Games : How to create or join in a server in Minecraft PE? [duplicate]

This question already has an answer here:

• How do you join or create a server in multiplayer? 2 answers

I love playing with Minecraft.I want to play with my friends and people around the world with a server in Minecraft PE.But I don't see an option in Minecraft to do so.Do I need to get a third party app or Is there an alternative plugin?