Annotation of libwww/Library/src/HTHstMan.html, revision 2.16
2.1 frystyk 1: <HTML>
2: <HEAD>
3: <!-- Changed by: Henrik Frystyk Nielsen, 19-May-1996 -->
2.9 frystyk 4: <TITLE>W3C Sample Code Library libwww Private Hst Definition</TITLE>
2.1 frystyk 5: </HEAD>
6: <BODY>
7: <H1>
8: Private Host Definition
9: </H1>
10: <PRE>
11: /*
12: ** (c) COPYRIGHT MIT 1995.
13: ** Please first read the full copyright statement in the file COPYRIGH.
14: */
15: </PRE>
16: <P>
17: This is the private definition of the Host Class. Please look in the public
18: <A HREF="HTHost.html">Host Class</A> for more documentation
19: <P>
20: This module is implemented by <A HREF="HTHost.c">HTHost.c</A>, and it is a
2.15 frystyk 21: part of the <A HREF="http://www.w3.org/Library/">W3C Sample Code
2.1 frystyk 22: Library</A>.
23: <PRE>
24: #ifndef HTHSTMAN_H
25: #define HTHSTMAN_H
26: #include "HTHost.h"
27: #include "HTDNS.h"
28: #include "HTEvent.h"
29: #include "HTProt.h"
30:
31: #define PIPE_BUFFER_SIZE 8192
32: </PRE>
33: <P>
34: The <CODE>HTHost</CODE> object is the core of the request queue management.
35: This object contains information about the socket descriptor, the input read
36: buffer etc. required to identify and service a request.
37: <PRE>
38: typedef enum _TCPState {
39: TCP_ERROR = -2,
40: TCP_CONNECTED = -1,
41: TCP_BEGIN = 0,
42: TCP_CHANNEL,
43: TCP_DNS,
44: TCP_NEED_SOCKET,
45: TCP_NEED_BIND,
46: TCP_NEED_LISTEN,
2.4 eric 47: TCP_NEED_CONNECT,
48: TCP_IN_USE
2.1 frystyk 49: } TCPState;
50:
51: struct _HTHost {
52: int hash;
53:
54: /* Information about the otherend */
55: char * hostname; /* name of host + optional port */
2.2 eric 56: u_short u_port;
2.1 frystyk 57: time_t ntime; /* Creation time */
58: char * type; /* Peer type */
59: int version; /* Peer version */
60: HTMethod methods; /* Public methods (bit-flag) */
61: char * server; /* Server name */
62: char * user_agent; /* User Agent */
63: char * range_units; /* ??? */
64:
65: /* When does this entry expire? */
66: time_t expires; /* Persistent channel expires time */
2.4 eric 67: int reqsPerConnection; /* from Keep-Alive: header */
68: int reqsMade; /* updated as they are sent */
2.1 frystyk 69:
70: /* Queuing and connection modes */
71: HTList * pipeline; /* Pipe line of net objects */
72: HTList * pending; /* List of pending Net objects */
2.11 frystyk 73: HTNet * doit; /* Transfer from pending to pipe */
2.13 frystyk 74: HTNet * lock; /* This is a kludge! */
2.1 frystyk 75: BOOL persistent;
76: HTTransportMode mode; /* Supported mode */
2.12 frystyk 77: HTTimer * timer; /* Timer for handling idle connection */
78: BOOL do_recover; /* If we are supposed to recover */
2.5 frystyk 79: int recovered; /* How many times had we recovered */
2.10 frystyk 80: BOOL close_notification; /* Got a hint about close */
2.16 ! frystyk 81: BOOL broken_pipe;
2.1 frystyk 82:
83: /* Support for transports */
84: HTChannel * channel; /* data channel */
85:
86: /* Connection dependent stuff */
87: HTdns * dns; /* Link to DNS object */
88: TCPState tcpstate; /* State in connection */
2.14 frystyk 89: SockA sock_addr; /* SockA is defined in wwwsys.h */
2.1 frystyk 90: int retry; /* Counting attempts to connect */
91: int home; /* Current home if multiple */
2.7 frystyk 92: ms_t connecttime; /* Time in ms on multihomed hosts */
2.1 frystyk 93:
94: /* Event Management */
2.3 eric 95: HTEvent * events[HTEvent_TYPES];/* reading and writing may differ */
2.1 frystyk 96: HTEventType registeredFor; /* Which actions are we blocked on */
97: size_t remainingRead; /* Tells HostEvent to call next net */
98:
99: /* User specific stuff */
2.6 frystyk 100: ms_t delay; /* Write delay in ms */
2.1 frystyk 101: void * context; /* Protocol Specific context */
102: int forceWriteFlush;
103: };
104:
105: #define HTHost_bytesRead(me) ((me) ? (me)->bytes_read : -1)
106: #define HTHost_bytesWritten(me) ((me) ? (me)->bytes_written : -1)
107:
108: #define HTHost_setBytesRead(me,l) ((me) ? (me->bytes_read=(l)) : -1)
109: #define HTHost_setBytesWritten(me,l) ((me) ? (me->bytes_written=(l)) :-1)
110: #define HTHost_setDNS (host, dns) ((me) ? (me->dns=(dns)) :-1)
111: </PRE>
112:
113: <PRE>
114: #endif /* HTHSTMAN_H */
115: </PRE>
116: <P>
117: <HR>
118: <ADDRESS>
2.16 ! frystyk 119: @(#) $Id: HTHstMan.html,v 2.15 1998/05/14 02:10:34 frystyk Exp $
2.1 frystyk 120: </ADDRESS>
121: </BODY></HTML>
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