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2.1       frystyk     1: <HTML>
                      2: <HEAD>
                      3: <TITLE>Asyncronous Socket Management</TITLE>
2.8     ! frystyk     4: <!-- Changed by: Henrik Frystyk Nielsen, 25-Jan-1996 -->
2.1       frystyk     5: </HEAD>
                      6: <BODY>
                      7: 
                      8: <H1>Asyncronous Socket Management</H1>
                      9: 
                     10: <PRE>
                     11: /*
                     12: **     (c) COPYRIGHT MIT 1995.
                     13: **     Please first read the full copyright statement in the file COPYRIGH.
                     14: */
                     15: </PRE>
                     16: 
                     17: This module contains the routines for handling the set of active
                     18: sockets currently in use by the multithreaded clients. It is an
                     19: internal module to the Library, the application interface is
                     20: implemented in the <A HREF="HTEvntrg.html">Event Module</A>. Look for
                     21: more information in the <A
                     22: HREF="http://www.w3.org/pub/WWW/Library/User/Architecture/">
                     23: Multithread Specifications</A>. <P>
                     24: 
                     25: This module is implemented by <A HREF="HTNet.c">HTNet.c</A>, and it is
                     26: a part of the <A HREF="http://www.w3.org/pub/WWW/Library/">W3C
                     27: Reference Library</A>.
                     28: 
                     29: <PRE>
                     30: #ifndef HTNETMAN_H
                     31: #define HTNETMAN_H
                     32: #include "HTNet.h"
                     33: #include "HTDNS.h"
                     34: #include "HTEvntrg.h"
                     35: #include "HTSocket.h"
                     36: </PRE>
                     37: 
                     38: <H2>The HTNet Object</H2>
                     39: 
                     40: The <CODE>HTNet</CODE> object is the core of the request queue
                     41: management. This object contains information about the socket
                     42: descriptor, the input read buffer etc. required to identify and
                     43: service a request. <P>
                     44: 
                     45: <PRE>
2.2       frystyk    46: typedef enum _TCPState {
                     47:     TCP_ERROR          = -2,
                     48:     TCP_CONNECTED      = -1,
                     49:     TCP_BEGIN          = 0,
                     50:     TCP_DNS,
                     51:     TCP_NEED_SOCKET,
2.3       frystyk    52:     TCP_NEED_BIND,
                     53:     TCP_NEED_LISTEN,
                     54:     TCP_NEED_CONNECT
2.2       frystyk    55: } TCPState;
                     56: 
2.1       frystyk    57: struct _HTNet {
2.5       frystyk    58:     SOCKET             sockfd;                         /* Socket descripter */
2.1       frystyk    59:     SockA              sock_addr;              /* SockA is defined in tcp.h */
2.2       frystyk    60:     TCPState           tcpstate;                     /* State in connection */
2.1       frystyk    61:     HTInputSocket *    isoc;                                /* Input buffer */
                     62:     HTdns *            dns;                           /* Entry in DNS table */
                     63:     HTStream *         target;                             /* Target stream */
                     64:     int                        retry;               /* Counting attempts to connect */
                     65:     int                home;                    /* Current home if multiple */
                     66:     time_t             connecttime;             /* Used on multihomed hosts */
                     67:     long               bytes_read;               /* Bytes read from network */
2.7       frystyk    68:     long               bytes_written;           /* Bytes written to network */
                     69:     BOOL               preemptive;  /* Eff result from Request and Protocol */
2.1       frystyk    70:     HTPriority         priority;        /* Priority of this request (event) */
2.4       frystyk    71:     HTEventCallback *  cbf;                         /* Library load routine */
2.1       frystyk    72:     HTRequest *                request;           /* Link back to request structure */
                     73:     void *             context;                /* Protocol Specific context */
                     74: };
                     75: 
2.7       frystyk    76: #define HTNet_bytesRead(me)            ((me) ? (me)-&gt;bytes_read : -1)
                     77: #define HTNet_bytesWritten(me)         ((me) ? (me)-&gt;bytes_written : -1)
                     78: 
                     79: #define HTNet_setBytesRead(me,l)       ((me) ? (me-&gt;bytes_read=(l)) : -1)
                     80: #define HTNet_setBytesWritten(me,l)    ((me) ? (me-&gt;bytes_written=(l)) :-1)
                     81: 
                     82: #define HTNet_dns(me)                  ((me) ? (me)-&gt;dns : NULL)
2.1       frystyk    83: </PRE>
                     84: 
                     85: <PRE>
                     86: #endif /* HTNETMAN_H */
                     87: </PRE>
                     88: 
                     89: End of declaration module
                     90: </BODY>
                     91: </HTML>
                     92: 
                     93: 
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