Add SSL support

http/src/main/java/net/md_5/bungee/http/HttpClient.java

@@ -66,6 +66,6 @@ public class HttpClient
             }
         };
 
-        new Bootstrap().channel( NioSocketChannel.class ).group( eventLoop ).handler( new HttpInitializer( url, port, ssl ) ).remoteAddress( uri.getHost(), port ).connect().addListener( future );
+        new Bootstrap().channel( NioSocketChannel.class ).group( eventLoop ).handler( new HttpInitializer( ssl ) ).remoteAddress( uri.getHost(), port ).connect().addListener( future );
     }
 }

http/src/main/java/net/md_5/bungee/http/HttpInitializer.java

@@ -6,14 +6,13 @@ import io.netty.handler.codec.http.HttpClientCodec;
 import io.netty.handler.ssl.SslHandler;
 import javax.net.ssl.SSLContext;
 import javax.net.ssl.SSLEngine;
+import javax.net.ssl.TrustManager;
 import lombok.RequiredArgsConstructor;
 
 @RequiredArgsConstructor
 public class HttpInitializer extends ChannelInitializer<Channel>
 {
 
-    private final String host;
-    private final int port;
     private final boolean ssl;
 
     @Override
@@ -21,8 +20,15 @@ public class HttpInitializer extends ChannelInitializer<Channel>
     {
         if ( ssl )
         {
-            SSLContext context = SSLContext.getDefault();
+            SSLContext context = SSLContext.getInstance( "TLS" );
-            SSLEngine engine = context.createSSLEngine( host, port );
+            context.init( null, new TrustManager[]
+            {
+                TrustingX509Manager.getInstance()
+            }, null );
+
+            SSLEngine engine = context.createSSLEngine();
+            engine.setUseClientMode( true );
+
             ch.pipeline().addLast( "ssl", new SslHandler( engine ) );
         }
         ch.pipeline().addLast( "http", new HttpClientCodec() );

http/src/main/java/net/md_5/bungee/http/TrustingX509Manager.java

@@ -0,0 +1,32 @@
+package net.md_5.bungee.http;
+
+import java.security.cert.CertificateException;
+import java.security.cert.X509Certificate;
+import javax.net.ssl.X509TrustManager;
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+public class TrustingX509Manager implements X509TrustManager
+{
+
+    @Getter
+    private static final X509TrustManager instance = new TrustingX509Manager();
+
+    @Override
+    public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException
+    {
+    }
+
+    @Override
+    public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException
+    {
+    }
+
+    @Override
+    public X509Certificate[] getAcceptedIssuers()
+    {
+        return new X509Certificate[ 0 ];
+    }
+}