Added https support

.gitignore

@@ -18,3 +18,6 @@ src
 
 # Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736
 .glide/
+
+# keys
+*.pem

README.md

@@ -58,7 +58,7 @@ Basic implementation of proxy client may be found at https://github.com/GoMetric
 
 ## Usage
 
-Run server:
+* Run server (HTTP):
 
 ```bash
 statsd-http-proxy \
@@ -71,6 +71,21 @@ statsd-http-proxy \
 	--metric-prefix=prefix.subprefix
 ```
 
+* Run server (HTTPS):
+
+```bash
+statsd-http-proxy \
+	--verbose \
+	--http-host=127.0.0.1 \
+	--http-port=433 \
+	--tls-cert=cert.pem \
+	--tls-key=key.pem \
+	--statsd-host=127.0.0.1 \
+	--statsd-port=8125 \
+	--jwt-secret=somesecret \
+	--metric-prefix=prefix.subprefix
+```
+
 Print server version and exit:
 
 ```bash
@@ -79,19 +94,23 @@ statsd-http-proxy --version
 
 Command line arguments:
 
-| Parameter       | Description                          | Default value                                                                  |
-|-----------------|--------------------------------------|--------------------------------------------------------------------------------|
-| verbose         | Print debug info to stderr           | Optional. Default false                                                        |
-| http-host       | Host of HTTP server                  | Optional. Default 127.0.0.1. To accept connections on any interface, set to "" |
-| http-port       | Port of HTTP server                  | Optional. Default 80                                                           |
-| statsd-host     | Host of StatsD instance              | Optional. Default 127.0.0.1                                                    |
-| statsd-port     | Port of StatsD instance              | Optional. Default 8125                                                         |
-| jwt-secret      | JWT token secret                     | Optional. If not set, server accepts all connections                           |
-| metric-prefix   | Prefix, added to any metric name     | Optional. If not set, do not add prefix                                        |
-| version         | Print version of server and exit     | Optional                                                                       |
+| Parameter       | Description                          | Default value                                                                     |
+|-----------------|--------------------------------------|-----------------------------------------------------------------------------------|
+| verbose         | Print debug info to stderr           | Optional. Default false                                                           |
+| http-host       | Host of HTTP server                  | Optional. Default 127.0.0.1. To accept connections on any interface, set to ""    |
+| http-port       | Port of HTTP server                  | Optional. Default 80                                                              |
+| tls-cert        | TLS certificate for the HTTPS        | Optional. Default "" to use HTTP. If both tls-cert and tls-key set, HTTPS is used |
+| tls-key         | TLS private key for the HTTPS        | Optional. Default "" to use HTTP. If both tls-cert and tls-key set, HTTPS is used |
+| statsd-host     | Host of StatsD instance              | Optional. Default 127.0.0.1                                                       |
+| statsd-port     | Port of StatsD instance              | Optional. Default 8125                                                            |
+| jwt-secret      | JWT token secret                     | Optional. If not set, server accepts all connections                              |
+| metric-prefix   | Prefix, added to any metric name     | Optional. If not set, do not add prefix                                           |
+| version         | Print version of server and exit     | Optional                                                                          |
 
 Sample code to send metric in browser with JWT token in header:
 
+* HTTP:
+
 ```javascript
 $.ajax({
     url: 'http://127.0.0.1:8080/count/some.key.name',
@@ -105,6 +124,21 @@ $.ajax({
 });
 ```
 
+* HTTPS (if self-signed certificate is used it has to be accepted!):
+
+```javascript
+$.ajax({
+    url: 'https://127.0.0.1:433/count/some.key.name',
+    method: 'POST',
+    headers: {
+        'X-JWT-Token' => 'some-jwt-token'
+    },
+    data: {
+	value: 100500
+    }
+});
+```
+
 ## Authentication
 
 Authentication is optional. It based on passing JWT token to server, encrypted with secret, specified in `jwt-secret`
@@ -178,7 +212,7 @@ value=1
 
 | Parameter  | Description                          | Default value                      |
 |------------|--------------------------------------|------------------------------------|
-| value      | Integer value                                | Optional. Default 1                |
+| value      | Integer value                        | Optional. Default 1                |
 
