Powershell wget protocol violation -


i trying browse command on embedded webserver using wget / invoke-webrequest. how can error avoided?

wget : server committed protocol violation. section=responseheader detail=cr must followed lf

already tried multiple things, example below without success:

[system.net.servicepointmanager]::servercertificatevalidationcallback = {$true}

when using bits instead, error i'm getting

start-bitstransfer : server did not return file size. url might point dynamic content. content-length header not available in server's http reply.

thanks clem

setting servercertificatevalidationcallback delegate won't - ssl/tls not protocol being referred - protocol violation regards http headers (eg. long after tls has been established).

there's .net configuration flag called useunsafeheaderparsing controls whether such violations ignored or not.

using reflection, can set runtime. this technet forum answer give's great example of how in powershell, can wrap in nifty function below:

function set-useunsafeheaderparsing {     param(         [parameter(mandatory,parametersetname='enable')]         [switch]$enable,          [parameter(mandatory,parametersetname='disable')]         [switch]$disable     )      $shouldenable = $pscmdlet.parametersetname -eq 'enable'      $netassembly = [reflection.assembly]::getassembly([system.net.configuration.settingssection])      if($netassembly)     {         $bindingflags = [reflection.bindingflags] 'static,getproperty,nonpublic'         $settingstype = $netassembly.gettype('system.net.configuration.settingssectioninternal')          $instance = $settingstype.invokemember('section', $bindingflags, $null, $null, @())          if($instance)         {             $bindingflags = 'nonpublic','instance'             $useunsafeheaderparsingfield = $settingstype.getfield('useunsafeheaderparsing', $bindingflags)              if($useunsafeheaderparsingfield)             {               $useunsafeheaderparsingfield.setvalue($instance, $shouldenable)             }         }     } }

and use like:

set-useunsafeheaderparsing -enable

before calling invoke-webrequest


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