fix: move static function from ip to the parse-udp module

Author: fabianbormann

lib/server/parse-udp.js

@@ -1,7 +1,30 @@
-import ipLib from 'ip'
 import common from '../common.js'
 import { equal } from 'uint8-util'
 
+function ipToString (buff, offset, length) {
+  offset = ~~offset
+  length = length || (buff.length - offset)
+
+  let result = []
+  if (length === 4) {
+    // IPv4
+    for (let i = 0; i < length; i++) {
+      result.push(buff[offset + i])
+    }
+    result = result.join('.')
+  } else if (length === 16) {
+    // IPv6
+    for (let i = 0; i < length; i += 2) {
+      result.push(buff.readUInt16BE(offset + i).toString(16))
+    }
+    result = result.join(':')
+    result = result.replace(/(^|:)0(:0)*:0(:|$)/, '$1::$3')
+    result = result.replace(/:{3,4}/, '::')
+  }
+
+  return result
+};
+
 export default function (msg, rinfo) {
   if (msg.length < 16) throw new Error('received packet is too short')
 
@@ -30,7 +53,7 @@ export default function (msg, rinfo) {
 
     const ip = msg.readUInt32BE(84) // optional
     params.ip = ip
-      ? ipLib.toString(ip)
+      ? ipToString(ip)
       : rinfo.address
 
     params.key = msg.readUInt32BE(88) // Optional: unique random key from client

package.json

@@ -35,7 +35,6 @@
     "compact2string": "^1.4.1",
     "cross-fetch-ponyfill": "^1.0.3",
     "debug": "^4.3.4",
-    "ip": "^2.0.1",
     "lru": "^3.1.0",
     "minimist": "^1.2.8",
     "once": "^1.4.0",