Simplify API: remove HttpConnectionProvider

src/main/java/io/socket/engineio/client/Transport.java

@@ -9,6 +9,7 @@ import io.socket.utf8.UTF8Exception;
 
 import javax.net.ssl.HostnameVerifier;
 import javax.net.ssl.SSLContext;
+import java.net.Proxy;
 import java.util.Map;
 
 public abstract class Transport extends Emitter {
@@ -43,11 +44,9 @@ public abstract class Transport extends Emitter {
     protected SSLContext sslContext;
     protected Socket socket;
     protected HostnameVerifier hostnameVerifier;
-    protected String proxyHost;
-    protected int proxyPort;
+    protected Proxy proxy;
     protected String proxyLogin;
     protected String proxyPassword;
-    protected HttpConnectionProvider httpConnectionProvider;
 
     protected ReadyState readyState;
 
@@ -62,11 +61,9 @@ public abstract class Transport extends Emitter {
         this.sslContext = opts.sslContext;
         this.socket = opts.socket;
         this.hostnameVerifier = opts.hostnameVerifier;
-        this.proxyHost = opts.proxyHost;
-        this.proxyPort = opts.proxyPort;
+        this.proxy = opts.proxy;
         this.proxyLogin = opts.proxyLogin;
         this.proxyPassword = opts.proxyPassword;
-        this.httpConnectionProvider = opts.httpConnectionProvider;
     }
 
     protected Transport onError(String msg, Exception desc) {
@@ -162,10 +159,8 @@ public abstract class Transport extends Emitter {
         public SSLContext sslContext;
         public HostnameVerifier hostnameVerifier;
         protected Socket socket;
-        public String proxyHost;
-        public int proxyPort = -1;
+        public Proxy proxy;
         public String proxyLogin;
         public String proxyPassword;
-        public HttpConnectionProvider httpConnectionProvider;
     }
 }