[Error] Unit1.pas(68): Undeclared identifier: 'TWSAData'
[Error] Unit1.pas(69): Undeclared identifier: 'TSockAddrIn'
[Error] Unit1.pas(70): Undeclared identifier: 'TSocket'
[Error] Unit1.pas(80): Undeclared identifier: 'send'
[Error] Unit1.pas(80): Undeclared identifier: 'SOCKET_ERROR'
[Warning] Unit1.pas(80): Comparing signed and unsigned types - widened both operands
[Error] Unit1.pas(89): Undeclared identifier: 'recv'
[Error] Unit1.pas(90): Undeclared identifier: 'SOCKET_ERROR'
[Error] Unit1.pas(97): Undeclared identifier: 'WSAStartUp'
[Error] Unit1.pas(98): Undeclared identifier: 'socket'
[Error] Unit1.pas(98): Undeclared identifier: 'SOCK_STREAM'
[Error] Unit1.pas(98): Undeclared identifier: 'IPPROTO_IP'
[Error] Unit1.pas(99): Undeclared identifier: 'INVALID_SOCKET'
[Warning] Unit1.pas(99): Comparing signed and unsigned types - widened both operands
[Error] Unit1.pas(103): Undeclared identifier: 'inet_addr'
[Error] Unit1.pas(107): Missing operator or semicolon
[Error] Unit1.pas(108): Missing operator or semicolon
[Error] Unit1.pas(108): Undeclared identifier: 'htons'
[Error] Unit1.pas(109): Missing operator or semicolon
[Error] Unit1.pas(112): Undeclared identifier: 'connect'
[Warning] Unit1.pas(112): Comparing signed and unsigned types - widened both operands
[Error] Unit1.pas(150): Undeclared identifier: 'closesocket'
[Error] Unit1.pas(151): Undeclared identifier: 'WSACleanup'
[Fatal Error] Project1.dpr(8): Could not compile used unit 'Unit1.pas'

В чем проблема?