openprinting/goipp

Package goipp implements the IPP core protocol in pure Go (RFC 8010)

goipp

The goipp library is fairly complete implementation of IPP core protocol in pure Go. Essentially, it is IPP messages parser/composer. Transport is not implemented here, because Go standard library has an excellent built-in HTTP client, and it doesn't make a lot of sense to wrap it here.

High-level requests, like "print a file" are also not implemented, only the low-level stuff.

All documentation is on godoc.org -- follow the link above. Pull requests are welcomed, assuming they don't break existing API.

goipp's Issues

Get-Jobs returns invalid response

Consider the following code:

req := goipp.NewRequest(goipp.DefaultVersion, goipp.OpGetJobs, 1)
req.Operation.Add(goipp.MakeAttribute("attributes-charset", goipp.TagCharset, "utf-8"))
req.Operation.Add(goipp.MakeAttribute("attributes-natural-language", goipp.TagLanguage, "en-US"))
req.Operation.Add(goipp.MakeAttribute("which-jobs", goipp.TagKeyword, goipp.String("not-completed")))

// send request

What I get
The response is

Attributes: [
  {
    "Name": "job-id",
    "Values": [
      {
        "T": 33,
        "V": 128
      }
    ]
  },
  {
    "Name": "job-uri",
    "Values": [
      {
        "T": 69,
        "V": "ipps://EPSONB44453.local.:631/jobs/128"
      }
    ]
  },
  {
    "Name": "job-id",
    "Values": [
      {
        "T": 33,
        "V": 127
      }
    ]
  },
  {
    "Name": "job-uri",
    "Values": [
      {
        "T": 69,
        "V": "ipps://EPSONB44453.local.:631/jobs/127"
      }
    ]
  }
]

What I expect to get
The response should be logically grouped by the job. Currently we get 4 separate attributes and no easy way to tie them together, there should be a logical grouping as described in the spec:

The Printer object responds with one set of Job Object Attributes for each returned Job object

Example on how to print a PDF document

Hi,

Thanks for creating this awesome library!

I'm having some difficulties with printing a PDF document, Is it possible for you to provide an example for that?

Because I'm unsure what attributes I'll have to use and how I'll attach a document.

Thanks in advance,
Ramon