fix #6 enable to set SSLContext

src/main/java/com/github/nkzawa/socketio/client/IO.java

@@ -3,6 +3,7 @@ package com.github.nkzawa.socketio.client;
 
 import com.github.nkzawa.socketio.parser.Parser;
 
+import javax.net.ssl.SSLContext;
 import java.net.MalformedURLException;
 import java.net.URI;
 import java.net.URISyntaxException;
@@ -22,6 +23,9 @@ public class IO {
      */
     public static int protocol = Parser.protocol;
 
+    public static void setDefaultSSLContext(SSLContext sslContext) {
+        Manager.defaultSSLContext = sslContext;
+    }
 
     private IO() {}
 

src/main/java/com/github/nkzawa/socketio/client/Manager.java

@@ -5,6 +5,7 @@ import com.github.nkzawa.socketio.parser.Packet;
 import com.github.nkzawa.socketio.parser.Parser;
 import com.github.nkzawa.thread.EventThread;
 
+import javax.net.ssl.SSLContext;
 import java.net.URI;
 import java.util.ArrayList;
 import java.util.LinkedList;
@@ -62,6 +63,8 @@ public class Manager extends Emitter {
 
     public static final String EVENT_RECONNECT_ATTEMPT = "reconnect_attempt";
 
+    /*package*/ static SSLContext defaultSSLContext;
+
     /*package*/ ReadyState readyState = null;
 
     private boolean _reconnection;
@@ -111,6 +114,9 @@ public class Manager extends Emitter {
         if (opts.path == null) {
             opts.path = "/socket.io";
         }
+        if (opts.sslContext == null) {
+            opts.sslContext = defaultSSLContext;
+        }
         this.opts = opts;
         this.nsps = new ConcurrentHashMap<String, Socket>();
         this.subs = new LinkedList<On.Handle>();