Windows. TCP/IP Sockets

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1 I TCP/IP II Socket Windows Socket 2.1 Windows Sockets? Windows Sockets U.C. Berkeley BSD UNIX Socket Micosoft Windows Berkeley Socket Windows Windows Windows Sockets API Windows Windows Sockets ABI Windows Sockets API Windows Sockets Windows Sockets Windows Sockets Windows Sockets Windows Sockets Windows Sockets Windows Sockets Windows Sockets Windows Sockets Windows Sockets Windows Sockets API Internet IPS TCP/IP Windows Sockets. Windows Sockets API Windows Sockets 1-1 1

2 1 2 Windows Sockets TCP/IP Windows 1-1 Windows Sockets API 2.2 Bekeley Windows Sockets Bekeley TCP/IP UNIX Windows Sockets API 4.3BSD 2.3 Microsoft Windows Windows Windows Sockets API 3.0 Windows Windows Scokets Windwos Sockets Windows Sockets Windows Sockets Windows Windows 3.1 Windows Windows 3.0 Windows Sockets. Windows Sockets Windows Windows Windows WSAStartup() WSACleanup() Windows 2.4 Winsock socket socket socket socket socket_handle=socket(protocol_family,_socket_type,protocol) 2

3 socket Winsock API socket IP socket Socket IP Socket Winsock API Socket I/O Send Socket Socket Sendto Socket Recvfrom Socket SocketSend Socket Send Socket Socket Send Sendto WSAStartup() Windows Sockets DLL Windows Sockets DLL Windows Sockets DLL 2 WSACleanup() Windows Sockets DLL Windows Sockets DLL 3 socket() Socket Socket Socket 4 closesocket() Socket Socket 5 bind() SOCKET listen() 6 listen() Socket Socket ( 5, 1) 7 accept() Socket Socket Socket accept() SocketSocket Socket 8 connect() Socket Socket 9 recv() Socket Socket 10 send() Socket Socket 11 WSAAsyncSelect() Socket (event) Windows Sockets DLL levent wmsg. s 3

4 levent FD_READ FD_WRITE FD_OOB FD_ACCEPT FD_CONNECT FD_CLOSE WINSOCK API WINDOWS WinSock API WinSock WSAStartUp 2 Socket() 3 4 Socket 5 Socket WSAStartUp() WSACleanUp() 4

5 I Windows TCP/IP II FTP III MFC FTP CinternetSession CinternetSession Internet Session Internet CinternetSession CwinApp MFCCftpConnection Internet FTP MFC WinInet Internet CinternetSession CftpConnection FTP CftpConnection CinternetSession::GetFtpConnection CFtpConnection FTP 7 CInternetSession CInternetSession CInternetSession Internet GetFtpConnection() FTP CFtpConnection GetFtpConnection FTP CFtpConnection GetFile() FTP PutFile() FTP FTP CftpFileFind FindFile() FTP FTP FindNextFile FTP FindNextFile() MSDN FTP FTP 5

6 I II Windows WinSock III / / / Internet TELNET Internet FTP / 2-1 / 2-1 / Internet IRC IRC IRC 1 1) Socket WinSock Socket 6

7 Socket() Socket Socket INVALID_SOCKET( WSAGetLastError() WinSocket ) SOCKET PASCAL FAR socket( int af, int type, int protocol ) : af: PF_INET(AF_INET) type Socket (SOCK_STREAM SOCK_DGRAM) protocol ( 0) TCP/IP socket type SOCK_STREAM UDP socket SOCK_DGRAM 2) Socket Port bind() 0 SOCKET_ERROR int PASCAL FAR bind( SOCKET s, const struct sockaddr FAR *name,int namelen ); s Socket name Socket IP namelen name INADDR_ANY Port 0 Windows Sockets Port ( ) getsockname() 3 Socket, listen() Socket ( 5, 1) 0 SOCKET_ERROR int PASCAL FAR listen( SOCKET s, int backlog ); s Socket backlog Socket listen connect Server accept() Socket accept() WSAAsyncSelect 0 SOCKET_ERROR int PASCAL FAR WSAAsyncSelect( SOCKET s, HWND hwnd,unsigned int wmsg, long levent ); s Socket hwnd wmsg levent FD_READ FD_WRITE FD_OOB FD_ACCEPT FD_CONNECT FD_CLOSE FD_READ S FD_WRITE S FD_ACCEPT S FD_CONNECT S FD_CLOSE S FD_OOB S 7

8 wmsg lparam Socket switch(lparam) {case FD_READ: break; case FD_WRITE } break; 4 Client Server hwnd Winsock Stack lparam accept() Socket Socket Socket Socket INVALID_SOCKET SOCKET PASCAL FAR accept( SCOKET s, struct sockaddr FAR *addr,int FAR *addrlen ); s Socket addr addrlen addr 5 socket closesocket() Server socket 2 socket SOCKET 1 Socket WSAStartup() Winsock socket() TCP UDP socket sockets TCP TCP UDP UDP socket socket bind() IP port bind()winsock IP port 2 Socket connect() Socket 0 SOCKET_ERROR int PASCAL FAR connect( SOCKET s, const struct sockaddr FAR *name, int namelen ); s Socket name Socket namelen name TCP/IP / 8

9 TCP socket UDP socket Stream (TCP) Socket Datagram (UDP) Socket UDP UDP Socket TCP Socket TCP Socket send() recv() UDP Socket sendto() recvfrom() SOCKET_ERROR int PASCAL FAR send( SOCKET s, const char FAR *buf,int len, int flags ); s Socket buf len buf flags Datagram Socket datagram Stream Socket Blocking send()block Socket Non-Blocking output buffer block flags 0 MSG_DONTROUTE MSG_OOB int PASCAL FAR recv( SOCKET s, char FAR *buf, int len, int flags ); s Socket buf len buf flags Stream Socket input buffer len 9

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