Basic Webserver 1

<#
This creates a web server on port 8080
It servers up output from this script.
example: http://localhost:8080/hello

This does not server files or directories
#>
$routes = @{
    "/hello" = { return '<html><body>Hello world!</body></html>' }
}

$url = 'http://localhost:8080/'
$listener = New-Object System.Net.HttpListener
$listener.Prefixes.Add($url)
$listener.Start()

Write-Host "Listening at $url..."

while ($listener.IsListening)
{
    $context = $listener.GetContext()
    $requestUrl = $context.Request.Url
    $response = $context.Response

    Write-Host ''
    Write-Host "> $requestUrl"

    $localPath = $requestUrl.LocalPath
    $route = $routes.Get_Item($requestUrl.LocalPath)

    if ($route -eq $null)
    {
        $response.StatusCode = 404
    }
    else
    {
        $content = & $route
        $buffer = [System.Text.Encoding]::UTF8.GetBytes($content)
        $response.ContentLength64 = $buffer.Length
        $response.OutputStream.Write($buffer, 0, $buffer.Length)
    }

    $response.Close()

    $responseStatus = $response.StatusCode
    Write-Host "< $responseStatus"
}