PowerShell小技巧之发送TCP请求

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GET / HTTP/1.1
Host:cn.bing.com

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代码如下：

        =====æ件åï¼Send-TcpRequest.ps1=====

######################################## 

# Send-TcpRequest.ps1 

## Send a TCP request to a remote computer, and return the response. 

## If you do not supply input to this script (via either the pipeline, or the 

## -InputObject parameter,) the script operates in interactive mode. 

## 

## Example: 

## 

## $http = @" 

## GET / HTTP/1.1 

## Host:cn.bing.com  

## `n`n 

## "@ 

## 

## $http | .\Send-TcpRequest cn.bing.com  80 

######################################## 

param(

        [string] $remoteHost = "localhost",

        [int] $port = 80,

        [switch] $UseSSL,

        [string] $inputObject,

        [int] $commandDelay = 100

     )

[string] $output = ""


## Store the input into an array that we can scan over. If there was no input, 

## then we will be in interactive mode. 

$currentInput = $inputObject

if(-not $currentInput)

{

    $SCRIPT:currentInput = @($input)

}

$scriptedMode = [bool] $currentInput


function Main

{

    ## Open the socket, and connect to the computer on the specified port 

    if(-not $scriptedMode)

    {

        write-host "Connecting to $remoteHost on port $port"

    }


    trap { Write-Error "Could not connect to remote computer: $_"; exit }

    $socket = new-object System.Net.Sockets.TcpClient($remoteHost, $port)


    if(-not $scriptedMode)

    {

        write-host "Connected. Press ^D followed by [ENTER] to exit.`n"

    }


    $stream = $socket.GetStream()


    if($UseSSL)

    {

        $sslStream = New-Object System.Net.Security.SslStream $stream,$false

        $sslStream.AuthenticateAsClient($remoteHost)

        $stream = $sslStream

    }


    $writer = new-object System.IO.StreamWriter $stream


    while($true)

    {

        ## Receive the output that has buffered so far 

        $SCRIPT:output += GetOutput


        ## If we're in scripted mode, send the commands, 

        ## receive the output, and exit. 

        if($scriptedMode)

        {

            foreach($line in $currentInput)

            {

                $writer.WriteLine($line)

                $writer.Flush()

                Start-Sleep -m $commandDelay

                $SCRIPT:output += GetOutput

            }


            break

        }

        ## If we're in interactive mode, write the buffered 

        ## output, and respond to input. 

        else

        {

            if($output)

            {

                foreach($line in $output.Split("`n"))

                {

                    write-host $line

                }

                $SCRIPT:output = ""

            }


            ## Read the user's command, quitting if they hit ^D 

            $command = read-host

            if($command -eq ([char] 4)) { break; }


            ## Otherwise, Write their command to the remote host 

            $writer.WriteLine($command)

            $writer.Flush()

        }

    }


    ## Close the streams 

    $writer.Close()

    $stream.Close()


    ## If we're in scripted mode, return the output 

    if($scriptedMode)

    {

        $output

    }

}


## Read output from a remote host 

function GetOutput

{

    ## Create a buffer to receive the response 

    $buffer = new-object System.Byte[] 1024

    $encoding = new-object System.Text.AsciiEncoding


    $outputBuffer = ""

    $foundMore = $false


    ## Read all the data available from the stream, writing it to the 

    ## output buffer when done. 

    do

    {

        ## Allow data to buffer for a bit 

        start-sleep -m 1000


        ## Read what data is available 

        $foundmore = $false

        $stream.ReadTimeout = 1000


        do

        {

            try

            {

                $read = $stream.Read($buffer, 0, 1024)


                if($read -gt 0)

                {

                    $foundmore = $true

                    $outputBuffer += ($encoding.GetString($buffer, 0, $read))

                }

            } catch { $foundMore = $false; $read = 0 }

        } while($read -gt 0)

    } while($foundmore)


    $outputBuffer

}

. Main 

该èæ¬ä½¿ç¨æ¹æ³å¦ä¸ï¼

$http = @"


GET / HTTP/1.1

Host:cn.bing.com

`n`n

"@

$http | .\Send-TcpRequest cn.bing.com 80

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