Add request parameter

Synopsis

  param [--params <params>] [--header] <key> <value>

Examples

Issue an HTTP POST request

  params
  param mac ${net0/mac}
  param uuid ${uuid}
  param asset ${asset}
  chain http://boot.ipxe.org/demo/boot.php##params

Use a custom HTTP header

  params
  param --header Referer http://www.example.com
  chain http://boot.ipxe.org/demo/boot.php##params

Description

Add a request parameter with the specified key/value pair. If no request parameter list is specified, the default (unnamed) request parameter list will be used. If the –header option is specified then the parameter will be treated as a header parameter, otherwise the parameter will be treated as a form parameter.

Command status

Success	The request parameter was successfully added
Failure	The request parameter was not successfully added

Build options

This command is available only when the build option PARAM_CMD is enabled.

Notes

The most common use for request parameter lists is to generate HTTP POST requests. You can generate a POST request by appending ##params to the HTTP URI. For example, to send a complete PCI device listing:

  #!ipxe
  
  params
  :pciscan pciscan addr || goto pciscan_done
    param pcidev ${pci/${addr}.0.2}:${pci/${addr}.2.2}
    goto pciscan
  :pciscan_done
  chain http://192.168.0.1/boot/pcilist.php##params

You must create the request parameter list using the params command before attempting to create a request parameter using the param command.

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