cache
@@ -0,0 +1 @@
+859302d0d0eef299017c6ba5eb484ad68daade90e3fd76bac845760289b34007
--- a/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.csproj.FileListAbsolute.txt
+++ b/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.csproj.FileListAbsolute.txt
@@ -0,0 +1,5 @@
+/home/pacer/projects/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.csproj.AssemblyReference.cache
+/home/pacer/projects/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.GeneratedMSBuildEditorConfig.editorconfig
+/home/pacer/projects/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.AssemblyInfoInputs.cache
+/home/pacer/projects/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.AssemblyInfo.cs
+/home/pacer/projects/OpcConnectionTest/obj/Debug/net8.0/OpcConnectionTest.csproj.CoreCompileInputs.cache
--- a/OpcConnectionTest/obj/OpcConnectionTest.csproj.nuget.dgspec.json
+++ b/OpcConnectionTest/obj/OpcConnectionTest.csproj.nuget.dgspec.json
@@ -0,0 +1,71 @@
+{
+  "format": 1,
+  "restore": {
+    "/home/pacer/projects/OpcConnectionTest/OpcConnectionTest.csproj": {}
+  },
+  "projects": {
+    "/home/pacer/projects/OpcConnectionTest/OpcConnectionTest.csproj": {
+      "version": "1.0.0",
+      "restore": {
+        "projectUniqueName": "/home/pacer/projects/OpcConnectionTest/OpcConnectionTest.csproj",
+        "projectName": "OpcConnectionTest",
+        "projectPath": "/home/pacer/projects/OpcConnectionTest/OpcConnectionTest.csproj",
+        "packagesPath": "/home/pacer/.nuget/packages/",
+        "outputPath": "/home/pacer/projects/OpcConnectionTest/obj/",
+        "projectStyle": "PackageReference",
+        "configFilePaths": [
+          "/home/pacer/.nuget/NuGet/NuGet.Config"
+        ],
+        "originalTargetFrameworks": [
+          "net8.0"
+        ],
+        "sources": {
+          "https://api.nuget.org/v3/index.json": {}
+        },
+        "frameworks": {
+          "net8.0": {
+            "targetAlias": "net8.0",
+            "projectReferences": {}
+          }
+        },
+        "warningProperties": {
+          "warnAsError": [
+            "NU1605"
+          ]
+        }
+      },
+      "frameworks": {
+        "net8.0": {
+          "targetAlias": "net8.0",
+          "dependencies": {
+            "OPCFoundation.NetStandard.Opc.Ua": {
+              "target": "Package",
+              "version": "[1.5.378.106, )"
+            },
+            "OPCFoundation.NetStandard.Opc.Ua.Client": {
+              "target": "Package",
+              "version": "[1.5.378.106, )"
+            }
+          },
+          "imports": [
+            "net461",
+            "net462",
+            "net47",
+            "net471",
+            "net472",
+            "net48",
+            "net481"
+          ],
+          "assetTargetFallback": true,
+          "warn": true,
+          "frameworkReferences": {
+            "Microsoft.NETCore.App": {
+              "privateAssets": "all"
+            }
+          },
+          "runtimeIdentifierGraphPath": "/usr/lib/dotnet/sdk/8.0.123/PortableRuntimeIdentifierGraph.json"
+        }
+      }
+    }
+  }
+}
--- a/OpcConnectionTest/obj/OpcConnectionTest.csproj.nuget.g.props
+++ b/OpcConnectionTest/obj/OpcConnectionTest.csproj.nuget.g.props
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8" standalone="no"?>
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
+    <RestoreSuccess Condition=" '$(RestoreSuccess)' == '' ">True</RestoreSuccess>
+    <RestoreTool Condition=" '$(RestoreTool)' == '' ">NuGet</RestoreTool>
+    <ProjectAssetsFile Condition=" '$(ProjectAssetsFile)' == '' ">$(MSBuildThisFileDirectory)project.assets.json</ProjectAssetsFile>
+    <NuGetPackageRoot Condition=" '$(NuGetPackageRoot)' == '' ">/home/pacer/.nuget/packages/</NuGetPackageRoot>
+    <NuGetPackageFolders Condition=" '$(NuGetPackageFolders)' == '' ">/home/pacer/.nuget/packages/</NuGetPackageFolders>
+    <NuGetProjectStyle Condition=" '$(NuGetProjectStyle)' == '' ">PackageReference</NuGetProjectStyle>
+    <NuGetToolVersion Condition=" '$(NuGetToolVersion)' == '' ">6.8.1</NuGetToolVersion>
+  </PropertyGroup>
+  <ItemGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
+    <SourceRoot Include="/home/pacer/.nuget/packages/" />
+  </ItemGroup>
+</Project>
--- a/OpcConnectionTest/obj/OpcConnectionTest.csproj.nuget.g.targets
+++ b/OpcConnectionTest/obj/OpcConnectionTest.csproj.nuget.g.targets
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8" standalone="no"?>
