NZB
Template:Short description Template:Infobox file format
NZB is an XML-based file format for retrieving posts from NNTP (Usenet) servers.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> The format was conceived by the developers of the Newzbin.com Usenet Index.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> NZB is effective when used with search-capable websites.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> These websites create NZB files out of what is needed to be downloaded.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> Using this concept, headers would not be downloaded hence the NZB method is quicker and more bandwidth-efficient than traditional methods.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
Each Usenet message has a unique identifier called the "Message-ID".<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> When a large file is posted to a Usenet newsgroup, it is usually divided into multiple messages (called segments or parts) each having its own Message-ID.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> An NZB-capable Usenet client will read all needed Message-IDs from the NZB file, download them and decode the messages back into a binary file (usually using yEnc or Uuencode).<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
File format exampleEdit
The following is an example of an NZB 1.1 file.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
<syntaxhighlight lang="xml"> <?xml version="1.0" encoding="iso-8859-1" ?> <!DOCTYPE nzb PUBLIC "-//newzBin//DTD NZB 1.1//EN" "http://www.newzbin.com/DTD/nzb/nzb-1.1.dtd"> <nzb xmlns="http://www.newzbin.com/DTD/2003/nzb">
<head> <meta type="title">Your File!</meta> <meta type="tag">Example</meta> </head> <file poster="Joe Bloggs <[email protected]>;" date="1071674882" subject="Here's your file! abc-mr2a.r01 (1/2)"> <groups> <group>alt.binaries.newzbin</group> <group>alt.binaries.mojo</group> </groups> <segments> <segment bytes="102394" number="1">[email protected]</segment> <segment bytes="4501" number="2">[email protected]</segment> </segments> </file>
</nzb> </syntaxhighlight>