fatsify核心功能示例测试!!!

node_modules/@fastify/forwarded/index.js

@@ -0,0 +1,59 @@
+/*!
+ * forwarded
+ * Copyright(c) 2014-2017 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict'
+
+/**
+ * Get all addresses in the request used in the `X-Forwarded-For` header.
+ */
+function forwarded (req) {
+  if (!req) {
+    throw new TypeError('argument req is required')
+  }
+
+  const header = req.headers['x-forwarded-for']
+  const socketAddr = req.socket.remoteAddress
+
+  if (!header || typeof header !== 'string') {
+    return [socketAddr]
+  } else if (header.indexOf(',') === -1) {
+    const remote = header.trim()
+    return (remote.length)
+      ? [socketAddr, remote]
+      : [socketAddr]
+  } else {
+    return parse(header, socketAddr)
+  }
+}
+
+function parse (header, socketAddr) {
+  const result = [socketAddr]
+
+  let end = header.length
+  let start = end
+  let char
+  let i
+
+  for (i = end - 1; i >= 0; --i) {
+    char = header[i]
+    if (char === ' ') {
+      (start === end) && (start = end = i)
+    } else if (char === ',') {
+      (start !== end) && result.push(header.slice(start, end))
+      start = end = i
+    } else {
+      start = i
+    }
+  }
+
+  (start !== end) && result.push(header.substring(start, end))
+
+  return result
+}
+
+module.exports = forwarded
+module.exports.default = forwarded
+module.exports.forwarded = forwarded