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ImportGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
+    <Import Project="$(NuGetPackageRoot)system.text.json/10.0.2/buildTransitive/net8.0/System.Text.Json.targets" Condition="Exists('$(NuGetPackageRoot)system.text.json/10.0.2/buildTransitive/net8.0/System.Text.Json.targets')" />
+    <Import Project="$(NuGetPackageRoot)microsoft.extensions.logging.abstractions/10.0.2/buildTransitive/net8.0/Microsoft.Extensions.Logging.Abstractions.targets" Condition="Exists('$(NuGetPackageRoot)microsoft.extensions.logging.abstractions/10.0.2/buildTransitive/net8.0/Microsoft.Extensions.Logging.Abstractions.targets')" />
+    <Import Project="$(NuGetPackageRoot)microsoft.extensions.options/10.0.2/buildTransitive/net8.0/Microsoft.Extensions.Options.targets" Condition="Exists('$(NuGetPackageRoot)microsoft.extensions.options/10.0.2/buildTransitive/net8.0/Microsoft.Extensions.Options.targets')" />
+  </ImportGroup>
+</Project>
--- a/OpcConnectionTest/obj/project.assets.json
+++ b/OpcConnectionTest/obj/project.assets.json
--- a/OpcConnectionTest/obj/project.nuget.cache
+++ b/OpcConnectionTest/obj/project.nuget.cache
@@ -0,0 +1,32 @@
+{
+  "version": 2,
+  "dgSpecHash": "KrguJvkD41Un9qS/sxFwULOR3owX1Gzwg9Kz5TmdqikJypnpz2UYGOX4knjW3w4fcsh2k1y/V+pMLyI7ALdxig==",
+  "success": true,
+  "projectFilePath": "/home/pacer/projects/OpcConnectionTest/OpcConnectionTest.csproj",
+  "expectedPackageFiles": [
+    "/home/pacer/.nuget/packages/bitfaster.caching/2.5.4/bitfaster.caching.2.5.4.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.dependencyinjection/10.0.2/microsoft.extensions.dependencyinjection.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.dependencyinjection.abstractions/10.0.2/microsoft.extensions.dependencyinjection.abstractions.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.logging/10.0.2/microsoft.extensions.logging.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.logging.abstractions/10.0.2/microsoft.extensions.logging.abstractions.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.options/10.0.2/microsoft.extensions.options.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.primitives/10.0.2/microsoft.extensions.primitives.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/newtonsoft.json/13.0.4/newtonsoft.json.13.0.4.nupkg.sha512",
+    "/home/pacer/.nuget/packages/opcfoundation.netstandard.opc.ua/1.5.378.106/opcfoundation.netstandard.opc.ua.1.5.378.106.nupkg.sha512",
+    "/home/pacer/.nuget/packages/opcfoundation.netstandard.opc.ua.client/1.5.378.106/opcfoundation.netstandard.opc.ua.client.1.5.378.106.nupkg.sha512",
+    "/home/pacer/.nuget/packages/opcfoundation.netstandard.opc.ua.configuration/1.5.378.106/opcfoundation.netstandard.opc.ua.configuration.1.5.378.106.nupkg.sha512",
+    "/home/pacer/.nuget/packages/opcfoundation.netstandard.opc.ua.core/1.5.378.106/opcfoundation.netstandard.opc.ua.core.1.5.378.106.nupkg.sha512",
+    "/home/pacer/.nuget/packages/opcfoundation.netstandard.opc.ua.gds.client.common/1.5.378.106/opcfoundation.netstandard.opc.ua.gds.client.common.1.5.378.106.nupkg.sha512",
+    "/home/pacer/.nuget/packages/opcfoundation.netstandard.opc.ua.gds.server.common/1.5.378.106/opcfoundation.netstandard.opc.ua.gds.server.common.1.5.378.106.nupkg.sha512",
+    "/home/pacer/.nuget/packages/opcfoundation.netstandard.opc.ua.security.certificates/1.5.378.106/opcfoundation.netstandard.opc.ua.security.certificates.1.5.378.106.nupkg.sha512",
+    "/home/pacer/.nuget/packages/opcfoundation.netstandard.opc.ua.server/1.5.378.106/opcfoundation.netstandard.opc.ua.server.1.5.378.106.nupkg.sha512",
+    "/home/pacer/.nuget/packages/opcfoundation.netstandard.opc.ua.types/1.5.378.106/opcfoundation.netstandard.opc.ua.types.1.5.378.106.nupkg.sha512",
+    "/home/pacer/.nuget/packages/system.collections.immutable/10.0.2/system.collections.immutable.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/system.diagnostics.diagnosticsource/10.0.2/system.diagnostics.diagnosticsource.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/system.formats.asn1/10.0.2/system.formats.asn1.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/system.io.pipelines/10.0.2/system.io.pipelines.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/system.text.encodings.web/10.0.2/system.text.encodings.web.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/system.text.json/10.0.2/system.text.json.10.0.2.nupkg.sha512"
+  ],
+  "logs": []
+}
--- a/OpcUaMinimal/OpcUaMinimal.csproj
+++ b/OpcUaMinimal/OpcUaMinimal.csproj
