add tls logger example

Author: tewarid

examples/tls-logger/index.js

@@ -0,0 +1,50 @@
+var proxy = require("node-tcp-proxy");
+var util = require("util");
+var replace = require('buffer-replace');
+
+var serviceHosts = ["www.google.com", "www.google.com"];
+var servicePorts = [443, 443];
+
+var newProxy = proxy.createProxy(8080, serviceHosts, servicePorts, {
+    tls: "both",
+    upstream: function(context, data) {
+        log(context.proxySocket, data);
+        data = replace(data, "localhost:8080", "www.google.com");
+        return data;
+    },
+    downstream: function(context, data) {
+        log(context.serviceSocket, data);
+        data = replace(data, "www.google.com", "localhost:8080");
+        return data;
+    },
+    serviceHostSelected: function(proxySocket, i) {
+        console.log(util.format("Service host %s:%s selected for client %s:%s.",
+            serviceHosts[i],
+            servicePorts[i],
+            proxySocket.remoteAddress,
+            proxySocket.remotePort));
+        // use your own strategy to calculate i
+        return i;
+    }
+});
+
+function log(socket, data) {
+    console.log(util.format("%s:%s sent:",
+        socket.remoteAddress,
+        socket.remotePort));
+    console.log(data.toString('hex'));
+}
+
+console.log("Open https://localhost:8080 in the browser.");
+
+console.log("press Enter key to quit...");
+setTimeout(handleTimeout, 1000);
+function handleTimeout() {
+    var data = process.stdin.read(1);
+    if (data) {
+        console.log("bye.");
+        newProxy.end();
+        process.exit(0);
+    }
+    setTimeout(handleTimeout, 1000);
+}