 ## Response
 
@@ -188,7 +222,7 @@ Other HTTP status codes:
 
 | CODE             | Description                             |
 |------------------|-----------------------------------------|
-| 400 Bad Request  | Invalid parameters specified           |
+| 400 Bad Request  | Invalid parameters specified            |
 | 401 Unauthorized | Token not sent                          |
 | 403 Forbidden    | Token invalid/expired                   |
 | 404 Not found    | Invalid url requested                   |

demo/index.html

@@ -6,9 +6,22 @@
 </head>
 <body>
 
-You are running demo of StatsD HTTP Proxy. Please, start <b>statsdHttpProxy.sh</b> for handling HTTP requests and
-<b>statsdStub.sh</b> for monitoring proxied metrics.
+<p>You are running demo of StatsD HTTP(s) Proxy.</p>
 
+<p>Please start <b>statsdHttpProxy.sh</b> for handling HTTP requests or <b>statsdHttpsProxy.sh</b> for handling HTTPS requests.</p>
+<p>Please start <b>statsdStub.sh</b> for monitoring proxied metrics.</p>
+
+<p>Communication protocol:</p>
+<div>
+	<input type="radio" id="protocol" class="protocolRadio"
+		   name="protocol" value="http" checked>
+	<label for="protocol">HTTP (8080)</label>
+	<input type="radio" id="protocol" class="protocolRadio"
+		   name="protocol" value="https">
+	<label for="protocol">HTTPS (433)</label>
+</div>
+
+<p>Options:</p>
 <ul>
     <li><a href="#" data-metric-type="count">Send count</a></li>
     <li><a href="#" data-metric-type="timing">Send timing</a></li>
@@ -26,7 +39,7 @@
     (function() {
         // Token is valid to 2029-02-23T21:32:22.615Z, and builds with secret: somesecret
         var token = 'eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiIiLCJpYXQiOjE1MTk0MjE1NDIsImV4cCI6MTg2NjU3Njc0MiwiYXVkIjoiIiwic3ViIjoiIiwiR3JlZXRpbmciOiJIZWxsbywgZGVzY2VuZGFudHMifQ.n2qI2Ar9KzL3IsmlHjZAQmrf_Iz2ugnplwNIl4ELlDk';
-        var statsdHttpProxyHost = 'http://localhost:8080';
+		var statsdHttpProxyHost =  'localhost';
         var metricName = 'someMetricName';
         var metricType = "count";
         var tokenMode = "token-in-header";
@@ -42,7 +55,14 @@
         // send some metric
         setInterval(function() {
             var headers = {};
-            var url = statsdHttpProxyHost + '/' + metricType + '/' + metricName;
+			var protocol = $('.protocolRadio:checked').val();
+			var port = '8080' // http
+
+			if (protocol == 'https') {
+			  port = '433'
+			}
+
+            var url = protocol + '://' + statsdHttpProxyHost + ':' + port + '/' + metricType + '/' + metricName;
             var data = {};
 
             switch (metricType) {

demo/statsdHttpsProxy.sh

@@ -0,0 +1,22 @@
+#!/bin/sh
+
+# This server start listening connections by HTTPS and pass it to StatsD by UDP
+
+if [ ! -f "key.pem" -o ! -f "cert.pem" ]; then
+	echo "Https credentials do not exist. Generating new self-signed certificate and key with a default subject"
+
+	openssl req -x509 -nodes -days 358000 -newkey rsa:2048 -keyout key.pem -out cert.pem -subj "/C=PL/ST=test/L=test/O=test/OU=test/CN=test"
+fi
+
+CURRENT_DIR=$(dirname $(readlink -f $0))
+
+$CURRENT_DIR/../bin/statsd-http-proxy \
+    --verbose \
+    --http-host=127.0.0.1 \
+    --http-port=433 \
+    --tls-cert=cert.pem \
+    --tls-key=key.pem \
+    --statsd-host=127.0.0.1 \
+    --statsd-port=8125 \
+    --jwt-secret=somesecret \
+    --metric-prefix=prefix.subprefix

main.go

@@ -3,9 +3,9 @@ package main
 import (
 	"flag"
 	"fmt"
+	"github.com/GoMetric/go-statsd-client"
 	"github.com/dgrijalva/jwt-go"
 	"github.com/gorilla/mux"
-	"github.com/GoMetric/go-statsd-client"
 	"io/ioutil"
 	"log"
 	"net/http"
@@ -41,6 +41,8 @@ const jwtQueryStringKeyName = "token"
 // declare command line options
 var httpHost = flag.String("http-host", defaultHTTPHost, "HTTP Host")
 var httpPort = flag.Int("http-port", defaultHTTPPort, "HTTP Port")
+var tlsCert = flag.String("tls-cert", "", "TLS certificate to enable HTTPS")
+var tlsKey = flag.String("tls-key", "", "TLS private key  to enable HTTPS")
 var statsdHost = flag.String("statsd-host", defaultStatsDHost, "StatsD Host")
 var statsdPort = flag.Int("statsd-port", defaultStatsDPort, "StatsD Port")
 var metricPrefix = flag.String("metric-prefix", "", "Prefix of metric name")
@@ -102,7 +104,7 @@ func main() {
 		validateCORS(validateJWT(http.HandlerFunc(handleSetRequest))),
 	).Methods("POST")
 
-	router.PathPrefix("/").Methods("OPTIONS").HandlerFunc(handlePreFlightCORSRequest);
+	router.PathPrefix("/").Methods("OPTIONS").HandlerFunc(handlePreFlightCORSRequest)
 
 	// Create a new StatsD connection
 	statsdClient = statsd.NewClient(*statsdHost, *statsdPort)
@@ -122,8 +124,15 @@ func main() {
 		MaxHeaderBytes: 1 << 20,
 	}
 
-	// start http server
-	err := s.ListenAndServe()
+	var err error
+	if len(*tlsCert) > 0 && len(*tlsKey) > 0 {
+		// start https server
+		err = s.ListenAndServeTLS(*tlsCert, *tlsKey)
+	} else {
+		// start http server
+		err = s.ListenAndServe()
+	}
+
 	if err != nil {
 		log.Fatal(err)
 		os.Exit(1)