@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="OPCFoundation.NetStandard.Opc.Ua" Version="1.5.378.106" />
+  </ItemGroup>
+
+</Project>
--- a/OpcUaMinimal/Program.cs
+++ b/OpcUaMinimal/Program.cs
@@ -0,0 +1,68 @@
+using System;
+using System.Threading.Tasks;
+using Opc.Ua;
+using Opc.Ua.Client;
+using Opc.Ua.Configuration;
+
+class Program
+{
+    static async Task Main()
+    {
+        try
+        {
+            // 1️⃣ Application 설정
+            var config = new ApplicationConfiguration
+            {
+                ApplicationName = "OpcUaMinimalClient",
+                ApplicationType = ApplicationType.Client,
+                SecurityConfiguration = new SecurityConfiguration
+                {
+                    AutoAcceptUntrustedCertificates = true, // 테스트용
+                    RejectSHA1SignedCertificates = false
+                },
+                TransportQuotas = new TransportQuotas
+                {
+                    OperationTimeout = 15000
+                },
+                ClientConfiguration = new ClientConfiguration
+                {
+                    DefaultSessionTimeout = 60000
+                }
+            };
+
+            await config.Validate(ApplicationType.Client);
+
+            // 2️⃣ Endpoint 설정
+            var endpointUrl = "opc.tcp://192.168.0.20:4840"; // Experion 서버
+            var selectedEndpoint = CoreClientUtils.SelectEndpoint(endpointUrl, useSecurity: true);
+            var endpoint = new ConfiguredEndpoint(null, selectedEndpoint);
+
+            // 3️⃣ Session 생성
+            var userIdentity = new UserIdentity("mngr", "mngr");
+            var session = await Session.Create(
+                config,
+                endpoint,
+                false,
+                "MinimalClientSession",
+                60000,
+                userIdentity,
+                null
+            );
+
+            Console.WriteLine("✅ OPC UA 서버 연결 성공!");
+
+            // 4️⃣ Node 읽기 (예제 NodeId)
+            var nodeId = new NodeId("ns=1;s=shinam:p-6102.hzset.fieldvalue");
+            DataValue value = session.ReadValue(nodeId);
+            Console.WriteLine($"Node Value: {value.Value}");
+
+            // 5️⃣ 세션 종료
+            session.Close();
+            Console.WriteLine("세션 종료");
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine($"❌ 오류: {ex.Message}");
+        }
+    }
+}
--- a/OpcUaMinimal/TestService/Program.cs
+++ b/OpcUaMinimal/TestService/Program.cs
@@ -0,0 +1,7 @@
+using TestService;
+
+var builder = Host.CreateApplicationBuilder(args);
+builder.Services.AddHostedService<Worker>();
+
+var host = builder.Build();
+host.Run();
--- a/OpcUaMinimal/TestService/Properties/launchSettings.json
+++ b/OpcUaMinimal/TestService/Properties/launchSettings.json
@@ -0,0 +1,12 @@
+{
+  "$schema": "http://json.schemastore.org/launchsettings.json",
+  "profiles": {
+    "TestService": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "environmentVariables": {
+        "DOTNET_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}
--- a/OpcUaMinimal/TestService/TestService.csproj
+++ b/OpcUaMinimal/TestService/TestService.csproj
@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk.Worker">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <UserSecretsId>dotnet-TestService-32e4174a-e341-449d-b4e8-ed95b86df201</UserSecretsId>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Hosting" Version="8.0.1" />
+  </ItemGroup>
+</Project>
--- a/OpcUaMinimal/TestService/Worker.cs
+++ b/OpcUaMinimal/TestService/Worker.cs
@@ -0,0 +1,23 @@
+namespace TestService;
+
+public class Worker : BackgroundService
+{
+    private readonly ILogger<Worker> _logger;
+
+    public Worker(ILogger<Worker> logger)
+    {
+        _logger = logger;
+    }
+
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+    {
+        while (!stoppingToken.IsCancellationRequested)
+        {
+            if (_logger.IsEnabled(LogLevel.Information))
+            {
+                _logger.LogInformation("Worker running at: {time}", DateTimeOffset.Now);
+            }
+            await Task.Delay(1000, stoppingToken);
+        }
+    }
+}
--- a/OpcUaMinimal/TestService/appsettings.Development.json
+++ b/OpcUaMinimal/TestService/appsettings.Development.json
@@ -0,0 +1,8 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.Hosting.Lifetime": "Information"
+    }
+  }
+}
--- a/OpcUaMinimal/TestService/appsettings.json
+++ b/OpcUaMinimal/TestService/appsettings.json
