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express-server/node_modules/packet-reader/README.md

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+node-packet-reader
+==================
+
+Handy little well tested module for reading length-prefixed binary packets.
+
+Since buffers come off a socket in randomly sized chunks you can't expect them to cleanly
+break on packet boundaries.  This module allows you to push buffers in and read
+full packets out the other side, so you can get to parsing right away and not have
+to manage concatenating partial buffers and searching through them for packets.
+
+## install
+
+` $ npm install packet-reader `
+
+## example
+
+```js
+var Reader = require('packet-reader')
+
+var reader = new Reader()
+//assuming you have a socket emitting `data` events
+socket.on('data', function(buffer) {
+  reader.addChunk(buffer)
+  var packet = reader.read()
+  while(packet) {
+    //do something with fully parsed packet
+  }
+})
+```
+
+
+here's a more full featured example:
+
+let's assume our "packet" for our protocol is 32-bit Big Endian length-prefixed strings
+so a "hello world" packet would look something like [length, string]
+`[0, 0, 0 0x0B, h, e, l, l, o, w, o, r, l, d]`
+
+```js
+var Transform = require('stream').Transform
+var Reader = require('packet-reader')
+var reader = new Reader()
+var parser = new Transform()
+parser._transform = function(chunk, encoding, cb) {
+  reader.addChunk(chunk)
+  var packet = reader.read()
+  while(packet) {
+    this.push(packet.toString('utf8'))
+    packet = reader.read()
+  }
+  cb()
+}
+
+var server = net.createServer(function(socket) {
+  socket.pipe(parser).pipe(stdout)
+})
+
+```
+
+There are a few config options for setting optional pre-length padding byte.  Read the tests for details.
+
+## License
+
+MIT
+
+Copyright 2015 Brian M. Carlson
+All rights reserved.
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.