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Vendor coyotito
Package ipp
Short Description A clean, standards-compliant IPP (Internet Printing Protocol — RFC 8011/8010) client for PHP: discover network printers, read their capabilities, and submit print jobs — vendor and model agnostic.
License MIT

Keywords printing printer CUPS ipp rfc8011 rfc8010 ipp-everywhere airprint

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Informations about the package ipp

coyotito/ipp

A clean, standards-compliant IPP (Internet Printing Protocol) client for PHP. Discover network printers, read their capabilities, and submit print jobs — vendor and model agnostic, conformant to RFC 8011 (model/semantics) and RFC 8010 (encoding/transport).

No CUPS required: it speaks IPP directly over HTTP(S) to port 631.

Requirements

PHP 8.4+
guzzlehttp/guzzle — HTTP transport (swappable; any PSR-18 client works)
symfony/process — running ippfind for discovery
clue/socket-raw — pure-PHP mDNS discovery (needs ext-sockets)

Installation

Quick start

Discovery

Platform support

Discovery has two interchangeable strategies; pick what fits the host OS:

Strategy	How	macOS	Linux	Windows
`Discovery::ippfind()`	CUPS' `ippfind` (wraps Bonjour/`dns-sd` & Avahi)	✅ built-in	✅ via CUPS	❌ no CUPS by default
`Discovery::mdns()`	pure-PHP multicast DNS (`clue/socket-raw`)	✅	✅	✅
`…->manual(host)`	known IP/host, no discovery	✅	✅	✅

On Windows, use Discovery::mdns() — there is no ippfind. Make sure ext-sockets is enabled and allow the app inbound UDP in Windows Firewall, or fall back to manual(). (In an Electron/NativePHP app you can also discover with a Node mDNS library and feed the URI straight into Printer::connect().)

Both strategies, and the underlying command/socket runners, are interfaces — swap or fake them freely.

Transport

The default transport is Guzzle, but it only depends on the PSR-18 ClientInterface, so you can inject any client (or a Guzzle MockHandler in tests):

Notes for real network printers:

ipp:// maps to http, ipps:// to https (port 631 by default).
TLS verification is off by default (self-signed certs are the norm).
On a 426 Upgrade Required over cleartext, the transport retries once over TLS. Still, prefer the ipps:// URI for large jobs — some printers reject large cleartext uploads outright instead of asking to upgrade.

Printers don't always accept PDF

Many printers (most inkjets) do not list application/pdf in document-format-supported — they expect raster. Decide per printer:

Rasterizing PDF → PWG Raster/URF is your application's job (e.g. Ghostscript / mutool / CUPS filters); this package reports what the printer accepts and ships the bytes you give it with the right document-format.

Supported operations

Get-Printer-Attributes, Print-Job, Validate-Job, Create-Job, Send-Document, Get-Job-Attributes, Get-Jobs, Cancel-Job. The wire format supports every IPP value syntax, including 1setOf values and nested collections (media-col).

Conformance & testing

Strict to RFC 8011 and RFC 8010: version 2.0; operation-attributes first, with attributes-charset (utf-8) and attributes-natural-language as the first two attributes; correct printer-uri / requesting-user-name / document-format; full status-code handling.
Encoder/decoder round-trip tests, a binary response fixture, and cross-checked against ipptool and a real printer.

License

MIT.

All versions of ipp with dependencies

PHP Build Version

Package Version

Version v1.0.0 Release 05. Jun 2026
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Requires php Version ^8.4
clue/socket-raw Version ^1.6
guzzlehttp/guzzle Version ^7.9
symfony/process Version ^7.0

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