@@ -0,0 +1,8 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.Hosting.Lifetime": "Information"
+    }
+  }
+}
--- a/OpcUaMinimal/TestService/obj/TestService.csproj.nuget.dgspec.json
+++ b/OpcUaMinimal/TestService/obj/TestService.csproj.nuget.dgspec.json
@@ -0,0 +1,67 @@
+{
+  "format": 1,
+  "restore": {
+    "/home/pacer/projects/OpcUaMinimal/TestService/TestService.csproj": {}
+  },
+  "projects": {
+    "/home/pacer/projects/OpcUaMinimal/TestService/TestService.csproj": {
+      "version": "1.0.0",
+      "restore": {
+        "projectUniqueName": "/home/pacer/projects/OpcUaMinimal/TestService/TestService.csproj",
+        "projectName": "TestService",
+        "projectPath": "/home/pacer/projects/OpcUaMinimal/TestService/TestService.csproj",
+        "packagesPath": "/home/pacer/.nuget/packages/",
+        "outputPath": "/home/pacer/projects/OpcUaMinimal/TestService/obj/",
+        "projectStyle": "PackageReference",
+        "configFilePaths": [
+          "/home/pacer/.nuget/NuGet/NuGet.Config"
+        ],
+        "originalTargetFrameworks": [
+          "net8.0"
+        ],
+        "sources": {
+          "https://api.nuget.org/v3/index.json": {}
+        },
+        "frameworks": {
+          "net8.0": {
+            "targetAlias": "net8.0",
+            "projectReferences": {}
+          }
+        },
+        "warningProperties": {
+          "warnAsError": [
+            "NU1605"
+          ]
+        }
+      },
+      "frameworks": {
+        "net8.0": {
+          "targetAlias": "net8.0",
+          "dependencies": {
+            "Microsoft.Extensions.Hosting": {
+              "target": "Package",
+              "version": "[8.0.1, )"
+            }
+          },
+          "imports": [
+            "net461",
+            "net462",
+            "net47",
+            "net471",
+            "net472",
+            "net48",
+            "net481"
+          ],
+          "assetTargetFallback": true,
+          "warn": true,
+          "frameworkReferences": {
+            "Microsoft.NETCore.App": {
+              "privateAssets": "all"
+            }
+          },
+          "runtimeIdentifierGraphPath": "/usr/lib/dotnet/sdk/8.0.123/PortableRuntimeIdentifierGraph.json"
+        }
+      }
+    }
+  }
+}
--- a/OpcUaMinimal/TestService/obj/TestService.csproj.nuget.g.props
+++ b/OpcUaMinimal/TestService/obj/TestService.csproj.nuget.g.props
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8" standalone="no"?>
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
+    <RestoreSuccess Condition=" '$(RestoreSuccess)' == '' ">True</RestoreSuccess>
+    <RestoreTool Condition=" '$(RestoreTool)' == '' ">NuGet</RestoreTool>
+    <ProjectAssetsFile Condition=" '$(ProjectAssetsFile)' == '' ">$(MSBuildThisFileDirectory)project.assets.json</ProjectAssetsFile>
+    <NuGetPackageRoot Condition=" '$(NuGetPackageRoot)' == '' ">/home/pacer/.nuget/packages/</NuGetPackageRoot>
+    <NuGetPackageFolders Condition=" '$(NuGetPackageFolders)' == '' ">/home/pacer/.nuget/packages/</NuGetPackageFolders>
+    <NuGetProjectStyle Condition=" '$(NuGetProjectStyle)' == '' ">PackageReference</NuGetProjectStyle>
+    <NuGetToolVersion Condition=" '$(NuGetToolVersion)' == '' ">6.8.1</NuGetToolVersion>
+  </PropertyGroup>
+  <ItemGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
+    <SourceRoot Include="/home/pacer/.nuget/packages/" />
+  </ItemGroup>
+  <ImportGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
+    <Import Project="$(NuGetPackageRoot)microsoft.extensions.configuration.usersecrets/8.0.1/buildTransitive/net6.0/Microsoft.Extensions.Configuration.UserSecrets.props" Condition="Exists('$(NuGetPackageRoot)microsoft.extensions.configuration.usersecrets/8.0.1/buildTransitive/net6.0/Microsoft.Extensions.Configuration.UserSecrets.props')" />
+  </ImportGroup>
+</Project>
--- a/OpcUaMinimal/TestService/obj/TestService.csproj.nuget.g.targets
+++ b/OpcUaMinimal/TestService/obj/TestService.csproj.nuget.g.targets
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8" standalone="no"?>
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ImportGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
+    <Import Project="$(NuGetPackageRoot)microsoft.extensions.options/8.0.2/buildTransitive/net6.0/Microsoft.Extensions.Options.targets" Condition="Exists('$(NuGetPackageRoot)microsoft.extensions.options/8.0.2/buildTransitive/net6.0/Microsoft.Extensions.Options.targets')" />
