Enable nohttp check during the build (netty#10708)

Motivation:

HTTP is a plaintext protocol which means that someone may be able
to eavesdrop the data. To prevent this, HTTPS should be used whenever
possible. However, maintaining using https:// in all URLs may be
difficult. The nohttp tool can help here. The tool scans all the files
in a repository and reports where http:// is used.

Modifications:

- Added nohttp (via checkstyle) into the build process.
- Suppressed findings for the websites
  that don't support HTTPS or that are not reachable

Result:

- Prevent using HTTP in the future.
- Encourage users to use HTTPS when they follow the links they found in
  the code.

LICENSE.txt

@@ -1,7 +1,7 @@
 
                                  Apache License
                            Version 2.0, January 2004
-                        http://www.apache.org/licenses/
+                        https://www.apache.org/licenses/
 
    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
 
@@ -193,7 +193,7 @@
    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
+       https://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,

NOTICE.txt

@@ -12,7 +12,7 @@ The Netty Project licenses this file to you 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
+  https://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
@@ -56,7 +56,7 @@ facade for Java, which can be obtained at:
   * LICENSE:
     * license/LICENSE.slf4j.txt (MIT License)
   * HOMEPAGE:
-    * http://www.slf4j.org/
+    * https://www.slf4j.org/
 
 This product contains a modified portion of 'Apache Harmony', an open source
 Java SE, which can be obtained at:
@@ -66,7 +66,7 @@ Java SE, which can be obtained at:
   * LICENSE:
     * license/LICENSE.harmony.txt (Apache License 2.0)
   * HOMEPAGE:
-    * http://archive.apache.org/dist/harmony/
+    * https://archive.apache.org/dist/harmony/
 
 This product contains a modified portion of 'jbzip2', a Java bzip2 compression
 and decompression library written by Matthew J. Francis. It can be obtained at:
@@ -148,7 +148,7 @@ equivalent functionality.  It can be obtained at:
   * LICENSE:
     * license/LICENSE.bouncycastle.txt (MIT License)
   * HOMEPAGE:
-    * http://www.bouncycastle.org/
+    * https://www.bouncycastle.org/
 
 This product optionally depends on 'Snappy', a compression library produced
 by Google Inc, which can be obtained at:
@@ -180,15 +180,15 @@ framework, which can be obtained at:
   * LICENSE:
     * license/LICENSE.commons-logging.txt (Apache License 2.0)
   * HOMEPAGE:
-    * http://commons.apache.org/logging/
+    * https://commons.apache.org/logging/
 
 This product optionally depends on 'Apache Log4J', a logging framework, which
 can be obtained at:
 
   * LICENSE:
     * license/LICENSE.log4j.txt (Apache License 2.0)
   * HOMEPAGE:
-    * http://logging.apache.org/log4j/
+    * https://logging.apache.org/log4j/
 
 This product optionally depends on 'Aalto XML', an ultra-high performance
 non-blocking XML processor, which can be obtained at:
@@ -245,4 +245,4 @@ This private header is also used by Apple's open source
  * LICENSE:
     * license/LICENSE.dnsinfo.txt (Apache License 2.0)
   * HOMEPAGE:
-    * http://www.opensource.apple.com/source/configd/configd-453.19/dnsinfo/dnsinfo.h
+    * https://www.opensource.apple.com/source/configd/configd-453.19/dnsinfo/dnsinfo.h

README.md

@@ -15,8 +15,8 @@ For the detailed information about building and developing Netty, please visit [
 
 You require the following to build Netty:
 
-* Latest stable [Oracle JDK 7](http://www.oracle.com/technetwork/java/)
-* Latest stable [Apache Maven](http://maven.apache.org/)
+* Latest stable [Oracle JDK 7](https://www.oracle.com/technetwork/java/)
+* Latest stable [Apache Maven](https://maven.apache.org/)
 * If you are on Linux, you need [additional development packages](https://netty.io/wiki/native-transports.html) installed on your system, because you'll build the native transport.
 
 Note that this is build-time requirement.  JDK 5 (for 3.x) or 6 (for 4.0+) is enough to run your Netty-based application.

all/pom.xml

@@ -6,15 +6,15 @@
   ~ 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
+  ~   https://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.
   -->
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+<project xmlns="https://maven.apache.org/POM/4.0.0" xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="https://maven.apache.org/POM/4.0.0 https://maven.apache.org/maven-v4_0_0.xsd">
 
   <modelVersion>4.0.0</modelVersion>
   <parent>
@@ -309,12 +309,12 @@
               <windowtitle>Netty API Reference (${project.version})</windowtitle>
               <detectJavaApiLink>false</detectJavaApiLink>
               <additionalparam>
-                -link http://docs.oracle.com/javase/7/docs/api/
+                -link https://docs.oracle.com/javase/7/docs/api/
                 -link https://developers.google.com/protocol-buffers/docs/reference/java/
-                -link http://docs.oracle.com/javaee/6/api/
-                -link http://www.slf4j.org/apidocs/
+                -link https://docs.oracle.com/javaee/6/api/
+                -link https://www.slf4j.org/apidocs/
                 -link https://commons.apache.org/proper/commons-logging/apidocs/
-                -link http://logging.apache.org/log4j/1.2/apidocs/
+                -link https://logging.apache.org/log4j/1.2/apidocs/
 
