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source\lib\socket\socket.g
  1 /******************************************************************************
  2 *
  3 * Copyright (C) 2004-2008, The Gentee Group. All rights reserved. 
  4 * This file is part of the Gentee open source project - http://www.gentee.com. 
  5 * 
  6 * THIS FILE IS PROVIDED UNDER THE TERMS OF THE GENTEE LICENSE ("AGREEMENT"). 
  7 * ANY USE, REPRODUCTION OR DISTRIBUTION OF THIS FILE CONSTITUTES RECIPIENTS 
  8 * ACCEPTANCE OF THE AGREEMENT.
  9 *
 10 * Author: Alexey Krivonogov ( gentee )
 11 *
 12 ******************************************************************************/
 13 
 14 define
 15 {
 16    SD_RECEIVE     = 0x00
 17    SD_SEND        = 0x01
 18    SD_BOTH        = 0x02
 19    
 20    SOCKF_PROXY    = 0x0001  // Соединение через прокси
 21    SOCKF_FTP      = 0x0002  // FTP соединение 
 22 }
 23 
 24 /*-----------------------------------------------------------------------------
 25 * Id: tsocket T socket 
 26 * 
 27 * Summary: Socket structure.
 28 *
 29 -----------------------------------------------------------------------------*/
 30 
 31 type socket
 32 {
 33    str     host    // Host name.
 34    ushort  port    // Port number.
 35    uint    socket  // Open socket identifier.
 36    uint    flag    // Additional flags. #b($SOCKF_PROXY) - The socket is /
 37                    // opened via a proxy server. 
 38 }
 39 
 40 /*-----------------------------------------------------------------------------
 41 * Id: socket_isproxy F3
 42 *
 43 * Summary: Connecting via a proxy or not. This method can be used to determine
 44            if a socket is connected via a proxy server or not. 
 45 *
 46 * Return: 1 is returned if the socket is connected via a proxy server and 0 
 47           is returned otherwise. 
 48 *
 49 -----------------------------------------------------------------------------*/
 50 
 51 method uint socket.isproxy()
 52 {
 53    return this.flag & $SOCKF_PROXY
 54 }
 55 
 56 /*-----------------------------------------------------------------------------
 57 * Id: socket_close F3
 58 *
 59 * Summary: Closes a socket.
 60 *
 61 * Return: #lng/retf# 
 62 *
 63 -----------------------------------------------------------------------------*/
 64 
 65 method uint socket.close()
 66 {
 67    ineterror = shutdown( this.socket, $SD_BOTH )
 68    if !ineterror : ineterror = closesocket( this.socket )
 69    return !ineterror   
 70 }
 71 
 72 /*-----------------------------------------------------------------------------
 73 * Id: socket_connect F3
 74 *
 75 * Summary: Opens a socket. The method creates a socket and establishes a
 76            connection to the #b(host) and #b(port) specified in the host and
 77            port fields of the #a(tsocket) structure. 
 78 *
 79 * Return: #lng/retf# 
 80 *
 81 -----------------------------------------------------------------------------*/
 82 
 83 method uint socket.connect()
 84 {
 85    sockaddr_in saddr    
 86    uint        he ret
 87 
 88    // Получение хоста по имени
 89    saddr.sin_addr = inet_addr( this.host.ptr() )
 90    if saddr.sin_addr == 0xFFFFFFFF 
 91    {
 92       he = gethostbyname( this.host.ptr() )
 93       if !he : return inet_seterror()
 94       saddr.sin_addr = ( he->hostent.h_addr_list->uint)->uint
 95    }
 96    // Открытие сокета   
 97    this.socket = createsocket( $AF_INET, $SOCK_STREAM, $IPPROTO_TCP )
 98    if this.socket == $INVALID_SOCKET : return inet_seterror()
 99 
100    saddr.sin_family = $AF_INET
101    saddr.sin_port = htons( this.port )
102 
103    // Соединение   
104    ret = connect( this.socket, &saddr, sizeof( sockaddr ))
105    if ret == $SOCKET_ERROR
106    {
107       // Закрытие сокета в случае ошибки
108       this.close( )
109       return inet_seterror()   
110    }   
111    return 1
112 }
113 
114 /*-----------------------------------------------------------------------------
115 * Id: socket_recv F2
116 *
117 * Summary: The method gets a packet from the connected server.
118 *
119 * Params: data - The buffer for writing data. The received packet will be /
120                  added to the data already existing in the buffer.     
121 *  
122 * Return: #lng/retf# 
123 *
124 -----------------------------------------------------------------------------*/
125    
126 method uint socket.recv( buf data )
127 {
128    uint ret
129    
130    if data.use + 0x7FFF > data.size
131    {
132       data.expand( data.size + 0x7FFF )
133    }
134    ret = recv( this.socket, data.ptr() + data.use, 0x7FFF, 0  )
135    if ret == $SOCKET_ERROR
136    {
137       return inet_seterror()
138    }
139    data.use += ret
140    return 1
141 }
142    
143 /*-----------------------------------------------------------------------------
144 * Id: socket_send F2
145 *
146 * Summary: The method sends a request to the connected server.
147 *
148 * Params: data - Request string.     
149 *  
150 * Return: #lng/retf# 
151 *
152 -----------------------------------------------------------------------------*/
153    
154 method uint socket.send( str data )
155 {
156    if send( this.socket, data.ptr(), *data, 0  ) == $SOCKET_ERROR
157    {
158       return inet_seterror()
159    }
160    return 1
161 }   
162 
163 /*-----------------------------------------------------------------------------
164 ** Id: socket_send_1 FA
165 *
166 * Summary: The method sends a request data to the connected server.
167 *
168 * Params: data - Request buffer.     
169 *  
170 * Return: #lng/retf# 
171 *
172 -----------------------------------------------------------------------------*/
173 
174 method uint socket.send( buf data )
175 {
176    uint off last = *data
177    uint sent
178    
179    while last
180    {   
181       sent = send( this.socket, data.ptr() + off, last, 0  )
182       if sent == $SOCKET_ERROR
183       {
184          return inet_seterror()
185       }
186       last -= sent
187       off += sent
188    }
189    return 1
190 }   
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