+    <Import Project="$(NuGetPackageRoot)microsoft.extensions.configuration.binder/8.0.2/buildTransitive/netstandard2.0/Microsoft.Extensions.Configuration.Binder.targets" Condition="Exists('$(NuGetPackageRoot)microsoft.extensions.configuration.binder/8.0.2/buildTransitive/netstandard2.0/Microsoft.Extensions.Configuration.Binder.targets')" />
+    <Import Project="$(NuGetPackageRoot)microsoft.extensions.logging.abstractions/8.0.2/buildTransitive/net6.0/Microsoft.Extensions.Logging.Abstractions.targets" Condition="Exists('$(NuGetPackageRoot)microsoft.extensions.logging.abstractions/8.0.2/buildTransitive/net6.0/Microsoft.Extensions.Logging.Abstractions.targets')" />
+    <Import Project="$(NuGetPackageRoot)microsoft.extensions.configuration.usersecrets/8.0.1/buildTransitive/net6.0/Microsoft.Extensions.Configuration.UserSecrets.targets" Condition="Exists('$(NuGetPackageRoot)microsoft.extensions.configuration.usersecrets/8.0.1/buildTransitive/net6.0/Microsoft.Extensions.Configuration.UserSecrets.targets')" />
+  </ImportGroup>
+</Project>
--- a/OpcUaMinimal/TestService/obj/project.assets.json
+++ b/OpcUaMinimal/TestService/obj/project.assets.json
--- a/OpcUaMinimal/TestService/obj/project.nuget.cache
+++ b/OpcUaMinimal/TestService/obj/project.nuget.cache
@@ -0,0 +1,37 @@
+{
+  "version": 2,
+  "dgSpecHash": "ZWQ21HZ+POqTdCWO4g+P6098SrAjfL+VZwp4ubdL0W4WcjcrOYY9D3mTiKpjwv2I1u/8M1jpFjbka3A66hh4lw==",
+  "success": true,
+  "projectFilePath": "/home/pacer/projects/OpcUaMinimal/TestService/TestService.csproj",
+  "expectedPackageFiles": [
+    "/home/pacer/.nuget/packages/microsoft.extensions.configuration/8.0.0/microsoft.extensions.configuration.8.0.0.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.configuration.abstractions/8.0.0/microsoft.extensions.configuration.abstractions.8.0.0.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.configuration.binder/8.0.2/microsoft.extensions.configuration.binder.8.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.configuration.commandline/8.0.0/microsoft.extensions.configuration.commandline.8.0.0.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.configuration.environmentvariables/8.0.0/microsoft.extensions.configuration.environmentvariables.8.0.0.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.configuration.fileextensions/8.0.1/microsoft.extensions.configuration.fileextensions.8.0.1.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.configuration.json/8.0.1/microsoft.extensions.configuration.json.8.0.1.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.configuration.usersecrets/8.0.1/microsoft.extensions.configuration.usersecrets.8.0.1.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.dependencyinjection/8.0.1/microsoft.extensions.dependencyinjection.8.0.1.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.dependencyinjection.abstractions/8.0.2/microsoft.extensions.dependencyinjection.abstractions.8.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.diagnostics/8.0.1/microsoft.extensions.diagnostics.8.0.1.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.diagnostics.abstractions/8.0.1/microsoft.extensions.diagnostics.abstractions.8.0.1.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.fileproviders.abstractions/8.0.0/microsoft.extensions.fileproviders.abstractions.8.0.0.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.fileproviders.physical/8.0.0/microsoft.extensions.fileproviders.physical.8.0.0.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.filesystemglobbing/8.0.0/microsoft.extensions.filesystemglobbing.8.0.0.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.hosting/8.0.1/microsoft.extensions.hosting.8.0.1.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.hosting.abstractions/8.0.1/microsoft.extensions.hosting.abstractions.8.0.1.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.logging/8.0.1/microsoft.extensions.logging.8.0.1.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.logging.abstractions/8.0.2/microsoft.extensions.logging.abstractions.8.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.logging.configuration/8.0.1/microsoft.extensions.logging.configuration.8.0.1.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.logging.console/8.0.1/microsoft.extensions.logging.console.8.0.1.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.logging.debug/8.0.1/microsoft.extensions.logging.debug.8.0.1.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.logging.eventlog/8.0.1/microsoft.extensions.logging.eventlog.8.0.1.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.logging.eventsource/8.0.1/microsoft.extensions.logging.eventsource.8.0.1.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.options/8.0.2/microsoft.extensions.options.8.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.options.configurationextensions/8.0.0/microsoft.extensions.options.configurationextensions.8.0.0.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.primitives/8.0.0/microsoft.extensions.primitives.8.0.0.nupkg.sha512",
