Merge pull request #84 from jpillora/patch-1

Create inject.js example

examples/inject.js

@@ -0,0 +1,37 @@
+var iface = process.argv[2];
+
+if(!iface) {
+    console.log("usage: node inject <interface>");
+    process.exit(1);
+}
+
+//first, lets watch for all ARP frames on eth0:
+// `tcpdump -i <interface> arp`
+
+//then lets send our custom frame
+// `node inject.js <interface>`
+
+var pcap = require("pcap"),
+    session = pcap.createSession(iface, "");
+
+var arpRequest = new Buffer([
+  0xff,0xff,0xff,0xff,0xff,0xff, //dst
+  0xf6,0xb5,0xc6,0x9b,0x43,0x35, //src
+  0x08,0x06, //type - arp
+  0x00,0x01, //htype - 0x0001 (ethernet)
+  0x08,0x00, //ptype - 0x8000 (ip)
+  0x06, //hlen
+  0x04, //plen
+  0x00,0x01, //op - (reply)
+  0xf6,0xb5,0xc6,0x9b,0x43,0x35, //hsrc
+  0x0a,0x00,0x00,0x01, //psrc 10.0.0.1
+  0x00,0x00,0x00,0x00,0x00,0x00, //hdst
+  0x0a,0x00,0x00,0x02  //pdst 10.0.0.2
+]);
+
+session.inject(arpRequest);
+
+console.log("sent ARP request");
+
+process.nextTick(process.exit);
+