Fix #767

src/main/scala/com/github/shadowsocks/BaseService.scala

@@ -166,6 +166,8 @@ trait BaseService extends Service {
 
     changeState(State.CONNECTING)
 
+    if (profile.isMethodUnsafe) Toast.makeText(this, R.string.method_unsafe, Toast.LENGTH_LONG).show
+
     Utils.ThrowableFuture(connect)
   }
 

src/main/scala/com/github/shadowsocks/database/Profile.scala

@@ -101,4 +101,6 @@ class Profile {
 
   override def toString = "ss://" + Base64.encodeToString("%s%s:%s@%s:%d".formatLocal(Locale.ENGLISH,
     method, if (auth) "-auth" else "", password, host, remotePort).getBytes, Base64.NO_PADDING | Base64.NO_WRAP)
+
+  def isMethodUnsafe = "table".equalsIgnoreCase(method) || "rc4".equalsIgnoreCase(method)
 }