+    "/home/pacer/.nuget/packages/system.diagnostics.eventlog/8.0.1/system.diagnostics.eventlog.8.0.1.nupkg.sha512"
+  ],
+  "logs": []
+}
--- a/OpcUaMinimal/global.json
+++ b/OpcUaMinimal/global.json
@@ -0,0 +1,5 @@
+{
+  "sdk": {
+    "version": "8.0.123"
+  }
+}
--- a/OpcUaMinimal/obj/Debug/net8.0/.NETCoreApp,Version=v8.0.AssemblyAttributes.cs
+++ b/OpcUaMinimal/obj/Debug/net8.0/.NETCoreApp,Version=v8.0.AssemblyAttributes.cs
@@ -0,0 +1,4 @@
+// <autogenerated />
+using System;
+using System.Reflection;
+[assembly: global::System.Runtime.Versioning.TargetFrameworkAttribute(".NETCoreApp,Version=v8.0", FrameworkDisplayName = ".NET 8.0")]
--- a/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.AssemblyInfo.cs
+++ b/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.AssemblyInfo.cs
@@ -0,0 +1,22 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+using System;
+using System.Reflection;
+
+[assembly: System.Reflection.AssemblyCompanyAttribute("OpcUaMinimal")]
+[assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
+[assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0")]
+[assembly: System.Reflection.AssemblyProductAttribute("OpcUaMinimal")]
+[assembly: System.Reflection.AssemblyTitleAttribute("OpcUaMinimal")]
+[assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
+
+// Generated by the MSBuild WriteCodeFragment class.
+
--- a/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.AssemblyInfoInputs.cache
+++ b/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.AssemblyInfoInputs.cache
@@ -0,0 +1 @@
+a745e6c33a6ca21dfa6cf7051fa0dbadc3b703f8cbec423b33c723d2901630c9
--- a/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.GeneratedMSBuildEditorConfig.editorconfig
+++ b/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.GeneratedMSBuildEditorConfig.editorconfig
@@ -0,0 +1,13 @@
+is_global = true
+build_property.TargetFramework = net8.0
+build_property.TargetPlatformMinVersion = 
+build_property.UsingMicrosoftNETSdkWeb = 
+build_property.ProjectTypeGuids = 
+build_property.InvariantGlobalization = 
+build_property.PlatformNeutralAssembly = 
+build_property.EnforceExtendedAnalyzerRules = 
+build_property._SupportedPlatformList = Linux,macOS,Windows
+build_property.RootNamespace = OpcUaMinimal
+build_property.ProjectDir = /home/pacer/projects/OpcUaMinimal/
+build_property.EnableComHosting = 
+build_property.EnableGeneratedComInterfaceComImportInterop = 
--- a/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.GlobalUsings.g.cs
+++ b/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.GlobalUsings.g.cs
@@ -0,0 +1,8 @@
+// <auto-generated/>
+global using global::System;
+global using global::System.Collections.Generic;
+global using global::System.IO;
+global using global::System.Linq;
+global using global::System.Net.Http;
+global using global::System.Threading;
+global using global::System.Threading.Tasks;
--- a/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.assets.cache
+++ b/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.assets.cache
--- a/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.csproj.AssemblyReference.cache
+++ b/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.csproj.AssemblyReference.cache
--- a/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.csproj.CoreCompileInputs.cache
+++ b/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.csproj.CoreCompileInputs.cache
@@ -0,0 +1 @@
+c2665c134369febb92699f9c637dee81bfc7cc4496d57ce2cf77c31a46183ed0
--- a/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.csproj.FileListAbsolute.txt
+++ b/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.csproj.FileListAbsolute.txt
@@ -0,0 +1,5 @@
+/home/pacer/projects/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.csproj.AssemblyReference.cache
+/home/pacer/projects/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.GeneratedMSBuildEditorConfig.editorconfig
+/home/pacer/projects/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.AssemblyInfoInputs.cache
+/home/pacer/projects/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.AssemblyInfo.cs