                 -group "Low-level data representation" io.netty.buffer*
                 -group "Central interface for all I/O operations" io.netty.channel*

bom/pom.xml

@@ -6,15 +6,15 @@
   ~ 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
+  ~   https://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.
   -->
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+<project xmlns="https://maven.apache.org/POM/4.0.0" xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="https://maven.apache.org/POM/4.0.0 https://maven.apache.org/maven-v4_0_0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <groupId>org.sonatype.oss</groupId>
@@ -40,7 +40,7 @@
   <licenses>
     <license>
       <name>Apache License, Version 2.0</name>
-      <url>http://www.apache.org/licenses/LICENSE-2.0</url>
+      <url>https://www.apache.org/licenses/LICENSE-2.0</url>
     </license>
   </licenses>
   <inceptionYear>2008</inceptionYear>

buffer/pom.xml

@@ -6,15 +6,15 @@
   ~ 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
+  ~   https://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.
   -->
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+<project xmlns="https://maven.apache.org/POM/4.0.0" xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="https://maven.apache.org/POM/4.0.0 https://maven.apache.org/maven-v4_0_0.xsd">
 
   <modelVersion>4.0.0</modelVersion>
   <parent>

buffer/src/main/java/io/netty/buffer/AbstractByteBuf.java

@@ -5,7 +5,7 @@
  * 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
+ *   https://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

buffer/src/main/java/io/netty/buffer/AbstractByteBufAllocator.java

@@ -5,7 +5,7 @@
  * 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
+ *   https://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

buffer/src/main/java/io/netty/buffer/AbstractDerivedByteBuf.java

@@ -5,7 +5,7 @@
  * 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
+ *   https://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

buffer/src/main/java/io/netty/buffer/AbstractPooledDerivedByteBuf.java

@@ -5,7 +5,7 @@
  * 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
+ *   https://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

buffer/src/main/java/io/netty/buffer/AbstractReferenceCountedByteBuf.java

@@ -5,7 +5,7 @@
  * 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
+ *   https://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

buffer/src/main/java/io/netty/buffer/AbstractUnpooledSlicedByteBuf.java

@@ -5,7 +5,7 @@
  * 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
+ *   https://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

buffer/src/main/java/io/netty/buffer/AbstractUnsafeSwappedByteBuf.java

@@ -5,7 +5,7 @@
  * 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
+ *   https://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

buffer/src/main/java/io/netty/buffer/AdvancedLeakAwareByteBuf.java

@@ -5,7 +5,7 @@
  * 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
+ *   https://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

buffer/src/main/java/io/netty/buffer/AdvancedLeakAwareCompositeByteBuf.java

@@ -5,7 +5,7 @@
  * 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
+ *   https://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

buffer/src/main/java/io/netty/buffer/ByteBuf.java

@@ -5,7 +5,7 @@
  * 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
+ *   https://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
@@ -43,7 +43,7 @@
  * <h3>Random Access Indexing</h3>
  *
  * Just like an ordinary primitive byte array, {@link ByteBuf} uses
- * <a href="http://en.wikipedia.org/wiki/Zero-based_numbering">zero-based indexing</a>.
+ * <a href="https://en.wikipedia.org/wiki/Zero-based_numbering">zero-based indexing</a>.
  * It means the index of the first byte is always {@code 0} and the index of the last byte is
  * always {@link #capacity() capacity - 1}.  For example, to iterate all bytes of a buffer, you
  * can do the following, regardless of its internal implementation:
@@ -274,7 +274,7 @@ public abstract class ByteBuf implements ReferenceCounted, Comparable<ByteBuf> {
     public abstract ByteBufAllocator alloc();
 
     /**
-     * Returns the <a href="http://en.wikipedia.org/wiki/Endianness">endianness</a>
+     * Returns the <a href="https://en.wikipedia.org/wiki/Endianness">endianness</a>
      * of this buffer.
      *
      * @deprecated use the Little Endian accessors, e.g. {@code getShortLE}, {@code getIntLE}

buffer/src/main/java/io/netty/buffer/ByteBufAllocator.java

@@ -5,7 +5,7 @@
  * 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
+ *   https://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

buffer/src/main/java/io/netty/buffer/ByteBufAllocatorMetric.java

@@ -5,7 +5,7 @@
  * 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
+ *   https://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

buffer/src/main/java/io/netty/buffer/ByteBufAllocatorMetricProvider.java

@@ -5,7 +5,7 @@
  * 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
+ *   https://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

buffer/src/main/java/io/netty/buffer/ByteBufHolder.java

@@ -5,7 +5,7 @@
  * 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
+ *   https://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

buffer/src/main/java/io/netty/buffer/ByteBufInputStream.java

@@ -5,7 +5,7 @@
  * 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
+ *   https://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

buffer/src/main/java/io/netty/buffer/ByteBufOutputStream.java

@@ -5,7 +5,7 @@
  * 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
+ *   https://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

buffer/src/main/java/io/netty/buffer/ByteBufProcessor.java

@@ -5,7 +5,7 @@
  * 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
+ *   https://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