Initial import

.gitignore

@@ -0,0 +1,5 @@
+/target/
+*.iml
+.idea/
+/application.properties
+

.mvn/wrapper/MavenWrapperDownloader.java

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+/*
+ * Copyright 2007-present the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import java.net.*;
+import java.io.*;
+import java.nio.channels.*;
+import java.util.Properties;
+
+public class MavenWrapperDownloader {
+
+    private static final String WRAPPER_VERSION = "0.5.6";
+    /**
+     * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided.
+     */
+    private static final String DEFAULT_DOWNLOAD_URL = "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/"
+        + WRAPPER_VERSION + "/maven-wrapper-" + WRAPPER_VERSION + ".jar";
+
+    /**
+     * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
+     * use instead of the default one.
+     */
+    private static final String MAVEN_WRAPPER_PROPERTIES_PATH =
+            ".mvn/wrapper/maven-wrapper.properties";
+
+    /**
+     * Path where the maven-wrapper.jar will be saved to.
+     */
+    private static final String MAVEN_WRAPPER_JAR_PATH =
+            ".mvn/wrapper/maven-wrapper.jar";
+
+    /**
+     * Name of the property which should be used to override the default download url for the wrapper.
+     */
+    private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl";
+
+    public static void main(String args[]) {
+        System.out.println("- Downloader started");
+        File baseDirectory = new File(args[0]);
+        System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath());
+
+        // If the maven-wrapper.properties exists, read it and check if it contains a custom
+        // wrapperUrl parameter.
+        File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH);
+        String url = DEFAULT_DOWNLOAD_URL;
+        if(mavenWrapperPropertyFile.exists()) {
+            FileInputStream mavenWrapperPropertyFileInputStream = null;
+            try {
+                mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile);
+                Properties mavenWrapperProperties = new Properties();
+                mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream);
+                url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url);
+            } catch (IOException e) {
+                System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'");
+            } finally {
+                try {
+                    if(mavenWrapperPropertyFileInputStream != null) {
+                        mavenWrapperPropertyFileInputStream.close();
+                    }
+                } catch (IOException e) {
+                    // Ignore ...
+                }
+            }
+        }
+        System.out.println("- Downloading from: " + url);
+
+        File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH);
+        if(!outputFile.getParentFile().exists()) {
+            if(!outputFile.getParentFile().mkdirs()) {
+                System.out.println(
+                        "- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() + "'");
+            }
+        }
+        System.out.println("- Downloading to: " + outputFile.getAbsolutePath());
+        try {
+            downloadFileFromURL(url, outputFile);
+            System.out.println("Done");
+            System.exit(0);
+        } catch (Throwable e) {
+            System.out.println("- Error downloading");
+            e.printStackTrace();
+            System.exit(1);
+        }
+    }
+
+    private static void downloadFileFromURL(String urlString, File destination) throws Exception {
+        if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) {
+            String username = System.getenv("MVNW_USERNAME");
+            char[] password = System.getenv("MVNW_PASSWORD").toCharArray();
+            Authenticator.setDefault(new Authenticator() {
+                @Override
+                protected PasswordAuthentication getPasswordAuthentication() {
+                    return new PasswordAuthentication(username, password);
+                }
+            });
+        }
+        URL website = new URL(urlString);
+        ReadableByteChannel rbc;
+        rbc = Channels.newChannel(website.openStream());
+        FileOutputStream fos = new FileOutputStream(destination);
+        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
+        fos.close();
+        rbc.close();
+    }
+
+}

.mvn/wrapper/maven-wrapper.properties

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+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.6.3/apache-maven-3.6.3-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar

CHANGELOG.md

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+# Changelog
+
+## [Unreleased]
+### Added
+- Implement authentication gateway

LICENSE.md

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+Apache License
+==============
+
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README.md

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+# Streaming Gateway for nginx-rtmp
+## Usage
+### Configure gateway
+1. Build the project ```./mvnw clean package``` or download a release from releases tab
+2. Copy the jar to the destination server
+3. Create an ```application.properties``` file. An example file is in the repository
+4. Add at least one user to the properties file
+5. Launch the software with ```java -jar downloaded_name.jar```
+
+### Configure nginx-rtmp
+The example configuration file takes the input data in the ingest application 
+and then publishes it to the live application. The ```ffmpeg``` executions enable different stream qualities.
+On ```/live/name```, the original stream quality is available, the other options transcode to lower resolutions or
+reduced frame rates in order to reduce data throughput. The ```on_publish``` URL needs to match the port and IP address
+specified in ```application.properties```
+
+```nginx
+rtmp {
+        server {
+                listen [::]:1935 ipv6only=off;
+                chunk_size 8192;
+
+                application ingest {
+                        live on;
+                        meta copy;
+                        exec ffmpeg -i rtmp://localhost/ingest/$name -c:v copy -c:a copy -f flv rtmp://localhost/live/$name;
+                        exec ffmpeg -i rtmp://localhost/ingest/$name -c:v libx264 -c:a copy -s 1920x1080 -filter:v fps=fps=30 -f flv rtmp://localhost/live/1080p_$name;
+                        exec ffmpeg -i rtmp://localhost/ingest/$name -c:v libx264 -c:a copy -s 1280x720 -filter:v fps=fps=30 -f flv rtmp://localhost/live/720p_$name;
+                        on_publish http://127.0.0.1:31337/auth;
+                        allow play 127.0.0.1;
+                        allow play ::1;
+                        deny play all;
+                }
+
+                application live {
+                        live on;
+                        meta copy;
+                        allow publish 127.0.0.1;
+                        allow publish ::1;
+                        deny publish all;
+                        wait_key on;
+                        wait_video on;
+                }
+        }
+}
+```
+Remember to restart nginx after making configuration changes.
+
+### Configure your streaming software
+In your streaming software, set the server to ```rtmp://yourserver/ingest/```, and the passkey to
+```username?key=passkey```, where ```username``` and ```passkey``` are the ones you defined in
+```application.properties```. Now, you should be able to start streaming. If your streaming software
+produces an error, make sure you correctly set the stream key (```name``` is *not* part of the server,
+it is part of your stream key). The gateway logs all authentication attempts, so you can verify whether
+your attempts actually made it to the server.
+
+### Watch your streams
+With the example config above, the URLs to watch the streams are
+1. ```rtmp://servername/live/name``` for the original data
+2. ```rtmp://servername/live/1080p_name``` remastered to 1080p30
+3. ```rtmp://servername/live/720p_name``` remastered to 720p30

application.properties.example

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+# Add new users to this file
+streaminggate.users.alice=passKeyAlice
+streaminggate.users.bob=passKeyBob
+
+server.port=31337
+server.address=127.0.0.1