add back examples

examples/bootstrap.js

@@ -0,0 +1,6 @@
+const DHT = require('../')
+
+// Set ephemeral: true so other peers do not add us to the peer list, simply bootstrap
+const bootstrap = new DHT({ ephemeral: true })
+
+bootstrap.bind(10001)

examples/find.js

@@ -0,0 +1,25 @@
+const DHT = require('../')
+const crypto = require('crypto')
+
+const hex = process.argv[2]
+const node = new DHT({ ephemeral: true, bootstrap: ['localhost:10001'] })
+
+run()
+
+async function run () {
+  const q = node.query(Buffer.from(hex, 'hex'), 'values')
+
+  for await (const data of q) {
+    if (data.value && sha256(data.value).toString('hex') === hex) {
+      // We found the value! Destroy the query stream as there is no need to continue.
+      console.log(hex, '-->', data.value.toString())
+      break
+    }
+  }
+
+  console.log('(query finished)')
+}
+
+function sha256 (val) {
+  return crypto.createHash('sha256').update(val).digest()
+}

examples/insert.js

@@ -0,0 +1,19 @@
+const DHT = require('../')
+const crypto = require('crypto')
+
+// Set ephemeral: true as we are not part of the network.
+const node = new DHT({ ephemeral: true, bootstrap: ['localhost:10001'] })
+const val = Buffer.from(process.argv[2])
+
+run()
+
+async function run () {
+  const q = node.query(sha256(val), 'values')
+  await q.finished()
+  await q.commit('values', val)
+  console.log('Inserted', sha256(val).toString('hex'))
+}
+
+function sha256 (val) {
+  return crypto.createHash('sha256').update(val).digest()
+}

examples/network.js

@@ -0,0 +1,36 @@
+const DHT = require('../')
+const crypto = require('crypto')
+
+// Let's create 100 dht nodes for our example.
+const swarm = []
+for (let i = 0; i < 100; i++) swarm[i] = createNode()
+
+function createNode () {
+  const node = new DHT({
+    bootstrap: [
+      'localhost:10001'
+    ]
+  })
+
+  const values = new Map()
+
+  node.on('request', function (req) {
+    if (req.command === 'values') {
+      if (req.update) {
+        const key = sha256(req.value).toString('hex')
+        values.set(key, req.value)
+        console.log('Storing', key, '-->', req.value.toString())
+        return req.reply(null)
+      }
+
+      const value = values.get(req.target.toString('hex'))
+      req.reply(value)
+    }
+  })
+
+  return node
+}
+
+function sha256 (val) {
+  return crypto.createHash('sha256').update(val).digest()
+}