java - Kotlin Socket server side | Kotlin: Unresolved reference: getOutputStream -


hello guys code is: 

import java.io.* import java.net.*  fun main(args : array<string>) {      var sock = serversocket(11344)     println("server asn runnig")     sock.accept()     var doc = dataoutputstream(sock.getoutputstream())     println("server close connectin")     doc.writeutf("hello")  }

when run error 

error:(18, 37) kotlin: unresolved reference: getoutputstream

if 1 how fix problem please me


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