A Basic Powershell Webserver

Powershell_HTTP_Server.MD

This is a super SIMPLE example of how to create a very basic powershell webserver

# Http Server
$http = [System.Net.HttpListener]::new() 

# Hostname and port to listen on
$http.Prefixes.Add("http://localhost:8080/")

# Start the Http Server 
$http.Start()



# Log ready message to terminal 
if ($http.IsListening) {
    write-host " HTTP Server Ready!  " -f 'black' -b 'gre'
    write-host "now try going to $($http.Prefixes)" -f 'y'
    write-host "then try going to $($http.Prefixes)other/path" -f 'y'
}


# INFINTE LOOP
# Used to listen for requests
while ($http.IsListening) {



    # Get Request Url
    # When a request is made in a web browser the GetContext() method will retuen the request url
    # Our ROUTE EXAMPLE's will use this to decide how to respond
    $context = $http.GetContext()


    # ROUTE EXAMPLE 1
    # method = 'GET' and url = '/'
    if ($context.Request.HttpMethod -eq 'GET' -and $context.Request.RawUrl -eq '/') {

        # We can log the request to the terminal
        write-host "$($context.Request.UserHostAddress)  =>  $($context.Request.Url)" -f 'mag'

        # the html/data you want to send to the browser
        # you could replace this with ( Get-Content "C:\some\path\index.html" | Out-String )
        [string]$html = "<h1>A Powershell Webserver</h1><p>Root Route</p>" 
        
        #resposed to the request
        $buffer = [System.Text.Encoding]::UTF8.GetBytes($html) # convert htmtl to bytes
        $context.Response.ContentLength64 = $buffer.Length
        $context.Response.OutputStream.Write($buffer, 0, $buffer.Length) #stream to broswer
        $context.Response.OutputStream.Close() # close the response
    
    }



    # ROUTE EXAMPLE 2
    # method = 'GET' and url = '/other/path'
    if ($context.Request.HttpMethod -eq 'GET' -and $context.Request.RawUrl -eq '/other/path') {

        # We can log the request to the terminal
        write-host "$($context.Request.UserHostAddress)  =>  $($context.Request.Url)" -f 'mag'

        # the html/data you want to send to the browser
        # you could replace this with ( Get-Content "C:\some\path\index.html" | Out-String )
        [string]$html = "<h1>A Powershell Webserver</h1><p>Some Other Route</p>" 

        #resposed to the request
        $buffer = [System.Text.Encoding]::UTF8.GetBytes($html) # convert htmtl to bytes
        $context.Response.ContentLength64 = $buffer.Length
        $context.Response.OutputStream.Write($buffer, 0, $buffer.Length) #stream to broswer
        $context.Response.OutputStream.Close() # close the response
    
    }

    # powershell will continue looping and listen for new requests...

} 

# Note:
# To end the loop you have to kill the powershell terminal. ctrl-c wont work :/