A pure network printer can happily disappear unobtrusively into a corner of the room and serve multiple users on the LAN. The convenience, flexibility, and invisibility of network printers is one reason why they have replaced their USB counterparts in many offices. Thanks to a mini computer Raspberry Pi, which can provide a print server service for your old USB hulk, the old printer has now a new function. With a wireless adapter plugged into your rPi (or by using rPi3), the location of your printer depends only on wireless reception and a suitable power supply.
A short list over Hypertext Transfer Protocol status codes (HTTP/1.1).