ESP8266 Client and Server by ESP8266WiFi.h

Hello to all.
I would like to set up a Client Server program by ESP8266.h in arduino, Does somebody has any example of How can I set up a Client and Server both in one ESP8266.
Very thank you.

Have you tried looking for examples, under the 'examples' menu?

Yes, But It doesn't have any example that uses Client and Server in one sketch.