Transcript ( WinSock ) Pertemuan 9 Windows Socket – Network Programming

Matakuliah : H0483 – Network Programming
Tahun
: 2008
Versi
: 2.0
Pertemuan 9
Windows Socket
( WinSock )
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Learning Outcomes
Pada akhir pertemuan ini, diharapkan mahasiswa
akan mampu :
• Mendemokan program aplikasi pada
sistem operasi windows dengan
menggunakan Windows Socket.
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Outline Materi
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What is Socket ?
What is Winsock ?
The Socket History
Winsock History
Supported Programming Models
Elements of Winsock Programming
General Program Flow
Iterative Server pada Windows
Concurrent Server pada Windows
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WinSock
• What is Socket?
– Socket is is a programming model originally
designed for network programming under
UNIX operating systems.
• What is Winsock?
– Winsock stands for Windows Socket;
– An Application Programming Interface for
network programming under the Microsoft
Windows operating systems.
– It is modeled after UNIX Socket but with
platform-specific features added.
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WinSock
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WinSock
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WinSock
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WinSock
• Supported Programming Models
– Synchronous Model
– Asynchronous Model
• Synchronous Model
– Makes use of blocking-mode I/O function
calls.
– What is Blocking I/O?
• Guaranteed either function completed successfully
or failed upon function return
• The calling code has to wait (i.e. block) for the
function to complete before continuing execution
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WinSock
• Asynchronous Model
– Makes use of non-blocking-mode I/O function
calls.
• What is Non-Blocking I/O?
– Guaranteed function will return immediately:
– The calling code has to check if the function
has completed before return.
– If not, the calling code will have to handle that
itself.(e.g. check at a later time, call the
function again, wait for asynchronous event to
trigger, etc.)
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Elements of Winsock
Programming
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Elements of Winsock
Programming
• BSD-Style Winsock Functions
– Core functions
• accept, bind, closesocket, connect, listen,
recv, recvfrom, select, send, sendto,
Shutdown, socket
– Auxiliary functions
• Getpeername, Getsockname, Getsockopt,
ioctlsocket
– Utility functions
• htonl, htons, inet_addr, inet_ntoa, ntohl,
ntohs
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Elements of Winsock
Programming
• Windows-Specific Winsock Functions
– Core functions
• WSAStartup, WSACleanup, WSAAsyncGettByn,
WSAAsyncSelect, WSACancelAsyncRequest,
WSAConnect,WSAIoctl, WSARecv, WSARecvFrom,
WSASend, WSASendTo, WSASocket
– Auxiliary functions
• WSADuplicateSocket, WSAEnumNetworkEvents,
WSAEnumProtocols, WSAGetLastError,
WSAGetQOSByName, WSAHtonl, WSAHtons,
WSAJoinLeaf, WSANtohl, WSANtohs,
WSAProviderConfigChange, WSASetLastError
– Supporting functions
• WSACloseEvent, WSACreateEvent, WSAEventSelect,
WSAGetOverlappedResult, WSAResetEvent, WSASetEvent,
WSAWaitForMultipleEvents
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General Program Flow
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General Program Flow
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General Program Flow
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Online References
• References
– The Winsock 1.1 and 2.0 Specifications
– Winsock Resource Centre at
http://www.winsock.com
– Windows socket programming resources at
http://www.sockets.com
– Visual C++ On-Line Help and Programming
Reference
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Iterative Server pada Windows
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Concurrent Server pada Windows
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Concurrent Servers
• I/O Models for Concurrent Servers
– Synchronous/Blocking Mode I/O
• Multi-threading (Win32 only)
• Similar to the UNIX fork( ) multiple-process model.
– Asynchronous/Non-Blocking Mode I/O
• Message-driven (All Windows versions)
• Overlapped I/O (Win32 only)
– Socket handle signalling
– Windows event object signalling
– I/O completion routines
– I/O Completion Ports (Windows NT only)
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Concurrent Server pada Windows
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Concurrent Server pada Windows
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Concurrent Server pada Windows
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Concurrent Server pada Windows
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Concurrent Server pada Windows
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Latihan
• Buat Program Echo Server dan program
client nya pada Windows dengan
menggunakan Winsock. Bahasa
Pemrograman yang digunakan bebas.
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