+/home/pacer/projects/OpcUaMinimal/obj/Debug/net8.0/OpcUaMinimal.csproj.CoreCompileInputs.cache
--- a/OpcUaMinimal/obj/OpcUaMinimal.csproj.nuget.dgspec.json
+++ b/OpcUaMinimal/obj/OpcUaMinimal.csproj.nuget.dgspec.json
@@ -0,0 +1,67 @@
+{
+  "format": 1,
+  "restore": {
+    "/home/pacer/projects/OpcUaMinimal/OpcUaMinimal.csproj": {}
+  },
+  "projects": {
+    "/home/pacer/projects/OpcUaMinimal/OpcUaMinimal.csproj": {
+      "version": "1.0.0",
+      "restore": {
+        "projectUniqueName": "/home/pacer/projects/OpcUaMinimal/OpcUaMinimal.csproj",
+        "projectName": "OpcUaMinimal",
+        "projectPath": "/home/pacer/projects/OpcUaMinimal/OpcUaMinimal.csproj",
+        "packagesPath": "/home/pacer/.nuget/packages/",
+        "outputPath": "/home/pacer/projects/OpcUaMinimal/obj/",
+        "projectStyle": "PackageReference",
+        "configFilePaths": [
+          "/home/pacer/.nuget/NuGet/NuGet.Config"
+        ],
+        "originalTargetFrameworks": [
+          "net8.0"
+        ],
+        "sources": {
+          "https://api.nuget.org/v3/index.json": {}
+        },
+        "frameworks": {
+          "net8.0": {
+            "targetAlias": "net8.0",
+            "projectReferences": {}
+          }
+        },
+        "warningProperties": {
+          "warnAsError": [
+            "NU1605"
+          ]
+        }
+      },
+      "frameworks": {
+        "net8.0": {
+          "targetAlias": "net8.0",
+          "dependencies": {
+            "OPCFoundation.NetStandard.Opc.Ua": {
+              "target": "Package",
+              "version": "[1.5.378.106, )"
+            }
+          },
+          "imports": [
+            "net461",
+            "net462",
+            "net47",
+            "net471",
+            "net472",
+            "net48",
+            "net481"
+          ],
+          "assetTargetFallback": true,
+          "warn": true,
+          "frameworkReferences": {
+            "Microsoft.NETCore.App": {
+              "privateAssets": "all"
+            }
+          },
+          "runtimeIdentifierGraphPath": "/usr/lib/dotnet/sdk/8.0.123/PortableRuntimeIdentifierGraph.json"
+        }
+      }
+    }
+  }
+}
--- a/OpcUaMinimal/obj/OpcUaMinimal.csproj.nuget.g.props
+++ b/OpcUaMinimal/obj/OpcUaMinimal.csproj.nuget.g.props
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8" standalone="no"?>
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
+    <RestoreSuccess Condition=" '$(RestoreSuccess)' == '' ">True</RestoreSuccess>
+    <RestoreTool Condition=" '$(RestoreTool)' == '' ">NuGet</RestoreTool>
+    <ProjectAssetsFile Condition=" '$(ProjectAssetsFile)' == '' ">$(MSBuildThisFileDirectory)project.assets.json</ProjectAssetsFile>
+    <NuGetPackageRoot Condition=" '$(NuGetPackageRoot)' == '' ">/home/pacer/.nuget/packages/</NuGetPackageRoot>
+    <NuGetPackageFolders Condition=" '$(NuGetPackageFolders)' == '' ">/home/pacer/.nuget/packages/</NuGetPackageFolders>
+    <NuGetProjectStyle Condition=" '$(NuGetProjectStyle)' == '' ">PackageReference</NuGetProjectStyle>
+    <NuGetToolVersion Condition=" '$(NuGetToolVersion)' == '' ">6.8.1</NuGetToolVersion>
+  </PropertyGroup>
+  <ItemGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
+    <SourceRoot Include="/home/pacer/.nuget/packages/" />
+  </ItemGroup>
+</Project>
--- a/OpcUaMinimal/obj/OpcUaMinimal.csproj.nuget.g.targets
+++ b/OpcUaMinimal/obj/OpcUaMinimal.csproj.nuget.g.targets
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8" standalone="no"?>
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ImportGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
+    <Import Project="$(NuGetPackageRoot)system.text.json/10.0.2/buildTransitive/net8.0/System.Text.Json.targets" Condition="Exists('$(NuGetPackageRoot)system.text.json/10.0.2/buildTransitive/net8.0/System.Text.Json.targets')" />
+    <Import Project="$(NuGetPackageRoot)microsoft.extensions.logging.abstractions/10.0.2/buildTransitive/net8.0/Microsoft.Extensions.Logging.Abstractions.targets" Condition="Exists('$(NuGetPackageRoot)microsoft.extensions.logging.abstractions/10.0.2/buildTransitive/net8.0/Microsoft.Extensions.Logging.Abstractions.targets')" />
+    <Import Project="$(NuGetPackageRoot)microsoft.extensions.options/10.0.2/buildTransitive/net8.0/Microsoft.Extensions.Options.targets" Condition="Exists('$(NuGetPackageRoot)microsoft.extensions.options/10.0.2/buildTransitive/net8.0/Microsoft.Extensions.Options.targets')" />
+  </ImportGroup>
+</Project>
--- a/OpcUaMinimal/obj/project.assets.json
