AWS SDK for .NET

S3 access using aws-sdk-net

To connect AWS SDK for .NET (AWSSDK.core version 3.7.400.53 or later) to K2 Cloud object storage, follow the next steps:

1. Get API access settings in the cloud management console. Click the user login in the top right corner, select Profile Get API access settings. In the downloaded file, specify your project ID for the*C2_PROJECT* variable.

2. Add the downloaded settings to the environment variables:

   Windows

   For Windows, convert the settings file and export the environment variables:

   C:\> c2rc-convert path\to\c2rc.sh path\to\c2rc.bat
   C:\> call path\to\c2rc.bat
   

   To convert settings, use c2rc-convert utility from c2-client package.

   Linux

   For Linux, export the environment variables:

   source path/to/c2rc.sh
   

3. Create a .NET project and add packages AWSSDK.Core and AWSSDK.S3 from the aws-sdk documentation to it:

   dotnet new console --name awsdotnets3 && cd awsdotnets3
   dotnet add package AWSSDK.Core
   dotnet add package AWSSDK.S3
   

4. Go to the project directory and create Program.cs file with the following block:

   Program.cs

   // Get the value of the S3_URL environment variable
   string? serviceUrl = Environment.GetEnvironmentVariable("S3_URL");
   
   // Check whether the S3_URL environment variable exists
   if (string.IsNullOrWhiteSpace(serviceUrl))
   {
      Console.WriteLine("Environment variable S3_URL is not set or empty.");
      return;
   }
   
   // Configure S3 client
   var config = new AmazonS3Config
   {
      SignatureVersion = "2",  // Use Signature Version 2
      ServiceURL = serviceUrl  // S3_URL
   };
   
   client = new AmazonS3Client(config);
   

5. Build and run the project as follows:

   dotnet build
   dotnet run