How can I run Go web applications on IIS?

Running Go Web Applications on IIS

Question:

Can Go web applications be deployed and run on IIS?

Answer:

Yes, it is possible to host Go web applications on IIS. However, additional setup is required compared to using the default approach in Azure.

Solution:

To enable IIS support for Go applications, follow these steps:

1. Install HttpPlatformHandler module: This module acts as a bridge between IIS and the Go runtime. Download and install it from the Microsoft Web Platform Installer.
2. Configure web.config: Create a new web.config file in your Go application's web root directory with the following content:

<code class="xml"><?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
        <handlers>
            <add name="httpplatformhandler" path="*" verb="*" modules="httpPlatformHandler" resourceType="Unspecified" />
        </handlers>
        <httpPlatform processPath="path/to/go.exe" arguments="run path/to/server.go" startupTimeLimit="60">
            <environmentVariables>
              <environmentVariable name="GOROOT" value="path/to/go" />
            </environmentVariables>
        </httpPlatform>
    </system.webServer>
</configuration></code>

3. Deploy your application: Build your Go application and copy the necessary files to the web root directory.
4. Run the application: Open IIS Manager, create a new website, and set it to point to your web application's web root directory.

Note: Installing the HttpPlatformHandler module eliminates the need for reverse proxies or FastCGI, which were previously used for this purpose.

Avoid Using ASP.NET Core Module:

While it is possible to use the ASP.NET Core module to host Go applications on IIS, it is not recommended. This approach has performance drawbacks and security issues, as described in the history of HttpPlatformHandler.

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