+++ b/OpcUaMinimal/obj/project.assets.json
--- a/OpcUaMinimal/obj/project.nuget.cache
+++ b/OpcUaMinimal/obj/project.nuget.cache
@@ -0,0 +1,32 @@
+{
+  "version": 2,
+  "dgSpecHash": "HWo6QlR3m5TfXqI0ijUJ+5JDkxKB78ILczeTnl0obOg0WccZLjyNL7FVZIrQ/M4TC639cOomKKrMZCcKMatB2A==",
+  "success": true,
+  "projectFilePath": "/home/pacer/projects/OpcUaMinimal/OpcUaMinimal.csproj",
+  "expectedPackageFiles": [
+    "/home/pacer/.nuget/packages/bitfaster.caching/2.5.4/bitfaster.caching.2.5.4.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.dependencyinjection/10.0.2/microsoft.extensions.dependencyinjection.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.dependencyinjection.abstractions/10.0.2/microsoft.extensions.dependencyinjection.abstractions.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.logging/10.0.2/microsoft.extensions.logging.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.logging.abstractions/10.0.2/microsoft.extensions.logging.abstractions.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.options/10.0.2/microsoft.extensions.options.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/microsoft.extensions.primitives/10.0.2/microsoft.extensions.primitives.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/newtonsoft.json/13.0.4/newtonsoft.json.13.0.4.nupkg.sha512",
+    "/home/pacer/.nuget/packages/opcfoundation.netstandard.opc.ua/1.5.378.106/opcfoundation.netstandard.opc.ua.1.5.378.106.nupkg.sha512",
+    "/home/pacer/.nuget/packages/opcfoundation.netstandard.opc.ua.client/1.5.378.106/opcfoundation.netstandard.opc.ua.client.1.5.378.106.nupkg.sha512",
+    "/home/pacer/.nuget/packages/opcfoundation.netstandard.opc.ua.configuration/1.5.378.106/opcfoundation.netstandard.opc.ua.configuration.1.5.378.106.nupkg.sha512",
+    "/home/pacer/.nuget/packages/opcfoundation.netstandard.opc.ua.core/1.5.378.106/opcfoundation.netstandard.opc.ua.core.1.5.378.106.nupkg.sha512",
+    "/home/pacer/.nuget/packages/opcfoundation.netstandard.opc.ua.gds.client.common/1.5.378.106/opcfoundation.netstandard.opc.ua.gds.client.common.1.5.378.106.nupkg.sha512",
+    "/home/pacer/.nuget/packages/opcfoundation.netstandard.opc.ua.gds.server.common/1.5.378.106/opcfoundation.netstandard.opc.ua.gds.server.common.1.5.378.106.nupkg.sha512",
+    "/home/pacer/.nuget/packages/opcfoundation.netstandard.opc.ua.security.certificates/1.5.378.106/opcfoundation.netstandard.opc.ua.security.certificates.1.5.378.106.nupkg.sha512",
+    "/home/pacer/.nuget/packages/opcfoundation.netstandard.opc.ua.server/1.5.378.106/opcfoundation.netstandard.opc.ua.server.1.5.378.106.nupkg.sha512",
+    "/home/pacer/.nuget/packages/opcfoundation.netstandard.opc.ua.types/1.5.378.106/opcfoundation.netstandard.opc.ua.types.1.5.378.106.nupkg.sha512",
+    "/home/pacer/.nuget/packages/system.collections.immutable/10.0.2/system.collections.immutable.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/system.diagnostics.diagnosticsource/10.0.2/system.diagnostics.diagnosticsource.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/system.formats.asn1/10.0.2/system.formats.asn1.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/system.io.pipelines/10.0.2/system.io.pipelines.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/system.text.encodings.web/10.0.2/system.text.encodings.web.10.0.2.nupkg.sha512",
+    "/home/pacer/.nuget/packages/system.text.json/10.0.2/system.text.json.10.0.2.nupkg.sha512"
+  ],
+  "logs": []
+}
--- a/projects.sln
+++ b/projects.sln
@@ -0,0 +1,24 @@
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.5.2.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DbTest", "DbTest\DbTest.csproj", "{415DFA00-450B-897D-A776-6D5CCFDA841B}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{415DFA00-450B-897D-A776-6D5CCFDA841B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{415DFA00-450B-897D-A776-6D5CCFDA841B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{415DFA00-450B-897D-A776-6D5CCFDA841B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{415DFA00-450B-897D-A776-6D5CCFDA841B}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {A78BEBC4-47EE-4F8C-93B7-3AFD72593A85}
+	EndGlobalSection
+EndGlobal
				`@@ -0,0 +1 @@`
				`934b875e72b64b90c5572e45c51a754c2d824022123ba85dea23cfc05669d35b`
				`@@ -0,0 +1 @@`
				`859302d0d0eef299017c6ba5eb484ad68daade90e3fd76bac845760289b34007`
				`@@ -0,0 +1 @@`
				`a745e6c33a6ca21dfa6cf7051fa0dbadc3b703f8cbec423b33c723d2901630c9`
				`@@ -0,0 +1 @@`
				`c2665c134369febb92699f9c637dee81bfc7cc4496d57ce2cf77c31a46183ed0`